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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c9001547
EISBN: 978-1-62708-225-9
... springs and during the use of sustain-loaded compression springs in aerospace hardware. Failures have been analyzed and sources of the reliability problems identified. References 1. Corrosion Resistant Steel Wire, 17Cr-7Ni-1A1 Precipitation Hardening — Spring Temper , Aeronautical Material...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0046737
EISBN: 978-1-62708-229-7
... of the failures. A total of 35 samples of cracked hardware (21 castings and 14 bolts and nuts) from different zones of the cooling tower were removed for examination. The castings were made of copper alloys C86200 and C86300 (manganese bronze). The bolts and nuts were made of copper alloy C46400 (naval brass...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006761
EISBN: 978-1-62708-295-2
... analyst must keep in mind. These considerations include the test location and orientation, the use of raw material certifications, the certifications potentially not representing the hardware, and the determination of valid test results. The article introduces the concepts of various mechanical testing...
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
...Abstract Abstract Several 6063-T6 aluminum alloy extension ladders of the same size and type collapsed in service in the same manner; the extruded aluminum alloy 6063-T6 side rails buckled, but the rungs and hardware remained firmly in place. The ladders had a maximum extended length of 6.4 m...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003519
EISBN: 978-1-62708-180-1
... sometimes determine the resources and constraints. Resources and constraints may simply involve the same three items: money, personnel, and time. Constraints can also include inability to destroy the hardware, lack of other pieces to review, lack of information, and so on. The goal of the failure...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006755
EISBN: 978-1-62708-295-2
... investigations discover the root cause(s) and provide a recommendation for corrective action(s), but no follow-up evaluations are performed to see if the corrective action worked. Failure investigation embraces the scientific method learned in elementary school: Ask a question: Why did this hardware...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003558
EISBN: 978-1-62708-180-1
... engineering practice of evaluating and verifying solutions and designs. Generally, this structure and control involve the characterization and control of hardware and operating conditions and identifying a procedure for monitoring wear. Ideally this procedure should involve the measurement of wear...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001199
EISBN: 978-1-62708-235-8
.... of Diecasting Engineers ( 1975 ) Paper GT 75 122 2. Marchok R. P. , Draper A. B. , Elimination of Metal Waves in Hardware Finish Zinc Die Casting , Modern Castings 50 ( 1966 ) 66 3. Wilcox R. L. , Die Casting with Zinc Base Alloys , American Smelting and Refining Co. , New...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001754
EISBN: 978-1-62708-241-9
... of interest. For brevity, only the most relevant pieces of evidence will be discussed. Fig. 1 As-received photographs of the primary hardware of interest in the investigation: ( a ) beveled gear, ( b ) sleeve, ( c ) outer race, ( d ) inner race, ( e ) rolling elements, ( f ) generic schematic...
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
... the design cycle from conceptual design to production and deployment. Tools have been developed to reduce the amount of labor required for the analysis and to evaluate hardware-, software-, material-, and process-related causes of failure. Significant progress is also being made in automated tools...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0006406
EISBN: 978-1-62708-217-4
.../asm.hb.v11.a0003553 Visual examination of the crack edge shown in Fig. 1(a) revealed that the installation of the fasteners produced a fit up stress, as indicated by the approximate 0.75-mm (0.03-in.) springback of the flange after the crack propagated through the hardware. Further inspection...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0006448
EISBN: 978-1-62708-217-4
... , ASM International , 2002 , p 823 – 860 10.31399/asm.hb.v11.a0003553 Visual analysis of the hardware showed that two of the three bearings were cracked. One of these two bearings, designated bearing 1 in Fig. 1(a) , contained two separate cracks. One of these cracks took the path shown...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.9781627082952
EISBN: 978-1-62708-295-2
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
.... The analytical equipment system is small, and its cost is about equal to that of a top quality metallograph. The technology has developed to the point where potential solutions to vibration problems can be modeled on a computer and evaluated before being put into hardware. Of course, the individual doing...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001294
EISBN: 978-1-62708-215-0
... less effort for requalification. Requalification is necessary for design/material changes of flight hardware. The surface of a failed AM-355 poppet is shown in Fig. 2 . The low-magnification micrograph shown in Fig. 2(a) shows that the surface is rough with evidence of intergranular separation...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001317
EISBN: 978-1-62708-215-0
... problems. Specimen 1 was removed by cutting along the circumferential weld joint (retaining some portion of the weldment with the dished end) after the sodium was drained off and the internal hardware was removed. Similarly, one of the two dished ends from the other vessel (specimen 2) that had been...
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
... hardware, “Mechanical and Material Requirements for Wheel Bolts,” employs a serrated wheel stud configuration that is carburized. The core hardness is consistent with an SAE Grade strength level. Serrated truck wheel studs, prior to around 1984, conformed to this grade. See Table 1 for requirements...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.marine.c9001703
EISBN: 978-1-62708-227-3
... and the pedestal bracket ( Figure 4 ), at the point where two U-spacers would butt up against each other. Following removal of the antenna, various additional pieces of hardware were supplied, including all three of the threaded studs, and most of the washers, spacers, and nuts from the two upper spindle...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001713
EISBN: 978-1-62708-220-4
... the water jacket ruptured. This may imply that the access covers were still in place when the water jacket ruptured. However, only one of the access covers for the blender (without the lock-down hardware) was recovered after the accident, and although this cover was concave shaped and bent in a manner...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003501
EISBN: 978-1-62708-180-1
... the cause or reduce the risk to an acceptable minimum. Some hardware systems approaching a “failure-free” condition may be produced when actions are taken at all levels that are based on: Attention to past experiences with similar systems Availability of risk information for all project personnel...