The Effect of Stress Fields on the Ultrasonic Energy Reflected from Discontinuities in Solids
Quarterly progress rept. no. 1, 28 Oct 1970-28 Jan 1971
SYRACUSE UNIV RESEARCH CORP NY MATERIALS SCIENCE LAB
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The challenge to the field of nondestructive testing NDT is to develop procedures capable of resolving defects of critical size and to accurately define defect geometry. The NDT research program now in progress under the contract is a modification of the ultrasonic pulse-echo method of flaw detection. The approach is based on the principal that when a stress field is applied to a discontinuity defect or flaw in a solid, a change in the geometry of the discontinuity is effected. The change in geometry can result in corresponding changes in amplitude andor pattern of ultrasonic energy reflected from the discontinuity. It is reasonable to expect that the reflected energy response should be relatable to specific distinguishing features of a given type of discontinuity.
- Test Facilities, Equipment and Methods