Reflection by Defective Diffusion Bonds
Abstract
The reflection of ultrasonic wave motion by planar defect distributions is investigated in this paper, with a view towards a method to detect and characterize bond-plane defects and with an ultimate objective of providing information on the bond strength of metal-to-metal bonds. The paper is primarily concerned with an approximate approach to analyze reflection by cavities and cracks which are distributed in a bond plane. The results show some of the characteristic features of reflection with variation of such parameters as angle of incidence, frequency, defect size, defect shape and defect spacing. Metal to metal bonds by the diffusion welding process are becoming more frequently used for the fabrication of complicated parts, such as integrally bladed compressor and turbine rotors in gas turbine engines. Diffusion bonds may, however, have three kinds of defects: volumetric defects (voids, inclusions), crack-like defects, and crystalline grains.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 15, 1989
- Accession Number
- ADA212995
Entities
People
- Jan D. Achenbach
- Yan Xu
Organizations
- Northwestern University