Practical Application of Residual Stress Measurements on Maritime Vessels
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Authors
Whitley, Dixon T.
Subjects
X-ray diffraction
Aluminum
Ultra-sonic Impact Treatment (UIT)
Residual Stress
Aluminum
Ultra-sonic Impact Treatment (UIT)
Residual Stress
Advisors
Brewer, Luke
Date of Issue
2012-06
Date
12-Jun
Publisher
Monterey, California. Naval Postgraduate School
Language
Abstract
This thesis examines the practical application of portable X-ray diffraction to measure residual stresses on board active maritime platforms. These measurements will provide better understanding of structural failures in aluminum hulls and superstructures. The feasibility of this process was analyzed by comparing data from welded aluminum test samples using portable X-ray diffractometers from three different sources. The effects on residual stress from ultrasonic impact treatments were measured using laboratory X-ray diffraction. A comprehensive list of technical requirements for the purchase and deployment of a portable X-ray diffractometer was written. A case study for measurement of residual stresses on board a USN cruiser was developed.
Type
Thesis
Description
Series/Report No
Department
Mechanical Engineering