Nondestructive Inspection (NDI) for Diffusion Bonded Components
Final rept. 9 May 2001-6 Aug 2003
NVE CORP EDEN PRAIRIE MN
Pagination or Media Count:
This Phase II SBIR developed prototype eddy-current probe systems using Giant Magnetoresistance GMR and Spin Dependent Tunneling SDT sensors from the proof-of-concept probes developed in Phase I. These probes were designed for specific NDI problems. Samples were tested that emphasized the detection of multi-point failure in aircraft skins using an array of sensors to scan multiple rows of rivets and the detection of interlayer corrosion in multilayer aircraft skins. Laptop computer-based systems were developed using Labview software to display the results of surface scans. Both GMR and SDT sensors were incorporated in eddy-current probes including X-Y sensors with on-chip excitation coils, new shape-biased SDT sensors with reduced power consumption, and GMR sensor arrays with up to 16 elements.
- Computer Programming and Software
- Electricity and Magnetism