Date of Award


Publication Type

Master Thesis

Degree Name



Mechanical, Automotive, and Materials Engineering

First Advisor

North, W. P.,


Engineering, Mechanical.




A systematic inspection process was developed to locate and measure the sub surface damage of aging aircraft. This process included four steps. First, D sight technology was used to identify and locate pillowing deformations in an aircraft fuselage. Second, ultrasonic inspection was used to detect the degree of corrosion in a small localized deformation area. And then, LVDT contour measurement was conducted to determine the amplitude of pillowing deformation. Finally, finite element techniques in conjunction with mathematical method were used to evaluate the magnitude of the flexure stress superposed on the deformed skin. D sight has been proven as an effective method for large surface inspection. Ultrasonic detection showed the applicability of interlaminar corrosion identification. LVDT contour measurement facilitates quantitative interpretation of the effect of corrosion build-up. The FEA model was developed and was proved to be useful tool for the measurement of stress. This combination process provides a new approach in the evaluation an aging aircraft fuselage.Dept. of Mechanical, Automotive, and Materials Engineering. Paper copy at Leddy Library: Theses & Major Papers - Basement, West Bldg. / Call Number: Thesis1996 .G46. Source: Masters Abstracts International, Volume: 34-06, page: 2461. Adviser: W. P. North. Thesis (M.A.Sc.)--University of Windsor (Canada), 1996.