SEDL / STP / STP624-EB / STP27033S

Penetrant Inspection Standards

Packman, PF
Professor of engineering materials and graduate student, Vanderbilt University, Nashville, Tenn.

Hardy, G
Project engineer, Air Force Materials Laboratory, Ohio

Malpani, JK
Professor of engineering materials and graduate student, Vanderbilt University, Nashville, Tenn.

Pages: 17    Published: Jan 1977

Download this paper for $25 PDF (360K)          View License Agreement
Abstract

The purpose of this paper is to review some of the quantitative techniques that have been used for the evaluation of penetrant systems and to present an analysis technique based on analysis of variance (ANOVA) that appears to have a potential for rating penetrants.

The paper covers five areas: quantitative penetrant methods, two-fold congruency evaluation, the limitations on the reuse of the specimens, the influence of threshold visibility on evaluation of penetrants, and crack line intersection counting and evaluation of the crack line intersection data by ANOVA to evaluate the effects of primary and secondary influencing variables.