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Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001073
EISBN: 978-1-62708-214-3
...Abstract Abstract Replacement sprockets installed on chain drive shafts for winding fibers exhibited excessive wear. Metallographic and chemical analyses conducted on the original and replacement sprockets showed that the material of the replacement sprocket was 1020 low-carbon steel, whereas...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001303
EISBN: 978-1-62708-215-0
... because of gross overload. Use of an alloy with a much higher yield strength and improvement in design were recommended. Chain drives Cracking Motor vehicles Sand castings UNS A14130 A413.0 LM6M (Other, general, or unspecified) fracture Background Visual Examination of General Physical...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0089254
EISBN: 978-1-62708-225-9
.... The device is used to attach a chain sprocket to a shaft without the use of a locking key, enabling the shaft to either drive or be driven anywhere on the shaft (see Fig. 1 ). The configuration consists of an assembly of four tapered rings ( Fig. 2 ) that are retained by a series of cap screws. As shown...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003541
EISBN: 978-1-62708-180-1
..., polymers cannot be fabricated at their maximum packing density. Molecular scale voids, known collectively as free volume, exist within the polymeric macromolecular structure. Applied stress serves to straighten the polymer chains and perhaps to redistribute the free volume so that sizable microvoids...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c9001535
EISBN: 978-1-62708-232-7
... micrographs showing improper carbide morphology and distribution in a typical field of the failed roll are shown in Fig. 10 at 2000×. The secondary electron (SE) image in Fig. 10 shows a chain-like carbide segregation with a relatively large triangular particle. Numerous fine globular carbides are found...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003550
EISBN: 978-1-62708-180-1
... the macromolecular chains, reducing molecular weight, and diminishing polymer properties as a result. Each of these effects is examined in subsequent paragraphs. Plasticization, Solvation and Swelling Environmental Stress Cracking Polymer Degradation by Chemical Reaction Surface Embrittlement...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001759
EISBN: 978-1-62708-241-9
... Cause and effect diagram is also known as Ishikawa diagram which is a very effective tool for finding out all possible causes. This exercise is done with a cross-functional team (CFT) representing various functions in organization, like design, quality, service, manufacturing, supplier chain management...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001811
EISBN: 978-1-62708-180-1
..., such as hooks, chains, wire rope, slings, beams, bales, and trunnions; and built-in members such as shafts, gears, and drums. chains cranes failed shafts hooks lifting equipment wire rope LIFTING EQUIPMENT is used for raising, lowering, and transporting materials, parts, and equipment, generally...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006830
EISBN: 978-1-62708-329-4
...Abstract Abstract The types of metal components used in lifting equipment include gears, shafts, drums and sheaves, brakes, brake wheels, couplings, bearings, wheels, electrical switchgear, chains, wire rope, and hooks. This article primarily deals with many of these metal components of lifting...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003571
EISBN: 978-1-62708-180-1
... sliding. Because of the presence of frictional stress and heat, the PTFE molecular chains are oriented in the direction of sliding and a transfer film is deposited onto the counterface. The molecular orientation in PTFE is responsible for the drop in friction coefficient. Although the friction coefficient...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c9001901
EISBN: 978-1-62708-218-1
... these advances, POM is subject to depolymerization if the backbones of the molecules are cleaved, thereby creating new unstable chain-ends. Backbones may be cleaved by chemical, mechanical, radiological, or thermal means. However, the only likely mechanisms for the sensor housing are chemical and/or thermal...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001833
EISBN: 978-1-62708-241-9
... of grain boundaries ( Fig. 4b ). The SEM observation combined with EDX indicates that the microstructure of the steam chest material is primarily ferrite with granular, chrome-rich carbides. The grain boundary carbides frequently develop a chain or semicontinuous distribution ( Fig. 5 ). However, in spite...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006757
EISBN: 978-1-62708-295-2
...Basic characteristics of engineering polymers Table 1 Basic characteristics of engineering polymers Location (a) Characteristics Examples (b) 1 Flexible and crystallizable chains PEPPPVCPA 2 Cross-linked amorphous networks of flexible chains Phenol-formaldehyde cured...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003522
EISBN: 978-1-62708-180-1
... preparation microstructure polymers secondary ion mass spectroscopy wear damage X-ray powder diffraction EXAMINATION of a damaged component involves a chain of activities that, first and foremost, requires good observation and documentation. If the component is being examined on site where...
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
... Society of Mechanical Engineers 17. Talbot T.F. , Safety for Special Purpose Machines , Paper 87-WA/DE-8, American Society of Mechanical Engineers 18. Talbot T.F. , Chain Saw Safety Features , Paper 86-WA/DE-16, American Society of Mechanical Engineers 19. Talbot T.F...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001762
EISBN: 978-1-62708-241-9
... energy conditions comparable to that of an in-service axle failure. Prevention of excessive movement of the axle assembly through the leaf springs under loading required a chain around the loaded spring to limit vertical travel. The axle assembly came with aluminum wheels and these were loaded directly...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003537
EISBN: 978-1-62708-180-1
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006774
EISBN: 978-1-62708-295-2
... polymeric material, carbon atom backbone chains and pendant atoms on the chain are covalently bonded. The individual polymeric chains are then either van der Waals bonded or may be cross linked, that is, covalently bonded. Covalent (and ionic) bonds are typically high-strength bonds, while the van der Waals...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001763
EISBN: 978-1-62708-241-9
... with both forward and backward movement but with the chain-driven mechanism designed for motorcycles substituted with a gear-driven mechanism. Such a gear-driven transmission system provides various speed-power ratios, enhancing the movements and power transmission efficiency. However, for a general-purpose...
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
... for the wormhole pitting of carbon steel piping used to transport a slurry of magnesium hydroxide and alumina at pH 10.5 ( Ref 17 ). Whatever the environmental conditions, microorganisms need water, a source of energy to drive their metabolism, and nutrients to provide essential building materials (carbon...