WorldCat Identities

Deverall, L. I.

Overview
Works: 6 works in 9 publications in 1 language and 39 library holdings
Roles: Author
Classifications: QA1, 510
Publication Timeline
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Most widely held works by L. I Deverall
Kinetic studies on the Spert I reactor by George W Griffing( Book )

3 editions published in 1958 in English and held by 5 WorldCat member libraries worldwide

Kinetic studies on the SPERT I reactor by L. I Deverall( Book )

2 editions published in 1957 in English and held by 4 WorldCat member libraries worldwide

Forced vibration of uniform and tapered beams with general edge conditions and loads by C. J Thorne( Book )

1 edition published in 1954 in English and held by 3 WorldCat member libraries worldwide

Application of Fracture Mechanics to Predicting Failures in Solid Propellants( Book )

1 edition published in 1970 in English and held by 1 WorldCat member library worldwide

Analytical and experimental methods were developed to measure the structural and fracture properties of a linear elastic epoxy and a linear viscoelastic polyurethane material (Solithane). These properties were used in stress and fracture analysis to predict the initiation, growth, and trajectory of cracks in circular port and star grain designs. Experimental confirmation of these predictions was obtained by testing thin two-dimensional (plane stress) and three-dimensional grains of both materials under thermal and pressurization loading conditions. Crack initiation conditions with the epoxy material were in excellent agreement with theoretical predictions using elastic numerical analysis methods. Crack initiation and velocity measurements with the Solithane two-dimensional grains were in good agreement with numerical analysis techniques combined with a time-dependent crack analysis which was programmed for efficient use. An approximate three-dimensional fracture analysis for circular port grains with elliptical flaws was developed and programmed. Results of the crack prediction computer program were in good agreement with three-dimensional grain test data. Experimental work with the epoxy and Solithane grains showed that cracks in two- and three-dimensional grains will propagate under thermal and pressurization loading conditions and these fracture conditions can be predicted using analytic methods presented in this report. Photoelastic analysis was used to confirm the stress intensity factors at the crack tip for thermal and pressurization loaded grains. Photoelastic results were in good agreement with both the numerical predicitons and the crack velocity measurements with Solithane grains. (Author)
The experimental and theoretical comparison of the erosive burning characteristics of composite propellants by W. J Lawrence( Book )

1 edition published in 1968 in English and held by 1 WorldCat member library worldwide

Case Liner Bond Analysis( Book )

1 edition published in 1974 in English and held by 1 WorldCat member library worldwide

A second generation finite element computer code was developed with specialized features for accurate evaluation of solid propellant case liner bond regions. The code uses six-term quadratic elements for propellant modeling, special thin liner elements for liner and insulation modeling, and a crack tip element for modeling boots and cracked regions. Mesh generation is automated with variable density spacing and input format is optimized for minimum labor during problem setup. The code contains a rezone feature for selective refining of specific high stress gradient regions and rerunning for maximum accuracy. This new computer code was made available to the solid propellant industry at a computer users course in October 1973. (Modified author abstract)
 
Audience Level
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Audience Level
1
  Kids General Special  
Audience level: 0.81 (from 0.76 for Forced vib ... to 1.00 for Case Liner ...)

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