Accession Number:

ADA426287

Title:

Nondestructive Inspection (NDI) for Diffusion Bonded Components

Descriptive Note:

Final rept. 9 May 2001-6 Aug 2003

Corporate Author:

NVE CORP EDEN PRAIRIE MN

Personal Author(s):

Report Date:

2003-08-01

Pagination or Media Count:

58.0

Abstract:

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.

Subject Categories:

  • Computer Programming and Software
  • Electricity and Magnetism

Distribution Statement:

APPROVED FOR PUBLIC RELEASE