Date of Award
Master of Science
Two of the major obstacles that limit the applications of the acoustic emission (AE) technique from being more acceptable for material characterization are: 1) difficulty of finding an efficient method to evaluate AE measurements when there are incomplete signals; and 2) poor repeatability and reproducibility of AE results. This thesis contains two manuscripts to address these problems. The first one is aimed at studying the consequence of incompleteness of AE signals, and our results suggest that the information entropy method is able to minimize inconsistent results caused by the incompleteness. The second one is aimed at studying the reproducibility of AE measurements, and the results suggest that our method is able to reduce the influence of irreproducible on the AE measurements. The reason that our method has such an advantage to deal with the problems mention above is summarized: the information entropy method can consider correlated relationships between the inherent multi-scale damage existing in a solid.
Dissertation or thesis originally submitted to the local University of Memphis Electronic Theses & dissertation (ETD) Repository.
Fan, Ming, "Two Novel Applications of the Information Entropy Method for Evaluation of Acoustic Emission Measurements" (2011). Electronic Theses and Dissertations. 345.