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two-directional fabrics

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870489
EISBN: 978-1-62708-314-0
... (strain-to-failure less than two percent) and exhibits low impact resistance. Being conductive, it causes galvanic corrosion if placed in direct contact with more anodic metals (such as aluminum). Carbon and graphite fibers are available in a wide range of strength and stiffness, with strengths of 300...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870001
EISBN: 978-1-62708-314-0
... in the two- or 90-degree direction, the modulus E 22 is much lower, approaching that of the relatively less stiff matrix. Since E 11 >> E 22 and the modulus varies with direction within the material, the material is anisotropic. Composites are a subclass of anisotropic materials...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550569
EISBN: 978-1-62708-307-2
... 215 31.2 … … 140 20.3 … … 502 72.8 … … 145 21 … … 30 4.3 3D, three-directional; 2D, two-directional. Source: Ref 11.2 Table 11.5 Thermal properties of selected commercially available continuous fiber ceramic-matrix composites Fiber matrix system Fiber...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870031
EISBN: 978-1-62708-314-0
.... This happens with similar frequency in the fill direction, and the overall result is a fabric having increased thickness, a rougher surface, and more porosity. Woven fabrics often contain tracer yarns. For example, yellow aramid tracers are often woven on two-inch (50 mm) spacings in carbon cloth along...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230163
EISBN: 978-1-62708-298-3
... were excellent, but the unfavorable economics of manufacture led to evaluation of other fabrication methods. Coextrusion has been used to produce two distinct beryllium-titanium composite systems: A continuous filamentary composite with the final appearance closely resembling conventional wire...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550385
EISBN: 978-1-62708-307-2
... and strength and stiffness are less important. Fig. 8.3 Influence of reinforcement type and quantity on composite performance. Source: Ref 8.1 Both the type of reinforcement and the matrix affect processing. The major processing routes for polymer-matrix composites are shown in Fig. 8.4 . Two...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870119
EISBN: 978-1-62708-314-0
...). To circumvent some of the problems of controlling a direct wet winding process, wet-rolled prepreg is sometimes manufactured by wet impregnating the strands in the normal manner and then respooling them prior to winding. There are two main advantages to this process: (1) the fabricator can conduct off-line...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2011
DOI: 10.31399/asm.tb.cfw.t52860065
EISBN: 978-1-62708-338-6
... in their packages. It is in the fiber removal from a package that twisting can occur ( Fig. 6.6 ). Fibers from inside the nonrotating package have a twist each time a diameter length of fiber is taken in a 90° direction. This creates a twist every foot or two of each fiber in the winding. Twists are also generated...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630257
EISBN: 978-1-62708-270-9
... III (tearing mode): shear stress in the z direction, or parallel to the crack tip. In practice, a two-dimensional state of stress is assumed in a bulk material when one of the dimensions of the body is small relative to the others. A two-dimensional state of stress called plane strain...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870573
EISBN: 978-1-62708-314-0
... of up to two orders of magnitude greater than those of nonoxide fibers. Nonoxide fibers, such as carbon and silicon carbide, have lower densities, much better high-temperature strength, and creep retention than oxide fibers, but they have oxidation problems at high temperatures. Ceramic oxide fibers...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290111
EISBN: 978-1-62708-319-5
... these approaches, because larger production levels, such as current developments in binder jet machines, show the promise of being able to fabricate greater than 100,000 parts annually for the automotive industry. Process selection must consider the component shape. Two-dimensional shapes, such as tubes, have...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610377
EISBN: 978-1-62708-303-4
..., damage tolerance, and testing and certification. composite laminates continuous carbon-fiber composites continuous-fiber polymer-matrix composites damage tolerance fatigue failure mechanisms A COMPOSITE MATERIAL can be defined as a combination of two or more materials that results...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2011
DOI: 10.31399/asm.tb.cfw.9781627083386
EISBN: 978-1-62708-338-6
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230295
EISBN: 978-1-62708-298-3
.... The microstructure, properties, and various methods used that are related to the deposition of beryllium are discussed in Chapter 22, “Beryllium Coating Processes,” in this book. Fig. 20.1 Schematic illustration of two beryllium consolidation processes. Hot isostatic pressing is shown by the two schematics...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120025
EISBN: 978-1-62708-269-3
... melting. Triple melting achieves even better uniformity of chemistry and structure. Triple melting also reduces oxygen-rich or nitrogen-rich inclusions in the microstructure to a very low level by providing an additional melting operation to dissolve them. In the two-stage process, titanium sponge...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870255
EISBN: 978-1-62708-314-0
... to a class of materials that are two-phase gas-solid systems in which the polymer is continuous and the gaseous cells are dispersed throughout the solid. Polymeric foams can be produced by several methods, including extrusion, compression molding, injection molding, reaction injection molding, and other...
Series: ASM Technical Books
Publisher: ASM International
Published: 23 January 2020
DOI: 10.31399/asm.tb.stemsem.9781627082921
EISBN: 978-1-62708-292-1
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870285
EISBN: 978-1-62708-314-0
... is the preform. This is a mat of chopped glass fiber strands with a binder that allows the preform to hold its shape. The preform is made to the approximate shape of the product to be molded. There are two common methods of producing preforms, the directed-fiber method and the plenum-chamber method...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240607
EISBN: 978-1-62708-251-8
... Whisker-reinforced MMCs may experience some whisker alignment during extrusion or rolling. Control of whisker alignment enables production of MMC product forms with directional properties needed for some applications. Cross rolling of sheet establishes a more planar whisker alignment, producing a two...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230267
EISBN: 978-1-62708-298-3
... during the powder-processing operation, with a resultant BeO content ranging from 1 to 2 wt%. Continuous sampling of the powder material and the determination of chemical and screen analyses are employed to permit blending of powders for a uniform product. Typical analyses of two commercial types of −200...