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inertia welding

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c0047817
EISBN: 978-1-62708-233-4
...Abstract Abstract A pushrod made by inertia welding two rough bored pieces of bar stock installed in a mud pump fractured after two weeks in service. The flange portion was made of 94B17 steel, and the shaft was made of 8620 steel. It was disclosed by visual examination that the fracture...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001808
EISBN: 978-1-62708-180-1
... inclusions, brittle second-phase particles, weld defects, or arc strikes. Occasionally, brittle fractures are encountered, particularly in low-temperature environments or as a result of impact or a rapidly applied overload. Brittle fracture may thus be attributable to inappropriate choice of material...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001842
EISBN: 978-1-62708-241-9
... analysis, microhardness and tensile testing, stress calculations, and vibration measurements. Based on the results, the roll fracture was attributed to high-cycle fatigue associated with a plug weld over one of the five threaded fasteners added to secure a balance weight inside the roll. The balance weight...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001618
EISBN: 978-1-62708-219-8
...Abstract Abstract Arms bolted to powerline towers were falling off two weeks after installation. Metallurgical and chemical analysis performed on the base metal, weld zone, and heat-affected zone showed acceptable quality material. Residual stress appeared to be responsible for the high failure...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001724
EISBN: 978-1-62708-234-1
..., placing the center of the thickness in severe tension which would remain as residual stress, the worst possible condition for resisting the hoop stress due to the mass of the bell and the stress produced by the outward thrust from inertia of the end turns of the rotor windings. “To produce end bells...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c9001723
EISBN: 978-1-62708-221-1
... involved minor components, others have concerned main structural members and have led, in some instances, to collapse and complete loss of the crane. Many of these major mishaps have resulted from welding deficiencies, but others have stemmed from failure of the jib tie-bars or associated fittings. Some...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001810
EISBN: 978-1-62708-180-1
... Dull indentations in raceway at same spacing as rolling elements See Fretting and Indentation Wear, together with discoloration Running without lubricant or with lubricant that has hardened Wear at points of contact with cage Inertia forces acting on cage and insufficient lubricant Wear...
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 Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003509
EISBN: 978-1-62708-180-1
...Abstract Abstract This article briefly reviews the general causes of weldment failures, which may arise from rejection after inspection or failure to pass mechanical testing as well as loss of function in service. It focuses on the general discontinuities observed in welds, and shows how some...
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
... and the stress analysis, but also the “big picture.” It is common for the materials failure analyst to identify the fracture origin and any material discontinuity at the origin. But what is the root cause? For example, in a welded structure, the joints are by their very nature discontinuities and thus likely...
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
... is the root cause? For example, in a welded structure, the joints are by their very nature discontinuities and thus likely origins in fractures. However, did the welds meet the conditions for “fitness-of-purpose” requirements? Were the weld codes and standards applicable for the actual conditions? A part...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c9001578
EISBN: 978-1-62708-233-4
... moment of inertia.” A building recently constructed at a university had objectionable levels of both sound and vibration. Both problems were related to the three pulse furnaces used to heat the building. The furnaces were located in the basement, and the flues ran under the floors, up a chase...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003526
EISBN: 978-1-62708-180-1
... such as the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code, numerous ASME and foreign piping codes, American Petroleum Institute (API) requirements, Welding Research Council (WRC) requirements, and more. These codes have been developed over many years to address the needs of the piping...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006773
EISBN: 978-1-62708-295-2
... in manufacture, processing, or assembly. Microstructural defects, subsurface laminations, and welding defects are common examples of materials defects that cause failure. In many cases when there is clear evidence of a materials-related cause of failure, simply changing the material to one that is more...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003569
EISBN: 978-1-62708-180-1
... through a shaft drilling into a bearing is interrupted by the edge of the oil outlet as the drilling rotates or by inertia forces, high pressure can be produced. This variation of pressure can generate cavitation damage ( Ref 20 , 21 , 22 , 23 ). Wear Particles Produced by Cavitation Wear...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001459
EISBN: 978-1-62708-234-1
... and, later, the internal combustion engine because of the need to reduce the scantlings in order to minimise both inertia effects and total weight, and it was then no longer practicable to strengthen parts by simply increasing their dimensions. With the turn of the century the problem of fatigue failure had...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006781
EISBN: 978-1-62708-295-2
... Crystal Ni-Base Superalloy ,” Ph.D. dissertation, Mechanical Engineering , Georgia Institute of Technology , Atlanta , 2010 , p 321 4. Anderson-Wedge K.V. , Characterization of the Evolution of 2219-T87 Aluminum as a Function of the Self-Reacting Friction Stir Welding Process...