Analysis of fractured torque link and dowel pins of main undercarriage of an aircraft

Bhaumik, SK (2003) Analysis of fractured torque link and dowel pins of main undercarriage of an aircraft. Project Report. National Aerospace Laboratories, Bangalore.

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Abstract

A fractured torque link lower sub-assembly and six fractured dowel pins belonging to main under-carriage of an aircraft were sent to the laboratory for fractographic analysis. Examination revealed that the eye-end of the torque link has opened up by tensile overload while all the dowel bolts got sheared off. There were no evidences of delayed failure like fatigue or stress corrosion cracking. It appears most probable that the main under-carriage has extended beyond the limit resulting in shearing off of all the dowel pins. This might have resulted in excessive load on the torque link lower sub-assembly causing it to fracture.

Item Type: Proj.Doc/Technical Report (Project Report)
Uncontrolled Keywords: Aircraft;torque link;dowel pins;main undercarriage;overload failure
Subjects: AERONAUTICS > Aeronautics (General)
CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
Division/Department: Materials Science Division
Depositing User: Mrs Manoranjitha M D
Date Deposited: 08 Jul 2011 16:30
Last Modified: 08 Jul 2011 16:30
URI: http://nal-ir.nal.res.in/id/eprint/9320

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