Accession Number:

ADA218680

Title:

Nondestructive Measurement of Residual Stresses in Aircraft Transparencies

Descriptive Note:

Final interim rept. Dec 1984-Feb 1987

Corporate Author:

DAYTON UNIV OH RESEARCH INST

Personal Author(s):

Report Date:

1989-11-01

Pagination or Media Count:

109.0

Abstract:

This program was conducted to 1 Design, fabricate, and set up a photoelastic test apparatus capable of measuring residual stresses in aircraft transparencies 2 Evaluate the accuracy of the scattered-light photoelastic technique by conducting scattered-light photoelastic experiments on four-point bending polycarbonate specimens having known analytical solutions and other experimental solutions 3 Establish a scattered-light photoelastic experimental procedure for monolithic polycarbonate F-16 transparencies by measuring residual stresses at a typical station on the transparency 4 Evaluate the scattered- light photoelastic properties of acrylic plastic material and 5 Determine the feasibility of using acoustic wave ultrasonic techniques to determine residual stresses in transparencies. Keywords Optical measurement, Acoustic measurement, Residual stress, Scattered-light photoelasticity, Jet fighter transparency, Surface wave, Ultrasonic tests.

Subject Categories:

  • Attack and Fighter Aircraft
  • Test Facilities, Equipment and Methods

Distribution Statement:

APPROVED FOR PUBLIC RELEASE