Analysis of failed motor shaft of an air cooler

Bhaskaran, TA and Venkataswamy, MA and Parameswara, MA and Sujata, M and Keshab, Barai and Bhaumik, SK (2003) Analysis of failed motor shaft of an air cooler. Project Report. National Aerospace Laboratories, Bangalore.

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A fractured motor shaft of an air cooler was sent to the laboratory to analyse the cause of failure. Investigation revealed that the shaft has failed by fatigue. Multiple fatigue cracks have originated at the fillet of the change of section and progressed over about 90% of the shaft cross section before giving way to torsional overload failure. The fatigue crack initiation appears to be due to stress concentrations arising from the sharp edges of the undercut at the fillet of the change of section. The problem appears to have further aggravated due to superimposed bending stresses on the shaft.

Item Type: Monograph (Project Report)
Uncontrolled Keywords: Shaft;fatigue;stress concentrations
Subjects: AERONAUTICS > Aeronautics (General)
CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
Depositing User: Mrs Manoranjitha M D
Date Deposited: 29 Jul 2011 06:25
Last Modified: 29 Jul 2011 06:25

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