ISSN:
0032-3888
Keywords:
Chemistry
;
Chemical Engineering
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Strain gage techniques have been developed to monitor the internal stresses in epoxy resin castings. The data obtained are a measure of the stresses developed on a transducer held in the center of a mass of polymerizing epoxy resin or those caused by thermal cycling of the potted unit at intervals of storage time. Results show that the stresses developed on the transducer during the first 70 hours of room temperature polymerization reached 900 psi in axial compression. Further polymerization during storage increased the stress to 2300 psi after 12 months. During thermal cycling approximately 10,000 psi compressive stress was developed at -54°C. These stresses were relieved at 71°C but reappeared at the lower temperatures upon subsequent cooling.
Additional Material:
6 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/pen.760050411
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