Acoustic Emission Based Surveillance System for Prediction of Stress Fractures
Abstract
Stress fractures of bone constitute the most serious musculoskeletal overuse injury during military training of male and female recruits. The hypothesis of our study is that the onset of stress fractures can be predicted by monitoring the evolution of microdamage activity using acoustic emissions. During the first year bone tissue was procured and amassed for specimen preparation. A sufficient number of donor tibias have been obtained and have been machined into test specimens. The test system was redesigned after the first year to improve the performance of both the mechanical testing as well as the acoustic emission detection of microdamage events. Different groups of beams will be tested to varying degrees of mechanical property degradation and relationship between the acoustic event parameters and fatigue failure will be studied. The third year activities focused on eliminating the artifactual emissions generated by sample motion over the loading supports which confound legitimate emissions from bone microcracking, and, characterization of the AE emission strength at the source and attenuation over time.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 2006
- Accession Number
- ADA575959
Entities
People
- Ozan Akkus
Organizations
- University of Toledo