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COLLABORATIVE RESEARCH: The Physics and Mechanics of the Brittle-Ductile Transition in Rocks

COLLABORATIVE RESEARCH: The Physics and Mechanics of the Brittle-Ductile Transition in Rocks
合作研究：岩石脆韧转变的物理和力学
批准号：
8905111
负责人：
Brian Evans
金额：
$8.91万
依托单位：
Massachusetts Institute of Technology
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
1990
资助国家：
美国
项目状态：
已结题
起止时间：
1990-06-01 至 1992-05-31
来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=8905111&HistoricalAwards=false
关键词：
COLLABORATIVERESEARCHPhysicsMechanicsBrittle

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英文摘要
The PIs will study of the physics and mechanics of the brittle-ductile transition and of the effects of pressure, temperature, grain-size, and second-phase content on the strength of dunite, diabase, and marble. Strength and axial and volumetric strain will be measured during tests at temperatures of up to 1300o C and pressures of up to 600 MPa in either of three fluid confining-medium, triaxial testing machines presently available. The data will be used to determine the effect of pressure and temperature on strain hardening, dilation rates, and the localization process. Both creep tests and constant strain- rate tests will be done. Acoustic emission measurements will be made during some of the tests to obtain frequency of acoustic events as a function of strain.
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    1002758
  • 项目类别：
    Standard Grant
  • 资助金额：
    $35.03万
  • 财政年份：
    2010
  • 负责人：
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  • 依托单位：
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Microstructure in Marble: Comparison of Dislocation and Grain Structure Produced in Natural and Laboratory Deformation
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  • 项目类别：
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  • 批准年份：
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  • 负责人：
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