Analysis of main undercarriage torque link bolts of an aircraft

Sujata, M and Madan, M and Suresh Kumar, M and Venkataswamy, MA and Bhaumik, SK (2006) Analysis of main undercarriage torque link bolts of an aircraft. Project Report. National Aerospace Laboratories, Bangalore.

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Abstract

Failed bolts of main undercarriage torque link of an aircraft were analyzed. Examination did not reveal cracks in any of the bolts. The bolt material was found to conform to BS-4S-99 specification. The hardness was measured to be about RC42. The bolt material was found to have a non-uniform and banded structure. Also, large non-metallic inclusions were found present in the material. In view of the above findings, it is recommended that the bolts manufactured from this batch of material be rejected and/or withdrawn from service immediately.

Item Type: Proj.Doc/Technical Report (Project Report)
Uncontrolled Keywords: Aircraft;undercarriage torque link;bolts;non-uniform microstructure;inclusions
Subjects: AERONAUTICS > Aeronautics (General)
CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
Division/Department: Materials Science Division, Materials Science Division, Materials Science Division, Materials Science Division, Materials Science Division
Depositing User: Mrs Manoranjitha M D
Date Deposited: 11 Aug 2011 15:59
Last Modified: 11 Aug 2011 15:59
URI: http://nal-ir.nal.res.in/id/eprint/9856

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