Metallurgical Failure Analysis and Improved Core Hardness to Enhance Crushing Strength, Wear Resistance and Fatigue Strength of Chain Bush

Gear is a reliable part of power transmission. This article presents a metallurgical failure analysis of a failed gear used in automobile engine coolant pumps. In gear, the soft microstructure of pearlite and ferrite is witnessed in metallographic analysis. Significant wear is perceived in gear teeth, and significant deformation is observed in the keyway. The crack initiated from the corner radius of the keyway and propagated towards to the root of the teeth, which is evidence of the failure due to fatigue. Recommendations are given to improve the fatigue strength of gear.

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Fatigue Failure Analysis of a Gear in Automobile Engine Coolant Pump

Krishnasamy¹,

Subbulekshmi

Deepa

et al. 2022

Advances in Materials Science and Engineering

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Analysis of the Influence of Wear Crack of Chaindrive on Stress in Its Elements

Górny

2023

Tribologia

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Pin joints of chain transmissions are areas of stress concentration, which can lead to the formation of cracks inthe links. This process often contributes to a critical weakening of the cross-section in the lugs of these links,which results in its damage and may lead to the failure of the entire drive. The article analyses the influenceof exemplary wear damages of chain transmission elements on the magnitude of stress concentration. Theimpact of the load, crack size, and its location on the level of stress increase was assessed. The location ofcracks in the lugs of chain plates transmission links which lead to the most significant increase in stress levelwas identified.

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Metallurgical Failure Analysis and Improved Core Hardness to Enhance Crushing Strength, Wear Resistance and Fatigue Strength of Chain Bush

Cited by 2 publications

References 19 publications

Fatigue Failure Analysis of a Gear in Automobile Engine Coolant Pump

Fatigue Failure Analysis of a Gear in Automobile Engine Coolant Pump

Analysis of the Influence of Wear Crack of Chaindrive on Stress in Its Elements

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