Location

Snowbird, UT, USA

Start Date

1-1-1999 12:00 AM

Description

In nondestructive inspection of a part, the accept / reject decision is typically based on the comparison of the measured variable to a threshold value. In a practical test situation various factors introduce randomness and uncertainty in the measurement, thus affecting the accept / reject decision. The concept of probability of detection offers a measure of the capability of nondestructive evaluation methods to detect defects, in the presence of different sources of uncertainties. For instance, it has been previously established [1], that mechanical stress introduces variations in the magnetic flux leakage measurements. Residual stress affects the magnetic properties of ferromagnetic materials and is one of the factor s that can potentially affect the detectability of defects.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

18B

Chapter

Chapter 8: Process Control, Reliability, and Training

Section

NDE Reliability Calibration

Pages

2319-2327

DOI

10.1007/978-1-4615-4791-4_297

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Effects of Stress on the Probability of Detection for Magnetic Flux Leakage Inspection

Snowbird, UT, USA

In nondestructive inspection of a part, the accept / reject decision is typically based on the comparison of the measured variable to a threshold value. In a practical test situation various factors introduce randomness and uncertainty in the measurement, thus affecting the accept / reject decision. The concept of probability of detection offers a measure of the capability of nondestructive evaluation methods to detect defects, in the presence of different sources of uncertainties. For instance, it has been previously established [1], that mechanical stress introduces variations in the magnetic flux leakage measurements. Residual stress affects the magnetic properties of ferromagnetic materials and is one of the factor s that can potentially affect the detectability of defects.