SBIR Phase I: Photonic Sensors for Nondestructive Evaluation Applications

SBIR 第一阶段：用于无损评估应用的光子传感器

• 批准号: 0711269
• 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: 2007
• 资助国家: 美国
• 起止时间: 2007-07-01 至 2007-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0711269&HistoricalAwards=false
• 关键词: SBIR; Phase; Photonic; Sensors; Nondestructive

This Small Business Innovation Research (SBIR) Phase I research project will support the development of a nondestructive inspection and evaluation sensor system, capable of measuring state of strain of advanced materials and structures as well as detecting and locating damages in these materials and structures. The proposed sensors consist of an array of stress sensitive Bragg gratings fabricated in a rosette configuration, which are capable of measuring state of strain, stress, and detecting damage presence and location in advanced structures. In Phase I, the sensor's capability to measure state of strain with large dynamic range, high accuracy and high sensitivity will be demonstrated. In addition, an ultrasonic method we will be used to demonstrate the sensor' capability to detect stress waves indicating the presence and location of damages in a metal structure. The grating rosette sensor, light source, and data acquisition will be controlled by an automated system, capable of determining the state of strain as well as the severity and locations of damages present in the advanced materials and structures.This novel NDE sensor system will offer significant cost saving for both the aviation andcivil engineering industries by providing a cost-effective solution for damage evaluation and structural failure analysis in aerospace and civil advanced structures. Advances in the ultrasonic wave sensor technology will permit researchers to utilize this technology to better understand degradation mechanism leading to material failure in large and complex structures. The low-cost, high sensitivity sensor technology will improve public safety as a result of cost-effective structural and material condition evaluation and diagnostics.

该小型企业创新研究（SBIR）第一阶段研究项目将支持无损检测和评估传感器系统的开发，该系统能够测量先进材料和结构的应变状态，并检测和定位这些材料和结构中的损坏。所提出的传感器由一系列以花环结构制造的应力敏感布拉格光栅组成，能够测量应变、应力状态，并检测先进结构中是否存在损伤和位置。在第一阶段，将展示传感器以大动态范围、高精度和高灵敏度测量应变状态的能力。此外，我们将使用超声波方法来演示传感器检测应力波的能力，以指示金属结构中是否存在损坏以及损坏的位置。光栅花环传感器、光源和数据采集将由自动化系统控制，能够确定应变状态以及先进材料和结构中存在的损坏的严重程度和位置。这种新颖的 NDE 传感器系统将提供通过为航空航天和民用先进结构的损伤评估和结构失效分析提供经济高效的解决方案，为航空和土木工程行业节省大量成本。超声波传感器技术的进步将使研究人员能够利用该技术更好地了解导致大型复杂结构材料失效的降解机制。低成本、高灵敏度的传感器技术将通过具有成本效益的结构和材料状况评估和诊断来改善公共安全。