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Why Composite Design
Viewed 1099 times since Sat, Aug 20, 2011
Composite materials offer many exceptional properties that are difficult or impossible to match with traditional materials, such as steel, aluminum and wood. Today, they are used in almost every dynamic, high performance structure whether... Read More
Selecting The Right Fiber: The Lightweight, High Strength and Stiffness Solution
Viewed 445 times since Sun, Aug 21, 2011
Fibers used in composite components take one of three forms: milled fiber (almost like dust), chopped short fiber (up to ½ inches long), and long continuous fiber. The longer the a fiber is in a composite material, the stiffer and stronger the... Read More
Overview of new developments in composite materials for industrial and mining applications
Viewed 336 times since Thu, Jan 3, 2013
Because composites offer new solutions to materials problems, they are currently the focus of intense research and development worldwide. However, the natural tendency of users is to remain with tried materials in every situation of material... Read More
Overview of Fiber-Reinforced Composites
Viewed 445 times since Sat, Nov 26, 2011
It is reasonable to begin an introduction to composite materials by defining just what these materials are. It turns out, however, that materials technologists are always arguing about such definitions. What is a ceramic, for instance?... Read More
Viewed 492 times since Thu, Jan 3, 2013
Composite materials are macroscopic combinations of two or more distinct materials having a discrete and recognizable interface separating them. Thus composites are heterogeneous materials, and many are naturally occurring; the most common is wood.... Read More
Viewed 520 times since Wed, Aug 24, 2011
The main objectives of this standard is to: — serve as a basic philosophy and standard — provide an internationally acceptable standard for safe design with respect to strength and performance by defining minimum requirements for design,... Read More
Module11: Engineering Applications of Composite Materials
Viewed 521 times since Sun, Mar 18, 2012
Composites are one of the most widely used materials because of their adaptability to different situations and the relative ease of combination with other materials to serve specific purposes and exhibit desirable properties. In surface... Read More
Viewed 897 times since Thu, Oct 27, 2011
Based on the above parameters, the corresponding mechanical parameters for any angle lamina can be determined. How to determine these mechanical parameters for a particular lamina? One most direct way is through experiments. However, experimental... Read More
Manual of Aerospace Composites
Viewed 288 times since Thu, Nov 28, 2013
This first volume. written while the author was senior group engineer in charge of fuselage design for the Lear-Fan 2100, concentrates on many details which have been tried and proven in aerospace composite design, with additional reference, where... Read More
Viewed 799 times since Thu, Oct 27, 2011
As mentioned in Chapter 1, an important advantage of using composite materials is the so-called tailor-able properties. This is achieved mainly through design of an optimal laminate including fiber orientation, lay-up sequence or different composite... Read More
Viewed 872 times since Thu, Oct 27, 2011
As mentioned in Chapter 1, the stresses will vary from point to point in a lamina even if a simplest uniaxial loading is applied on the lamina. Accounting for these variations will make mechanical modeling of the lamina very complicated. For this... Read More
Kirchhoff Plates: Field Equations
Viewed 864 times since Tue, Aug 21, 2012
Multifield variational principles were primarily motivated by "difficult” structural models, such as plate bending, shells and near incompressible behavior. In this Chapter we begin the study of one of those difficult problems: plate bending. Read More
Guide for the Design and Construction of Structures made of FRP Pultruded Elements
Viewed 310 times since Wed, Oct 23, 2013
This document deals with structures made of FRP pultruded elements. The most common reinforcing fibres are glass, carbon and aramid. Current applications in the field of civil engineering generally use glass fibres, with specific reference being made... Read More
Formulas and Equations for the Classical Laminate Theory
Viewed 298 times since Wed, Jul 23, 2014
In this document, we prepared a collection of formulas and equations for the classical laminate theory. The first objective was to propose a quick reference booklet with the most important formulas to calculate the stiffness and the compliance matrix... Read More
Viewed 572 times since Thu, Oct 27, 2011
After learning the mechanics for lamina and laminate, we are now at a stage to use the knowledge in design of laminated composite structural members for practical applications. Design of laminated composites includes selecting a material system or a... Read More
Viewed 698 times since Sun, Mar 18, 2012
Polyesters and epoxies are both families of thermosetting resins. The fundamental difference is the type of reactive chemical group that is involved in the crosslinking reaction. For polyesters, the reactive group is a double bond between two carbon... Read More
Design Concepts
Viewed 233 times since Sat, Apr 19, 2014
Heterogeneous laminates should be avoided for strength-critical designs unless analysis and test data is available that indicates a clear advantage. The best way to view possible strength problems with heterogeneous LSS is to consider the behavior of... Read More
Viewed 662 times since Thu, Dec 15, 2011
Damping occurs when vibrational energies are converted into some other energy form, usually heat. The kinds of vibration that people in the composites field are most often concerned with are either mechanical vibrations or acoustic... Read More
Composites: Long-Term Viability and Benefits
Viewed 513 times since Sat, Nov 26, 2011
Since the 1960’s, composites have evolved in technical sophistication and gained acceptance as the material of choice for many high performance marine craft. Notwithstanding this, there is limited understanding and recognition of the... Read More
Viewed 1005 times since Sat, Nov 26, 2011
Typically, reinforcing materials are strong with low densities while the matrix is usually a ductile, or tough, material. If the composite is designed and fabricated correctly, it combines the strength of the reinforcement with the ... Read More
Composite Materials - Web Based Course
Viewed 505 times since Fri, Nov 11, 2011
Mankind has been aware composite materials since several hundred years before Christ and applied innovation to improve the quality of life. Although it is not clear has to how Man understood the fact that mud bricks made sturdier houses if lined with... Read More
Viewed 480 times since Fri, Nov 11, 2011
‘Composites’, as the name implies, are materials in combination. There are a few important applications for pure materials (e.g. in electronics), but almost all of the commercially significant materials in use today involve some... Read More
Common Lay-up Terms and Conditions
Viewed 325 times since Wed, Sep 11, 2013
The Warp Clock is the standard for determining ply orientation. It is also how – and + angled plies are defined. The 0º axis is always parallel to the long direction of the structure or rectangular panel. The 90º axis is always perpendicular to... Read More
Classical Laminate Theory of Composites
Viewed 3297 times since Tue, Nov 8, 2011
Composites in engineering components are often found in a layered structure. Laminates can be made, for instance, by stacking preimpregnated cloths (prepregs), e.g. for making panels, or by filament winding, e.g. for pipes. Suitable techniques are... Read More
Carbon-Carbon Composites - An Overview
Viewed 480 times since Sat, Oct 22, 2011
Carbon-carbon composites are a new class of engineering materials that are ceramic in nature but exhibit brittle to pseudoplastic behaviotir. Carbon-carbon is a unique all-carbon composite with carbon fibre embeded in carbon matrix and is... Read More
Viewed 976 times since Sat, Oct 22, 2011
The paper addresses one of the concepts of carbon fiber fuselage for a big passenger air plane, "Lampassenkonzept” proposed by the Institute of Structural Mechanics of the Ger man Aerospace Center (DRL, Braunschweig) ... Read More
Viewed 459 times since Thu, Oct 27, 2011
Fiber composites are often used in the form of beam or plate structures. The analysis of composite beams or plates follows the basic fundamentals as usually presented in strength-of-materials texts for beams and plates of isotropic materials. Read More
Viewed 518 times since Tue, Nov 8, 2011
A detailed analysis of composite structures can provide information about the stress-strain state, strength, stiffness, stability and vibrational behaviour of structural elements. The analytic methods are those used in solid ... Read More
Viewed 441 times since Sat, Sep 24, 2011
In less than two decades, advanced composites have become established as the most efficient high performance structural materials, and their use is increasing rapidly. Read More
A Software Tool for Mechanics of Composite Materials
Viewed 558 times since Mon, Sep 12, 2011
An introductory course in mechanics of composite materials involves simple linear algebra procedures that are otherwise lengthy [2]. So to appreciate the fundamentals, show intermediate steps in analysis, and conduct industrial... Read More
A General Introduction to Composite Materials
Viewed 587 times since Thu, Oct 27, 2011
In their broadest form, composites are materials consist of two or more constituents. The constituents are combined in such a way that they keep their individual physical phases and are not soluble in each other or not to form a new chemical compound... Read More