Analytical and Experimental Investigation of Debris Denting,Spall Formation and Propagation

碎片凹陷、剥落形成和传播的分析和实验研究

• 批准号: 9522010
• 负责人: Farshid Sadeghi
• 金额: $ 12.36万
• 依托单位: Purdue Research Foundation
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-09-01 至 1998-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9522010&HistoricalAwards=false
• 关键词: Analytical; Experimental; Investigation; Debris; Denting

9522010 Sadeghi Failure of lubricated tribological contacts is in most cases caused by debris in the lubricant. This study will develop analytical and experimental techniques to calculate and measure the effects of debris on performance parameters such as pressure, temperature, film thickness, and stress distribution in the solid surfaces. The stress calculations will be used to model crack propagation in fatigue spall development leading to mechanical failure. A multi-purpose tribotester will be used to obtain experimental data to validate the model from tests with lubricants that contain various concentrations and sizes of debris. ***

9522010在大多数情况下，润滑的摩擦学接触的萨德吉失效是由润滑剂中的碎屑引起的。这项研究将开发分析和实验技术来计算和测量碎片对固体表面的压力、温度、膜厚和应力分布等性能参数的影响。应力计算将用于模拟导致机械失效的疲劳层裂发展过程中的裂纹扩展。一个多用途的摩擦试验机将被用来获得实验数据，以从含有不同浓度和大小的碎片的润滑剂测试中验证模型。***