CAREER: Fundamental Studies of Contact Fatigue in Metallic Materials
职业:金属材料接触疲劳的基础研究
基本信息
- 批准号:0836763
- 负责人:
- 金额:$ 43.95万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2008
- 资助国家:美国
- 起止时间:2008-02-01 至 2012-05-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
TECHNICAL: Research is directed towards obtaining a comprehensive understanding of the contact fatigue phenomenon in metallic materials. Through an approach that combines modeling and experimentation, the study will lay the foundation for a framework that explains the four stages of contact fatigue damage, namely, crack initiation, crack propagation under load, crack propagation under the influence of far-field loads, and fast fracture. A unique adhesion-based analytical model will be applied, which together with the formulation of a finite element based numerical model, would provide quantitative guidelines for crack initiation and life prediction. From experiment on materials (single crystalline- and polycrystalline-nickel, and duplex- and lamellar- titanium aluminide) with widely different microstructures, key insights on contact fatigue crack initiation will be obtained. Microstructure characteristic of contact fatigue such as the formation of dislocation structures and/or persistent slip bands preceding and contributing to crack nucleation will be identified through the study of single crystalline nickel. The role of grain-boundaries in inhibiting or enhancing contact fatigue cracking will be discerned through the study of polycrystalline nickel. The effects of phase distribution, i.e., duplex vs. lamellar forms, and domain orientations with respect to contact geometry, on contact fatigue crack initiation and propagation will be evaluated in the titanium aluminide system. NON-TECHNICAL: Research would have scientific and technological impact in the aircraft, automotive, and bio-medical industry. The scientific understanding would help in the development of materials with microstructures that provide enhanced resistance to contact fatigue in safety-critical components in aircraft structures and biomedical implants. The activities will enhance Louisiana State's research base and educational efforts in the field of advanced materials. The research would integrate a three-tier educational plan involving outreach programs addressing K-12 students through the Tulane Science Scholar Program; class-room and research opportunities for undergraduate and graduate students at Tulane and Xavier University (a Historically Black College and University) and dedicated research training for graduate students. Additionally, nearly 100 high school students, 350 undergraduates, 105 minorities, and 25 graduate students would benefit from the effort during the five-year period. An online archive incorporating information about course contents and lectures will also be created to provide easy access to all students and faculty through the department web site. This grant is being co-funded by the Metals Program in DMR and EPSCoR.
技术:研究旨在全面了解金属材料中的接触疲劳现象。通过建模和实验相结合的方法,这项研究将奠定基础的框架,解释接触疲劳损伤的四个阶段,即裂纹萌生,裂纹扩展载荷下,裂纹扩展的影响下的远场载荷,和快速断裂。一个独特的粘附为基础的分析模型将被应用,这与一个有限元为基础的数值模型的制定,将提供定量的指导方针裂纹萌生和寿命预测。通过对具有广泛不同微观结构的材料(单晶镍和多晶镍,以及双相铝化钛和层状铝化钛)的实验,将获得关于接触疲劳裂纹萌生的关键见解。接触疲劳的微观结构特征,如形成位错结构和/或持久的滑移带之前,并有助于裂纹成核将通过单晶镍的研究确定。晶界在抑制或增强接触疲劳裂纹中的作用将通过对多晶镍的研究来认识。相位分布的影响,即,将在铝化钛系统中评价双相与层状形式以及相对于接触几何形状的畴取向对接触疲劳裂纹萌生和扩展的影响。 非技术性:研究将对航空、汽车和生物医疗行业产生科学和技术影响。科学的理解将有助于开发具有微结构的材料,这些材料在飞机结构和生物医学植入物的安全关键部件中提供增强的抗接触疲劳性。这些活动将加强路易斯安那州在先进材料领域的研究基础和教育工作。该研究将整合一个三层教育计划,包括通过杜兰科学学者计划解决K-12学生的外展计划;杜兰和泽维尔大学(历史上的黑人学院和大学)的本科生和研究生的教室和研究机会,以及研究生的专门研究培训。此外,近100名高中生、350名本科生、105名少数民族学生和25名研究生将在五年期间受益。还将创建一个包含有关课程内容和讲座信息的在线档案,以便所有学生和教职员工通过系网站轻松访问。该赠款由DMR和EPSCoR的金属计划共同资助。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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T. Venkatesh其他文献
Computational interrogation of cis-regulatory elements of genes that are common targets of luteotropin and luteolysin in the primate corpus luteum.
对基因顺式调控元件的计算询问,这些基因是灵长类黄体中促黄体素和黄体溶血素的常见靶标。
- DOI:
- 发表时间:
2013 - 期刊:
- 影响因子:3.5
- 作者:
P. Suresh;T. Venkatesh - 通讯作者:
T. Venkatesh
Optoelectronic, DFT and current-voltage performance of new Schiff base 6-nitro-benzimidazole derivatives
新型席夫碱6-硝基苯并咪唑衍生物的光电、DFT和电流-电压性能
- DOI:
- 发表时间:
2022 - 期刊:
- 影响因子:3.8
- 作者:
K. Upendranath;T. Venkatesh;Y. Arthoba Nayaka;M. Shashank;G. Nagaraju - 通讯作者:
G. Nagaraju
Exploration of deleterious single nucleotide polymorphisms in the components of human P bodies: an in silico approach.
人类 P 体成分中有害单核苷酸多态性的探索:计算机方法。
- DOI:
- 发表时间:
2013 - 期刊:
- 影响因子:3.5
- 作者:
T. Venkatesh;P. Suresh - 通讯作者:
P. Suresh
Multi-packet reception dynamic frame-slotted ALOHA for IoT: Design and analysis
物联网多数据包接收动态帧时隙 ALOHA:设计与分析
- DOI:
10.1016/j.iot.2020.100256 - 发表时间:
2020 - 期刊:
- 影响因子:5.9
- 作者:
A. George;T. Venkatesh - 通讯作者:
T. Venkatesh
Synthesis, characterizations of new Schiff base heterocyclic derivatives and their optoelectronic, computational studies with level II & III features of LFPs
新型希夫碱杂环衍生物的合成、表征及其光电、II级计算研究
- DOI:
- 发表时间:
2022 - 期刊:
- 影响因子:3.8
- 作者:
K. Upendranath;T. Venkatesh;T. N. Lohith;M. A. Sridhar - 通讯作者:
M. A. Sridhar
T. Venkatesh的其他文献
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{{ truncateString('T. Venkatesh', 18)}}的其他基金
Collaborative Research: DMREF: Developing Damage Resistant Materials for Hydrogen Storage and Large-scale Transport
合作研究:DMREF:开发用于储氢和大规模运输的抗损伤材料
- 批准号:
2119337 - 财政年份:2021
- 资助金额:
$ 43.95万 - 项目类别:
Continuing Grant
Collaborative Research: Improving contact fatigue and wear properties using graded nanostructured surfaces in metallic materials
合作研究:使用金属材料中的分级纳米结构表面改善接触疲劳和磨损性能
- 批准号:
2004944 - 财政年份:2020
- 资助金额:
$ 43.95万 - 项目类别:
Continuing Grant
Fatigue Response of Nanostructured Metallic Materials
纳米结构金属材料的疲劳响应
- 批准号:
0836575 - 财政年份:2008
- 资助金额:
$ 43.95万 - 项目类别:
Standard Grant
CAREER: Fundamental Studies of Contact Fatigue in Metallic Materials
职业:金属材料接触疲劳的基础研究
- 批准号:
0547903 - 财政年份:2006
- 资助金额:
$ 43.95万 - 项目类别:
Standard Grant
Fatigue Response of Nanostructured Metallic Materials
纳米结构金属材料的疲劳响应
- 批准号:
0527779 - 财政年份:2005
- 资助金额:
$ 43.95万 - 项目类别:
Standard Grant
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