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Composites/Plastics: Most Popular Articles

These articles are the most popular over the last month.
What Is Polypropylene Used For?
What is polypropylene? The versatile plastic polypropylene is used throughout our daily life, and has become a common piece for packaging and plastic products.
What Is a Composite?
When two materials are combined to make a stronger material, a composite is made. Learn what makes composite materials unique, strong, and lightweight.
What Are Epoxy Resins?
Epoxy resins are advanced thermosetting resins used in FRP composites. Learn the basics of this resin, the chemistry, and the uses of epoxy.
What Exactly Is a Polymer?
What is a polymer. Discover the basics of polymers and what makes them so useful See examples of polymers and their common uses.
The Difference Between Thermoplastic and...
Thermoset vs thermoplastic composites, what is the difference? Both have advantages and there is demand for both thermoplastic and thermoset composites.
Guide To Carbon Fiber
Carbon fiber is a lightweight fiber used in advanced composites. Learn about what makes this material so unique and important.
All You Wanted to Know about Fiberglass
Fiberglass is a strong and lightweight reinforcement used in composites. Learn about the history of fiberglass and how it is manufactured.
What Are Composite Surfboards Made Of?
The composite surfboard combines advanced materials to make the ultimate board. Learn about the key materials of a composite surfboard, and the future of board design.
Applications of Carbon Fiber
Carbon fiber has properties that make it desirable in many applications. Learn about what products have adopted this lightweight and durable material.
Learn All about the Recycling of Plastics
Plastic recycling can reduce the consumption of other natural resources like timber, due to its use in making composite lumber and many other products.
What Is PVC Plastics
PVC plastics are the third most commonly used types of plastic polymers used. Learn about the properties of PVC polyvinyl chloride plastics.
PP Plastics
Polypropylene is a versatile plastic used in many places in our life. Learn about this plastic and the myriad of uses.
How Is Carbon Fiber Made?
Carbon fiber, perhaps the most useful material of out time, is manufactured through precise processes. Lear how carbon fiber is made.
Vinyl Ester vs Polyester Resins
Both resins have distinct advantages over the other. Find out the differences between vinyl ester and polyester resins.
Uses Of Carbon Fiber
Carbon fiber is used because of it's high strength and light weight properties. Learn which industries have adopted this unique material.
Example of Composites
There are numerous examples of composites, many of which can be seen around the house. Learn about what every day products are manufactured with FRP composites.
Notch Sensitivity
The extent to which the sensitivity of a material to fracture is increased by the presence of a surface inhomogeneity such as a notch, a sudden change in section, a crack, or a scratch.
8 Raw Carbon Fiber Manufacturers
Learn about the various companies around the world that manufacture raw carbon fiber used in lightweight composite products.
Most Common Plastics
We touch plastic polymers all day long, but chances are you are touching one of these five most common plastics.
What Are Prepregs?
Prepregs are pre-impregnated fiber reinforcements or cloths that are used to manufacture composites. Learn the basics of prepregs here.
What Makes PET Plastics Advantageous over Other...
What are PET plastics? Learn about the plastic used in water and soda bottles, and how PET plastic is recycled.
How To Carbon Fiber
Discover how to carbon fiber, the guide for learning the various aspects of carbon fiber composites and how to work with the lightweight composite material know as carbon fiber.
What's a Composite?
A brief description and definition of composite materials.
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 History of Composites
What is the history of composite materials? Find out when the first composite was used, and how composites have changed through the years.
Abbreviation for parts per hundred parts of resin.
Top 20 Engineering Achievements of the 20th...
Neil Armstrong announced the 20 top engineering achievements of the 20th Century at a National Academvy of Engineering NAE meeting
Know the Basics of Polyester and Vinyl Ester
Polyester and vinyl ester resins are the two most common resins used in FRP composites. Learn why these resins work so well.
How You Can Paint Different Composite Materials
How to paint composites and fiberglass. Learn the steps in prepping and finishing a composite material with paint.
A Brief History of Kevlar
Introduction to Kevlar fibers and their properties.
What Is Carbon Fiber Cloth
Learn about carbon fiber cloth. Discover the terms used in carbon fiber manufacturing such as, 3k plain weave carbon, and 282 carbon fiber.
Understanding CFRP Composites
Carbon fiber reinforced polymers (CFRP composites) are lightweight yet strong materials. Learn what make these space age materials so useful and desirable.
Vacuum Bagging: Basics - Composite Materials
Basic techniques for vacuum bagging laminates, from your About.com Guide
Benefits of Composites
Learn about the features and benefits of composite material.
Linear Polymer
A polymer in which the molecules form long chains without branches or cross-linked structures.
Fabric Terminology for Composite Materials
Definition of terms used to describe engineering fabrics.
Fiber Volume Fraction of a Composite Materials
The volume of fiber in a cured composite.
Material Properties T300/5208 Carbon Epoxy
Material properties of T300/5208 carbon 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.
Splitting Tensile Strength
A method of determining the tensile strength of concrete using a cylinder which splits across the vertical diameter.
Coupling Agent
A chemical substance capable of reacting with both the reinforcement and the resin matrix of a composite material.
Composite Truck Beds - Composite Materials
Growth Expected in Composite Pickup Truck Beds, from your About.com Guide
Centroidal Axis
The line joining the centroid of each cross section along the length of an axial member such as truss diagonal.
Complex Viscosity of a Fluid
A frequency-dependent viscosity function determined during forced harmonic oscillation of shear stress.
Structural Adhesives
structural adhesives, glue, bond, composites, aerospace
Water Absorption
(1) The amount of water absorbed by a composite material when immersed in water for a stipulated period of time.
Draw Ratio
(1) A measure of the degree of stretching during the orientation of a fiber or filament, expressed as the ratio of the cross-sectional area of the undrawn material to that of the drawn material.
Composites In War
Composite materials are a leading advantage in the theater of war. Learn which why fiberglass and other FRP materials are dominating the battle field.
Caul Plates
Smooth metal plates, free of surface defects and of the same size and shape as a composite lay-up, used in contact with the lay-up during the curing process to transmit normal pressure and provide a smooth surface on the finished laminate.
Environmental Health and Safety Issues With...
An overview of the environmental, health and safety (ES&H) issues associated with composites and plastics.
Balanced Laminate
A composite laminate in which all laminae at angles other than 0 degrees and 90 degrees occur only in plus or minus pairs (not necessarily adjacent), and are symmetrical about a centerline.
Basic Design Principals of Structural Sandwich...
Section 1.2 of MIL-HDBK-23A, basic design principles of structural sandwich composites..
Theta Temperature
With respect to molecular interactions in dilute polymer solutions, theta temperature is the temperature at which the second virial coefficient disappears.
Material Properties AS4/3501-6 Carbon Epoxy
Material properties of AS4/3501-6 carbon epoxy unidirectional prepreg.
Areal Weight
Weight (mass) per unit area of a single ply of dry reinforcement fabric.
Aftermarket Carbon Fiber
The carbon fiber weave is great looking, and provides value and appeal. But, not all carbon fiber is the real thing.
Honeycomb Manufacturing and Elastic Properties
Because of the way it is manufactured, honeycomb has one direction which is stronger and stiffer.
Halpin-Tsai Equations
These equations are useful for the prediction of the ply properties of composite materials.
Polyvinyl Chloride (PVC)
Polyvinyl Chloride (PVC) is one of the commonly used plastics. It's wide acceptance in delivering clean drinking water, and removing dirty drinking water has made PVC plastic a useful polymer.
Effective Depth of Reinforced Concrete
As applied to a beam or slab, it is the distance of the centroid of the reinforcement from the compression face of the concrete.
Elastic Range
The range of stress for a structural material from zero up to and including the proportional limit.
An objectionable coating gradually formed on the metal surfaces of molds during processing of plastics due to extraction and deposition of some ingredient such as a lubricant, stabilizer, or plasticizer.
Diatomaceous Silica
A form of hydrous silica, processed from natural diatomate, a sedimentary rock of varying degrees of consolidation that is composed essentially of the fossilized siliceous skeletal remains of single-cell aquatic plant organisms called diatoms.
Index of Carbon/Graphite Composite Material...
Index of material properties for carbon and graphite composite materials.
Plastics In Food Packaging
Plastics are excellent at holding and preserving food, however, unwanted chemicals might be leaching into the food the plastic is supposed to protect.
Emerging Applications of Ceramic and Metal...
Many of the 500 papers presented during the 27th Annual Cocoa Beach Conference & Exposition on Advanced Ceramics & Composites focused on composites, both ceramic and metal matrix, and discussed mechanical behavior, design, fibers/interfaces, processing, and applications. Potential applications under development include components for armor, nuclear energy, and automobiles.
Entropy Bio-Based Resins
Entropy Resins is a manufacturer of bio-based epoxy resins that are truly environmentally friendly. Learn more about their products and company with a question and answer session with their founders.
Laminate, Cross-Ply
Consists of an arbitrary number of layers of the same material and thickness but with alternating orientations of 0 degrees and 90 degrees.
Material Properties Generic E-Glass Epoxy
Material properties of generic E-glass epoxy unidirectional prepreg.
Composite Materials Properties Database
Database of composite material properties.: composite materials properties material properties database carbon graphite database material content database
Quartz Fibers
Fibers produced from high purity (99.95%) SiO2.: silica fiber silica glass linear thermal expansion quartz fiber silica sand
Material Properties AS4/APC2 Carbon PEEK
Material properties of AS4/APC2 carbon PEEK unidirectional prepreg.
Carbon Fiber
Carbon fiber is an extremely strong yet very lightweight reinforcing fiber used in composite products. It is often used in high-end sporting goods, aerospace, and military applications.
SACMA Recommended Methods Test Manual for...
Contents of the Suppliers of Advanced Composite Materials Association (SACMA) Recommended Methods test manual.
Natural Composites
Wood is a natural composite material containing an orientated hard phase, for strength and stiffness, and a softer one for toughness.
Netting Analysis
The analysis of filament-wound structures which assumes (1) that the stresses induced in the structure are carried entirely by the filaments, and the strength of the resin is neglected; and (2) that the filaments possess no bending or shearing stiffness, and carry only the axial tensile loads.
Aspect Ratio
(1) In fiber technology, the ratio of length to diameter of a fiber.
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.
Static Stress
A stress in which the force is constant or slowly increasing with time.
The compacting or squeezing out of air and volatiles between plies or prepreg laminates under moderate heat and vacuum to insure seating on the tool, to prevent wrinkles, and to promote adhesion.
Hybrid Composites
There are several types of hybrid composites characterized as: (1) interply or tow-by-tow, in which tows of the two or more constituent types of fiber are mixed in a regular or random manner; (2) sandwich hybrids, also known as core-shell, in which one material is sandwiched between two layers of another; (3) interply or laminated, where alternate layers of the two (or more) materials are stacked in a regular manner; (4) intimately mixed hybrids, where the constituent fibers are made to mix as randomly as possible so that no over-concentration of any one type is present in the material; (5) other kinds, such as those reinforced with ribs, pultruded wires, thin veils of fiber or combinations of the above.
Hardening of Concrete
The stage in the chemical reaction between cement and water when the concrete hardens and gains sufficient strength to support its own weight and construction load.
Geopolymer Composites: A Ceramic Alternative...
The 105th Annual Meeting and Exposition of the American Ceramic Society covered a wide range of topics. As part of the symposium on ceramic matrix composites, a special session on geopolymer composites was held. First developed in France several decades ago, geopolymers are being investigated as an alternative to organic matrices.
Redundant Structure
A structure with extra internal load paths or external supports in excess of the minimum required for stability.
Solvent Resistance
The ability of a plastic material to withstand exposure to a solvent including dissolution and swelling.
A term for nearly perfect, single-crystal fibers produced synthetically under controlled conditions.
Aldila Introduces New Graphite Golf Shafts
Aldila is introducing two new HM-40 graphite golf shafts.
Threshold Temperature
In differential thermal analysis, threshold temperature is that part of the curve where the slope changes in the direction indicating an exchange of heat in the sample.
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.
Careers in Composites - Composite Materials
Career options in the composites industry, from your About.com Guide
Material Properties T300/934 Carbon Epoxy
Material properties of T300/934 carbon epoxy unidirectional prepreg.
Composites In Transportation
Composites are the material of choice in modern transportation due to their lightweight and high-strength properties.
Health and Safety: Resins - Composite Materials...
Health and safety issues when dealing with composites, from your About.com Guide
Parabeam Glass Fabrics
Parabeam glass fabrics are a novel way to increase the structure and strength of a composite product, without dramatically increasing the weight.
Proportional Limit
The greatest stress which a material is capable of sustaining without deviation from proportionality of stress and strain (Hooke's Law) or the point on the stress-strain curve at which stress ceases to be proportional to strain.
Devulcanizing Rubber - Composite Materials
Goodyear Patents Devulcanizing Process, from your About.com Guide
Fiberglass Insulation - Composite Materials...
How fiberglass insulation works, from your About.com Guide
Bismaleimide Resins
These addition-type polyimides or maleimide-based polyimides are used in high performance structural composites requiring higher temperature use and increased toughness.
Ablative Material
A term applied to any polymer or resin with low thermal conductivity which pyrolyzes layer-by-layer when its surface is heated, leaving a heat-resisting layer of charred material which eventually breaks away to expose virgin material.
Drilling Graphite - Composite Materials
The best drill bits for drilling graphite, from your About.com Guide
Complex Dielectric Constant
The vectorial sum of the dielectric constant and the loss factor in unity dimensions analagous to complex shear modulus and to complex Young's modulus.
Elongation at Break
Elongation recorded at the moment of rupture of the specimen, often expressed as a percentage of the original length.
Software Used in Composites
Learn about the software used in composites, when designing products or creating a visual prototype on a computer.
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.
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.
Dictionary of Composite Materials Technology
Introduction to the Composite Materials Glossary.
Statistics and the Strength of Composite...
Effect of statistical distributions on composite material strength.
Rockwell Hardness
The hardness of a material expressed as a number derived from the net increase in depth of impression as the load on an indentor is increased from a fixed minor amount to a major load and then returned to the minor load.
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.
Constituent Materials
The individual materials that make up a composite material.
Anti-Foaming Agent
An additive which reduces the surface tension of a solution or emulsion, thus inhibiting or modifying the formation of a foam.
Shear Coupling
The shear strain induced from normal stress which is unique to anisotropic materials.
As used in yarn manufacture and textile engineering, tenacity denotes the strength of a yarn or a filament of given size.
Random Sampling
The selection of units for a sample size in which all combinations under consideration have an equal chance of selection.
Curing Time
(1) The period of time during which a part is subjected to heat and/or pressure, to cure the resin.
Factors of Safety - Composite Materials Date:...
Information about the role of composites in the F-117A crash, from your About.com Guide
Wet and Dry Sandpaper
An abrasive paper that can be used with water or other lubricants, making possible the sanding of some plastics and metals that is not possible with dry sanding.
Molecular Weight Distribution
The relative amounts of polymers of different molecular weights that comprise a given specimen of a polymer.
Notes for the Composite Materials Properties...
Notes for the composite materials properties database.
Scotch Tape Test
A method for evaluating the adhesion of a coating to a substrate.
A chemical reaction in linking the molecules of a simple substance (monomer) together to form large molecules whose molecular weight is a multiple of that of the monomer.
External Load
An applied outside load that is applied to a system, part or structure as opposed to a reacting internal load.
Matlab Code to Generate Composite ABBD Matrices
Now we have everything we need to relate applied moments and forces to strains and curvatures %Generate
VOCs In Composites
Volatile Organic Compounds (VOCs), are a emissions that can be released during and after plastics manufacturing. Learn more about these here.
Having relatively great consistency.
Viscosity, Intrinsic
A measure of the capability of a polymer in solution to enhance the viscosity of the solution.
CIPP - Cure In Place Pipe
CIPP, or Cured In Place Piping is a method of using composite materials to repair a pipe or drain with out digging.
Glass Matrix Composites
Glass (a relatively inert, inorganic thermoplastic) lends itself to composite processing methods applicable to polymers such as melt infiltration and compression molding.
(1) Acrylic acid esters.
Setting Up a Composites Shop
The basic requirements for starting a manufacturing facility for composite structures.
The matrix is the constituent in a composite that holds the reinforcement in place. Learn more about this component of composite materials.
Hand Lay-up
An open mold process in which components or successive plies of reinforcing material or resin-impregnated reinforcements are applied to the mold, and the composite is built up and worked by hand.
Fiberglass is a strong and lightweight structural material, that when combined with a polymer resin, creates a composite.
Describes the method of supply of the roving yarn (that is, milk bottle package, twisted tube, etc.
Health and Safety: Fibers - Composite Materials...
Health and safety issues when dealing with composites, from your Mining Company Guide
Lacking the property of absorbing and retaining an appreciable quantity of moisture from the air.
Bulk Factor
(1) The ratio of the thickness of uncured, prepreg materials to their thickness when fully cured.
Composite Manufacturing Tips
When manufacturing composites in a production environment, it is important to follow these tips to create better parts, and faster.
Material Properties Generic IM6/Epoxy Carbon...
Material properties of generic IM6/epoxy carbon epoxy unidirectional prepreg.
Trade Name Index (C) - Composite Materials
Composite materials listed by trade name, from your About.com Guide
Advanced Grid Structures - Composite Materials...
OSP update covering development tooling and fairing schedule, from your About.com Guide
Strength Ratio or Strength/Stress Ratio
A useful measure related to the margin of safety.: strength ratio margin of safety safety factor unity stress
Material Properties AS/3501 Carbon Epoxy
Material properties of AS/3501 carbon epoxy unidirectional prepreg.
Review of Fibre Metal Laminates an Introduction
Fibre Metal Laminates covers the properties of the new Glare material in detail. This is the first reference any engineer working with Glare should turn to.
Amine Value
The number of milligrams of potassium hydroxide equivalent to the amine basicity in 1 g of sample.
The measurement of softness as opposed to stiffness of a material.
Critical Temperature
(1) The temperature above which the vapor phase cannot be condensed to liquid by an increase in pressure.
Composite Structure
A structural member fabricated by joining together distinct components.
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