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fiber forms

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Published: 01 March 2006
Fig. 12.51 Various forms of fiber-reinforced composites. (a) Continuous fiber. (b) Woven fiber. (c) Chopped fiber. (d) Hybrid. Source: Ref 12.18 More
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Published: 01 November 2010
Fig. 2.6 Typical glass fiber product forms More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.tt2.t51060183
EISBN: 978-1-62708-355-3
..., strands, rovings, and tows by the tensile loading to failure of the resin-impregnated fiber forms. This technique loses accuracy as the filament count increases. Strain and Young’s modulus are measured by an extensometer. The purpose of using impregnating resin is to provide the fiber forms, when...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550385
EISBN: 978-1-62708-307-2
... the fibers in the proper orientation and spacing. It protects them from abrasion and the environment. In polymer- and metal-matrix composites that form a strong bond between the fiber and the matrix, the matrix transmits loads from the matrix to the fibers through shear loading at the interface. In ceramic...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870031
EISBN: 978-1-62708-314-0
... Abstract This chapter discusses the properties and processing characteristics of glass, aramid, carbon, and ultra-high molecular weight polyethylene fibers and related product forms, including woven fabrics, prepreg, and reinforced mats. It also includes a review of fiber terminology as well...
Image
Published: 01 October 2012
Fig. 11.22 Unidirectional alumina-fiber/glass-matrix composite formed by slurry infiltration followed by hot pressing. (a) Light micrograph of transverse section (some porosity can be seen in this micrograph). (b) Pressure and temperature schedule used during hot pressing of this composite More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870489
EISBN: 978-1-62708-314-0
... in composite structures, some of which are illustrated in Fig. 18.1 . The fibers can be continuous or discontinuous. They can be oriented or disoriented (random). They can be furnished as dry fibers or preimpregnated with resin (prepreg). Fig. 18.1 Product forms used in composites Not all fiber...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2011
DOI: 10.31399/asm.tb.cfw.t52860151
EISBN: 978-1-62708-338-6
..., such as small-diameter fiber that is flexible and of rayon, polyacrylonitrile (PAN), and pitch, in great or indefinite length. an inert environment. The term is often used interchangeably with the term graphite; how- continuous filament yarn. Yarn formed by ever, carbon fibers and graphite fibers differ...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870373
EISBN: 978-1-62708-314-0
... discussed in Chapter 15, “Environmental Degradation.” 14.1 Glass Fiber Composites Due to their low material costs compared to aramid and carbon fibers, glass fiber composites are the most widely used composite material. They are available in the widest variety of product forms, ranging from short...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780185
EISBN: 978-1-62708-281-5
... PF, macerated fabric filler 25–65 (4–9) 0.4–0.6 6–9 (0.87–1) 100–160 (15–24) 60–100 (9–15) 95–120 HRM PF, cast, no filler 40–65 (6–9) 1.5–2.0 3 (0.43) 85–115(12–17) 75–115 (11–17) 93–120 HRM Polyester, glass-fiber filler 35–65 (5–9) … 11–14 (1.6–2.0) 140–175 (20–25) 95–115 (14...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550001
EISBN: 978-1-62708-307-2
... (660 °F) under no or very low load levels. Others, usually in a fiber form, have strengths that are greater than that of steel. The properties of both commodity and engineering plastics are often improved with the addition of high-strength fibers—both continuous and discontinuous—to form composites...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550457
EISBN: 978-1-62708-307-2
... and stiffness, among other properties, in preferred directions and locations. This chapter discusses the processes and procedures used in the production of fiber-reinforced aluminum and titanium metal-matrix composites. It explains how the length and orientation of reinforcing fibers affect the properties...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870537
EISBN: 978-1-62708-314-0
... weight percent) can either be fugitive ones that are burned off during casting or high-temperature silica or Al 2 O 3 compounds that require firing before casting. Fig. 20.11 Saffil alumina fiber preform 20.5.1 Squeeze Casting Squeeze casting is a metal-forming process in which...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780404
EISBN: 978-1-62708-281-5
... depend to some extent on the molecular weight of the polymer. Because the fibrils are load-bearing, the microcrack usually does not open substantially before parallel microcracks form. Fiber-forming plastics such as nylon, polyethylene (PE), and polypropylene (PP) readily stress craze, but crazing...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780064
EISBN: 978-1-62708-281-5
...-wound article will exhibit a strong fiber pattern. Plastics processing is a form conversion process. The material that enters the process as plastic pellets or powder is basically the same material that exits the process as a plastic part. The plastic process converts the shape of the plastic...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2011
DOI: 10.31399/asm.tb.cfw.t52860065
EISBN: 978-1-62708-338-6
... Introduction The hardware requirements for filament winding are described and illustrated in this text. Elementary processing equipment and advanced techniques are included. A machine with programmed motions places a resin-impregnated band of fibers onto a form or tool called the mandrel. Possible fiber...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870183
EISBN: 978-1-62708-314-0
... the fiber bed. It should be noted that the properties of solvent-impregnated prepreg, powder-coated, comingled, and film-stacked laminates are not as good as those made from hot melt–impregnated prepreg due to the superior fiber-to-matrix bond formed during the hot melt impregnation process. Several...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870573
EISBN: 978-1-62708-314-0
... to 20.3 μm), allowing them to be used for a wide range of manufacturing options, such as filament winding, weaving, and braiding. A useful measure of the ability of a fiber to be formed into complex part shapes is the critical bend radius ρ cr , which is the smallest radius that the fibers can be bent...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550569
EISBN: 978-1-62708-307-2
... fibers as a possible reinforcement material. In addition to high-temperature deformation, environmental susceptibility is a problem for many of the nonoxide-matrix and reinforcement materials used in continuous fiber CMCs. Both SiC and Si 3 N 4 form a SiO 2 surface layer upon exposure...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.t53030159
EISBN: 978-1-62708-349-2
... caused microcracks to form ( Ref 12 ). Residual stresses are caused by the anisotropic expansion coefficients of the adjacent plies and material constituents (resin/fiber) as well as the cure shrinkage of the matrix. It is commonly observed that modifications to the cure cycle, by changing the ramp rate...