Systematic analysis of gear failures

McCall, James L.

doi:10.1016/0026-0800(86)90042-x

Cited by 2 publications

(4 citation statements)

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“…Fatigue resistance is of primary importance for gears, since one of the failure modes of these components is bending fatigue at the tooth root. Other reasons of failure are static or dynamic overloads, plastic deformation, adhesive wear, rolling contact fatigue, scuffing, but approximately one-third of the in-service rupture is statistically due to tooth root bending fatigue [11,12]. The applied loading at the root of gear teeth is multiaxial, as for many mechanical components.…”

Section: Introductionmentioning

confidence: 99%

Tooth root bending fatigue strength of small-module sinter-hardened spur gears

Benedetti

Menapace

2017

Powder Metallurgy

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The present paper is aimed at investigating the effect of the sinter-hardening treatment in improving the tooth root fatigue resistance of gears obtained by Powder Metallurgy. The gears were produced using two types of low-alloyed partially diffused steel powders, Distaloy DC and Distaloy DH (Höganäs AB, Sweden), that were conventionally sintered as well as sinter-hardened. A different microstructure was obtained after the two sintering processes that led to different fatigue response. As expected, the martensitic microstructure is responsible for good fatigue performances, slightly less than those of gears made with wrought low-alloyed quenched and tempered steels.

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Section: Introductionmentioning

confidence: 99%

Tooth root bending fatigue strength of small-module sinter-hardened spur gears

Benedetti

Menapace

2017

Powder Metallurgy

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“…A gear may fail in various modes and these failure modes in the order of decreasing frequency can be divided into four groups: fatigue, impact, wear, and stress rupture. 1,26…”

Section: Physics-based Approachesmentioning

confidence: 99%

“…A gear may fail in various modes and these failure modes in the order of decreasing frequency can be divided into four groups: fatigue, impact, wear, and stress rupture. 1,26 a. Fatigue: The repeating cyclic stresses lower than ultimate tensile strength cause cracking of the surface, which results in fatigue failure.…”

Section: Physics-based Approachesmentioning

confidence: 99%

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A review on diagnostic and prognostic approaches for gears

Kundu

Darpe

Kulkarni

2020

Structural Health Monitoring

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Prognostics and health management has become a significant part of component life-cycle in modern industries. The prognostics and health management framework is implemented in the industries to identify the fault type, assess fault severity, and predict the future state or remaining useful life to optimize the maintenance activities. Three significant aspects of a prognostics and health management framework are diagnostics, prognostics, and decision making. This article presents a review of different types of diagnostic and prognostic approaches (i.e. physics-based, data-driven, and hybrid approaches) developed for the gears. The flow of information between diagnostics and prognostics parts of the framework is briefly discussed. Regarding the physics-based approaches, this article discusses different physics-based diagnostic and prognostic models developed for different types of gear failure modes such as crack, pitting, and wear. In the data-driven approaches, the article attempts to summarize the data processing techniques used for extracting fault-related information from the recorded raw vibration signal, health indicators developed for different kinds of gear failure modes, processing/selection approaches for best health indicators, fault classification, and fault prognostic models particularly developed for the gear. The article discusses how a hybrid approach can be developed by the integration of a data-driven diagnostics approach and a physics-based prognostics approach. Finally, uncertainty quantification of prognostic approaches, performance evaluation metrics, decision-making strategies, and future research and development perspectives are discussed. This article focuses on the diagnostic and prognostic approaches developed for gears, given the fact that these approaches for other components such as bearing and batteries are reviewed in the past.

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Systematic analysis of gear failures

Cited by 2 publications

References 0 publications

Tooth root bending fatigue strength of small-module sinter-hardened spur gears

Tooth root bending fatigue strength of small-module sinter-hardened spur gears

A review on diagnostic and prognostic approaches for gears

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