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unidirectional composite materials

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Published: 01 December 2004
Fig. 2 Cross section of a composite material made with unidirectional carbon fiber prepreg that shows a ply separation in the part. Bright-field illumination, 5× objective More
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
... of Reinforced Plastics D 4255 Standard Guide for Testing In-Plane Shear Properties of Composite Laminates. D 5379 Standard Test Method for Shear Properties of Composite Materials by the V-Notched Beam Method D 5467 Standard Test Method for Compressive Properties of Unidirectional Polymer-Matrix...
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
... into the open space. In other designs, ply splices may be required, as shown in Fig. 3 . A smooth transition of the splices is shown in this composite material. Fig. 1 Montage of micrographs taken of a cross section of a composite made from unidirectional prepreg that shows the termination of two...
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...
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
... by calibrating it with some metal of very low damping properties (such as high-strength titanium or aluminum alloys). Unidirectional Composites The basic building block of layered composite structures is a single lamina of unidirectionally reinforced material. All the fibers are considered to be parallel...
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
... composites (SFRP and particulate-filled), unidirectional FRP composites, and fabric reinforced composites. Friction and wear performance of the composites, correlation of performance with various materials properties, and studies on wear-of failure mechanisms by scanning electron microscopy are discussed...
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
... fiber (Kevlar)/epoxy composite part. Also there may be different techniques and tools for unidirectional (tape) products and woven (cloth) products. When unidirectional carbon/epoxy materials are used on the part surface, the fibers are prone to splintering and fiber breakout from the hole-drilling...
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
... materials developed with high fiber tensions can reduce the fiber tow permeability. In this situation, the initial penetration of the resin is restricted by the fiber packing and is not relaxed after prepreg processing. Figure 8 shows voids in a unidirectional carbon fiber composite material having a high...
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
... 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. Farrow I.R. , “Damage Accumulation and Degradation of Composite Laminates Under...
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
... Abstract This article describes processes and equipment that are used to produce composite tubular parts. The processes include sheeting, pattern cutting, tube rolling, shrink tape debulking, and finishing. The article provides a discussion on materials that are most suitable for tube rolling...
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
... construction is the realm of the textile engineer, but fabric mechanical properties and how they translate into the laminate are concerns of the composite design engineer. Maximum directional properties for the minimum material (thickness) are attained with unidirectional-style material. The more usual goal...
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
... Abstract The properties 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...
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
... 60–140 However, the previous numbers are for the fiber and the resin individually. When the fiber and resin are combined into either a unidirectional or woven fabric composite ply, the stiffness values will change drastically. Micromechanics will provide a calculated value, but material...
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...
Image
Published: 01 January 1997
Fig. 17 Comparison of the fatigue strength (tension-tension loading) of an aluminum alloy and several unidirectional resin-matrix composite materials. Source: Ref 17 More
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
... for Unidirectional Composites , J. Compos. Mater. , Vol 23 , April 1989 , p 370 10.1177/002199838902300405 3. Springer G.S. and Tsai S.W. , Thermal Conductivities of Unidirectional Materials , J. Compos. Mater. , Vol 1 , 1967 , p 166 10.1177/002199836700100206 4. Mortensen...
Image
Published: 01 December 2004
Fig. 5 Micrograph of a composite part made with two unidirectional carbon fiber prepreg materials having different thicknesses (areal weights) and fiber types. Slightly uncrossed polarized light, 10× objective More
Image
Published: 01 December 2004
Fig. 6 Cross section of a composite part made with glass fabric prepreg and two unidirectional carbon fiber prepreg materials having different thicknesses (areal weights) and fiber types. Slightly uncrossed polarized light, 10× objective More
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003444
EISBN: 978-1-62708-195-5
... standard elements used to characterize composite materials for the various failure modes. Simple structural-element testing under in-plane unidirectional, multidirectional, and combined loading, as well as out-of-plane loading are discussed. Simple bolted and bonded joints, as well as data correlation...
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
... types. Range shows the effect of lay-up. UD, unidirectional; HS, high strength; IM, intermediate modulus; HM, high modulus Design Guidelines Materials and process selection for lightweight composite materials is primarily driven by how much an industry will pay for weight reduction...