Assessment of Fatigue Damage of Adhesively Bonded Composite -Metal Joints by Acousto-Ultrasonics and Acoustic Emission
Description
A correlation between fatigue damage and acousto-ultrasonic (AU) parameters has been obtained from signals acquired during fatigue loading of the single-lap joints of a carbon-fiber reinforced plastic (CFRP) laminates and A16061 plate. The correlation showed an analogy to those representing the stiffness reduction (E/E0) of polymer matrix composites by the accumulation of fatigue damage. This has been attributed to the transmission characteristics of acoustic wave energy through bonded joints with delamination-type defects and their influence on the change of spectral content of AU signals. Another correlation between fatigue cycles and the spectral magnitude of acoustic emission (AE) signals has also been found during the final stage of fatigue loading. Both AU and AE can be applied almost in real-time to monitor the evolution of damage during fatigue loading
Additional details
Publishing Information
- Journal Title
- Journal of the Korean Society for Nondestructive Testing
- Journal Volume
- 21
- Journal Issue
- 4
- Series
- 14 refs, 8 figs
- Journal Page Range
- p. 425-433
- ISSN
- 1225-7842
INIS
- Country of Publication
- Korea, Republic of
- Country of Input or Organization
- Korea, Republic of
- INIS RN
- 42054463
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- ACOUSTIC EMISSION TESTING; CORRELATIONS; DAMAGE; FATIGUE; FLEXIBILITY; POLYMERS; SIGNALS
- Descriptors DEC
- ACOUSTIC TESTING; MATERIALS TESTING; MECHANICAL PROPERTIES; NONDESTRUCTIVE TESTING; TENSILE PROPERTIES; TESTING