Investigation Team: Bill Shih, Jerry Fitzpatrick, PRI Inc., Lalita Udpa, Michigan State University

Industry Partners: Northrop-Grumman Synoptics

Objectives:

  • To significantly enhance the crack detection sensitivity of Magneto-Optic Imaging (MOI)-based systems through improvements to sensor design and performance leading to expanded use of MOI in the nondestructive inspection of aging aircraft systems
  • To improve the performance of MOI for subsurface crack and corrosion detection in applications of interest to FAA and the industry

Approach:

  • Evaluate different chemical compositions for the out-of-plane sensors and methods of film growth

  • Perform electromagnetic (finite-element) calculations, designed to guide the sensor development and improvement process

  • Fabricate prototype sensors based on empirical studies and calculations

  • Evaluate improvements from new sensors and demonstrate I

Detection of smaller defects such as corrosion and fatigue cracks in multilayer aircraft structures could be improved with the development of new sensor materials used in Magneto-Optic Imaging.

Products:

  • Demonstration of improved MOI sensor


 

Copyright © 2002

For more information about CASR please contact:
Lisa Brasche
Iowa State University
casr@cnde.iastate.edu