Failure of Tie Rod of Aircraft Towing Tractor

摘要

The tie rod of an aircraft towing tractor failed during trial runs. The tie rod had been circumferentially welded on to a bracket. Microscopic examination confirmed that the failureudwas brittle in nature and due to poor quality weld. With a modification of the weld design, the tie rod has withstood proof loading and there was no cracking after proof loading.