RESEARCH PAPERS: Reliability, Stress Analysis, and Failure Prevention

A New Approach for the Identification of a Regression Locus for Estimating CDF-Failure Equations on Rectified Plots

[+] Author and Article Information
C. R. Mischke

Department of Mechanical Engineering, Iowa State University, Ames, IA 50011

J. Vib., Acoust., Stress, and Reliab 109(1), 103-112 (Jan 01, 1987) (10 pages) doi:10.1115/1.3269382 History: Received September 02, 1986; Online November 23, 2009


In estimating the cumulative density function of data, investigators selectively transform the data and their order statistics in order to achieve rectification of the data string. Ordinary least-squares regression procedures no longer apply because of the transformations. Investigators are often seeking a fifty-percent (median) locus, which least-squares methods do not ordinarily discover. A weighted least-squares regression procedure is presented that will establish an estimate of the mean CDF line and through appropriate rotation, provide an estimate of the median CDF line. Examples from common distributions follow a general development.

Copyright © 1987 by ASME
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