New Method for the Statistical Evaluation of Constant Stress Amplitude Fatigue Test Results

SEDL / STP / STP511-EB / STP35402S

New Method for the Statistical Evaluation of Constant Stress Amplitude Fatigue-Test Results

Bastenaire, FA
Head, IRSID, Saint Germain-en-Laye,

Pages: 26 Published: Jan 1972

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Abstract

Using the experimental and theoretical results of previous research work, the author presents a probabilistic description of constant stress amplitude fatigue-test results. This description includes the S-N curves (or equiprobability of fracture curves), P-S curves (or stress-response curves), P-N curves (cumulative distribution functions of fatigue endurances), and accounts for the occurrence of runouts.

A method of estimation of the model coefficients which uses the information provided by all the specimens tested (broken or unbroken) is also presented. The application of this method is demonstrated through five examples for each of which several hundred test results are available.

Keywords:
fatigue (materials), probability theory, stress analysis, statistical analysis, mathematical model, distribution theory, S-N, diagrams, fatigue tests

Paper ID: STP35402S
Committee/Subcommittee: E08.01
DOI: 10.1520/STP35402S

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