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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0048747
EISBN: 978-1-62708-229-7
... contributed to the failure. Recommendations included changing the joint design to incorporate a large-radius corner and improving fitting of the components to permit full weld penetration. Backing strips were suggested to increase weld quality, and the pipe wall thickness was increased from 8 to 9.5 mm...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001522
EISBN: 978-1-62708-235-8
... Abstract In the EMD-2 Joint Directed Attack Munition (JDAM), the A357 aluminum alloy housing had been redesigned and cast via permanent mold casting, but did not meet the design strength requirements of the previous design. Mechanical tests on thick and thin sections of the forward housing...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c9001551
EISBN: 978-1-62708-233-4
... Abstract A multi-million dollar, four-color printing press used to produce a major weekly magazine was breaking pinions (shouldered shafts) on rolls. The cause of fracture was cyclic fatigue. Steel quality and heat treatment met expected standards. The pinion fracture showed multiple origins...
Image
Published: 01 June 2019
Fig. 1 Carbon steel discharge line at a cooling tower that failed because of poor fit-up at Y-joint and poor-quality welds. (a) Original joint design of pipe connection and location of cracks. Photograph is an oblique view of a section through the weldment, showing the abrupt intersection More
Image
Published: 01 January 2002
Fig. 22 Carbon steel discharge line at a cooling tower that failed because of poor fit-up at Y-joint and poor-quality welds. (a) Original joint design of pipe connection and location of cracks. Photograph is an oblique view of a section through the weldment, showing the abrupt intersection More
Image
Published: 30 August 2021
Fig. 12 Carbon steel discharge line at a cooling tower that failed because of poor fit-up at Y-joint and poor-quality welds. (a) Original joint design of pipe connection and location of cracks. Photograph is an oblique view of a section through the weldment showing the abrupt intersection More
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003500
EISBN: 978-1-62708-180-1
... Abstract This article briefly introduces the concepts of failure analysis and root cause analysis (RCA), and the role of failure analysis as a general engineering tool for enhancing product quality and failure prevention. It reviews four fundamental categories of physical root causes, namely...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001017
EISBN: 978-1-62708-219-8
... occurred in absence of the welding problem. In connection with this conclusion, however, it should be noted that this is a commercial product and that it is not subject to the thorough inspection required to guarantee better quality. The pipe does appear to have been adequate for the specified design...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006838
EISBN: 978-1-62708-329-4
... considerations, and quality assurance. The emphasis is on the design and metallurgical aspects for the two main types of metal AM processes: powder-bed fusion (PBF) and directed-energy deposition (DED). The article also describes the processes involved in binder jet sintering, provides information on the design...
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
... the true issues. Without addressing the design process issues, the quality of future products would still have been at risk. The Context of an Engineering Failure Before windowing in on the design process itself, it is helpful to try to visualize how a particular engineering failure fits...
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
... levels, followed by a discussion on the role of failure analysis and the appreciation of quality assurance and user expectations. Systematic analysis of equipment failures reveals physical root causes that fall into one of four fundamental categories: design, manufacturing/installation, service...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0091761
EISBN: 978-1-62708-229-7
... deg F). Additionally, it was suggested that fuel delivery, handling, and treatment be high quality, to maintain fuel contamination within design limits, and inlet air filtration must be designed for the coastal site. Also, changing the bucket tip by increasing its thickness and changing the casting...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001697
EISBN: 978-1-62708-219-8
... Abstract Corrosion in potable and nonpotable water systems has been well documented in the past, and new research discusses innovations in water treatment and materials that are designed to enhance the quality of a water system, whether commercial or residential. This paper is a collection...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001120
EISBN: 978-1-62708-214-3
... a die for die casting of aluminum was submitted for metallurgical analysis. The designated material was premium-quality H13 tool steel. The heat treatment and expected hardness were not specified. The die reportedly fractured after 700 shots in service. The broken segment was submitted to a laboratory...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006828
EISBN: 978-1-62708-329-4
... of the material, joint design, prebraze cleaning, brazing procedures, postbraze cleaning, and quality control. Factors that must be considered include brazeability of the base metals; joint design and fit-up; filler-metal selection; prebraze cleaning; brazing temperature, time, atmosphere, or flux; conditions...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001699
EISBN: 978-1-62708-234-1
... of corrosion monitoring and poor water quality. Pipe replacement and a regular water testing program were recommended. Monitoring Water pipelines Water treatment Steel pipe Uniform corrosion Crevice corrosion Biological corrosion A shopping mall in South Carolina was originally constructed...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001701
EISBN: 978-1-62708-219-8
... by oxygen concentration cells and oxygen-pitting related corrosion. Both types of corrosion are due to the poor quality of the water and the lack of corrosion control in the water system. Water chemistry Water heaters Water pipelines Water treatment ASTM A106 UNS K03006 Crevice corrosion...
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
... of excessive carbide segregation. Plaintiff alleged defective design, defective manufacture, unsuitable or defective material, lack of sufficient quality control, and failure to foresee. The defendant manufacturer believed the twist drill met all specifications for M1 high-speed steel. Both...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001646
EISBN: 978-1-62708-219-8
... Abstract Locked coil wire ropes, by virtue of their unique design and construction, have specialized applications in aerial ropeways, mine hoist installations, suspension bridge cables, and so forth. In such specialty ropes, the outer layer is constructed of Z-profile wires that provide...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001783
EISBN: 978-1-62708-241-9
... on AMPCO 45 versus AMPCO 25 (ANSYS results) AMPCO 45 (old material) AMPCO 25 (suggested) Minimum 851 psi 849 psi Maximum 4.395e + 005 psi 4.395e + 005 psi Stress values for round design versus square design: (full rotation or free to rotate) (ANSYS) results Table 7 Stress...