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discontinuous-fiber composites

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Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001116
EISBN: 978-1-62708-214-3
... in sample 1. Figure 4 shows a portion of that cross section. The pipe fractured in the upturned fibers adjacent to the ERW bond line. A secondary crack was also visible and is shown in greater detail in Fig. 5 and 6 . Although shaped like a hook crack, the secondary crack was jagged and discontinuous...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003507
EISBN: 978-1-62708-180-1
... and fibering Burnished surface and controlled surface quality However, the beneficial factors of deformation processing can become a potential problem if the process is not carefully understood. Potential problems of the deformation process also include: Fracture-related problems: for example...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006758
EISBN: 978-1-62708-295-2
... pinpoint an area of interest on a large structure such as a pressure vessel or a mechanically loaded component. The UT signal response can also be used to determine the possible physical root cause of the sound, such as fiber breakage, buckling or loose or broken components of a structure...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c9001527
EISBN: 978-1-62708-224-2
... better abrasion resistance. Independent wire rope cores (IWRC) provide better crushing resistance than fiber cores. Because of the complex geometry of the assembled wires, the ultimate tensile strength is not equivalent to a large wire of equal cross-sectional area. A certain percentage of the load...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006835
EISBN: 978-1-62708-329-4
... and improved mechanical properties by: Improved internal quality due to compressive deformation Grain refinement and beneficial grain-flow patterns Elimination of casting porosity and breakup of macrosegregation patterns Improved toughness and/or fatigue resistance due to grain flow and fibering...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c9001451
EISBN: 978-1-62708-224-2
...Abstract Abstract During the lifting of a piece of machinery by means of an overhead travelling crane the hook fractured suddenly. The load was attached to the hook by means of fiber rope slings and rupture occurred in a plane which appeared to coincide with the sling loop nearest to the back...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006764
EISBN: 978-1-62708-295-2
... of anomalies. Equipment for remote visual examination includes telescopes, borescopes, and fiber-optics cameras. Visual examination of translucent materials uses artificial lighting that can be contained in an illuminator to produce directional lighting. The illuminator provides light of an intensity...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006776
EISBN: 978-1-62708-295-2
... polymers, such as polycarbonate and polymethyl methacrylate, can exhibit either true striations or discontinuous growth bands, depending on load levels and loading history. A brief discussion of the fractography of fiber-reinforced, polymer-matrix structural composites is provided in Ref 33...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003541
EISBN: 978-1-62708-180-1
... as a fiber, plastic, or elastomer ( Fig. 1 ), depending on the relative strength of intermolecular bonds and molecular structure or geometry. Noncrystalline polymers with weak intermolecular forces are usually elastomers or rubbers at temperatures above the glass transition temperature, T g . In contrast...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001808
EISBN: 978-1-62708-180-1
... rather than a jagged or deformed shape. The residue on the filter cartridge was brown, and when viewed under a low-power microscope, particles of sand, paint, or plastic, fibers from the cartridge, brass, and steel could be identified. Application of a magnet to the sample showed that it contained...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006810
EISBN: 978-1-62708-329-4
... in <xref rid="a0006810-f40" ref-type="fig">Fig. 40</xref> Table 2 Chemical analyses of steel shaft and stainless-steel end cap in Fig. 40 Element Chemical analysis of steels in shaft assembly Nominal composition of type 316 stainless steel (a) ASTM A105, grade 2, steel shaft Type 316 stainless steel end cap...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003543
EISBN: 978-1-62708-180-1
... installation torque. Investigation Typical failed fasteners are shown in Fig. 2(a) . Substantial necking accompanied all of the fractures. The fractographic features were consistent with dimple rupture, and the macroscopic necking is shown metallographically in Fig. 2(b) . The chemical composition...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003537
EISBN: 978-1-62708-180-1
... alloys Crack branching and irregularity maintained to higher Δ K Increased resistance to region II fatigue crack growth Fibering in aluminium alloys Alignment of grains and particles Branching and irregularity much less when crack plane normal to short transverse direction Lower K Ic...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006778
EISBN: 978-1-62708-295-2
... at the normal installation torque. Investigation Typical failed fasteners are shown in Fig. 2(a) . All fractures showed substantial necking. Fractographic features were consistent with dimple rupture, and macroscopic necking is shown metallographically in Fig. 2(b) . The chemical composition...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003524
EISBN: 978-1-62708-180-1
...: magnetic-particle inspection of ferrous metals, liquid-penetrant inspection, ultrasonic inspection, and sometimes eddy-current inspection. All these tests are used to detect surface cracks and discontinuities. Radiography is used mainly for internal examination. A photographic record of the results...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003544
EISBN: 978-1-62708-180-1
... the effects of load frequency and temperature, material condition, and manufacturing practices on fatigue strength. It provides information on subsurface discontinuities, including gas porosity, inclusions, and internal bursts as well as on corrosion fatigue testing to measure rates of fatigue-crack...
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
... and composition Rolling-contact fatigue appears similar to wear in early stages Multiple intergranular fissures covered with reaction scale Grain faces may show porosity Metallographic inspection, 50 to 1000× (cross section) Grain distortion and flow near fracture Irregular...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.marine.c9001617
EISBN: 978-1-62708-227-3
...' opinion, is much better for examining fracture surfaces than is fiber-optic lighting. Fracture surfaces of outboard couplings, where cracks had been exposed to seawater, usually were uniformly corroded, but, in one case, bands of corrosion product with different colors were observed ( Fig. 7...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006838
EISBN: 978-1-62708-329-4
... 3D component. The advantages of this system include its ability to produce high-resolution features, internal passages, and maintain dimensional control. Lasers are typically ~100 W neodymium-doped yttrium-aluminum-garnet (Nd:YAG) lasers for polymer PBF. For metals, fiber lasers provide improved...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001811
EISBN: 978-1-62708-180-1
... that failed in tension because of overloading. Excessive wear on a 16-mm ( 5 8 -in.) diam 6 × 37 (6 strands of 37 wires each) fiber-core improved plow steel wire rope is described in Example 3 in this article. Corrosion failures are also relatively frequent because of the environments in which...