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wear design

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Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003558
EISBN: 978-1-62708-180-1
... to reduce the clearance. This method is an example of a simple phenomenological model. A more elaborate model would be describing the wear situation as unlubricated mild sliding, impact, or rolling wear, and using analytical models for these wear situations to develop relationships between wear and design...
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
... provides information on not only better materials, but also design changes intended to reduce wear and increase service life. bushing wear relative hardness aluminum bronze distortion microstructural analysis coefficient of friction AMPCO 45 (aluminum bronze) UNS 63000 D2 (high carbon, high...
Image
Published: 30 August 2021
Fig. 9 Schematic showing increased contact area in the updated seal wear ring design. Note the contact area of the seal wear ring in (a) the conventional design compared to (b) the updated design More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c0048169
EISBN: 978-1-62708-233-4
... member by the radial wear marks on the convex surface. Beach marks indicating that fatigue fracture had been initiated at the convex surface of the washer and had propagated across to the concave surface were revealed by examination of the fractured surfaces of the washer. The cracks were revealed...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0046422
EISBN: 978-1-62708-234-1
... Abstract Stator vanes (cast from a Cu-Mn-Al alloy) in a hydraulic dynamometer used in a steam-turbine test facility were severely eroded. The dynamometer was designed to absorb up to 51 MW (69,000 hp) at 3670 rpm, and constituted an extrapolation of previous design practices and experience. Its...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003560
EISBN: 978-1-62708-180-1
..., wear accounts for approximately 55%, while corrosion accounts for the other 15%. Thus, wear can be a serious problem in design engineering and materials selection. Moreover, of the 55% due to wear, the loss of usefulness from abrasion is 20%. Consequently, abrasive modes of wear are a significant...
Book Chapter

Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006790
EISBN: 978-1-62708-295-2
..., wear accounts for approximately 55%, while corrosion accounts for the other 15%. Thus, wear can be a serious problem in design engineering and materials selection. Moreover, of the 55% due to wear, the loss of usefulness from abrasion is 20%. Consequently, abrasive modes of wear are a significant...
Image
Published: 01 January 2002
Fig. 30 Correlation of hardness with wear rate for three materials. The two 50 HRC materials both exhibit the same low-stress scratching wear resistance. However, as the wear severity increases, the steel designed for ground-engaging tools (steel A) exhibits moderate improvements in gouging More
Image
Published: 15 January 2021
Fig. 30 Correlation of hardness with wear rate for three materials. The two 50 HRC materials both exhibit the same low-stress scratching wear resistance. However, as the wear severity increases, the steel designed for ground-engaging tools (steel A) exhibits moderate improvements in gouging More
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001803
EISBN: 978-1-62708-241-9
... into several categories: misuse; assembly or implantation errors; design errors, including improper selection of materials; corrosion; corrosion fatigue; and wear. According to statistical data, approximately 100 million metallic implants were installed in humans between 1940 and 1975. [ 1 ] The most...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0009190
EISBN: 978-1-62708-225-9
... that the failure resulted from several interrelated factors: the lubricant viscosity was too low causing high temperatures; no antiscuff additives were used; a gearbox designed as a speed reducer was used as a speed increaser (the designer selected a long-addendum tooth for the pinion); the gear teeth were...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001087
EISBN: 978-1-62708-214-3
... and open rotor (impeller). Both the case and the ductile iron rotor core were covered by natural rubber. Analyses conducted included surface examination of wear patterns, chemical analysis of materials, measurement of mechanical properties, and in-place flow tests. It was determined that the proximate...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c0048064
EISBN: 978-1-62708-224-2
.... Corrective Measures The coil hooks were remade to a laminated design ( Fig. 1c ); these hooks were flame cut from ASTM A242 fine-grain steel plate, then ground to remove the material damaged by flame cutting. The hooks were stress relieved at 620 °C (1150 °F) after welding but before riveting the wear...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006806
EISBN: 978-1-62708-329-4
... analysis of sliding bearings are also covered. Finally, the article discusses wear-damage mechanisms from the standpoint of bearing design. bearing design elastohydrodynamic lubrication failure analysis lubricants sliding bearings wear MECHANICAL EQUIPMENT usually contains moving parts...
Image
Published: 01 January 2002
Fig. 22 Original and improved designs of a 17-7 PH stainless steel valve-seat retainer spring. As originally designed, the inner tabs on the spring broke off as a result of fatigue, and the outer tab exhibited wear. More
Image
Published: 30 August 2021
Fig. 36 Original and improved designs of a 17-7 PH stainless steel valve-seat retainer spring. As originally designed, the inner tabs on the spring broke off as a result of fatigue, and the outer tab exhibited wear More
Image
Published: 01 June 2019
Fig. 1 Original and improved designs of a 17-7 PH stainless steel valve-seat retainer spring. As originally designed, the inner tabs on the spring broke off as a result of fatigue, and the outer tab exhibited wear. More
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
..., and 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 Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0009222
EISBN: 978-1-62708-180-1
... in heat treatment. In this instance, the precise reason for failure is unknown, but the classification helps to establish a relationship between the various factors and indicates areas of repeated failure. Design Influences Tool Life If tools wear out in normal service, we assume that the design...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.rail.c9001138
EISBN: 978-1-62708-231-0
... effects, failure of the thread structure of the clevis occurred. The failure occurred where the cylinder rod screws into the clevis. The rod was manufactured from 1045 steel. Cylinder rods Fretting fatigue Galling Railroad wheels 1045 UNS G10450 Fatigue fracture Fretting wear A. Design...