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cracks in the body and end cap

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Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001806
EISBN: 978-1-62708-241-9
...Abstract Abstract Coaxial cable connectors made of brass were failing at a high rate after less than one year of service in an outdoor industrial environonment. The observed failures, which consisted of cracks in the body and end cap, were analyzed and found to be brittle fractures due...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c9001721
EISBN: 978-1-62708-225-9
... produced by the bonnet gasket and at the fillet where the screw cap meets the threaded stud. The crack morphology as indicated in Figures 5 , 6 , 7 had a sharp and branched crack tip and appeared to propagate in an intergranular manner. This intergranular type of fracture was confirmed by scanning...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006837
EISBN: 978-1-62708-329-4
... marks is observable around the circumference of the fracture surface. The ratchet marks indicate the combination of crack planes Fig. 30 Fractured axle journal within bearing. The end cap was removed from the failed side. A noticeable amount of red rust was present on the interior of the end...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001669
EISBN: 978-1-62708-229-7
... the longitudinl weld seam both in the failed course and in courses that showed no visible distress for detailed metallographic examination. Boat specimens also were removed from the header body for post-exposure creep-rupture testing. On-Site Examination The general appearance of the cracking visible...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c9001578
EISBN: 978-1-62708-233-4
...: Machine Tool Vibration Case #9: Extremely High Levels of Vibration on the End Cap of a Large Pipe Case #10: Vibration Noise Affecting Dolphins Case #11: High Vibration on Plate Glass Window Case #12: Vibration on Piping Connected to an Engine Driven Reciprocating Compressor Case #13: Paper...
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
...(c) shows the typical pattern on the surface of a fracture through a small-radius fillet. The reason for the fatigue-pattern changes is that the fatigue crack propagates faster in more severe stress concentrations at each end than in the interior. Under the above loading conditions, each crack...
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
... 314 45.5 167 24 152 22 27 1.1 221 32 123 18 (a) 123 18 294 43 123 18 147 21 50 2.0 201 29 103 15 108 16 294 43 103 15 123 18 (a) 20 mm (0.8 in.) diameter specimen Chemical analyses of steel shaft and stainless-steel end cap...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.9781627083294
EISBN: 978-1-62708-329-4
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003573
EISBN: 978-1-62708-180-1
... -20 hardened bolt through a small flange at the other end. For some unknown reason, the special slotted hexagonal-head bolt was replaced by a standard commercial hexagonal-head cap screw whose hardness was 93 HRB instead of the specified hardness of 28 HRC. The commercial cap screw was distorted...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006797
EISBN: 978-1-62708-295-2
... to a heavy portable device by means of a ring clamp at one end of the handle and a special ┬╝-20 hardened bolt through a small flange at the other end. For some unknown reason, the special slotted hexagonal-head bolt was replaced by a standard commercial hexagonal-head cap screw whose hardness was 93 HRB...
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
... continues across the grain boundary, but during the cracking process it is very unlikely that the crossing is strictly continuous across the grain boundary. Cleavage cracks cannot cross a grain boundary if the body has a twist component. The crack must reinitiate, and therefore, the classic fine-scale...
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
... the cracking process it is very unlikely that the crossing is strictly continuous across the grain boundary. Cleavage cracks cannot cross a grain boundary if the body has a twist component. The crack must reinitiate, and therefore the the classic fine-scale convergence of multiple river lines develop...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001819
EISBN: 978-1-62708-180-1
...Abstract Abstract This article commences with a description of the prosthetic devices and implants used for internal fixation. It describes the complications related to implants and provides a list of major standards for orthopedic implant materials. The article illustrates the body environment...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001818
EISBN: 978-1-62708-180-1
... a hydrostatic test because it had cracked in the weld. Analysis showed that the cap had a carbon content of 0.56%, whereas a maximum carbon content of 0.30% was specified. The excessive carbon content had resulted in a brittle HAZ. It was found that construction personnel had substituted ASTM A53 type F butt...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001347
EISBN: 978-1-62708-215-0
... and circumferential patterns. The brittle fracture paths are observed to transition to ductile bearing which is particularly evident near the two end caps. Figure 6 provides a close-up of the origin of the failure in Fragment 17 (see also Fig. 5 ). Figure 6 shows the laminations and delamination...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001536
EISBN: 978-1-62708-229-7
... indicated several cracks near the welds joining the wedge and elbow to each other and to the adjacent piping. The portion of the injection line that included the suspect elbow, wedge and short lengths of adjacent piping on either end was removed from the reactor and sent to ANL for analysis. After...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003530
EISBN: 978-1-62708-180-1
...Abstract Abstract This article describes the underlying fundamentals, applications, the relevance and necessity of performing proper stress analysis in conducting a failure analysis. It presents an introduction to the stress analysis of bodies containing crack-like imperfections and the topic...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006767
EISBN: 978-1-62708-295-2
... introduces the stress analysis of bodies containing cracklike imperfections and the topic of fracture mechanics. The fracture mechanics approach is based on the analysis of the crack tip stress and strain field. The initial approach proposed by George Irwin, the father of fracture mechanics, used the stress...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003548
EISBN: 978-1-62708-180-1
... was recovered. Examination There was a large flat fracture with beach mark features typical of fatigue. The fatigue crack had initiated on the inner surface of the spar at the cavity ( Fig. 6a and Fig. 6b ). Fluid was found within the cavity, and the thermoset seal cap was broken. Microscopic...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006783
EISBN: 978-1-62708-295-2
.... The outboard section that had separated was recovered. Examination There was a large flat fracture with beach mark features typical of fatigue. The fatigue crack had initiated on the inner surface of the spar at the cavity ( Fig. 6 ). Fluid was found within the cavity, and the thermoset seal cap...