Location

Seattle, WA

Start Date

1-1-1996 12:00 AM

Description

In order to minimise the problems due to the acoustic impedance mismatch between solids and air, the non destructive testing of materials using ultrasonic transducers generally requires either contact transducers or immersion transducers to be used [1]. Air-coupled transducers however would be very advantageous for testing structures which must be not contaminated with couplant and also for all in-situ industrial applications. Although the propagation of ultrasonic waves from laser generation [2] involves air-coupling, the difficulties due to the experimental set-up of this technique and the financial investment it implies are two major disadvantages.

Volume

15A

Chapter

Chapter 4: NDE Sensors

Section

Ultrasonic Transducers (Air Coupled)

Pages

1083-1090

DOI

10.1007/978-1-4613-0383-1_141

Language

en

File Format

application/pdf

Share

COinS
 
Jan 1st, 12:00 AM

Air-Coupled Ultrasonic Transducers for the Detection of Defects in Plates

Seattle, WA

In order to minimise the problems due to the acoustic impedance mismatch between solids and air, the non destructive testing of materials using ultrasonic transducers generally requires either contact transducers or immersion transducers to be used [1]. Air-coupled transducers however would be very advantageous for testing structures which must be not contaminated with couplant and also for all in-situ industrial applications. Although the propagation of ultrasonic waves from laser generation [2] involves air-coupling, the difficulties due to the experimental set-up of this technique and the financial investment it implies are two major disadvantages.