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gear wear

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Published: 31 December 2017
Fig. 23 Effect of retained austenite on gear wear. (a) Depth of wear indentation versus percent retained austenite on the surface of heavily loaded carburized 9317 gears. (b) Gear life as a function of retained austenite More
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Published: 15 May 2022
Fig. 15 Acetal gear wear from under loads of (a) 7 Nm, (b) 10 Nm, and (c) the surface debris (×500). Reprinted from Ref 54 with permission from Elsevier More
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Published: 01 January 2002
Fig. 36 Spiral bevel gear teeth showing contact wear. Insert A shows a tooth area exhibiting no wear. Insert B shows abrasive wear clearly cutting away 3.2 mm ( 1 8 in.) of the surface without damage to underlying material. More
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Published: 01 January 2002
Fig. 39 Carburized AMS 6260 steel gear damaged by adhesive wear. (a) Overall view of damaged teeth. (b) Etched end face of the gear showing excessive stock removal from drive faces of teeth More
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Published: 01 January 2002
Fig. 46 Pitting and wear pattern on a carburized AMS 6263 steel impeller drive gear. Approximately 2.3× More
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Published: 01 January 1996
Fig. 10 Helical gear with serious ledge wear due to micro- and macropitting More
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Published: 30 August 2021
Fig. 22 Severe adhesive wear of a mild steel gear More
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002375
EISBN: 978-1-62708-193-1
... Abstract This article summarizes the various kinds of gear wear, including fatigue, impact fracture, wear, and stress rupture, describes how gear life in service is estimated. It presents the rules concerning lubricants in designing gearing and analyzing failures of gears. The article presents...
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Published: 01 December 1998
Fig. 4 In-service defects as seen through a borescope designed for automotive servicing. (a) Carbon on valves. (b) Broken transmission gear tooth. (c) Differential gear wear. More
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006354
EISBN: 978-1-62708-192-4
... Abstract This article is concerned with gear tooth failures influenced by friction, lubrication, and wear, and especially those failure modes that occur in wind-turbine components. It provides a detailed discussion on wear (including adhesion, abrasion, polishing, fretting, and electrical...
Book Chapter

Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006358
EISBN: 978-1-62708-192-4
... Abstract This article discusses the physical signs of rolling-contact wear (RCW). It lists the major considerations in gear design and describes the mechanisms of RCW. The article provides a guide to rolling-contact fatigue (RCF) testing methods. It explains the steps involved in the processes...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006850
EISBN: 978-1-62708-395-9
... of an acetal gear wheel. acetal gear wheel bulk wear elastomers thermoplastics thermosets interfacial wear nylon polyurethane elastomeric coatings wear wear rate wear resistance PLASTICS (OR POLYMERS) are used in a variety of engineering and nonengineering applications in which...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006820
EISBN: 978-1-62708-329-4
... lubrication, the measurement of the backlash, and the necessary factors for starting the failure analysis. Next, the article explains various gear failure causes, including wear, scuffing, Hertzian fatigue, cracking, fracture, and bending fatigue, and finally presents examples of gear and reducer failure...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003327
EISBN: 978-1-62708-176-4
... Abstract Mechanical tests are performed to evaluate the durability of gears under load. Gear tooth failures occur in two distinct regions, namely, the tooth flank and the root fillet. This article describes the common failure modes such as scoring, wear, and pitting, on tooth flanks. Failures...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001815
EISBN: 978-1-62708-180-1
... to the failure examination. durability fatigue gear failures gear strength gears gear-tooth impact stress rupture wear GEARS can fail in many different ways, and except for an increase in noise level and vibration, there is often no indication of difficulty until total failure occurs...
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005739
EISBN: 978-1-62708-171-9
... plating high-velocity oxyfuel coating hydrogen embrittlement wear ELECTROLYTIC HARD CHROME (EHC) plating is a critical process that is used as a wear coating on landing gear and other components throughout the airframe structure. Electrolytic hard chrome plating is also used in combination...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006791
EISBN: 978-1-62708-295-2
...-scanning, and scratch tests. After a discussion on gear scuffing, information on the material-dependent adhesive wear and factors preventing adhesive wear is provided. adhesive wear coefficient of friction galling metal sliding contacts scoring scuffing seizure scratch tests twist compression...
Series: ASM Handbook
Volume: 4D
Publisher: ASM International
Published: 01 October 2014
DOI: 10.31399/asm.hb.v04d.a0005952
EISBN: 978-1-62708-168-9
... in. <0.5 <0.020 Push-rod balls and sockets Speedometer gears Shackle bolts Shifter forks Tie-rod ball studs and ball-stud sockets Finished before treatment except for possible polishing operation High degree of wear resistance Clean surface after treatment Transmission gears Transmission main...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005867
EISBN: 978-1-62708-167-2
... Abstract Induction hardening is a prominent method in the gear manufacturing industry due to its ability of selectively hardening portions of a gear such as the flanks, roots, and/or tips of teeth with desired hardness, wearing resistance, and contact fatigue strength without affecting...
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Published: 30 August 2021
grooving of the raceways and excessive wear of the rib and roller ends is evident. Similar wear can occur from hard third particles, such as bearing or gear materials, sand, or machining chips. More