Some low-modulus birefringent resins
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Information is given to enable the photoelastician to select and prepare his own clear, bubblefree, constant-thickness, low-modulus (500 psi or less) birefringent resins. Various urethane formulations are examined. The effects of environment, mixing, casting, molds, cure, post-cure and calibration are discussed. A procedure to select a particular formulation is suggested.
KeywordsMold Mechanical Engineer Fluid Dynamics Urethane Urethane Formulation
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- 1.San Miguel, A., “Propellant Strain Analysis by the Photoelastic Coating Technique,” Bulletin of the Twentieth Meeting, JANAF Solid Propellant Information Agency, The Johns Hopkins University, Silver Spring, Md., November 1961.Google Scholar
- 2.San Miguel, A., “Strain Measurements of a Pressurized Solid Propellant Grain,”Technical Report No. 32-182, Jet Propulsion Laboratory, Pasadena, Calif., March 15,1962.Google Scholar
- 3.San Miguel, A., “An Experimental Method to Measure the Strain Energy Function W,”Technical Report No. 32-365, Jet Propulsion Laboratory, Pasadena, Calif., December 20,1962.Google Scholar
- 4.McMaster, R. C. (Editor), “Photoelastic-Coating Tests,”Nondestructive Testing Handbook, Vol. II, Ronald Press, New York, N. Y., 1959.Google Scholar
- 5.Bloss, F. D., An Introduction to the Methods of Optical Crystallography, Holt, Reinhart & Winston, Inc., New York, N. Y., 1961.Google Scholar
- 6.“Flexible Photoelastic Casting Resin,” Bulletin E-105, Hysol Corp., Olean, N. Y., April 1951.Google Scholar
- 7.Dally, J. W., Riley, W. F., and Durelli, A. J., “A Photoelastic Approach to Transient Stress Problems Employing Low-Modulus Materials,” Journal of Applied Mechanics, December 1959.Google Scholar