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Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002363
EISBN: 978-1-62708-193-1
... Abstract This article describes the test techniques that are available for monitoring crack initiation and crack growth and for obtaining information on fatigue damage in test specimens. These techniques include optical methods, the compliance method, electric potential measurement, and gel...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002358
EISBN: 978-1-62708-193-1
... are addressed, including increased scatter in small-crack data and recommended small-crack test methods. The article highlights the applications where small cracks may be particularly important. crack behavior small fatigue cracks small-crack test method FATIGUE CRACKS are small for a significant...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002357
EISBN: 978-1-62708-193-1
... thresholds, and titanium alloy crack growth thresholds. The near-threshold behavior of nickel-base superalloys is described. The article briefly reviews the threshold results for fiber-reinforced, whisker-reinforced, and particulate-re-inforced metal-matrix alloys. It explains the near-threshold fatigue...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002355
EISBN: 978-1-62708-193-1
... Abstract This article presents an overview of fatigue crack nucleation from the point of view of the material microstructure and its evolution during cycling. It describes the sites of microcrack nucleation at the free surfaces. The article discusses the relation of dislocation structures...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002360
EISBN: 978-1-62708-193-1
... Abstract This article describes the fracture mechanics in fatigue. It discusses the fatigue crack growth rate (FCGR) testing that consists of several steps, beginning with selecting the specimen size, geometry, and crack length measurement technique. The two major aspects of FCGR test analysis...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003317
EISBN: 978-1-62708-176-4
... Abstract Testing and characterization of fatigue crack growth are used extensively to predict the rate at which subcritical cracks grow due to fatigue loading. ASTM standard E 647 is the accepted guideline for fatigue crack growth testing (FCGR) and is applicable to a wide variety of materials...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005419
EISBN: 978-1-62708-196-2
... Abstract Understanding fatigue crack growth is critical for the safe operation of many structural components. This article reviews the standard fracture mechanics and methods to determine the crack growth rate for a material and loading condition experimentally. It also addresses the two most...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002359
EISBN: 978-1-62708-193-1
... Abstract This article summarizes the aspects of crack shape and irregularity that are relevant to fatigue and fracture of surface cracks. It discusses the nature of three-dimensional surface cracks and variables that influence crack shape. These variables include the grain size, residual...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0009217
EISBN: 978-1-62708-176-4
... Abstract Fatigue crack growth rate testing and data analysis are performed to characterize the crack propagation resistance of material environment combinations in order to predict crack growth life under anticipated stress histories. This article presents analyses performed on the numerical...
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Published: 01 January 1987
Fig. 71 Fatigue cracks in an unbroken (a) and completely broken (b) aluminum alloy. (a) Etched with Kroll's reagent. 680× (b) Etched with Keller's reagent. 510× More
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Published: 01 January 2002
Fig. 15 Stress fields and corresponding torsional-fatigue cracks. (a) and (b) Shaft with keyway. (c) Shaft with splines More
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Published: 01 January 2002
Fig. 16 Two views of the plate surface with fatigue cracks at the fifth hole. White arrow in the left-hand figure indicates tool mark from bending that does not interfere with fatigue damage structure. See text for further description. Both 110× More
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Published: 01 January 2002
Fig. 17 Top surface of broken plate of type 316LR stainless steel. Fatigue cracks parallel to the fracture edge and a wide area exhibiting primary fatigue deformation are visible. 65× More
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Published: 01 January 2002
Fig. 27 Fatigue cracks along the web-flange weld and at the end of the connection plate. More
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Published: 01 January 2002
Fig. 26 Fatigue cracks in laboratory test specimens of (a) a steering knuckle made of ferritic ductile iron showing macroscopic features of a fatigue crack initiated at a sharp corner, and (b) a rotating bending fatigue specimen made of as-cast gray iron. Fatigue in this relatively brittle More
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Published: 01 January 2002
Fig. 30 Schematic of the initiation of torsional-fatigue cracks in shaft subjected to longitudinal shear (a) or transverse shear (b). Dashed lines indicate other cracks that can appear when torsional stresses are reversed. More
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Published: 01 January 2002
Fig. 14 Comparison of SCC and corrosion fatigue cracks in copper alloy C26000 (cartridge brass, 70%). (a) Typical intergranular stress-corrosion cracks in tube that was drawn, annealed, and cold reduced 5%. The cracks show some branching. H 4 OH plus H 2 O etch, 150×. (b) Typical transgranular More
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Published: 01 January 2006
Fig. 6 Catalytic converter shell with thermal fatigue cracks in formed exterior surface rib. In cross section at bottom, note numerous outer-diameter surface cracks. 50× More
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Published: 01 January 2003
Fig. 18 Section showing fretting damage and fatigue cracks in Al-6Zn-3Mg alloy. Courtesy of R.B. Waterhouse, University of Nottingham More
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Published: 01 December 1998
Fig. 44 Corrosion-fatigue cracks in carbon-steel boiler tube originated at corrosion pits. Corrosion products are present along the entire length of the cracks. 250× More