SYMPOSIA PAPER Published: 01 January 1992

Acoustic Emission Monitoring of Fatigue in Titanium Aluminide XD Composite


The feasibility of acoustic emission (AE) monitoring of fatigue crack growth in titanium aluminide XD composites was investigated. Under tension-tension and compression-compression loading, the total accumulated number of AE events corresponds closely to the fatigue crack growth. The majority of the AE occurs near the maximum load during uploading. In the tension fatigue test, the AE is controlled by the stress intensity factor, and its relationship is given by the equations An=(1.1×103)·(Kmax)6.3 An=(1.1×103)·(ΔK)6.3 where An is the total number of AE events, Kmax the maximum stress intensity factor, and ΔK the range of stress intensity factor.

Author Information

Lee, EU
Naval Air Warfare Center, Warminster, PA
Granata, DM
Naval Air Warfare Center, Warminster, PA
Scott, WR
Naval Air Warfare Center, Warminster, PA
Price: $25.00
Contact Sales
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Developed by Committee: E08
Pages: 293–311
DOI: 10.1520/STP15354S
ISBN-EB: 978-0-8031-5212-0
ISBN-13: 978-0-8031-1444-9