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circumferential wear marks

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0046222
EISBN: 978-1-62708-217-4
.... (b) Longitudinal score mark (region A) and circumferential scratches (arrow B) on shank that had been peened over. A galled area (arrow C) is also visible. At every overhaul, the spindles were fluorescent-magnetic-particle inspected, and the surface was carefully examined for evidence of wear...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001847
EISBN: 978-1-62708-241-9
... sleeve and brown oxidation tint is exhibited on the cylinder surface. Fig. 1 Failed sleeve and a new sleeve: ( a ) failed sleeve and ( b ) new sleeve Densely distributed deep circumferential wear marks ( Fig. 1a ) are present on the external surface in the left region of the cylinder...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006795
EISBN: 978-1-62708-295-2
... industries. This article describes the processes involved in erosion of ductile materials, brittle materials, and elastomers. Some examples of erosive wear failures are given on abrasive erosion, liquid impingement erosion, cavitation, and erosion-corrosion. In addition, the article provides information on...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006793
EISBN: 978-1-62708-295-2
... Abstract Impact or percussive wear is defined as the wear of a solid surface that is due to percussion, which is a repetitive exposure to dynamic contact by another body. Impact wear, however, has many analogies to the field of erosive wear. The main difference is that, in impact wear...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003562
EISBN: 978-1-62708-180-1
... compressive load, often changing its appearance, as discussed in the section “Effect of Debris on Wear” in this article. Fig. 14 Marks produced by a machined surface fretting against a polished flat When two surfaces are placed in contact and loaded, plastic deformation of contacting high...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006829
EISBN: 978-1-62708-295-2
... Abstract Fretting is a wear phenomenon that occurs between two mating surfaces; initially, it is adhesive in nature, and vibration or small-amplitude oscillation is an essential causative factor. Fretting generates wear debris, which oxidizes, leading to a corrosion-like morphology. This...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c0047823
EISBN: 978-1-62708-236-5
... one of them fractured after a few months of operation. Visual examination of fractured shaft revealed that the cracks originated from one of the keyways and propagated circumferentially around the shaft. The shaft and coupling slippage was indicated by the upset keys and this type of fracture. The...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001516
EISBN: 978-1-62708-234-1
... Abstract This paper deals with disk drive failures that occur in the interface area between the head and disk. The failures often lead to the loss of stored data and are characterized by circumferential microscratches that are usually visible to the unaided eye. The recording media in disk...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001849
EISBN: 978-1-62708-241-9
... divided into two principal categories according to the mechanism of failure [ 2 , 7 ]: Surface-initiated spalling that originates from thermal shock or firecracks or a stress raiser (e.g., bruise, roll mark, gouges) lying on the roll surface and propagates radially and circumferentially by a...
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
... Abstract Failure analysis was performed on threaded Ti-6Al-4V fasteners that had fractured in the threads during installation. Scanning electron microscopy (SEM) and optical metallography revealed that the fractures initiated in circumferential shear bands present at the thread roots. The...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c0046242
EISBN: 978-1-62708-236-5
... gear were severely damaged, and that a paste of gritty material was pressed into the gear teeth. Severe wear and broken teeth were also observed. A crack was found that apparently started in the keyway and continued circumferentially around the coupling (Details A and B, Fig. 1 ). Spectrographic...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.pulp.c0048804
EISBN: 978-1-62708-230-3
... surface were found to exhibit chevron marks typical of fatigue or raised points or tears pointing in the direction of the probable origin of failure. The characteristics of the thinwall cast iron structures like the variation in composition due to pouring from multiple ladles, variation in solidification...
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
... involved in or may have contributed to the failure should be examined, noting scuff marks, burnished areas, abnormal surface blemishes, and wear. These marks should be associated with some abnormal service condition, if possible. In addition, the failed part should be examined to establish the general area...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001846
EISBN: 978-1-62708-241-9
... lubrication chromium steel circumferential wear marks peel pits heat tinting fatigue striations SEM imaging fatigue strength 42CrMo (chromium-molybdenum alloy steel) 38CrMoAl (chromium-molybdenum-aluminum alloy steel) References 1. Steel-iron parts-determination of nitrided...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001536
EISBN: 978-1-62708-229-7
... pump shaft revealed by dye-penetrant examination. A diffuse, wavy circumferential line marking the lower boundary of the chromium surface plating may also be seen in Fig. 4 immediately above the relief groove. The region above this line is plated, and a portion of the cracking lies within this...
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
... marks and polished regions, both in the bore of the inner ring and on the shaft. The end face of the ring, which is in frictional contact with the shoulder on the shaft, shows a characteristic scuffing effect typified by heavy circumferential score marks and, in severe cases, by short radial cracks...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c9001485
EISBN: 978-1-62708-225-9
... considerable end thrust, one face being forced into heavy contact with one of the flanges of the inner race, resulting in smearing and wear to the extent shown by those marked X and Z. Although, in these two rollers, the zone of final fracture was located adjacent to the smeared end, this was not true of all...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003524
EISBN: 978-1-62708-180-1
... wear failures. The article provides information on the synthesis and interpretation of results from the investigation. Finally, it presents key guidelines for conducting a failure analysis. chemical analysis corrosion failure corrosion testing data collection failure analysis fracture...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001597
EISBN: 978-1-62708-236-5
.... Circumferential abrasive wear patterns were present over the entire journal surface, with more severe areas located along the center and near an area of spalling along the cracks ( Fig. 3 ). Several areas on the surface exhibited small, longitudinally oriented heat check cracks, particularly aligned with the wear...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001370
EISBN: 978-1-62708-215-0
... shown in Fig. 2 . The regions around the fracture location had diameters ranging from 31.4 to 34.7 mm (1.2 to 1.4 in.), indicating about 3.5 mm (0.14 in.) of mechanical wear of the shaft in the threaded portion of the sleeve nut. A 3 mm (0.12 in.) deep circumferential groove was visible 45 mm (1.7 in...