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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c0090626
EISBN: 978-1-62708-218-1
... decreased the compressive residual-stress levels in the springs. Recommendation was made to increase the time the spring was shot peened from 12 to 60 min. Automotive components Residual stresses Shot peening Spring steel Surface treatment related failures A steel spring used in an automotive...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0048164
EISBN: 978-1-62708-217-4
.... It was indicated by chevron marks that brittle fracture had started beneath the brinelled area at the forward edge of the upper surface of the spring. The origin of the brittle fracture was found to be a small fatigue crack that had been present for a considerable period of time before final fracture occurred...
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
... (as well as the compressive yield strength) which is comparable to but not to exceed that of the indenter. After reviewing the available materials, it is possible to utilize AMPCO 25. Unfortunately, at the time of this investigation AMPCO 25 was not available and because of time constraints typical of many...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006768
EISBN: 978-1-62708-295-2
... J.E. and Leverant G.R. , Influence of Compressive Residual Stress on the Crack Opening Behavior of Parts through Fatigue Cracks , Residual Stress Effects in Fatigue: ASTM Special Technical Publication 776 , ASTM PCN 04-776000-30, 1981 , p 204 – 210 70. Zhang X.J. and Gaudett...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001305
EISBN: 978-1-62708-215-0
... that the crack had existed for a considerable time prior to derailment and initiated in the flange. Failure propagated from the flange across the rim and down the plate to the bore of the hub. Two zones that exhibited definite signs of heating were observed. The fracture initiation site was typical of fatigue...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006792
EISBN: 978-1-62708-295-2
... Fatigue Assessment of Railway Wheels , Wear , Vol 258 ( No. 7 ), 2005 , p 973 – 980 10.1016/j.wear.2004.03.044 113. Kobayashi M. , Matsui T. , and Murakami Y. , Mechanism of Creation of Compressive Residual Stress by Shot Peening , Int. J. Fatigue , Vol 20 ( No. 5 ), 1998...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003528
EISBN: 978-1-62708-180-1
..., polycrystalline, and semicrystalline materials ( Ref 1 , 20 ), where thousands of grains are sampled in a typical measurement. When the material is in tension, the d -spacing increases in the direction of stress, and when the material is in compression, the d -spacing decreases. The presence of residual...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001487
EISBN: 978-1-62708-234-1
... at which time silver-bearing copper was not available. The use of hard-drawn silver-bearing copper for a rewind, in conjunction with special attention to blocking up the end windings, is confidently expected to effect a complete cure. Alternators Deformation Cu-Ag (Other, general, or unspecified...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001054
EISBN: 978-1-62708-214-3
..., or one-sixth) of this torque. Testing methods are illustrated in Fig. 2 . Tests were performed in either dry laboratory air (relative humidity to 30%) or in air saturated with water vapor. Failure time at a torque level of one-half the fracture torque was about 30 days in specimens tested in dry air...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0051293
EISBN: 978-1-62708-225-9
...Abstract Abstract Majority of the water feeders in a new chicken house had stopped working. The water feeders were found to be operated on the principle that when the chickens pecked a plastic bowl, a compressed spring released a squirt of water. The small compression springs were made from...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001552
EISBN: 978-1-62708-217-4
... engines. Aircraft engine manufacturers and aeronautical standards require magnetic particle inspection to detect grinding cracks after reconditioning. Renitriding after any grinding is needed also, regardless of the amount of undersize as it introduces beneficial residual compressive stresses...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001377
EISBN: 978-1-62708-215-0
... into the normally sealed bearing cap chamber surrounding the bolt shank. A complete absence of fractures in bolts from one of the two vendors was attributed primarily to surface residual compressive stresses produced on the bolt shank by a finish machining operation after heat treatment. Shot cleaning, with fine...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001491
EISBN: 978-1-62708-217-4
... with such shear lines. Ten(10) nozzle assemblies had been made to the above procedures and ten(10) had been successfully proof tested at the time that this report was prepared Tensile and compression testing of coupons cut from prolongations at both ends of ten(10) silica phenolic exhaust nozzle liners have...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c9001733
EISBN: 978-1-62708-225-9
.... Magnification 480 and 600 times. Laboratory fatigue tests were made with either a compression fatigue tester (buckling) or a reversedbending fatigue tester at 250 cycles per min and a load of 10 pct of the cable breaking strength (approximately 50 to 60 kg). Fracture surfaces from both compression...
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
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001762
EISBN: 978-1-62708-241-9
... at approximately 45% of the compressive yield stress [ 11 ]. Since the wheel is turning in a yaw, it is possible that these compressive residual stresses, if present, could be lost at some point in time prior to the accident. Tire patch forces for the loss of compressive residual forces were estimated...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003573
EISBN: 978-1-62708-180-1
... ratio for two steel cantilever beams of rectangular cross section. Distortion ratio is permanent deflection, measured at a distance from the support ten times the beam thickness, divided by beam thickness. Stress ratio is maximum stress, calculated from applied load and original beam dimensions, divided...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006797
EISBN: 978-1-62708-295-2
... Relation of distortion ratio to stress ratio for two steel cantilever beams of rectangular cross section. Distortion ratio is permanent deflection, measured at a distance from the support ten times the beam thickness, divided by beam thickness. Stress ratio is maximum stress, calculated from applied load...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003510
EISBN: 978-1-62708-180-1
... at the surface (due to lower temperature) is resisted by the greater volume in the core, resulting in the surface being in tension and the core in compression. Fig. 10 Development of thermal stresses within steel on cooling. T, time instant at maximum temperature difference; 0, time instant of stress...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c9001596
EISBN: 978-1-62708-225-9
... failure, all nine of the original units experienced spring failures, listed in Table 1 . Additionally, in the same time period, another similar compressor system also experienced spring failures with the first one occurring at 78K. A summary of the failure cycles for this system is also shown in Table 1...