Residual Stress Measurements with Laser Speckle Correlation Interferometry and Local Heat Treating

Conference · Thu Jan 06 00:00:00 EST 1994

OSTI ID:10116579

Pechersky, M J; Miller, R F ^[1]; Vikram, C S ^[2]

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1. Westinghouse Savannah River Company, SC (United States)
2. University of Alabama, AL (United States)

A new experimental technique has been devised to measure residual stresses in ductile materials with a combination of laser speckle pattern interferometry and spot heating. The speckle pattern interferometer measures in-plane deformations while the heating provides for very localized stress relief. The residual stresses are determined by the amount of strain that is measured subsequent to the heating and cool-down of the region being interrogated. A simple lumped parameter model is presented to provide a description of the method. This description is followed by presentations of the results of finite element analyses and experimental results with uniaxial test specimens. Excellent agreement between the experiments and the computer analyses were obtained.

• Research Organization: Westinghouse Savannah River Co., Aiken, SC (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC09-89SR18035
• OSTI ID: 10116579
• Report Number(s): WSRC-MS-94-0632; CONF-950226-3; ON: DE95060082; TRN: 94T00075
• Resource Relation: Conference: SPIE `95: SPIE conference on optics, electro-optics, and laser application in science, engineering and medicine,San Jose, CA (United States),5-14 Feb 1995; Other Information: PBD: 6 Jan 1994
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
42 ENGINEERING
47 OTHER INSTRUMENTATION
RESIDUAL STRESSES
INTERFEROMETRY
MATHEMATICAL MODELS
ANNEALING
FEASIBILITY STUDIES
FINITE ELEMENT METHOD
LASER-RADIATION HEATING
NUCLEAR POWER PLANTS
AIRCRAFT
MATERIALS TESTING
220200
420500
440600
COMPONENTS AND ACCESSORIES
OPTICAL INSTRUMENTATION