Project Title:

A Quantitative NDE Method for Ceramic Matrix Composites Using Broadband AE/AU Waveform Analysis

94-1	05.04	7559		

A Quantitative NDE Method for Ceramic Matrix Composites Using 
Broadband AE/AU Waveform Analysis

Abstract:

Digital Wave proposes to develop an innovative system for 
nondestructive evaluation of ceramic matrix composite (CMC) 
materials. The system would combine passive, broadband measurement 
of acoustic emission (AE) waveforms with active plate wave, or 
acousto-ultrasonic (AU), measurements. The broadband wave based AE 
measurements would be used to identify and characterize specific 
damage mechanisms. The broadband AU measurements would allow for 
material properties (stiffnesses) evaluation as a function of 
strain and temperature. This approach would enable a quantitative 
NDE technique that could be easily scaled up from laboratory 
coupons to full scale structures.

Commercial hardware could be developed for quantitative NDE of CMC 
materials. Instruments for NDE during manufacture, for quality 
assurance (QA), and while in service would enable CMC materials to 
be used for many practical applications.

Key Words

Digital Wave Corporation	
14 Inverness Drive East
Building B, Suite 120
Englewood, CO 80112