Conference proceeding
Monitoring acoustic emission during quasi-static loading/unloading cycles of filament-wound graphite/epoxy laminate coupons
International Symposium on Acoustic Emission from Reinforced Plastics, 1st, San Francisco, CA; United States; 19-21 July 1983
01 Jul 1983
Abstract
In the present assessment of the potential for damage severity determination in composites through acoustic emission monitoring during proof loading, graphite/epoxy laminates were loaded to a predetermined level and then unloaded cyclically, with incremental increases of the load magnitude up to the point of failure. Attention is given to the validity of the application of the Kaiser (1950) and 'felicity' effects to the assessment of the 'felicity ratio' measure for damage severity, material quality, and loading history. The tests conducted indicate that, during loading, emission begins ahead of the previously applied load level. This is at variance with the Kaiser effect. Because the felicity ratio of poor quality material drops rapidly with increasing stress, it is a suitable indicator of damage severity and/or material quality and therefore represents a justifiable basis for an acceptance/rejection criterion.
Metrics
12 Record Views
Details
- Title
- Monitoring acoustic emission during quasi-static loading/unloading cycles of filament-wound graphite/epoxy laminate coupons
- Creators
- J AwerbuchM GormanM Madhukar
- Publication Details
- International Symposium on Acoustic Emission from Reinforced Plastics, 1st, San Francisco, CA; United States; 19-21 July 1983
- Conference
- International Symposium on Acoustic Emission from Reinforced Plastics, 1st (San Francisco, California, United States, 19 Jul 1983 - 21 Jul 1983)
- Resource Type
- Conference proceeding
- Language
- English
- Academic Unit
- Mechanical Engineering and Mechanics
- Identifiers
- 991019184097904721