Skip to main content

Probabilistic Fatigue Damage Localization at Unknown Temperatures Using Guided Wave Methods

Abstract This research examines the current challenges of using Lamb wave interrogation methods to localize fatigue crack damage in a complex metallic structural component subjected to unknown temperatures. The goal of this work is to improve damage localization results for a structural component interrogated at an unknown temperature, by developing a probabilistic and reference-free framework for estimating Lamb wave velocities and the damage location. The methodology for damage localization at unknown temperatures includes the following key elements: i) a model that can describe the change in Lamb wave velocities with temperature; ii) the extension of an advanced time-frequency based signal processing technique for enhanced time-of-flight feature ... (more)
Created Date 2013
Contributor Hensberry, Kevin Michael (Author) / Chattopadhyay, Aditi (Advisor) / Liu, Yongming (Committee member) / Papandreou-Suppappola, Antonia (Committee member) / Arizona State University (Publisher)
Subject Aerospace engineering / Engineering / Mechanical engineering
Type Masters Thesis
Extent 90 pages
Language English
Reuse Permissions All Rights Reserved
Note M.S. Aerospace Engineering 2013
Collaborating Institutions Graduate College / ASU Library
Additional Formats MODS / OAI Dublin Core / RIS

  Full Text
2.5 MB application/pdf
Download Count: 1133

Description Dissertation/Thesis