Material Response Studies (MARS I). Volume VI. Mechanical Properties of Beryllium at High Strain Rates PDF Download
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Author: R. G. Kumble Publisher: ISBN: Category : Languages : en Pages : 70
Book Description
The purpose of this program was to study the effect of high strain rates and elevated temperatures on the mechanical properties of three grades of beryllium: S-200, I-400 and Ingot Sheet. Uniaxial tension and compression tests were conducted at strain rates of .001 to 1000/per sec. The test temperatures ranged from 72 to 700 F. This report includes a literature survey and a discussion on the problems encountered during testing in addition to the presentation and discussion of results. The influence of oxide content, grain size, and fabrication history on the strain rate sensitivity and other mechanical properties of beryllium is examined. (Author).
Author: R. G. Kumble Publisher: ISBN: Category : Languages : en Pages : 70
Book Description
The purpose of this program was to study the effect of high strain rates and elevated temperatures on the mechanical properties of three grades of beryllium: S-200, I-400 and Ingot Sheet. Uniaxial tension and compression tests were conducted at strain rates of .001 to 1000/per sec. The test temperatures ranged from 72 to 700 F. This report includes a literature survey and a discussion on the problems encountered during testing in addition to the presentation and discussion of results. The influence of oxide content, grain size, and fabrication history on the strain rate sensitivity and other mechanical properties of beryllium is examined. (Author).
Author: S. J. Green Publisher: ISBN: Category : Languages : en Pages : 33
Book Description
The purpose of the Material Response Studies (MARS I) program was to develop new techniques for evaluating the response of current and anticipated reentry vehicle materials to impulsive loads, such as a blast from a nuclear device, and to continue investigations of characterizing the mechanical properties of these materials at high strain rates and elevated temperatures. The four engineering tasks were: Uniaxial Stress Behavior to 10,000/second; Development of Multiaxial High Strain-Rate Test Techniques; Mechanical Properties of Ablative Materials up to Active Ablation Temperature; and Fundamental Study of the High Strain-Rate Behavior of Composites.
Author: Publisher: ISBN: Category : Languages : en Pages : 42
Book Description
An experimental technique is described for obtaining high rate tensile stress-strain data on materials with limited ductility. A modified split Hopkinson bar apparatus is used to obtain data on three advanced structural grades of beryllium at strain rates up to 500/sec. The data indicate that there is no significant loss in ductility with increasing strain rate in any of the three grades of beryllium. Flow stress is shown to increase linearly with strain rate up to strain rates of 1-10/sec and then more abruptly at higher rates.
Author: R. G. Kumble
Author: R. G. Kumble
Author: A. N. Ashurst
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Author: Defense Metals Information Center
Author: S. J. Green
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