Blatz, P. J. (1963) Studies of the mechanical behavior of ammonium perchlorate particles, a glass-bead filled polyurethane binder, and a typical continuum binder. In: Bulletin of the 2nd meeting: Interagency Chemical Rocket Propulsion Group, Working Group on Mechanical Behavior, November 19-21, 1963, Hill Air Force Base, Utah. CPIA publication. No.27. The Agency , Silver Spring, MD, pp. 7-32. https://resolver.caltech.edu/CaltechAUTHORS:20100518-094619158
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Abstract
Experimental studies were carried out on a continuum Neoprene binder, a glass bead-filled-polyurethane binder, and unbound micro-pulverized ammonium perchlorate particles. As a result of stress relaxation and creep experiments, it is concluded that the large deformation behavior of the filled binder can be described in part in terms of the large deformation behavior of the continuum binder. The time scale of relaxation of stress in the filled binder is much longer than that of the unfilled binder. It is determined by frictional processes between the filler and binder and also among the filler particles. As a result of relaxation and creep studies on ammonium perchlorate particles, it is found that the time scale of relaxation is of the same order of magnitude as that of the filled binder. In addition, it is believed that the static indeterminacy of the unbound particles helps to explain much of the strain variation at given stress level that is observed in tensile experiments of composite propellants.
Item Type: | Book Section |
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Series Name: | CPIA publication |
Issue or Number: | 27 |
Record Number: | CaltechAUTHORS:20100518-094619158 |
Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20100518-094619158 |
Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. |
ID Code: | 18334 |
Collection: | CaltechAUTHORS |
Deposited By: | George Porter |
Deposited On: | 23 Jun 2010 20:59 |
Last Modified: | 03 Oct 2019 01:41 |
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