Ultrasonic Assessment of Damage in Concrete Materials

混凝土材料损伤的超声波评估

• 批准号: 9634923
• 负责人: Kaspar Willam
• 金额: $ 18.99万
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-01-01 至 2000-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9634923&HistoricalAwards=false
• 关键词: Ultrasonic; Assessment; Damage; Concrete; Materials

9634923 William This project is to assess the deterioration of concrete properties with the aid of ultrasonic wave transmission techniques. To this end concrete specimens will be subjected to mechanical load-unload-reload histories in order to initiate stress-induced deterioration processes. The main objective will be to determine whether ultrasonic measurements lead to quantitative damage information on concrete materials. The project includes theoretical, experimental and computational research and development along the following directions: (a) Ultrasonic Wave Transmission Studies in Concrete Specimens (b) Characterization of Damage (c) Separation of Elastic Degradation and Inelasticity The project will clarify the predictive capabilities of ultrasonic damage assessment in concrete materials. ***

9634923威廉这个项目是评估与超声波传输技术的援助混凝土性能的恶化。 为此，混凝土试样将受到机械加载-卸载-重新加载的历史，以启动应力诱导的退化过程。 主要目的是确定超声波测量是否导致混凝土材料的定量损伤信息。 该项目包括理论，实验和计算研究和开发沿着以下方向： (a)超声波在混凝土中的传播研究 标本 (b)损坏的表征 (c)弹性退化与非弹性的分离 该项目将阐明混凝土材料超声损伤评估的预测能力。 ***