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thermoplastic-matrix composite failures

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Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003031
EISBN: 978-1-62708-200-6
... because the failure of even several fibers results in the redistribution of load onto other fibers rather than a catastrophic failure of the part. Glass-fiber-reinforced organic-matrix composites are the most familiar and widely used, and have had extensive application in industrial, consumer, military...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006780
EISBN: 978-1-62708-295-2
... and are also referred to as triple-point or grain-corner cracks in the literature. Wedge-type cracks form at triple points due to grain-boundary sliding and can be promoted by decohesion at interfaces between grain-boundary precipitates and the matrix. High stresses and lower temperatures promote...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003035
EISBN: 978-1-62708-200-6
... Abstract Sheet molding compound (SMC) is a composite material - consisting of glass-fiber-reinforced polyester in a resin matrix - that’s available in sheet form for the production of compression-molded parts. This article discusses the components incorporated into the resin paste, including...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.9781627081955
EISBN: 978-1-62708-195-5
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003064
EISBN: 978-1-62708-200-6
... strengths and moduli as those achieved with resin matrix composites. Moreover, because their properties are maintained to 2000 °C (3650 °F), they represent the premier material for inert atmosphere or short-time high-temperature applications. Table 7 shows typical mechanical properties of unidirectional...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003046
EISBN: 978-1-62708-200-6
... Materials Handbook, ASM International, 1990, p 821–828 M.M. Schwartz, Joining of Composite Matrix Materials, ASM International, 1994, p 69–77 The five repair joint concepts shown in Fig. 2 were developed for generic laminate repair. Each of these will be discussed in detail. Fig. 2 Repair...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006478
EISBN: 978-1-62708-190-0
... Abstract This article introduces the principal methodologies and some advanced technologies that are being applied for nondestructive evaluation (NDE) of fiber-reinforced polymer-matrix composites. These include acoustic emission, ultrasonic, eddy-current, computed tomography, electromagnetic...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003043
EISBN: 978-1-62708-200-6
... Abstract The structural efficiency of a composite structure is established by its joints and assembly. Adhesive bonding, mechanical fastening, and fusion bonding are three types of joining methods for polymer-matrix composites. This article provides information on surface treatment and the...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003042
EISBN: 978-1-62708-200-6
... related and totally independent of the material matrix. Therefore, the cutting tools, feed rates, and rotational speeds to be discussed are applicable to thermoplastic, bismaleimide, polyimide, and epoxy matrices, as well as to hybrids of composites and metals. Focused laser beams are used to...
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005676
EISBN: 978-1-62708-198-6
.... Fig. 4 Transmission electron microscopy image of an acrylonitrile-butadiene-styrene polymer. The dark phase is comprised of butadiene rubber particles, which are dispersed in a styrene-acrylonitrile matrix. Source: Ref 2 Physical properties of polymers are the result of their long chain...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006757
EISBN: 978-1-62708-295-2
... failure, the full range of analytical methods may be required. For example, it is sometimes difficult to distinguish between SCC and liquid metal embritttlement (LME). Additional analytical methods may be required to determine the chemistry within the cracks and in the adjacent matrix material. Figure 44...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006774
EISBN: 978-1-62708-295-2
.... Additionally, in polycrystalline polyphase metallic materials, fracture may occur at or adjacent to grain boundaries, and cleavage fracture may occur in large second phases present in the microstructure, which then provide crack nuclei for ductile crack propagation in the matrix. Cleavage fracture at a...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006063
EISBN: 978-1-62708-172-6
... −1 obscure the region of the spectrum that exhibits differentiation of acrylic and PVA resins. Separation of this extender from the coating matrix is thus necessary for accurate identification of the resin. Fig. 12 Fourier transform infrared spectrum of polyvinyl acetate coating. Courtesy of...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006775
EISBN: 978-1-62708-295-2
... discussed in the article “Fracture Appearance and Mechanisms of Deformation and Fracture” in this Volume. In a smooth cylindrical tensile specimen, failure most commonly initiates by inclusion-matrix interface debonding near the centerline. This results in a central fibrous region, which is normal to the...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003005
EISBN: 978-1-62708-200-6
... materials, including ferrous alloys, nonferrous alloys, ceramics, cermets and cemented carbides, engineering plastics, polymer-matrix composites, metal-matrix composites, ceramic-matrix and carbon-carbon composites, and reviews their general property characteristics and applications. It describes the...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003023
EISBN: 978-1-62708-200-6
... cooling because of the absence of crystallization. Besides the possibly large volume effects due to recrystallization, mold shrinkage becomes proportional to the thermal expansivity of a polymer. The addition of fillers to the polymer matrix, particularly those with effective wetting characteristics...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003038
EISBN: 978-1-62708-200-6
... edges and delamination. A suitable alternative is still being sought for these composites. A composite is, by definition, a combination of reinforcing fibers surrounded by a stress-transferring medium or matrix that allows the development of the full properties of the reinforcing fibers. The level of...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003033
EISBN: 978-1-62708-200-6
... Abstract This article addresses the types, properties, forms, and applications of fibers that are available for use in fiber-reinforced polymeric matrix composites, including glass, graphite, carbon, aramid, boron, silicon carbide, ceramic, continuous oxide and discontinuous oxide fibers. It...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003052
EISBN: 978-1-62708-200-6
... bertrandite ores High thermal conductivity High electrical resistivity Substrates (heatsinks) in electronics SiC Acheson process: SiO 2 + C → SiC + CO Pyrolysis of polycarbosilanes Extreme hardness Resistance to thermal shock Wear parts As a fiber whisker or particle in metal-matrix composites and...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003008
EISBN: 978-1-62708-200-6
... produce higher-performance engineering plastics. A composite is defined here as a material containing a resin matrix and a reinforcing agent, such as fiber. Heat and ultraviolet stabilizers, flame retardants, and other ingredients can be compounded into the resins to improve certain properties...