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Accession Number:
ADB806011
Title:
Static and Dynamic Creep Properties of Laminated Plastic for Various Types of Stress
Corporate Author:
PENNSYLVANIA STATE UNIV UNIVERSITY PARK
Report Date:
1947-02-01
Abstract:
Creep tests of five laminated plastics were made in this investigation to determine the relative creep properties of these materials when subjected to various types of static and dynamic stresses. Creep deformations were measured to determine the variation of these deformations with stress. For each type of test, the stress values investigated covered the stress range from zero stress to the ultimate strength of the material. Static creep tests were made for tension, bending, and torsion, and the creep behavior was studied for fluctuating axial loads superimposed on static tensile loads. In general, the various kinds of creep tests show that the creep deformation resistance varies with the ultimate tensile strengths of the laminates except for the torsion creep tests of square cross sections. Attempts were made to interpret the creep test results for the purpose of obtaining a stress-creep rate relation. The log-log, log, and hyperbolic sine methods of interpretation were used. The agreement between these methods of interpretation and the test results was not satisfactory so that the results of these interpretations are not included in this report.
Descriptive Note:
Technical note
Pages:
0069
Distribution Statement:
Approved for public release; distribution is unlimited.
File Size:
7.09MB
