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TECHNICAL PAPERS

Nondestructive Monitoring of Stress Relaxation in Welded Steel Plates

[+] Author and Article Information
Brent H. Chance, Don E. Bray

Department of Mechanical Engineering, Texas A&M University, College Station, TX 77841

J. Pressure Vessel Technol 124(3), 343-348 (Jul 26, 2002) (6 pages) doi:10.1115/1.1491581 History: Received May 02, 2002; Online July 26, 2002
Copyright © 2002 by ASME
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References

Figures

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Comparison of Moffat 4 data and Dieter model 2
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Comparison of present data and Dieter model 2
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Schematic of the sender-receiver probe assembly
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Time after the weld was cut and the average stress calculated from strain gages for all plates
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Normalized travel time and time after the weld was cut, probes A and B
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Normalized travel time and time after the weld was cut using only the hydraulic ram (probe A only).
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Strain gage indicated stress (upper plot, left axis) and normalized travel times (lower plot, right axis); probes A and B
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Stress relaxation curves for Moffat 4 (lower curve, right-hand axis) and present data (upper curve, left axis)
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Example plate (unwelded)
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Longitudinal section through midsection of bridge showing layout of probe interrogation distance, d, bridge length, l, and strain gage location

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