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counterboring

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Published: 01 June 2019
Fig. 3 Photomicrograph of specimen showing crack counterbore and weldment (pipe approximately 0.33″ thick) More
Image
Published: 01 June 2019
Fig. 2 The crack (arrow) extended at the exhaust valve seat counterbore where the failure originated ( Fig. 1 ). More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001561
EISBN: 978-1-62708-229-7
... area was in its R-2 stage (two repairs completed). The pipe had also been counterbored prior to installation for ease in pipe fit-up prior to welding. The crack on the outside surface of the pipe was approximately five inches long, ran parallel to the girth weld and was reasoned to be in the weld heat...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0089722
EISBN: 978-1-62708-217-4
... the weld out of the high-stress area. Dimensions given in inches Investigation Visual examination of the elbow assembly revealed a crack in the fillet weld that joined the tube to the shoulder fitting. In assembly, the tube was inserted into a counterbore in the shoulder fitting (original design...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001743
EISBN: 978-1-62708-217-4
... roots. Figs. 1 and 2 illustrate one example of the most common type of cylinder failure. Fig. 1 When opened, crack on cylinder dome surface was found to be progressive and old. Fig. 2 The crack (arrow) extended at the exhaust valve seat counterbore where the failure originated ( Fig...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001327
EISBN: 978-1-62708-215-0
... nuclear power plants. The location of the large, single crack at the counterbore was similar to that observed at other PWRs. This crack and the smaller cracks exhibited crack arrests and a tight oxide film. The nature of the nozzle/reducer area of the steam generator was such that the mean stress...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001301
EISBN: 978-1-62708-215-0
... and were certified as acceptable. The rework included opening the counterbore, sleeving previous gear-to-camshaft bolt holes, and redoing the bolt holes. These two reworked gears were then installed at the rear of the dragline unit in April 1983, and new front gears were installed on November of the same...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003509
EISBN: 978-1-62708-180-1