Accession Number:

ADA496674

Title:

Advanced Nondestructive Evaluation (NDE) Sensor Modeling For Multisite Inspection

Descriptive Note:

Final rept. 10 Feb 2006-19 Oct 2008

Corporate Author:

BOEING INFORMATION SPACE AND DEFENSE SYSTEMS SEATTLE WA

Report Date:

2008-10-01

Pagination or Media Count:

167.0

Abstract:

The Advanced Nondestructive Evaluation NDE Sensor Modeling for Multisite Inspection program has developed finite element models FEM of electromagnetic NDE for optimizing the inspection of aging aircraft structure. The program found excellent correlation between magnetic field strengths predicted by FEM analysis and experimental values in fastened airframe structure configurations. Applying the FEM analysis to magnetoresistive MR sensors inspection problems then provided useful insights into the many parameter effects associated with MR sensors, leading to optimized scanning predictions. The modeling and experimental analysis of the sensitivity of MR sensing for second layer cracks in thick 0.16 inch top layer structure demonstrated improvements in signal to noise by over an order of magnitude compared the currently applied conventional eddy current method. This result provided a quantitative evaluation of the MR sensor inspection method and validated the significant improvements in inspection capability that can be achieved in the MR mobile automated ultrasonic scanner MAUS implementation program.

Subject Categories:

  • Operations Research
  • Magnetic and Electric Field Detection and Detectors
  • Electricity and Magnetism

Distribution Statement:

APPROVED FOR PUBLIC RELEASE