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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c9001514
EISBN: 978-1-62708-218-1
... of the injuries sustained by the driver. The faulty welds in the unit body were apparently a consequence of improper settings of parameters on a multihead electrical resistance spot welding machine. Lack of appreciation of the hazard associated with failure of this weldment may have contributed to the low...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001364
EISBN: 978-1-62708-215-0
... that a self-sustaining aluminum/refrigerant reaction (freon fire) had occurred in the failed compressor. The deposit samples consisted primarily of aluminum fluorides and carbon, known products of a high-temperature aluminum/refrigerant reaction. The highly exothermic reaction, which consumes aluminum, led...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001906
EISBN: 978-1-62708-217-4
... Abstract Suspension lugs fabricated from AISI 4340 steel used to facilitate loading of bombs onto the underside of military aircraft could not sustain required loads during routine proof load testing. Three failed lugs underwent visual examination, chemical analysis, metallography, hardness...
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 Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006753
EISBN: 978-1-62708-295-2
... in a production environment. Six Sigma adopts these themes and extends the “reach” of the system to all levels of organizations, with a system to achieve, sustain, and maximize business success ( Ref 10 ). Six Sigma is founded on the use of measurements, facts, and statistics to move organizations in directions...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.petrol.c9001247
EISBN: 978-1-62708-228-0
... material which could not then sustain the normal running conditions. Sulphidation could have occurred during the overheating period thereby weakening the tube just prior to rupture. Analysis has shown the corrosion products to be complex containing iron, nickel and sulphur. The form of the corrosion...
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
... approach can reduce and help eliminate turbulent flow problems, saving potentially millions of manufacturing dollars through enhanced part production quality and fewer delivery schedule delays. The results may also have important long-term implications, positively impacting Air Force sustainability...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001774
EISBN: 978-1-62708-241-9
... [ 1 ]. SCC results from the combined action of three factors, namely, sustained tensile stresses in the material, a corrosive medium (a chloride-bearing or hydrogen-sulfide environment), and elevated temperature. There are also other factors which affect the SCC mechanism in austenitic grade...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001383
EISBN: 978-1-62708-215-0
... as sustained-load clamp tests, with and without a 5% salt solution. Visual Examination of General Physical Features The appearance of both front and rear stud failures were similar in that the fracture surfaces showed no sign of fatigue beach marks or deformation in the form of shear lips that would...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006927
EISBN: 978-1-62708-395-9
... manner. The sustainable design perspective aims to address the user’s feeling of attachment toward the product, and to meet the user’s need to retain and reuse the product. Giving serious forethought to the user’s emotions while using the product; attempting to encourage the end-user’s behavior...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001049
EISBN: 978-1-62708-214-3
.... Deep corrosion fissures then developed at hot crack sites as a result of crevice corrosion. Use of the appropriate overlay material was recommended. Claddings, corrosion Wood products 309 UNS S30900 Crevice corrosion Surface treatment related failures Background Routine inspections...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006938
EISBN: 978-1-62708-395-9
... expansion mismatch between materials and time-based failures such as creep and environmental stress cracking if a sustained load is present. Design envelope considerations regarding the assembly of parts in a product therefore include the identification and specification of the nature of intended...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001094
EISBN: 978-1-62708-214-3
... sustained torque loading, and environmental exposure to distilled water, city water, rainwater, and brackish water under various torque loadings. The conditions of the field failures, that is, loss of torque and intergranular cracking, were reproducible for all the aqueous environmental exposures...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006784
EISBN: 978-1-62708-295-2
... environmental hydrogen. It is also commonly considered a subcritical crack growth mechanism that often produces time-delayed fractures in production parts (especially high-strength steels) even with no externally applied stress. The phenomenon is characterized by the simultaneous interactions of sustained...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c0089572
EISBN: 978-1-62708-218-1
... of dendritic segregation at lower left. 65x. (d) Micrograph showing nonhomogenized microstructure consisting of transformation products and ferrite. 65x The appearance of the fracture surface suggests that propagation of the crack occurred in a sequence of four large increments (regions B, C, D, and E...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001907
EISBN: 978-1-62708-217-4
... the plating process (in the case that the parts were electroplated rather than vacuum coated). The bolts were loaded to 80% of the UTS and sustained for 200 h. No failures occurred as a result of this testing. Also, ARL examined a number of bolts from different manufacturing lots for carburization and grain...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001084
EISBN: 978-1-62708-214-3
.... The latter had sustained substantial mechanical damage, rendering it useless for evaluation. Therefore, the entire failure analysis was performed on small sections cut from the impeller itself. Visual Examination of General Physical Features The surface of the casting was visually examined for casting...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003552
EISBN: 978-1-62708-180-1
... of a steel component is suspected. Many of the types of parts that were commonly diagnosed with hydrogen embrittlement in the 1980s and 1990s were low-cost commodity products, such as self-tapping screws and small spring clips. The financial resources available to perform a failure analysis in such cases...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003556
EISBN: 978-1-62708-180-1
... by the organisms disrupting the protective film. In addition to corrosion and hydrogen effects, the buildup of certain microbial metabolites in an environment may also foster crack growth by EAC. One example is the production of high levels of CO 2 needed to sustain near-neutral pH SCC ( Ref 42 ). This CO 2...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.marine.c9001617
EISBN: 978-1-62708-227-3
... cracks had been exposed to seawater, usually were uniformly corroded, but, in one case, bands of corrosion product with different colors were observed ( Fig. 7 ). For inboard couplings, on the other hand, there were generally little or no signs of corrosion on fracture surfaces, and x-ray photoelectron...