Composites / Plastics: Most Popular Articles
These articles are the most popular over the last month.
Composite Materials Properties Database
Database of composite material properties.
Database of composite material properties.
Dictionary of Composite Materials Technology
Introduction to the Composite Materials Glossary.
Introduction to the Composite Materials Glossary.
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
A Brief History of Kevlar
Introduction to Kevlar fibers and their properties.
Introduction to Kevlar fibers and their properties.
Lincoln Composites Builds Largest CNG Fuel Tank
Lincoln Composites has designed, manufactured, and qualified the largest natural gas vehicle (NGV) fuel tank in the world. These tanks allow the cost of the CNG package of the vehicle to be lowered by hundreds of dollars while also reducing the vehicle weight by hundreds of pounds.
Lincoln Composites has designed, manufactured, and qualified the largest natural gas vehicle (NGV) fuel tank in the world. These tanks allow the cost of the CNG package of the vehicle to be lowered by hundreds of dollars while also reducing the vehicle weight by hundreds of pounds.
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.
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.
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
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.
Mineral Spirits
A refined petroleum distillate (150-200 C) having a low aromatic hydrocarbon content, with volatility, flash point, and other properties making it suitable as a thinner and solvent.
A refined petroleum distillate (150-200 C) having a low aromatic hydrocarbon content, with volatility, flash point, and other properties making it suitable as a thinner and solvent.
Prepreg
Short for preimpregnated.
Short for preimpregnated.
Aldila Introduces New Graphite Golf Shafts
Aldila is introducing two new HM-40 graphite golf shafts.
Aldila is introducing two new HM-40 graphite golf shafts.
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
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.
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.
Magnesium Stearate
A white, soft powder used as a lubricant and stabilizer.
A white, soft powder used as a lubricant and stabilizer.
Index of Fiberglass Composite Materials Properties
Index of material properties for fiberglass composite materials.
Index of material properties for fiberglass composite materials.
Sieve Analysis
A determination of the proportions of particles lying within certain size ranges in a granular material by separation on sieves of different size openings.
A determination of the proportions of particles lying within certain size ranges in a granular material by separation on sieves of different size openings.
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.
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.
Banbury Mixer
An apparatus used for mixing or compounding plastics and interspersing reinforcing fillers in a resin system.
An apparatus used for mixing or compounding plastics and interspersing reinforcing fillers in a resin system.
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.
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.
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.
Lower Explosive Limit
Lower limit of flammability or explosibility of a gas or vapor at ordinary ambient temperatures expressed in percent of the gas vapor in air by volume.
Lower limit of flammability or explosibility of a gas or vapor at ordinary ambient temperatures expressed in percent of the gas vapor in air by volume.
Sports Watch Features Aramid Composite Casing
Oakley's new sports watch has an aramid-epoxy casing and Unobtainium strap.
Oakley's new sports watch has an aramid-epoxy casing and Unobtainium strap.
Composite Materials Glossary - A
Index for the Dictionary of Composite Materials Technology - A
Index for the Dictionary of Composite Materials Technology - A
Welding
The joining of two or more pieces of plastic by fusion at adjoining or nearby areas either with or without the addition of plastic from another source.
The joining of two or more pieces of plastic by fusion at adjoining or nearby areas either with or without the addition of plastic from another source.
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.
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.
Ambient Temperature
The temperature of the medium surrounding an object.
The temperature of the medium surrounding an object.
Ethyl Alcohol
A colorless volatile liquid used as a solvent.
A colorless volatile liquid used as a solvent.
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.
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.
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.
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.
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.
Fabric Terminology for Composite Materials
Definition of terms used to describe engineering fabrics.
Definition of terms used to describe engineering fabrics.
Stand-Alone System
A system that is completely operational without requiring external support.
A system that is completely operational without requiring external support.
Effective Modulus of Elasticity of Concrete
The deformation of concrete under load is partly due to instantaneous elastic deformation and time-dependent creep.
The deformation of concrete under load is partly due to instantaneous elastic deformation and time-dependent creep.
Bearing Stress
The applied load divided by the bearing area.
The applied load divided by the bearing area.
Shipset
The full complement of a part assembly required to equip and complete one specified aerospace vehicle for full operation.
The full complement of a part assembly required to equip and complete one specified aerospace vehicle for full operation.
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.
Sheet Molding Compound
A fiber glass reinforced thermosetting compound in sheet form, usually rolled into coils interleaved with plastic film to prevent autoadhesion.
A fiber glass reinforced thermosetting compound in sheet form, usually rolled into coils interleaved with plastic film to prevent autoadhesion.
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.
Wave Train
A succession of waves arising from the same source, having the same characteristics and propagating along the same path.
A succession of waves arising from the same source, having the same characteristics and propagating along the same path.
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.
Polyacrylate
A family of thermoplastic engineering resins made by the polymerization of an acrylic compound such as methyl methacrylate.
A family of thermoplastic engineering resins made by the polymerization of an acrylic compound such as methyl methacrylate.
Radius of Gyration
The radial distance from a given axis at which the mass of a body could be concentrated without altering the rotational inertia of the body about that axis.
The radial distance from a given axis at which the mass of a body could be concentrated without altering the rotational inertia of the body about that axis.
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.
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.
Centistokes
One one-hundredth of a stokes, which is the unit of kinematic viscosity and is equal to the viscosity in poises divided by the density of the fluid in grams per cc.
One one-hundredth of a stokes, which is the unit of kinematic viscosity and is equal to the viscosity in poises divided by the density of the fluid in grams per cc.
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.
Decantation
(1) Pouring of siphoning off the liquid from a precipitate or sediment.
(1) Pouring of siphoning off the liquid from a precipitate or sediment.
QUANTUM Demonstrates High Pressure Composite Hydrogen Tank
QUANTUM Technologies has demonstrated an all-composite hydrogen storage tank that stores hydrogen at 10,000 psi (700 Bar). At 10,000 psi, 80% more hydrogen fuel can be stored in a given space than at 5,000 psi -- dramatically increasing the range of fuel cell mobile applications.
QUANTUM Technologies has demonstrated an all-composite hydrogen storage tank that stores hydrogen at 10,000 psi (700 Bar). At 10,000 psi, 80% more hydrogen fuel can be stored in a given space than at 5,000 psi -- dramatically increasing the range of fuel cell mobile applications.
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.
Carbitol
Monoethyl ether of diethylene glycol; a water-miscible solvent.
Monoethyl ether of diethylene glycol; a water-miscible solvent.
Composite Materials - The Pultrusion Process: 10/13/97 from About.com
An overview of the pultrusion manufacturing process, from your Mining Company Guide
An overview of the pultrusion manufacturing process, from your Mining Company Guide
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 Materials Glossary - S
Index for the Dictionary of Composite Materials Technology - S
Index for the Dictionary of Composite Materials Technology - S
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.
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.
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.
Advanced Grid Structures - Composite Materials Date: 05/25/98
OSP update covering development tooling and fairing schedule, from your About.com Guide
OSP update covering development tooling and fairing schedule, from your About.com Guide
Material Properties Generic E-Glass Epoxy
Material properties of generic E-glass epoxy unidirectional prepreg.
Material properties of generic E-glass epoxy unidirectional prepreg.
Composite Materials Glossary - Abbreviations and Acronyms
Abbreviations and acronyms from the composite materials glossary
Abbreviations and acronyms from the composite materials glossary
Dodge Viper Concept Car - Composite Materials
Dodge Viper GTS/R Has One-Piece Carbon Composite Body, from your About.com Guide
Dodge Viper GTS/R Has One-Piece Carbon Composite Body, from your About.com Guide
What's a Composite?
A brief description and definition of composite materials.
A brief description and definition of composite materials.
Plastic Flow
(1) A fluid movement that is proportional to the pressure in excess of a certain minimum pressure (yield value) to begin the flow.
(1) A fluid movement that is proportional to the pressure in excess of a certain minimum pressure (yield value) to begin the flow.
Essential Resources for Composite Materials
A collection of the most useful online resources for the composites industry.
A collection of the most useful online resources for the composites industry.
Review of Manufacturing of Polymer Composites
Review of Manufacturing of Polymer Composites by B.T. Astrom.
Review of Manufacturing of Polymer Composites by B.T. Astrom.
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.
Emery Cloth
Abrasive coated cloth used for light polishing of metal.
Abrasive coated cloth used for light polishing of metal.
Fumed Silica
An exceptionally pure form of silicon dioxide made by reacting silicon tetrachloride in an oxy-hydrogen flame.
An exceptionally pure form of silicon dioxide made by reacting silicon tetrachloride in an oxy-hydrogen flame.
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.
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.
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.
Hydroxyl Value
A measure of hydroxyl (univalent OH) groups in an organic material.
A measure of hydroxyl (univalent OH) groups in an organic material.
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.
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.
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.
Amination
The process in which the amino group is introduced into an organic molecule.
The process in which the amino group is introduced into an organic molecule.
Blowing Agent
Any substance which alone or in combination with other substances is capable of producing a cellular structure in a plastic.
Any substance which alone or in combination with other substances is capable of producing a cellular structure in a plastic.
Material Properties AS/3501 Carbon Epoxy
Material properties of AS/3501 carbon epoxy unidirectional prepreg.
Material properties of AS/3501 carbon epoxy unidirectional prepreg.
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
Thermal Stability
The resistance to permanent change in properties caused solely by heat.
The resistance to permanent change in properties caused solely by heat.
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.
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.
Sulfonation
The introduction into an organic molecule of the sulfonic acid group (or its salts), -SO3H, where the sulfur atom is joined to a carbon atom of the parent molecule.
The introduction into an organic molecule of the sulfonic acid group (or its salts), -SO3H, where the sulfur atom is joined to a carbon atom of the parent molecule.
Finding a Job in the Composite Materials Industry
Finding a composites job is similar to finding any technical job, but there are some specialized resources that can aid in the search.
Finding a composites job is similar to finding any technical job, but there are some specialized resources that can aid in the search.
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.
Brale
A diamond penetrator of specified spheroconical shape used with the Rockwell hardness tester for hard metals.
A diamond penetrator of specified spheroconical shape used with the Rockwell hardness tester for hard metals.
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
Proof Load
A predetermined load, generally a multiple of the service load, to which a specimen or structure is subjected before acceptance.
A predetermined load, generally a multiple of the service load, to which a specimen or structure is subjected before acceptance.
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.
Test, Bursting Strength
A test for measuring the resistance of a material or product to bursting and reported in kilopascals or pounds per square inch.
A test for measuring the resistance of a material or product to bursting and reported in kilopascals or pounds per square inch.
Fracture Strength
The normal stress at the beginning of fracture.
The normal stress at the beginning of fracture.
Composite Materials Glossary - C
Index for the Dictionary of Composite Materials Technology - C
Index for the Dictionary of Composite Materials Technology - C
Drilling Graphite - Composite Materials
The best drill bits for drilling graphite, from your About.com Guide
The best drill bits for drilling graphite, from your About.com Guide
Carbon Black
A generic term for the family of colloidal carbons.
A generic term for the family of colloidal carbons.
Least Significant Difference-5% Level
The difference between two measurements or two sample averages that would be exceeded only 1 in 20 times under simple random sampling from a specified population of differences, or from sampling of two populations with the same mean and variance.
The difference between two measurements or two sample averages that would be exceeded only 1 in 20 times under simple random sampling from a specified population of differences, or from sampling of two populations with the same mean and variance.
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.
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.
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.
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.
Trade Name Index (A - B) - Composite Materials
Composite materials listed by trade name, from your About.com Guide
Composite materials listed by trade name, from your About.com Guide
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.
Amine Value
The number of milligrams of potassium hydroxide equivalent to the amine basicity in 1 g of sample.
The number of milligrams of potassium hydroxide equivalent to the amine basicity in 1 g of sample.
Schmidt Hammer
An instrument used for the nondestructive testing of hardened concrete based on the rebound of a steel hammer from the concrete surface being proportional to the compressive strength of concrete.
An instrument used for the nondestructive testing of hardened concrete based on the rebound of a steel hammer from the concrete surface being proportional to the compressive strength of concrete.
Plaster-Mold Casting
A process using gypsum-plaster molds instead of sand molds.
A process using gypsum-plaster molds instead of sand molds.
Stress Concentration Factor
The ratio of the maximum stress in the region of a stress concentrator (notch) to the stress in a similarly strained area without a stress concentrator.
The ratio of the maximum stress in the region of a stress concentrator (notch) to the stress in a similarly strained area without a stress concentrator.
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.
Thixotropic
Describes a material which undergoes a reduction in viscosity when shaken, stirred or otherwise mechanically disturbed and which readily recovers the original condition on standing.
Describes a material which undergoes a reduction in viscosity when shaken, stirred or otherwise mechanically disturbed and which readily recovers the original condition on standing.
Index of Aramid Composite Material Properties
Index of material properties for aramid composite materials.
Index of material properties for aramid composite materials.
Bismaleimide Resins
These addition-type polyimides or maleimide-based polyimides are used in high performance structural composites requiring higher temperature use and increased toughness.
These addition-type polyimides or maleimide-based polyimides are used in high performance structural composites requiring higher temperature use and increased toughness.
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.
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..
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
QUANTUM Developing Natural Gas Fuel System for Hyundai
QUANTUM Technologies has been awarded a contract by Hyundai America Technical Center, Inc. (HATCI) to develop and install a dedicated compressed natural gas fuel injection system for Hyundai's new Elantra super ultra-low emissions vehicle (SULEV).
QUANTUM Technologies has been awarded a contract by Hyundai America Technical Center, Inc. (HATCI) to develop and install a dedicated compressed natural gas fuel injection system for Hyundai's new Elantra super ultra-low emissions vehicle (SULEV).
Fiber Volume Fraction of a Composite Materials
The volume of fiber in a cured composite.
The volume of fiber in a cured composite.
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.
Time-Weighted Average
Concentration in ppm or mg/cm^3 of a chemical component multiplied by the time of each individual sampling period, summed for all samples taken during an interval and divided by the total sampling time.
Concentration in ppm or mg/cm^3 of a chemical component multiplied by the time of each individual sampling period, summed for all samples taken during an interval and divided by the total sampling time.
Loss Tangent
See DISSIPATION FACTOR-ELECTRICAL and -MECHANICAL.
See DISSIPATION FACTOR-ELECTRICAL and -MECHANICAL.
Cold Flow
The distortion, deformation, or dimensional change which takes place in materials under continuous load at temperatures within the working range (cold flow is not due to heat softening).
The distortion, deformation, or dimensional change which takes place in materials under continuous load at temperatures within the working range (cold flow is not due to heat softening).
Monodispersity
The state of uniformity in molecular weight of all molecules of a substance or of a polymer system which is homogeneous in molecular weight.
The state of uniformity in molecular weight of all molecules of a substance or of a polymer system which is homogeneous in molecular weight.
Chapters Contents of MIL-HDBK-23A
List of chapters in MIL-HDBK-23A, the Military Handbook on Structural Sandwich Composites.
List of chapters in MIL-HDBK-23A, the Military Handbook on Structural Sandwich Composites.
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.
Composites FAQ
Frequently asked questions about composite materials.
Frequently asked questions about composite materials.
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.
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.
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.
Thixotropy
The property of a material which enables it to stiffen or thicken on a relatively short time upon standing but upon agitation or manipulation to change to a very soft consistency or a high viscosity fluid; a reversible process.
The property of a material which enables it to stiffen or thicken on a relatively short time upon standing but upon agitation or manipulation to change to a very soft consistency or a high viscosity fluid; a reversible process.
Static Load
A steady state load or a load at rest.
A steady state load or a load at rest.
Heat Resistance
The property or ability of plastics and elastomers to resist the deteriorating effects of elevated temperatures.
The property or ability of plastics and elastomers to resist the deteriorating effects of elevated temperatures.
Composite Materials Glossary - B
Index for the Dictionary of Composite Materials Technology - B
Index for the Dictionary of Composite Materials Technology - B
Thermal Diffusivity
A measure of the rate at which a temperature disturbance at one point in a body travels to another point.
A measure of the rate at which a temperature disturbance at one point in a body travels to another point.
Volume Resistivity
The ratio of the potential gradient parallel to the current in a material, to the current density.
The ratio of the potential gradient parallel to the current in a material, to the current density.
Composite Materials Glossary - T
Index for the Dictionary of Composite Materials Technology - T
Index for the Dictionary of Composite Materials Technology - T
Degree of Cure
The extent to which curing or hardening of a thermosetting resin has progressed.
The extent to which curing or hardening of a thermosetting resin has progressed.
Material Properties AS4/3501-6 Carbon Epoxy
Material properties of AS4/3501-6 carbon epoxy unidirectional prepreg.
Material properties of AS4/3501-6 carbon epoxy unidirectional prepreg.
Shear Modulus
The ratio of shearing stress to shearing strain within the proportional limit of a material.
The ratio of shearing stress to shearing strain within the proportional limit of a material.
Carbinol
Monovalent primary alcohol radical.
Monovalent primary alcohol radical.
Impact Strength
(1) The ability of a material to withstand shock loading.
(1) The ability of a material to withstand shock loading.
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.
Yield Strength
(1) The stress at the yield point.
(1) The stress at the yield point.
Synthetic Resin
A complex, substantially amorphous organic semisolid or solid material (usually a mixture) processed by the chemical reaction of comparatively simple compounds.
A complex, substantially amorphous organic semisolid or solid material (usually a mixture) processed by the chemical reaction of comparatively simple compounds.
Homopolymer
A polymer resulting from the polymerization of a single monomer; a polymer consisting substantially of a single type of repeating unit.
A polymer resulting from the polymerization of a single monomer; a polymer consisting substantially of a single type of repeating unit.
Profilometer
An instrument for the measurement of the degree of surface roughness expressed in micrometers or micro-inches.
An instrument for the measurement of the degree of surface roughness expressed in micrometers or micro-inches.
Methylene Group
The radical -CH-2 or =CH2, which exists only as a component of unsaturated hydrocarbons.
The radical -CH-2 or =CH2, which exists only as a component of unsaturated hydrocarbons.