Accession Number : ADA016925

Title :   Investigation of Accelerated Life Prediction Techniques.

Descriptive Note : Final rept. 1 Mar 74-28 Feb 75,

Corporate Author : OHIO STATE UNIV COLUMBUS DEPT OF MECHANICAL ENGINEERING

Personal Author(s) : Collins,Jack A. ; Hagan,Ben Tarver , Jr

Report Date : OCT 1975

Pagination or Media Count : 59

Abstract : The objectives of the work reported were to define potentially useful failure prediction models for the wear and fretting-wear modes of failure, to define the parameters of primary importance, to incorporate the concept of accelerated testing both in the prediction models and in the design of a testing program, and to design special testing machines capable of both real-time and accelerated-wear and fretting-wear tests using a UH-1H helicopter cyclic servo support bearing as the test specimen. This particular component was selected because it was a relatively simple example of an actual component in which both wear and fretting-wear failure modes had been regularly observed in the field.

Descriptors :   *HELICOPTERS, *LIFE TESTS, *ACCELERATED TESTING, FRETTING, WEAR, FAILURE(MECHANICS), PREDICTIONS, DAMAGE ASSESSMENT

Subject Categories : Helicopters
      Economics and Cost Analysis

Distribution Statement : APPROVED FOR PUBLIC RELEASE