SBIR PHASE II: Refinement of a Limited-Scan Backscatter Technique for Detection of Hidden Corrosion

SBIR 阶段 II：用于检测隐藏腐蚀的有限扫描反向散射技术的改进

• 批准号: 9312581
• 负责人: Abdelfatah Yacout
• 金额: $ 34.49万
• 依托单位: Quantum Research Services, Inc.
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-10-01 至 2000-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9312581&HistoricalAwards=false
• 关键词: SBIR; PHASE; II; Refinement; Limited

*** 9312581 Yacout This Small Business Innovation Research Phase II project seeks to extend and refine a photon backscatter technique for detecting corrosion that is hidden from direct external observation. The technique involves scanning a collimated source photon beam (and its associated collimated detector) over limited ranges near an external surface, offering rapid nondestructive examination. Phase II will be concerned with demonstrating operation and optimizing design of laboratory prototype equipment to inspect systems that have both thin ( 4 mm) and thick ( 4 mm) external layers (covers) in both planar and cylindrical geometries. A simulation code developed during the Phase I study will be upgraded to incorporate polyenergetic source emission, both slab and general cylindrical geometries, photon detection over distributed energies (allowing spectral analysis of simulation results), and an expanded material library that will allow a variety of conditions to be simulated. The code will be used to identify promising design conditions for experimental investigation. Laboratory bench-top prototype equipment will be designed, constructed, and tested over a range of both design and sample variables. Design variables will be optimized for both thin- and thick-cover conditions. The methodology has direct application to detection of hidden and inaccessible corrosion in various man-made systems including aircraft, ships, pipes, storage and processing tanks, buildings and bridges. Damage to such structures due to corrosion costs many millions of dollars per year and compromises safety. ***

* 9312581 Yacout 这个小企业创新研究第二阶段项目旨在扩展和完善光子反向散射技术，用于检测隐藏在直接外部观察之外的腐蚀。该技术涉及在外表面附近的有限范围内扫描准直源光子束（及其相关的准直检测器），提供快速的无损检测。第二阶段将涉及实验室原型设备的示范操作和优化设计，以检查平面和圆柱形几何形状中具有薄（4 mm）和厚（4 mm）外层（盖）的系统。在第一阶段研究期间开发的模拟代码将被升级，以纳入多能源发射，平板和一般圆柱形几何形状，分布式能量的光子探测（允许模拟结果的光谱分析），以及扩展的材料库，将允许模拟各种条件。该代码将用于确定有前途的设计条件进行实验研究。实验室台式原型设备的设计，建造和测试范围内的设计和样品变量。将针对薄覆盖层和厚覆盖层条件优化设计变量。 该方法可直接应用于检测各种人造系统中隐藏的和不可接近的腐蚀，包括飞机，船舶，管道，储存和加工罐，建筑物和桥梁。由于腐蚀而对这种结构造成的损坏每年花费数百万美元，并危及安全。 ***