Inspection Development for T-37 Wing Spar Cap Lug

Abstract

The purpose of this project was to develop an eddy current nondestructive inspection technique and procedure for the fatigue-critical location on the lower cap lug fillet of the T-37 wing spar, and to develop and conduct an inspection reliability program to quantify the inspection capability. The inspection capability goal was to demonstrate a probability of detection of 90% with a 95% confidence level for 0.050 inch radius fatigue cracks in the critical region of the lug. A hand-operated mechanical probe manipulator was developed to ensure uniform inspection results. A set of test specimens with fatigue cracks was fabricated for the reliability study. All of the goals were met or exceeded in the program. Keywords: Electrical measurement; Nondestructive testing; Jet training aircraft; Wing spar lugs; Fatigue crack detection. (edc)

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Document Details

Document Type
Technical Report
Publication Date
Jun 30, 1989
Accession Number
ADA214826

Entities

People

  • Gary L. Burkhardt
  • Janet P. Buckingham
  • Jay L. Fisher
  • John H. Fitzgerald
  • Robert J. Dexter
  • Stephen N. Rowland Jr.

Organizations

  • Southwest Research Institute

Tags

Communities of Interest

  • Air Platforms
  • Human Systems

DTIC Thesaurus Topics

  • Accuracy
  • Air Force
  • Air Force Facilities
  • Aircrafts
  • Arm Bones
  • Assembly
  • Calibration
  • Detection
  • Eddy Currents
  • Fabrication
  • Geometry
  • Jet Training Aircraft
  • Machining
  • Manufacturing
  • Standards
  • Statistical Analysis
  • Video

Readers

  • Software Engineering
  • Structural Health Monitoring of Composite Structures.