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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0046874
EISBN: 978-1-62708-229-7
...Abstract Abstract The safety valve on a steam turbogenerator was set to open when the steam pressure reaches 2400 kPa (348 psi). The pressure had not exceeded 1790 kPa (260 psi) when the safety-valve spring shattered into 12 pieces. The steam temperature in the line varied from about 330 to 400...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001318
EISBN: 978-1-62708-215-0
...Abstract Abstract Failure of three C22000 commercial bronze rupture discs was caused by mercury embrittlement. The discs were part of flammable gas cylinder safety devices designed to fail in a ductile mode when cylinders experience higher than design pressures. The subject discs failed...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003566
EISBN: 978-1-62708-180-1
... to the crown radius minus the corner radius. (6) Draw arc SP with a radius r from point O, the intersection of line EE′ and arc BB′. The resultant arc is tangent to arc AA′ and line AC at points S and P, respectively. Abstract Abstract This article briefly reviews the analysis methods for spalling...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001810
EISBN: 978-1-62708-241-9
... analysis usually requires a number of fatigue strength factors to be taken into consideration such, as surface conditions, size, and stress concentration. When these factors are taken into consideration, the safety factor will be decreased. Thus, the fractures were observed on bar surface. The author...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.homegoods.c0090457
EISBN: 978-1-62708-222-8
...Abstract Abstract Components of a latch assembly used in a consumer safety restraint exhibited a relatively high failure rate. The failures were occurring after installation but prior to actual field use when failure could result in severe injury. Cracking occurred within retaining tabs used...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c9001139
EISBN: 978-1-62708-221-1
..., vibration analysis, etc., Conduct appropriate tests, Conduct a safety analysis, including reasonably foreseeable use and misuse of equipment, Be aware of and take full account of applicable codes and standards, Prepare users and maintenance manuals carefully, and in detail, and Warn against...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.rail.c9001138
EISBN: 978-1-62708-231-0
... a thorough design analysis, stress analysis, fatigue and fracture analysis, vibration analysis, etc., Conduct appropriate tests, Conduct a safety analysis, including reasonably foreseeable use and misuse of equipment, Be aware of and take full account of applicable codes and standards, Prepare...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003502
EISBN: 978-1-62708-180-1
... – 145 15. Kardos G. , Risk and Hazard Analysis in Design , Materials Selection and Design , Vol 20 , ASM Handbook , ASM International , 1997 , p 117 – 125 16. Willis T. , Kaplan M.P. , and Kane M.B. , Safety in Design: an American Experience, C377/110 , Proc...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003503
EISBN: 978-1-62708-180-1
... , 7 , 8 ). MIL-STD 1629 (ships), “Procedures For Performing a Failure Mode Effects and Criticality Analysis” ( Ref 9 ) was published in 1974, and, through several revisions, became the basic approach for analyzing a system. Initially, FMEAs were used primarily as a safety analysis on the system...
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
... occurring by assuring that stresses in service do not reach a critical level. Uncertainty and unknowns in analysis, manufacture, service, and material conditions are typically addressed by applying so-called “factors of safety.” Analysis of Applied Stresses Stress analysis provides a road map...
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
..., manufacture, service, and material conditions are typically addressed by applying so-called “factors of safety.” Analysis of Applied Stresses Stress analysis provides a road map for the failure analyst. If fracture initiates in a low stress area, several working hypotheses are suggested. The part may...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003514
EISBN: 978-1-62708-180-1
... to Probabilistic Analysis Historical Background The modern era of probabilistic structural design and analysis started after World War II. In 1947, a paper titled “Safety of Structures” by A.M. Freudenthal appeared in the Transactions of the American Society of Civil Engineers ( Ref 1 ). This historical...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001278
EISBN: 978-1-62708-215-0
...; and to not apply excessive stress on ophthalmic lenses in the form of working or residual stresses. Acetone environment Cracking, environmental effects Crazing Mechanical properties Plastic Safety glasses Swelling Polycarbonate Environmental cracking (plastics) Background Testing Procedure...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001001
EISBN: 978-1-62708-229-7
...Abstract Abstract Examination of the header of the third superheater of a boiler producing 150 t/h of steam at 525 deg C and 118 kPa, disclosed extensive internal cracking at the connection to the tube joining this to a safety valve. Cracking was observed within the tube and in the thickness...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003505
EISBN: 978-1-62708-180-1
...); fault-tree analysis (FTA); fault hazard analysis (FHA); operating hazard analysis (OHA); use of codes, standards, and various regulatory acts; and the Occupational Safety and Health Act (OSHA). These are discussed in the article “Safety in Design” in Materials Selection and Design , Volume 20 of ASM...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001271
EISBN: 978-1-62708-215-0
... • Vander Voort G.F. , Failures of Tools and Dies , Failure Analysis and Prevention , Vol 11 , ASM Handbook , ASM International , 1986 , p 563 – 585 10.31399/asm.hb.v11.a0001814 • Becker W.T. and McGarry D. , Mechanisms and Appearances of Ductile and Brittle Fracture...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001010
EISBN: 978-1-62708-229-7
... of failure, with 99 shutdowns. Widespread cracking on the inside was apparent, the most severe cracking being some distance from the nozzle connection in a downstream direction. Widespread cracking and pitting were observed also at the connections to the safety valve and soot blower. Pitting was most...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c9001668
EISBN: 978-1-62708-232-7
.... A stress analysis was conducted on the autoclave and it was found that it was approaching its yield point at the condition when the bolts would normally fail from an internal build-up of pressure. This is a desirable condition since the bolts then act as a safety device in protecting the autoclave...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006753
EISBN: 978-1-62708-295-2
... what expectations existed among various parties is often part of the analysis. Product safety continues to improve, but expectations are also heightened. Failure Definitions In the general sense of the word, a failure is defined as an undesirable event or condition. For purposes of discussion...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.homegoods.c0092122
EISBN: 978-1-62708-222-8
... (21 ft) with a recommended maximum angle of inclination of 75 deg (15 deg from vertical). Investigation (visual inspection, hardness testing, metallographic examination, stress analysis, and tensile tests) supported the conclusion that the side rails of the ladders buckled when subjected to loads...