Citation

Das SK, Mukhopadhyay NK, Kumar BR, Bhattacharya DK. Eng. Failure Anal. 2007; 14(1): 158-163.

Copyright

(Copyright © 2007, European Structural Integrity Society, Publisher Elsevier Publishing)

DOI

unavailable

PMID

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Abstract

Investigation on the premature failure of suspension coil spring of a passenger car, which failed within few months after being put into service, has been carried out. Besides visual examination, other experimental techniques used for the investigation were (a) microstructural analysis and fractography by scanning electron microscopy (SEM), (b) inclusion rating by optical microscopy, (c) hardness testing, (d) residual stress measurement by X-Ray diffraction (XRD) and (e) instrumental chemical analysis. Inherent material defect in association with deficient processing led to the failure of the spring.