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stress concentration

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0048150
EISBN: 978-1-62708-235-8
... calculations to be very close to the maximum allowable fluctuating stress for the material. The wiper springs were concluded to be fractured in fatigue and the cyclic loading resulted from cam rotation. The maximum applied stress approached the allowable limit due to high stress-concentration factor...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c0047234
EISBN: 978-1-62708-233-4
... this fracture-initiation area showed fatigue striations. No casting or metallurgical structural defects were found that could explain the failures. This evidence supports the conclusion that cracking was a result of the stress-concentration site at the bolt holes where a fatigue-initiated fracture occurred...
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Published: 01 January 2002
Fig. 17 Stress concentration at eyebolt. k t , stress concentration factor; σ a , nominal (average) stress More
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Published: 01 January 2002
Fig. 33 Effect of stress raisers on stress concentration and distribution of stress at several changes of form in components. (a) to (c) Progressive increases in stress with decreasing fillet radii. (d) to (f) Relative magnitude and distribution of stress resulting from uniform loading. (g More
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Published: 01 June 2019
Fig. 14 Stress concentration at the bucket tip shroud due to presence of equiaxial and columnar grains More
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Published: 01 June 2019
Fig. 2 Stress concentration factor obtained in bending a quenched and tempered steel shaft having a circular fillet More
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Published: 01 June 2019
Fig. 1 Finite-element model showing maximum stress concentration in cloverleaf radius. The highest stress concentration is in the small black area surrounded by white. More
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Published: 01 June 2019
Fig. 3 Various methods of reducing stress concentration at shoulder required for locating bearing races, etc. More
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Published: 30 August 2021
Fig. 20 Effect of size of fillet radius on stress concentration at a change in shaft diameter. See text for discussion More
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Published: 30 August 2021
Fig. 21 Graph of stress-concentration effects of different fillet radii on the stress-intensity factor, K More
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Published: 15 January 2021
Fig. 30 Finite-element model showing maximum stress concentration in cloverleaf radius. The highest stress concentration is in the small black area surrounded by white. More
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Published: 01 January 2002
Fig. 12 Examples of stress concentrations in welded joints More
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Published: 01 December 1993
Fig. 8 Methods of tube joining. (a) Fishmouthing. (b) Reduction of stress concentration using fillets More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.machtools.c0047779
EISBN: 978-1-62708-223-5
... concentration. To minimize this stress concentration, a larger radius fillet shaft at the critical change in section was suggested as corrective measure. Inclusions Stress concentration A6 UNS T30106 Fatigue fracture The shaft shown in Fig. 1 was part of a clamping device on a tooling assembly...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0089738
EISBN: 978-1-62708-235-8
... that the crack in the header tube was the result of a stress concentration at the toe of the weld joining a doubler collar to the tube. The stress concentration was caused by undercutting from poor welding technique and an unfavorable joint design that did not permit a good fit-up. Recommendations included...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001793
EISBN: 978-1-62708-241-9
..., and chemical analyses revealed that the concentric pipe failed due to fatigue. Fatigue cracks initiated along longitudinal welds where wire spacers attach to the external surface of the pipe. The effect of crack-like defects, stress concentration at the weld toe, residual tensile stress, and lack...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001542
EISBN: 978-1-62708-217-4
... Abstract A nose landing gear cylinder made from AISI 4340 Ni-Cr-Mo alloy steel was found cracked and leaking, causing partial depressurization. Investigation revealed the crack to be a stress-corrosion type, judging by the 6500x electron fractograph. It had started in a region of concentrated...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c0089633
EISBN: 978-1-62708-220-4
... 100x magnification) supported the conclusion that the crack initiated at the inner edge of a lubrication hole and had propagated toward both the threaded and flange ends of the casting. An appreciable residual-stress concentration must have been present and caused propagation of the crack. The residual...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003528
EISBN: 978-1-62708-180-1
... with a section on the XRD stress measurements in multiphase materials and composites and in locations of stress concentration. calibration composites corrosion fatigue failure analysis heat treatment residual stresses sample selection specimen preparation stress concentration stress-corrosion...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0089774
EISBN: 978-1-62708-235-8
... (visual inspection, 0.4x magnification, and stress analysis) supported the conclusion that a likely cause for the fatigue failure was the combination of residual stresses generated in welding and centrifugal service stresses from operation that were accentuated by areas of stress concentration...