1971-02-01

On Fatigue Testing of Passenger Car Body Construction 710261

Fatigue tests on a body in white have been made with torsional load and compared with previous results for assessments, where it was difficult to agree with proving ground tests in evaluating the life.
Modifying the above mentioned fault, a programmed fatigue test method on the body in white is presented in this paper.
The newly developed programmed fatigue test method is the simultaneous loading of the bouncing and torsional modes to a body in while by an electrohydraulic fatigue testing machine in accordance with the programmed sprung mass accelerations.
Applying this method, the comparatively accurate assessment of proving ground test was made at the condition of the body in white, and the development period for body construction was shortened.

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