Prediction of Crack Initiation Life in Contact Fatigue
Prediction of Crack Initiation Life in Contact Fatigue
批准号:
8817869
负责人:
Leon Keer
金额:
$26.98万
依托单位:
依托单位国家:
美国
项目类别:
Continuing Grant
财政年份:
1989
资助国家:
美国
项目状态:
已结题
起止时间:
1989-01-01 至 1992-12-31
中文摘要
接触疲劳是导致磨损和点蚀的原因, 轴承和许多其他摩擦元件。 疲劳过程 包括裂纹形核和裂纹扩展, 后一个过程是相当好理解的。 本研究 对裂纹形核过程进行模拟,并对模型进行验证 通过实验工作。 该模型将基于一种能量 位错偶极子重复运动的概念 在均质材料中对循环应力的响应。
英文摘要
Contact fatigue is the cause of wear and pitting damage of bearings and many other triboelements. The fatigue process consists of crack nucleation and crack propagation, of which the latter process is reasonably well understood. In this study the crack nucleation process will be modeled and the model validated by experimental work. The model will be based on an energy concept associated with repeated movement of dislocation dipoles in a homogeneous material in response to cyclic stresses.
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批准号:0114429
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项目类别:Continuing Grant
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资助金额:$274.2万
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财政年份:2001
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负责人:Leon Keer
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依托单位:
US-Tunisia Cooperative Research: Crack Problems in Functionally Graded Materials Under Thermo-Mechanical Loading
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批准号:0080462
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项目类别:Standard Grant
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资助金额:$3.0万
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财政年份:2000
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负责人:Leon Keer
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依托单位:
Industry/University Cooperative Research Center for Surface Engineering and Tribology
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批准号:9909226
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项目类别:Continuing Grant
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资助金额:$27.0万
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财政年份:1999
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负责人:Leon Keer
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依托单位:
Functionally Graded Nano-coatings for Dry Machining
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批准号:9877136
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项目类别:Continuing Grant
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资助金额:$35.0万
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财政年份:1999
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负责人:Leon Keer
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依托单位:
Investigations of Chemical Mechanical Polishing
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批准号:9872592
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项目类别:Standard Grant
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资助金额:$5.0万
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财政年份:1998
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负责人:Leon Keer
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依托单位:
Effects of Material Nonuniformity in Earthquake Faulting
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批准号:9614357
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项目类别:Standard Grant
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资助金额:$13.79万
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财政年份:1997
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负责人:Leon Keer
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依托单位:
New Coating Structures for Enhanced Tribological Performance
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批准号:9610440
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项目类别:Standard Grant
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资助金额:$30.92万
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财政年份:1997
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负责人:Leon Keer
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依托单位:
Industry/University Cooperative Research Center for Engineering Tribology
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批准号:9419537
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项目类别:Continuing Grant
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资助金额:$18.1万
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财政年份:1994
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负责人:Leon Keer
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依托单位:
Prediction of the Fatigue Failure of Unbalanced Magnetron Sputtered Diamond-like Carbon Coated Rollers in Combined Rolling/Sliding Contact
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批准号:9415072
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项目类别:Continuing Grant
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资助金额:$21.01万
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财政年份:1994
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负责人:Leon Keer
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依托单位:
IUCRC for Fundamental Investigations in Microtribology
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批准号:9216257
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项目类别:Standard Grant
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资助金额:$5.0万
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财政年份:1992
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负责人:Leon Keer
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依托单位:
U.S.-U.K. Cooperative Research: Theories for Coatings and Thin Films
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批准号:9024671
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项目类别:Standard Grant
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资助金额:$1.0万
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财政年份:1991
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负责人:Leon Keer
-
依托单位:
Analytical Models for Nonlinear Soil-Structure Interaction
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批准号:8315335
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项目类别:Continuing Grant
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资助金额:$15.51万
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财政年份:1984
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负责人:Leon Keer
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依托单位:
Theory of Stability Applied to Elastic Bodies With Moving Boundaries
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批准号:8006265
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项目类别:Standard Grant
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资助金额:$11.79万
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财政年份:1980
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负责人:Leon Keer
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依托单位:
Non-Hertzian Contact Stress Analysis
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批准号:7918015
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项目类别:Standard Grant
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资助金额:$10.5万
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财政年份:1980
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负责人:Leon Keer
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依托单位:
Theory of Stability Applied to Fracture
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批准号:7722155
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项目类别:Standard Grant
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资助金额:$15.63万
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财政年份:1978
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负责人:Leon Keer
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依托单位:
Fracture and Debonding of Composite Structures
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批准号:7204195
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项目类别:Standard Grant
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资助金额:$2.48万
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财政年份:1973
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负责人:Leon Keer
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依托单位:
海外基金