Effect of processing and microstructure on ultrasonic response of aerospace alloys: An overview

Abstract

Ultrasonic testing is the primary nondestructive testing technique employed for examination of internal soundness in bulk materials. It also indicates materials condition and microstructure, and is influenced by these factors. Correlations among these shall help in establishing better understanding towards selection and application of materials for aerospace systems. This paper reviews the correlations between ultrasonic response and microstructure of different aerospace materials. It also includes the changes in ultrasonic response due to change in processing condition of material. It is noted that ultrasonic wave velocity and attenuation are modified by change in thermomechanical processing through change in microstructure.