Acoustoelasticity using longitudinal waves for residual stress evaluation

Conference · Fri Jan 01 04:00:00 EST 1988

OSTI ID:6548535

Dike, J J; Johnson, G C; Flower, E C

Residual stresses play an important role in the behavior of structures during machining and under load. Knowledge of these residual stress states allows better and more efficient use of the structures, as well as more accurate predictions of their behavior. In this paper, a new method for nondestructively evaluating complete states of plane residual stress is presented. The basic analytical and experimental procedures are reviewed, and results of estimated residual stresses are compared with numerical predictions. Several methods are available for determining residual stresses. Nondestructive techniques include x-ray and neutron diffraction studies that measure residual strains through determination of crystal lattice spacing. Here we examine the application of a nondestructive technique called acoustoelasticity which employs ultrasonic waves in the evaluation of residual stress states. 9 refs., 3 figs.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6548535
• Report Number(s): UCRL-100040; CONF-880760-10; ON: DE89006154
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500* -- Photochemistry
42 ENGINEERING
420200 -- Engineering-- Facilities
Equipment
& Techniques
ACOUSTICS
ELASTICITY
ENGINEERING
EQUATIONS
FINITE ELEMENT METHOD
MATERIALS TESTING
MECHANICAL ENGINEERING
MECHANICAL PROPERTIES
NONDESTRUCTIVE TESTING
NUMERICAL SOLUTION
RESIDUAL STRESSES
SOUND WAVES
STRESSES
TENSILE PROPERTIES
TESTING
ULTRASONIC WAVES