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unidirectional fiber composites

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Book Chapter

Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003377
EISBN: 978-1-62708-195-5
...Abstract Abstract A unidirectional fiber composite (UDC) consists of aligned continuous fibers that are embedded in a matrix. This article describes a variety of analytical methods that are used to determine the various physical properties of the UDC. These properties include elasticity...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003399
EISBN: 978-1-62708-195-5
... to develop tailored composites and also to make accurate predictions of their performance in service. This article reviews results derived from micromechanics analyses, based on finite-element method of unidirectional fiber reinforced metal matrix composites (MMCs). It discusses the elastic deformation...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003572
EISBN: 978-1-62708-180-1
...Abstract Abstract This article reviews the abrasive and adhesive wear failure of several types of reinforced polymers, including particulate-reinforced polymers, short-fiber reinforced polymers (SFRP), continuous unidirectional fiber reinforced polymers (FRP), particulate-filled composites...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003033
EISBN: 978-1-62708-200-6
... fibers. It describes the functions, types, and chemical composition of fiber sizing agents. The article discusses the styles, properties, applications, and weaving methods of unidirectional, two-directional and multidirectionally reinforced fabrics. The article also reviews the use of prepreg resins...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0009077
EISBN: 978-1-62708-177-1
... with unidirectional carbon fiber prepreg that shows a ply separation in the part. Bright-field illumination, 5× objective Fig. 3 Ply splices shown in a carbon fiber composite cross section. Bright-field illumination, 5× objective Fig. 4 Montage of ply wrinkling in a composite material developed...
Book Chapter

Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003383
EISBN: 978-1-62708-195-5
... in fiber diameter. Second, the problem of misalignment is not insignificant, as is shown subsequently for angle-ply composites. Third, any structural imperfections, such as cracks and debonds, lead to interfacial rubbing and, hence, to additional losses. Finally, the unidirectional lamina is very often...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003443
EISBN: 978-1-62708-195-5
... Using a Sandwich Beam D 5528 Standard Test Methods for Mode I Interlaminar Fracture Toughness of Unidirectional Fiber-Reinforced Polymer-Matrix Composites D 6415 Standard Test Method for Measuring the Curved Beam Strength of a Fiber-Reinforced Polymer-Matrix Composite ISO standard (b...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003378
EISBN: 978-1-62708-195-5
... of unidirectional composite (UDC) materials are quite different from those of conventional, metallic materials. This article provides information on the treatment of UDC stress-strain relations in the forms appropriate for analysis of thin plies of material. It explains the development of the relations between mid...
Book Chapter

Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003360
EISBN: 978-1-62708-195-5
...Properties of graphite, aramid, and hybrid fabric composites compared to 0°/90° laminates made from unidirectional layers (data normalized to 65 vol% fiber) Table 2 Properties of graphite, aramid, and hybrid fabric composites compared to 0°/90° laminates made from unidirectional layers (data...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003418
EISBN: 978-1-62708-195-5
... increases, the pattern width decreases and the pattern length increases. For very steep angles, long, thin patterns are needed. If precise fiber alignment is required, multiple convolute wrapping can present a problem. This is best illustrated by considering a multiple wrap using unidirectional tape...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003379
EISBN: 978-1-62708-195-5
... refer to fiber, matrix, longitudinal, and transverse, respectively. Fig. 10 Damage initiation, propagation, and ultimate failure of biaxially loaded E-glass/epoxy composite tubes. σ 2 t and σ 2 c are axial tension and compression. τ 12 is in-plane shear stress. Fig. 8...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003044
EISBN: 978-1-62708-200-6
... the material, the more limited the method of testing. A method that works adequately for chopped fiber composites may not work for unidirectional materials. A method that works for unidirectional materials probably will work well for all materials, although it may not always be the most cost effective...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003409
EISBN: 978-1-62708-195-5
...- velocity bullets. Space satellite structures are optimized for extreme low weight and just enough robustness to reliably survive launch vibrations; such structures can have laminate stiffnesses of up to 280 GPa (41 × 10 6 psi), more than double that of standard carbon fiber unidirectional laminates. One...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003426
EISBN: 978-1-62708-195-5
... waste than woven products, unidirectional products lend themselves to automated lay-up in tape-laying machines, and unidirectional products may provide a smoother aerodynamic external surface than woven products. It is not uncommon to mix composite types and fiber materials to better utilize...
Book Chapter

By Greg Kress
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003392
EISBN: 978-1-62708-195-5
... efficiently evaluate all of the options and more easily eliminate unacceptable alternatives. Common composites material selection options are: Fiber types: Glass, carbon, aramid, boron, polyethylene, ceramic, tungsten Fiber forms: Unidirectional, woven fabric, random mat, chopped fiber...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001101
EISBN: 978-1-62708-162-7
.... , High Pressure Squeeze Casting of Unidirectional Graphite Fiber Reinforced Aluminum Matrix Composites , in Cast Reinforced Metal Composites , Fishman S.G. and Dhingra A.K. , Ed., ASM INTERNATIONAL , 1988 , p 179 24. Rubin L. , “Data Base Development for P100 Graphite...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0009078
EISBN: 978-1-62708-177-1
... Fig. 1 Glass fabric composite that has high void content. Void areas are due to residual solvent from the prepregging process. Bright-field illumination, 10× objective Fig. 2 Laminate made with unidirectional carbon fiber prepreg and woven carbon fabric prepreg plies. Voids are shown...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003330
EISBN: 978-1-62708-176-4
... for composites. The properties reduced from tension tests on composite materials are effective (averaged) properties. The test method applies to unidirectional composites but can also be performed on laminates, woven fabrics, or discontinuous fiber composites. For asymmetric and/or unbalanced laminates...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002415
EISBN: 978-1-62708-193-1
... aluminum and various fiber-metal laminate types Fig. 21 0° fiber stress range versus number of cycles to failure at 650°C and room temperature. Source: Ref 36 Fig. 22 The life of the unidirectional composite and the matrix as a function of maximum strain at 650 °C. Ref 36...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003382
EISBN: 978-1-62708-195-5
.... Whitney J.M. , “Fatigue Characterization of Composite Materials,” AFWAL-TR-79-4111, Air Force Materials Laboratory, 1979 12. Kadi E.H. and Ellyin F. , Effect of Stress Ratio on Fatigue of Unidirectional Glass Fiber/ Epoxy Composite Laminates , Composites , Vol 25 , 1994 13...