Accession Number:

ADA023185

Title:

Measurement of Stress Corrosion Cracks in Aluminum Alloy DCB Specimens Using an Ultrasonic Pulse-Echo Technique.

Descriptive Note:

Final technical rept. Jan-Jul 75,

Corporate Author:

AIR FORCE MATERIALS LAB WRIGHT-PATTERSON AFB OHIO

Personal Author(s):

Report Date:

1976-01-01

Pagination or Media Count:

42.0

Abstract:

This program evaluated a non-destructive ultrasonic method for monitoring crack growth rate. Aluminum alloy test specimens were used to calibrate the equipment and to assess the measurement accuracy and reproducibility. Together, the optical and ultrasonic techniques could lead to a more accurate assessment of stress corrosion crack growth in aerospace alloys through obtaining a truer picture of interior crack front shapes.

Subject Categories:

  • Aircraft
  • Properties of Metals and Alloys
  • Test Facilities, Equipment and Methods

Distribution Statement:

APPROVED FOR PUBLIC RELEASE