Engineering Research Equipment Grant: Ultrasonic Velocity Testing Apparatus

工程研究设备资助：超声波速度测试仪

• 批准号: 8906295
• 负责人: Luis Vallejo
• 金额: $ 0.8万
• 依托单位: University of Pittsburgh
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-07-01 至 1990-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8906295&HistoricalAwards=false
• 关键词: Engineering; Research; Equipment; Grant; Ultrasonic

The Geotechnical Engineering Group of the Civil Engineering Department at the University of Pittsburgh is currently conducting research on the mechanical properties of: (a) frozen sands, (b) fissured clays, and (c) particle assemblages. Material properties that need to be measured in each of these cases are the elastic moduli (Young's Modulus of Elasticity, E; the Shear Modulus, G; and the Poisson's Ratio, v). Several theoretical methods exist to calculate these moduli in composite materials and materials containing cracks. However, laboratory testing is required to establish whether these theoretical models do in fact apply to frozen soils, fissured clays and particle assemblages. The goal of this project is to request funding to purchase an Ultrasonic Velocity Testing Apparatus that measures the elastic moduli.

土木工程岩土工程组 目前，匹兹堡大学 对下列材料的机械性能进行研究：（a）冷冻的 砂，（B）裂隙粘土，和（c）颗粒组合。 需要在每一个这些测量中测量的材料特性 例为弹性模量（杨氏弹性模量，E; 剪切模量G和泊松比v）。 存在几种理论方法来计算这些模量， 复合材料和含裂纹材料。 然而，在这方面， 需要实验室测试来确定这些 理论模型实际上适用于冻土，裂缝 粘土和颗粒组合。 该项目的目标是申请资金购买一个 超声波速度测试仪，测量弹性 模数