Abstract
In the conventional nondestructive inspection method using air-coupled ultrasound, the transmission method using two ultrasonic probes is widely used. Although the air-coupled ultrasonic vertical reflection method using a single probe is the simplest inspection mode, it has been considered difficult to realize because of the large mismatch of acoustic impedance between air and object. In this study, we aim to develop an air-coupled ultrasonic vertical reflection method, and to achieve this, we examine the use of chirp signals with various window functions and pulse compression technique. In this study, we verify the effectiveness of using the pulse compression technique and investigate suitable window functions for the air-coupled ultrasonic vertical reflection method. Then, the feasibility of applying the suggested method to a solid object is examined through experiments.
How to Cite:
Suzuki, K., Ishikawa, M. & Nishino, H., (2019) “Feasibility study of air-coupled ultrasonic vertical reflection method using a single probe”, Review of Progress in Quantitative Nondestructive Evaluation .
Downloads:
Download PDF