Failure analysis of steel wheel

Suresh Kumar, M and Madan, M and Venkataswamy, MA and Sujata, M and Bhaumik, SK (2006) Failure analysis of steel wheel. Project Report. National Aerospace Laboratories, Bangalore, India.

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The wheel rim referred to the laboratory had developed a crack at the fillet region of the outer rim flange. The fractographic features were obliterated due to post failure corrosion and hence, the mode of fracture could not be identified unambiguously. However, gross fractographic features and the failure pattern suggest that wheel has failed by fatigue. Microstructural study revealed linear defects entrapped with iron oxide at the fillet of the wheel rim. These defects were identified to be laps/folds in the material which appeared to have developed during flange rolling operation. It is believed that these defects had acted as stress raisers for premature fatigue crack initiation resulting in failure of the wheel rim. A detailed analysis is presented in this report.

Item Type: Monograph (Project Report)
Uncontrolled Keywords: Steel wheel;Defects;Lap/fold;Fatigue
Subjects: AERONAUTICS > Aeronautics (General)
CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
Depositing User: Ms. Alphones Mary
Date Deposited: 29 Jul 2011 06:43
Last Modified: 29 Jul 2011 06:43

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