The use of coherent optics in combination with numerical analysis and acoustic emission to characterize stress-corrosion cracking

Abstract

In this work a supplement-to corrosion research techniques has been implemented which is based upon coherent optical methods. Specifically, real-time holographic interferometry (RTHI) and laser speckle photography (LSP) have been explored as a means of characterizing stress corrosion cracking (SCC) initiation and propagation behavior in ex-brass. The advantages of these methods include high sensitivity and the ability to conduct testing in-situ in a non-invasive manner. In addition, measured in-plane displacement data taken from LSP has been used to provide input data for finite element analysis (FEA) programs. Coupling experimental data with numerical methods in this manner has been shown to enhance accuracy over numerical techniques alone while providing full field stress information in the region of interest. Acoustic emission (AE) testing has also been conducted simultaneously to complement and correlate with RTHI in determining the initiation time.

Notes

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Graduation Date

1992

Semester

Spring

Advisor

Desai, Vimal H.

Degree

Master of Science (M.S.)

College

College of Engineering

Department

Mechanical and Aerospace Engineering

Format

PDF

Pages

124 p.

Language

English

Length of Campus-only Access

None

Access Status

Masters Thesis (Open Access)

Identifier

DP0029860

Subjects

Dissertations, Academic -- Engineering; Engineering -- Dissertations, Academic

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