Moire Optical Temperature Measurements in Thermally Irradiated Aircraft Windshield Materials.
AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OHIO SCHOOL OF ENGINEERING
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The feasibility of using a moire optical system to measure temperature distribution in thermally irradiated aircraft windshield material is shown. The moire system is based on schlieren apparatus which is modified to obtain quantitative information by installing moire gratings in the light path. A sample of plexiglass material was irradiated by a bank of ten, 6000 watt infrared lamps. Photographs documented the resulting deflections in the moire interference patterns. Surface temperatures were determined by using a previously developed moire method for air boundary layers. The technique is developed for determining sample internal temperatures from moire deflections, and two internal temperature distributions are presented.