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test pin

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Published: 15 January 2021
Fig. 14 Principal test setups for evaluating galling resistance. (a) Pin-on-disk test. (b) Modified cylinder-on-cylinder test. Adapted from Ref 89 More
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Published: 15 January 2021
Fig. 7 (a) Hydrogen ions take electrons from the oxidation reaction, leading to continuous metal dissolution in an acidic solution. (b) Wear of 1030 carbon steel tested (pin-on-disc) in different solutions: oil + H 2 O (10 mL oil + 2 mL H 2 O), oil + NaCl (10 mL oil + 2 mL saturated NaCl More
Image
Published: 01 June 2019
Fig. 9 Electron micrographs of the shear band regions of the pins tested to failure for comparison. The manufacturer A shear band (a) is at a much lower angle to the pin axis than the other manufacturer's shear band (b). More
Image
Published: 15 January 2021
Fig. 4 Typical corrosive wear testing techniques. (a) Pin-on-disc tester (the specimen can be the pin or the disc) used to perform abrasion-corrosion tests (using hard abrasive pin or disc as the counterface) and sliding wear corrosion tests (using relatively smooth counterface). Source: Ref More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001660
EISBN: 978-1-62708-236-5
... to provide this information. Procedure and Results Failed Pins Since the mating collars to the failed pins were intact, they were torque-tested in accordance with the required specification. The torque values were within the required range. The failed pins were examined in a scanning electron...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c9001530
EISBN: 978-1-62708-225-9
... examined. Both samples were subjected to accelerated wear tests in a laboratory type pin-on-disk apparatus. During the tests, the bearing materials acted as pins, which were pressed against a rotating cast iron disk. The wear behaviors of both bearing materials were studied using weight loss measurement...
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
... quality and/or, if the end that failed had been flamecut instead of sheared, then the damage resulting from the excessive overload would have been limited to yielding of the material in the region of the pin-joint. Such yielding on an overload test further indicated that the scantlings of the pin-joints...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0048634
EISBN: 978-1-62708-225-9
... fasteners were installed in fixtures in which a constant load equivalent to 90% of the rated ultimate tensile strength could be maintained on the specimens. Stress-rupture testing was performed on lever-arm-type creep machines. Testing of any lot of pins was suspended when one pin failed (indicating...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001815
EISBN: 978-1-62708-241-9
... specimens were machined and tested from service-fractured pins as well as exemplar stock pins from known good lots. Full-sized pins from the suspect production lot were also tensile tested to observe the normal overload fracture characteristics at room temperature. The full-sized pins fractured at the same...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001230
EISBN: 978-1-62708-236-5
... Abstract A crankshaft was overloaded on a test stand and suffered an incipient crack in the crank pin. The crack run generally parallel to the longitudinal axis and branched off at the entrance into the two fillets at the transition to the crank arm. It consisted of many small cracks, all...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001493
EISBN: 978-1-62708-235-8
... two points could be shorted through various electrical paths. A six layered PCB revealed a short circuit between pin 39 and plated through hole at U30-11, Figure 5 . The six layers were numbered layers 6 through 10 and review of the artwork and continued electrical testing revealed that pins A and B...
Image
Published: 01 June 2019
Fig. 8 Photomacrographs of the fracture surfaces of the pins from the three manufacturers that were uniaxially tested to failure. Note the manufacturer A pins fractured through one thread root, while the manufacturers B and C pins fractured through a number of thread roots. More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0047856
EISBN: 978-1-62708-217-4
... Abstract The master connecting rod of a reciprocating aircraft engine revealed cracks during routine inspection. The rods were forged from 4337 (AMS 6412) steel and heat treated to a specified hardness of 36 to 40 HRC. H-shaped cracks in the wall between the knuckle-pin flanges were revealed...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001812
EISBN: 978-1-62708-180-1
... to improve the integrity of highly stressed joints. The usual bolts, pins, rivets, and blind fasteners are used for composites; however, the many problems encountered have stimulated the development and testing of numerous special-purpose fasteners and systems. Some of these problems are drilling...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001037
EISBN: 978-1-62708-214-3
... the pin. Fig. 5 Macrograph of sample 2 taken along the longitudinal axis, showing cracks emanating from both the inner and outer diameters. Unetched. 15├Ś. Chemical analysis/identification Coatings or Surface Layers Hardness tests were performed on the cross section of the pin...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006805
EISBN: 978-1-62708-329-4
... bonding to improve the integrity of highly stressed joints. The usual bolts, pins, rivets, and blind fasteners are used for composites; however, the many problems encountered have stimulated the development and testing of numerous special-purpose fasteners and systems. Some of these problems include...
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
... the differential pin ( Fig. 1 ). The button dent in axle 2 is larger than the one for axle 1 which had a higher failure load. This larger dent is shown in Fig. 5 . The difference in dent sizes is probably related to the energy release conditions specific to each axle test. Axle test results Table 1 Axle...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001300
EISBN: 978-1-62708-215-0
... Abstract A bull gear from a coal pulverizer at a utility failed by rolling-contact fatigue as the result of continual overloading of the gear and a nonuniform, case-hardened surface of the gear teeth. The gear consisted of an AISI 4140 Cr-Mo steel gear ring that was shrunk fit and pinned onto...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006794
EISBN: 978-1-62708-295-2
... corrosive wear of materials include pin-on-disc, slurry-pot erosion, slurry-jet erosion, and cavitation-corrosion tests ( Fig. 4 ), which simulate different corrosive wear conditions. Figure 4(a) schematically illustrates a pin-on-disc tester in accordance with ASTM G 99 ( Ref 27 ) for evaluating abrasion...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.rail.c0046238
EISBN: 978-1-62708-231-0
... areas in an unused pin for metallographic study. The cracks were about 0.4 mm (0.017 in.) deep, and the thermal transformation area was about 0.8 mm (0.030 in.) deep. Tests showed that the failed knuckle pins were satisfactory with respect to case and core hardness, case depth, microstructure...