A Study of Biaxial Strains at Notch Roots at High Temperature

高温下缺口根部双轴应变的研究

• 批准号: 9016817
• 负责人: William Sharpe
• 金额: $ 15.97万
• 依托单位: Johns Hopkins University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-04-01 至 1993-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9016817&HistoricalAwards=false
• 关键词: Study; Biaxial; Strains; Notch; Roots

Operation of mechanical systems at higher temperatures leads to greater efficiency, but proper design requires the understanding of the behavior of the individual components. This, in turn, requires a suitable model of the material response and a means of computing the stresses and strains at critical points. Detailed predictive capabilities are just becoming available and must be evaluated. The objective of this research is to measure biaxial strains at stress concentrations in metal specimens tested at high temperature (using laser based techniques) (650oC) and compare the results with predictions.

机械系统在更高的温度下运行会带来更高的效率，但适当的设计需要了解单个组件的行为。这反过来又需要一个合适的材料响应模型和一种计算临界点应力和应变的方法。详细的预测能力刚刚开始可用，必须进行评估。本研究的目的是测量高温（使用激光技术）（650℃）下金属试样应力集中时的双轴应变，并将结果与预测结果进行比较。