Composites / Plastics: Most Popular Articles
These articles are the most popular over the last month.
A Brief History of Kevlar
Introduction to Kevlar fibers and their properties.
Introduction to Kevlar fibers and their properties.
Composite Materials Properties Database
Database of composite material properties.: composite materials properties material properties database carbon graphite database material content database
Database of composite material properties.: composite materials properties material properties database carbon graphite database material content database
Diffusion Coefficient
A factor of proportionality representing the amount of substance diffusing across a unit area through a unit concentration gradient in unit time.
A factor of proportionality representing the amount of substance diffusing across a unit area through a unit concentration gradient in unit time.
Vacuum Bagging: Basics - Composite Materials
Basic techniques for vacuum bagging laminates, from your About.com Guide
Basic techniques for vacuum bagging laminates, from your About.com Guide
Dictionary of Composite Materials Technology
Introduction to the Composite Materials Glossary.
Introduction to the Composite Materials Glossary.
Wind Turbine Blades - Composite Materials
Sandia Developing New Wind Turbine Blade Manufacturing Processes, from your About.com Guide
Sandia Developing New Wind Turbine Blade Manufacturing Processes, from your About.com Guide
Index of Carbon/Graphite Composite Material Properties
Index of material properties for carbon and graphite composite materials.
Index of material properties for carbon and graphite composite materials.
What's a Composite?
A brief description and definition of composite materials.
A brief description and definition of composite materials.
Polyethylene Terephthalate
A saturated, thermoplastic, polyester resin made by condensing ethylene glycol and terephthalic acid, which has assumed a role of primacy in fibers and molding materials.
A saturated, thermoplastic, polyester resin made by condensing ethylene glycol and terephthalic acid, which has assumed a role of primacy in fibers and molding materials.
Fracture Strength
The normal stress at the beginning of fracture.: fracture strength cross sectional area tension test specimen stress
The normal stress at the beginning of fracture.: fracture strength cross sectional area tension test specimen stress
Aprotic Solvent
An organic solvent that does not exchange protons with a substance dissolved in it.
An organic solvent that does not exchange protons with a substance dissolved in it.
Linear Expansion
The increase of a planar dimension, measured by the linear elongation of a sample in the form of a beam which is exposed to two given temperatures.
The increase of a planar dimension, measured by the linear elongation of a sample in the form of a beam which is exposed to two given temperatures.
Cellulose Fibers, Natural
Natural fibers of cellulose have been used as a reinforcement material, e.
Natural fibers of cellulose have been used as a reinforcement material, e.
Modulus of Elasticity
The ratio of stress (nominal) to corresponding strain below the proportional limit of a material.
The ratio of stress (nominal) to corresponding strain below the proportional limit of a material.
Abrasion Resistance
The ability of a material to withstand mechanical action such as rubbing, scraping, or erosion, that tends progressively to remove material from its surface.
The ability of a material to withstand mechanical action such as rubbing, scraping, or erosion, that tends progressively to remove material from its surface.
Woven Fabric
A planar structure produced by interlacing two or more sets of yarns, fibers, rovings, or filaments where the elements pass each other essentially at right angles and one set of elements is parallel to the fabric axis.
A planar structure produced by interlacing two or more sets of yarns, fibers, rovings, or filaments where the elements pass each other essentially at right angles and one set of elements is parallel to the fabric axis.
Material Properties Generic E-Glass Epoxy
Material properties of generic E-glass epoxy unidirectional prepreg.
Material properties of generic E-glass epoxy unidirectional prepreg.
Addition Polymerization
A chemical reaction in which simple molecules (monomers) are added to each other to form long-chain molecules (polymers) without by-products.
A chemical reaction in which simple molecules (monomers) are added to each other to form long-chain molecules (polymers) without by-products.
Force Vector
A particular type of vector representing a force operating in a defined direction and magnitude.
A particular type of vector representing a force operating in a defined direction and magnitude.
St. Venant's Principle
The difference between the stresses caused by statically equivalent load systems is insignificant at distances greater than the largest dimension of the area over which the loads are acting.
The difference between the stresses caused by statically equivalent load systems is insignificant at distances greater than the largest dimension of the area over which the loads are acting.
Adsorption Chromatography
The analytical separation of a chemical mixture (gas or liquid) by passing it over an adsorbent bed that adsorbs different compounds at different rates.
The analytical separation of a chemical mixture (gas or liquid) by passing it over an adsorbent bed that adsorbs different compounds at different rates.
Linear Polymer
A polymer in which the molecules form long chains without branches or cross-linked structures.
A polymer in which the molecules form long chains without branches or cross-linked structures.
Secant Modulus
The slope of the line connecting the origin and a given point on the stress-strain curve, or the ratio of nominal stress to corresponding strain at any specified point on the stress-strain curve expressed in force per unit area.
The slope of the line connecting the origin and a given point on the stress-strain curve, or the ratio of nominal stress to corresponding strain at any specified point on the stress-strain curve expressed in force per unit area.
Index of Fiberglass Composite Materials Properties
Index of material properties for fiberglass composite materials.
Index of material properties for fiberglass composite materials.
Axial Load
A pure tension or compression load acting along the long axis of a straight structural member.
A pure tension or compression load acting along the long axis of a straight structural member.
Water Absorption
(1) The amount of water absorbed by a composite material when immersed in water for a stipulated period of time.
(1) The amount of water absorbed by a composite material when immersed in water for a stipulated period of time.
Viscometer
An instrument used for measuring the viscosity and flow properties of fluids.
An instrument used for measuring the viscosity and flow properties of fluids.
Compression Molding
A method of molding in which the molding material, generally preheated, is first placed in an open, heated mold cavity.
A method of molding in which the molding material, generally preheated, is first placed in an open, heated mold cavity.
Fiber Volume Fraction of a Composite Materials
The volume of fiber in a cured composite.: glass fiber composites hydrogen peroxide chemical digestion volume fraction fiber volume
The volume of fiber in a cured composite.: glass fiber composites hydrogen peroxide chemical digestion volume fraction fiber volume
Condensation Polymerization
A process in which water or some other simple substance separates from two or more of the polymer molecules upon their combination.
A process in which water or some other simple substance separates from two or more of the polymer molecules upon their combination.
Thermogravimetric Analysis
A testing procedure in which changes in weight of a specimen are recorded as the specimen is heated in air or in a controlled atmosphere such as nitrogen.
A testing procedure in which changes in weight of a specimen are recorded as the specimen is heated in air or in a controlled atmosphere such as nitrogen.
Brookfield Viscometer
The Brookfield Synchro-Lectric Viscometer is an instrument used for measuring the viscosity of plastisols and other liquids of a thixotropic nature.
The Brookfield Synchro-Lectric Viscometer is an instrument used for measuring the viscosity of plastisols and other liquids of a thixotropic nature.
Fabric Terminology for Composite Materials
Definition of terms used to describe engineering fabrics.
Definition of terms used to describe engineering fabrics.
Drop Test
Technique for measuring the durability of a part or material by subjecting it to a free fall, from a predetermined height into a surface, under prescribed conditions.
Technique for measuring the durability of a part or material by subjecting it to a free fall, from a predetermined height into a surface, under prescribed conditions.
Deburr
The removal of undesirable sharp edges, burrs and fins remaining on a manufacture part after completion of finish machining processes.
The removal of undesirable sharp edges, burrs and fins remaining on a manufacture part after completion of finish machining processes.
Basal Plane
The plane which is perpendicular to the principal axis (c axis) in a tetragonal or hexagonal structure.
The plane which is perpendicular to the principal axis (c axis) in a tetragonal or hexagonal structure.
Coefficient of Linear Expansion
The change in length per unit length resulting from a one degree rise in temperature, expressed in degrees.
The change in length per unit length resulting from a one degree rise in temperature, expressed in degrees.
Glass Fiber Reinforcements
A family of reinforcing materials for reinforced plastics based on single filaments of glass ranging in diameter from 3 to 19 micrometers.
A family of reinforcing materials for reinforced plastics based on single filaments of glass ranging in diameter from 3 to 19 micrometers.
Top 20 Engineering Achievements of the 20th Century
Neil Armstrong announced the 20 top engineering achievements of the 20th Century at a National Academvy of Engineering NAE meeting
Neil Armstrong announced the 20 top engineering achievements of the 20th Century at a National Academvy of Engineering NAE meeting
Poisson's Ratio
When a material is stretched, its cross-sectional area changes as well as it length.
When a material is stretched, its cross-sectional area changes as well as it length.
Load Deflection Curve
A curve in which the increasing flexural loads are plotted on the ordinate and the deflections caused by those loads are plotted on the abscissa.
A curve in which the increasing flexural loads are plotted on the ordinate and the deflections caused by those loads are plotted on the abscissa.
Extruder
A machine for producing more or less continuous lengths of plastic sections.
A machine for producing more or less continuous lengths of plastic sections.
Oxygen Index Flammability Test
A flammability test based on the technique of clamping a certain volumetric concentration of specimen in a tube, and introducing a mixture of oxygen and nitrogen, the relative concentrations of which can be gradually varied at measured rates.
A flammability test based on the technique of clamping a certain volumetric concentration of specimen in a tube, and introducing a mixture of oxygen and nitrogen, the relative concentrations of which can be gradually varied at measured rates.
Composite Materials Glossary - A
Index for the Dictionary of Composite Materials Technology - A
Index for the Dictionary of Composite Materials Technology - A
Materials Database - Composite Materials
Search the MatWeb Database for material properties, from your About.com Guide
Search the MatWeb Database for material properties, from your About.com Guide
Endurance Limit
The stress level below which a specimen will withstand cyclic stress indefinitely without exhibiting fatigue failure.
The stress level below which a specimen will withstand cyclic stress indefinitely without exhibiting fatigue failure.
Dimerization
A polymerization reaction of two similar molecules.
A polymerization reaction of two similar molecules.
Greige Goods
Textiles that have not received any bleaching, dyeing or finishing treatment after being produced by a textile process (pronounced gray).
Textiles that have not received any bleaching, dyeing or finishing treatment after being produced by a textile process (pronounced gray).
MIL-HDBK-23 A Cover Page
Cover page for MIL-HDBK-23A, the Military Handbook on Structural Sandwich Composites.
Cover page for MIL-HDBK-23A, the Military Handbook on Structural Sandwich Composites.
Polyhexamethylene-Adipamide
See NYLON.: nylon nbsp
See NYLON.: nylon nbsp
K-Value
(1) A number calculated from dilute solution viscosity measurements of a polymer, used to denote degree of polymerization or molecular size.
(1) A number calculated from dilute solution viscosity measurements of a polymer, used to denote degree of polymerization or molecular size.
Lap Winding
A variation of the filament winding process, consisting of convolutely winding a resin-impregnated tape onto a mandrel of the desired configuration.
A variation of the filament winding process, consisting of convolutely winding a resin-impregnated tape onto a mandrel of the desired configuration.
Coextrusion
The process of extruding two or more materials through a single die with two or more orifices arranged so that the extrudates merge and weld together into a laminar structure before chilling.
The process of extruding two or more materials through a single die with two or more orifices arranged so that the extrudates merge and weld together into a laminar structure before chilling.
Flexural Modulus
The ratio, within the elastic limit, of the applied stress on a test specimen in flexure, to the corresponding strain in the outermost fibers of the specimen.
The ratio, within the elastic limit, of the applied stress on a test specimen in flexure, to the corresponding strain in the outermost fibers of the specimen.
Coupling Agent
A chemical substance capable of reacting with both the reinforcement and the resin matrix of a composite material.
A chemical substance capable of reacting with both the reinforcement and the resin matrix of a composite material.
Bulk Polymerization
The polymerization of a monomer in the absence of any medium other than a catalyst or accelerator.
The polymerization of a monomer in the absence of any medium other than a catalyst or accelerator.
Thermal Capacity
The quantity of heat necessary to produce a unit change of temperature in a unit mass of a substance.
The quantity of heat necessary to produce a unit change of temperature in a unit mass of a substance.
Impact Resistance
The relative susceptibility of plastics to fracture under stresses applied at high speeds.
The relative susceptibility of plastics to fracture under stresses applied at high speeds.
Viscosity, Intrinsic
A measure of the capability of a polymer in solution to enhance the viscosity of the solution.
A measure of the capability of a polymer in solution to enhance the viscosity of the solution.
Stand-Alone System
A system that is completely operational without requiring external support.
A system that is completely operational without requiring external support.
Resin Transfer Molding
A closed-mold pressure injection system which allows for faster gel and cure times as compared to contact molded parts.
A closed-mold pressure injection system which allows for faster gel and cure times as compared to contact molded parts.
Fick's Second Law of Diffusion
The time rate of concentration change is related to the second derivative of the concentration gradient through the diffusion coefficient.
The time rate of concentration change is related to the second derivative of the concentration gradient through the diffusion coefficient.
Moment Arm
The perpendicular distance from an axis to the line of action of a force.
The perpendicular distance from an axis to the line of action of a force.
Gel Permeation Chromatography
A column chromatography technique employing as the stationary phase a swollen gel made by polymerizing and cross-linking styrene in the presence of a diluent which is a nonsolvent for the styrene polymer.
A column chromatography technique employing as the stationary phase a swollen gel made by polymerizing and cross-linking styrene in the presence of a diluent which is a nonsolvent for the styrene polymer.
Composite Wing Section - Composite Materials - Date: 11/24/97
Design of a typical composite wing, from your About.com Guide
Design of a typical composite wing, from your About.com Guide
Fiberglass Insulation - Composite Materials Date: 06/29/98
How fiberglass insulation works, from your About.com Guide
How fiberglass insulation works, from your About.com Guide
Anti-Foaming Agent
An additive which reduces the surface tension of a solution or emulsion, thus inhibiting or modifying the formation of a foam.
An additive which reduces the surface tension of a solution or emulsion, thus inhibiting or modifying the formation of a foam.
Recycled Cellulose/Glass Composite Replaces Marine Plywood
All-A-Board composite, made from recycled plastic cellulose and glass fiber, is gaining acceptance in the marine industry as a plywood replacement.
All-A-Board composite, made from recycled plastic cellulose and glass fiber, is gaining acceptance in the marine industry as a plywood replacement.
Golf Club Market Report
A recent market report predicts a growth rate of over 25% annually in the Chinese and Indian golf club market. As the demand for high performance products has increased, carbon fiber composites have overtaken steel as the material of choice for golf shafts.
A recent market report predicts a growth rate of over 25% annually in the Chinese and Indian golf club market. As the demand for high performance products has increased, carbon fiber composites have overtaken steel as the material of choice for golf shafts.
Amorphous Silica
A naturally occurring or synthetically produced oxide of silicon characterized by the absence of pronounced crystalline structure, and which has no sharp peaks in its X-ray diffraction pattern.
A naturally occurring or synthetically produced oxide of silicon characterized by the absence of pronounced crystalline structure, and which has no sharp peaks in its X-ray diffraction pattern.
Nucleating Agents
Chemical substances which when incorporated in plastics form nuclei for the growth of crystals in the polymer melt.
Chemical substances which when incorporated in plastics form nuclei for the growth of crystals in the polymer melt.
Diallyl Phthalate
In the monomeric form, a colorless liquid ester widely used as a cross-linking monomer for unsaturated polyester resins, and as a polymerizable plasticizer for many resins.
In the monomeric form, a colorless liquid ester widely used as a cross-linking monomer for unsaturated polyester resins, and as a polymerizable plasticizer for many resins.
Flexural Strength
The strength of a material in bending, expressed as the stress on the outermost fibers of a bent test specimen, at the instant of failure.
The strength of a material in bending, expressed as the stress on the outermost fibers of a bent test specimen, at the instant of failure.
Glare: History of the Development of a New Aircraft Material
: delft university of technology fiber metal laminate glass composites a380 jumbo jet technology delft
: delft university of technology fiber metal laminate glass composites a380 jumbo jet technology delft
Faying Surface
The surface of a material in contact with another to which it is or will be joined.
The surface of a material in contact with another to which it is or will be joined.
Stress-Strain Diagram
The curve which results from plotting the applied stress on a test specimen in tension versus the corresponding strain.
The curve which results from plotting the applied stress on a test specimen in tension versus the corresponding strain.
Velocity Gradient
With respect to material being sheared, velocity gradient is the change dv in relative velocity v between parallel planes with respect to the change dr in perpendicular distance r throughout the depth of the material.
With respect to material being sheared, velocity gradient is the change dv in relative velocity v between parallel planes with respect to the change dr in perpendicular distance r throughout the depth of the material.
Dielectric Loss
A loss of energy which eventually produces a rise in temperature of a dielectric placed in an alternating electrical field.
A loss of energy which eventually produces a rise in temperature of a dielectric placed in an alternating electrical field.
Hoop Stress
The circumferential stress in a material of cylindrical form subjected to internal or external pressure.
The circumferential stress in a material of cylindrical form subjected to internal or external pressure.
Fick's First Law of Diffusion
A relationship wherein the flux of a diffusing species is proportional to the concentration gradient.
A relationship wherein the flux of a diffusing species is proportional to the concentration gradient.
Isotactic Polymer
Pertaining to a type of polymeric molecular structure containing a sequence of regularly spaced, asymmetric atoms arranged in like configuration in a polymer chain.
Pertaining to a type of polymeric molecular structure containing a sequence of regularly spaced, asymmetric atoms arranged in like configuration in a polymer chain.
Ceiling Temperature
For polymerization reactions which have negative enthalpy (H) and entropy (S) changes associated with them, the temperature above which a monomer cannot be converted to long chain polymer.
For polymerization reactions which have negative enthalpy (H) and entropy (S) changes associated with them, the temperature above which a monomer cannot be converted to long chain polymer.
Compressive Load
The compressive force carried by the test specimen at any given moment.
The compressive force carried by the test specimen at any given moment.
Essential Composite Materials Reference Books
The three books every composites engineer needs.: library reference books asm intl new composites asm international undergraduate textbook
The three books every composites engineer needs.: library reference books asm intl new composites asm international undergraduate textbook
Gas-Liquid Chromatography
A variation of the gas chromatography process in which the chromatographic column is packed with a finely divided solid impregnated with a nonvolatile organic liquid.
A variation of the gas chromatography process in which the chromatographic column is packed with a finely divided solid impregnated with a nonvolatile organic liquid.
Modulus of Resilience
The energy that can be absorbed per unit volume without creating a permanent distortion.
The energy that can be absorbed per unit volume without creating a permanent distortion.
Bonded Fabric
A web of fibers held together by an adhesive medium which does not form a continuous film.
A web of fibers held together by an adhesive medium which does not form a continuous film.
Biaxial Stress
Stress in which a principal stress is zero, while the other two are usually in tension.
Stress in which a principal stress is zero, while the other two are usually in tension.
Viscous Flow
A type of fluid movement in which all particles of the fluid, flow in a straight line parallel to the axis of a containing pipe or channel with little or no mixing or turbidity.
A type of fluid movement in which all particles of the fluid, flow in a straight line parallel to the axis of a containing pipe or channel with little or no mixing or turbidity.
Poiseuille's Equation
An equation for calculating the pressure drop of a fluid, in laminar flow, through a cylindrical tube.
An equation for calculating the pressure drop of a fluid, in laminar flow, through a cylindrical tube.
Coefficient of Thermal Conductivity
The rate at which heat is transferred by conduction through a unit cross-sectional area of material when a temperature gradient exists perpendicular to the area.
The rate at which heat is transferred by conduction through a unit cross-sectional area of material when a temperature gradient exists perpendicular to the area.
Material Properties T300/5208 Carbon Epoxy
Material properties of T300/5208 carbon epoxy unidirectional prepreg.
Material properties of T300/5208 carbon epoxy unidirectional prepreg.
Degree of Polymerization
The length in monomeric or base units of the average linear polymer chain at time t in a polymerization reaction.
The length in monomeric or base units of the average linear polymer chain at time t in a polymerization reaction.
Curing Agents
Substances or mixtures of substances added to a polymer composition to promote or control the curing reaction.
Substances or mixtures of substances added to a polymer composition to promote or control the curing reaction.
Water Vapor Permeability
The rate of water vapor transmission per unit area per unit of vapor pressure differential under test conditions.
The rate of water vapor transmission per unit area per unit of vapor pressure differential under test conditions.
TTT Diagram
A time-temperature-transformation reaction diagram developed to understand and compare the cure and glass transition properties of resins.
A time-temperature-transformation reaction diagram developed to understand and compare the cure and glass transition properties of resins.
Silane Coupling Agents
Silanes and other monomeric silicon compounds have the ability to bond inorganic materials such as glass, mineral fillers, metals and metallic oxides to organic resins.
Silanes and other monomeric silicon compounds have the ability to bond inorganic materials such as glass, mineral fillers, metals and metallic oxides to organic resins.
Material Properties T300/934 Carbon Epoxy
Material properties of T300/934 carbon epoxy unidirectional prepreg.
Material properties of T300/934 carbon epoxy unidirectional prepreg.
Basic Design Principals of Structural Sandwich Composites
Section 1.2 of MIL-HDBK-23A, basic design principles of structural sandwich composites..
Section 1.2 of MIL-HDBK-23A, basic design principles of structural sandwich composites..
Free-Radical Polymerization
A type of polymerization, in which the propagating species is a long chain free radical, usually initiated by the attack of free radicals derived by thermal or photo-chemical decomposition of unstable materials called initiators.
A type of polymerization, in which the propagating species is a long chain free radical, usually initiated by the attack of free radicals derived by thermal or photo-chemical decomposition of unstable materials called initiators.
Suspension Polymerization
A polymerization process in which the monomer, or mixture of monomers, is dispersed by mechanical agitation in a liquid phase, usually water, in which the monomer droplets are polymerized while they are dispersed by continuous agitation.
A polymerization process in which the monomer, or mixture of monomers, is dispersed by mechanical agitation in a liquid phase, usually water, in which the monomer droplets are polymerized while they are dispersed by continuous agitation.
Monotectic
An isothermal reversible reaction in a binary system, in which a liquid, on cooling, decomposes into a second liquid of a different composition and a solid.
An isothermal reversible reaction in a binary system, in which a liquid, on cooling, decomposes into a second liquid of a different composition and a solid.
Textile Materials
General term for fibers, yarn intermediates, yarns, fabrics, and products made from fabrics.
General term for fibers, yarn intermediates, yarns, fabrics, and products made from fabrics.
Elongation at Break
Elongation recorded at the moment of rupture of the specimen, often expressed as a percentage of the original length.
Elongation recorded at the moment of rupture of the specimen, often expressed as a percentage of the original length.
Yield Point
The first point at which permanent deformation of a stressed specimen begins to take place.
The first point at which permanent deformation of a stressed specimen begins to take place.
Percentage Elongation
The elongation of the test specimen expressed as a percentage of the gage length.
The elongation of the test specimen expressed as a percentage of the gage length.
Infrared Spectrophotometry
A technique to identify materials including organic polymers.
A technique to identify materials including organic polymers.
Pin Joint
A flexible joint between two or more members of a structure which transmits no movement.
A flexible joint between two or more members of a structure which transmits no movement.
Bulk Specific Gravity
The specific gravity of a porous solid ,when the volume of the solid as used in the calculation includes both the permeable and impermeable voids.
The specific gravity of a porous solid ,when the volume of the solid as used in the calculation includes both the permeable and impermeable voids.
Acetylation
The substitution of an acetyl radical for an active hydrogen.
The substitution of an acetyl radical for an active hydrogen.
Notes for the Composite Materials Properties Database
Notes for the composite materials properties database.
Notes for the composite materials properties database.
Compression Set
The amount of deformation (expressed as a percentage of original dimensions) which a material retains after compressive stress is released.
The amount of deformation (expressed as a percentage of original dimensions) which a material retains after compressive stress is released.
Crocus Cloth
An iron-oxide coated abrasive cloth, used as a polishing agent after most of the work has been done with emery or aluminum oxide.
An iron-oxide coated abrasive cloth, used as a polishing agent after most of the work has been done with emery or aluminum oxide.
Sieving
Separation of a mixture of various-sized particles, either dry or suspended in a liquid, into two or more portions, by passing through screens of specified mesh sizes.
Separation of a mixture of various-sized particles, either dry or suspended in a liquid, into two or more portions, by passing through screens of specified mesh sizes.
Torsional Moment
The algebraic sum of the couples or the moments of the external forces about the axis of twist or both in a body being twisted.
The algebraic sum of the couples or the moments of the external forces about the axis of twist or both in a body being twisted.
Molecular Weight Distribution
The relative amounts of polymers of different molecular weights that comprise a given specimen of a polymer.
The relative amounts of polymers of different molecular weights that comprise a given specimen of a polymer.
Ambient Temperature
The temperature of the medium surrounding an object.
The temperature of the medium surrounding an object.
Statistics and the Strength of Composite Materials
Effect of statistical distributions on composite material strength.
Effect of statistical distributions on composite material strength.
Smart Composite Masts - Composite Materials
Smart Composite Masts for Yachts, from your About.com Guide
Smart Composite Masts for Yachts, from your About.com Guide
Pot Life
The length of time that a catalyzed resin system retains a viscosity low enough to be used in processing.
The length of time that a catalyzed resin system retains a viscosity low enough to be used in processing.
Honeycomb Manufacturing and Elastic Properties
Because of the way it is manufactured, honeycomb has one direction which is stronger and stiffer.
Because of the way it is manufactured, honeycomb has one direction which is stronger and stiffer.
Differential Thermal Analysis
An analytical method in which the specimen polymer and an inert reference material are heated concurrently at a linear rate, each having its own temperature sensing and recording apparatus.
An analytical method in which the specimen polymer and an inert reference material are heated concurrently at a linear rate, each having its own temperature sensing and recording apparatus.
Graft Polymer
A polymer comprising molecules in which the main backbone chain of atoms has attached to it at various points side chains containing different atoms or groups from those in the main chain.
A polymer comprising molecules in which the main backbone chain of atoms has attached to it at various points side chains containing different atoms or groups from those in the main chain.
Dielectric Constant
(e) (1) That property of a dielectric which determines the electrostatic energy stored per unit volume for unit potential.
(e) (1) That property of a dielectric which determines the electrostatic energy stored per unit volume for unit potential.
Composite Materials Glossary - Abbreviations and Acronyms
Abbreviations and acronyms from the composite materials glossary
Abbreviations and acronyms from the composite materials glossary
Yield Value
The stress, either normal or shear, at which a marked increase in deformation occurs without an increase in load.
The stress, either normal or shear, at which a marked increase in deformation occurs without an increase in load.
Review of Filament Winding Composite Structure Fabrication
Review of Filament Winding Composite Structure Fabrication, by Peters, Humphrey and Foral.
Review of Filament Winding Composite Structure Fabrication, by Peters, Humphrey and Foral.
Shear Rate
The overall velocity over the cross section of a channel with which molten or fluid layers are gliding along each other, or along the wall, in laminar flow.
The overall velocity over the cross section of a channel with which molten or fluid layers are gliding along each other, or along the wall, in laminar flow.
Hardener
A substance or mixture added to a plastic composition to take part in and promote or control the curing action, Also a substance added to control the degree of hardness of the cured film.
A substance or mixture added to a plastic composition to take part in and promote or control the curing action, Also a substance added to control the degree of hardness of the cured film.
Peritectic
An isothermal reversible reaction in which a liquid phase reacts with a solid phase to produce a single and different solid phase on cooling.
An isothermal reversible reaction in which a liquid phase reacts with a solid phase to produce a single and different solid phase on cooling.
Pulse-Echo Method
An ultrasonic (NDT) method for the detection and characterization of defects in composites in which pulses are transmitted and received on the same side of the test panel after being reflected from the opposite face.
An ultrasonic (NDT) method for the detection and characterization of defects in composites in which pulses are transmitted and received on the same side of the test panel after being reflected from the opposite face.
Carbon Black
A generic term for the family of colloidal carbons.
A generic term for the family of colloidal carbons.
Strength of Carbon Nanotubes - Composite Materials
Tensile Tests Measure Strength of Carbon Nanotubes, from your About.com Guide
Tensile Tests Measure Strength of Carbon Nanotubes, from your About.com Guide
Dissipation Factor-Electrical
The ratio of the power loss in a dielectric material to the total power transmitted through the dielectric, the imperfection of the dielectric.
The ratio of the power loss in a dielectric material to the total power transmitted through the dielectric, the imperfection of the dielectric.
Complex Viscosity of a Fluid
A frequency-dependent viscosity function determined during forced harmonic oscillation of shear stress.
A frequency-dependent viscosity function determined during forced harmonic oscillation of shear stress.
Dimensional Stability
Ability of a substance or part to retain its shape when subjected to varying degrees of temperature, moisture, pressure, or other stress.
Ability of a substance or part to retain its shape when subjected to varying degrees of temperature, moisture, pressure, or other stress.
Hydroxyl Value
A measure of hydroxyl (univalent OH) groups in an organic material.
A measure of hydroxyl (univalent OH) groups in an organic material.
Capillary Viscometer
Used for two types of capillary instruments: one for concentrated solutions or polymer melts described under capillary rheometer, and the other for measuring dilute solution viscosities.
Used for two types of capillary instruments: one for concentrated solutions or polymer melts described under capillary rheometer, and the other for measuring dilute solution viscosities.
Conjugated Double Bonds
A chemical term denoting double bonds separated from each other by a single bond.
A chemical term denoting double bonds separated from each other by a single bond.
Chain Scission
The breaking of a molecular bond causing the loss of a side group or shortening of the overall chain.
The breaking of a molecular bond causing the loss of a side group or shortening of the overall chain.
Laminate Stacking Sequence
The stacking sequence defines the thickness, orientation, and order of each ply in a laminate.
The stacking sequence defines the thickness, orientation, and order of each ply in a laminate.
Non-Hygroscopic
Lacking the property of absorbing and retaining an appreciable quantity of moisture from the air.
Lacking the property of absorbing and retaining an appreciable quantity of moisture from the air.
Heat-Treated Wood Provides Alternative to Hardwood
Heat treating soft lumber provides rot resistance and dimensional stability, allowing it to be used in place of traditional hardwoods.
Heat treating soft lumber provides rot resistance and dimensional stability, allowing it to be used in place of traditional hardwoods.
Syndiotactic Polymer
A polymer whose monomer units are oriented alternately dextro and levo or a polymer structure in which monomer units attached to the polymer backbone alternate in a-b-a-b fashion on one side of the backbone and, if present on the other side, are arranged in a b-a-b-a fashion.
A polymer whose monomer units are oriented alternately dextro and levo or a polymer structure in which monomer units attached to the polymer backbone alternate in a-b-a-b fashion on one side of the backbone and, if present on the other side, are arranged in a b-a-b-a fashion.
Factors of Safety - Composite Materials Date: 12/22/97
Information about the role of composites in the F-117A crash, from your About.com Guide
Information about the role of composites in the F-117A crash, from your About.com Guide
Twill Weave
A weave that consists of one or more warp yarns running over and under two or more fill yarns.
A weave that consists of one or more warp yarns running over and under two or more fill yarns.
Man-Made Fiber
A class name for various fibers (including filaments) synthetically produced from fiber-forming substances which usually refer to all chemically produced fibers to distinguish them from truly natural fibers such as cotton, wool, silk, flax, etc.
A class name for various fibers (including filaments) synthetically produced from fiber-forming substances which usually refer to all chemically produced fibers to distinguish them from truly natural fibers such as cotton, wool, silk, flax, etc.
Trade Name Index ( F - H) - Composite Materials
Composite materials listed by trade name, from your About.com Guide
Composite materials listed by trade name, from your About.com Guide
Thermal Fatigue
The premature fracture resulting from cyclic stresses due to temperature changes.
The premature fracture resulting from cyclic stresses due to temperature changes.
Volatile Solvent
A nonaqueous liquid with solvent properties with the distinctive characteristic of evaporating readily at room temperature and atmospheric pressure.
A nonaqueous liquid with solvent properties with the distinctive characteristic of evaporating readily at room temperature and atmospheric pressure.