SBIR Phase I: Automated Structural Health Monitoring Sensor

SBIR 第一阶段：自动结构健康监测传感器

• 批准号: 0539234
• 负责人: An-Dien Nguyen
• 金额: $ 10万
• 依托单位: LOS GATOS RESEARCH INC
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-01-01 至 2006-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0539234&HistoricalAwards=false
• 关键词: SBIR; Phase; Automated; Structural; Health

This Small Business Innovation Research (SBIR) Phase I project will support the development of an automated structural health monitoring sensor system with wireless data acquisition capability, capable of detecting crack, corrosion, and disbonding in metal structures and advanced materials. This novel sensor technology offers a number of advantages including compactness (0.5mm x 2mm x 5mm), lightweight (few grams), and low power consumption (battery powered). This is achieved by fabricating Bragg gratings on stress-wave-sensitive polymer planar waveguides, which is capable of detecting both surface and below surface cracks in advanced material structures. In Phase I, a Lamb wave method is used to demonstrate the polymer gratings' capability to measure stress waves indicating the presence and severity of damages caused by cracks, fiber delaminations, or corrosion in a fiber composite structure, when the structure is probed by an ultrasonic wave generation actuator device. This novel Lamb wave sensor system will offer significant cost saving for the civil and aerospace industries by providing a cost-effective solution for damage detection in large aerospace and civil structures. The new sensor technology will enhance public safety as a result of effective warning systems. Advances in the Lamb wave sensor technology will permit researchers to utilize this technology to better understand degradation mechanism leading to material failure in large and complex structures.

该小型企业创新研究（SBIR）第一阶段项目将支持开发具有无线数据采集能力的自动化结构健康监测传感器系统，能够检测金属结构和先进材料中的裂纹，腐蚀和剥离。这种新型传感器技术具有许多优点，包括紧凑性（0.5mm x 2mm x 5mm），重量轻（几克）和低功耗（电池供电）。这是通过在应力波敏感聚合物平面波导上制造布拉格光栅来实现的，该平面波导能够检测先进材料结构中的表面和表面下的裂纹。在阶段I中，使用兰姆波方法来证明聚合物光栅测量应力波的能力，该应力波指示由纤维复合结构中的裂纹、纤维分层或腐蚀引起的损伤的存在和严重程度，当该结构由超声波产生致动器装置探测时。这种新型兰姆波传感器系统为大型航空航天和民用结构的损伤检测提供了具有成本效益的解决方案，将为民用和航空航天工业节省大量成本。新的传感器技术将通过有效的预警系统加强公共安全。兰姆波传感器技术的进步将使研究人员能够利用这项技术更好地了解导致大型复杂结构材料失效的退化机制。