Accession Number:

AD0271567

Title:

A STUDY OF RIGID POLYURETHANE FOAM AS A STRUCTURAL MATERIAL FOR RADOMES FOR LINCOLN LABORATORY

Descriptive Note:

Corporate Author:

MASSACHUSETTS INST OF TECH CAMBRIDGE PLASTICS RESEARCH LAB

Personal Author(s):

Report Date:

1961-11-09

Pagination or Media Count:

1.0

Abstract:

A study of rigid urethane foam was performed to determine its suitability as a structural material for radomes. The material was not homogeneous in density and in mechanical properties. Panels manufactured from the same material, and by the same process, were not alike. The material was ductile to a stress concentration of 2.5 at higher levels of stress concentration, the material may exibit brittle behavior. Tests on large samples emphasized the erratic nature of the material. Sound weldments were obtained and the factors important to weldment integrity were established. A design of an efficient base connection was developed. Refinements in this design should lead to an optimum solution in function and in cost. Finally, the shrinkage behavior of weldments was explored a promising candidate material was found. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE