THERMOELASTIC RESPONSE OF AN ALUMINUM BOX BEAM
Abstract
To supplement present information on the thermo elastic response of basic aircraft structures, an aluminum box beam instrumented for temperature and strain was exposed during Shot 12 of Opera tion Teapot. Because blast effects were undesir able, the test specimen was exposed only to the thermal phase by placing it in a blast shield. To increase its absorptance, the front face of the box beam was blackened by anodization. Re sponse data consisted of 18 temperature and 14 strain measurements. Radiant exposure and irra diance were measured behind the glass panel inside the blast shield to permit correlation of box-beam response with thermal input. The max imum temperature rise of the box beam front face was 188 F. This is slightly lower than would have been expected, considering the magnitude of the input and the calculated absorptance of the surface. It has been concluded that either the absorptance calculation was in error or that the absorptance was modified by a slight amount of dust which had settled on the surface. All tem perature rises were normal and no anomalies were encountered. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 12, 1958
- Accession Number
- AD0341059
Entities
People
- W.j. Hovey
Organizations
- University of Dayton