Acoustic Tomography and Reflection Imaging for Structural Concrete

结构混凝土的声学层析成像和反射成像

• 批准号: 9260840
• 负责人: Larry Olson
• 金额: $ 5万
• 依托单位: OLSON ENGINEERING, INC
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-01-01 至 1993-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9260840&HistoricalAwards=false
• 关键词: Acoustic; Tomography; Reflection; Imaging; Structural

The phase I research will involve acoustic tomography and reflection imaging of concrete conditions using stress wave energy to detect flaws such as void, honeycomb crackling and weak concrete in concrete test wall models. Key aspects of the research are implementation of a rapid scanning ultrasonic stress wave energy system that will be used to generate and measure compression and shear wave energy. A second key component of the research involves the adaptation of tomographic velocity and reflection/diffraction imaging methods from geophysics for evaluation of structural concrete conditions including both flaw detection and reinforcement location.

第一阶段的研究将涉及混凝土条件的声波层析成像和反射成像，使用应力波能量来检测混凝土试墙模型中的缺陷，如空洞、蜂窝裂纹和薄弱的混凝土。研究的关键方面是实现快速扫描超声波应力波能量系统，该系统将用于产生和测量压缩和剪切波能量。这项研究的第二个关键组成部分涉及采用来自地球物理学的层析速度和反射/衍射成像方法来评估结构混凝土条件，包括缺陷检测和钢筋位置。