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1. 发明授权

US06945114B2 Laser-air, hybrid, ultrasonic testing of railroad tracks 有权
标题翻译：铁路轨道的激光，混合，超声波测试
公开(公告)号：US06945114B2
公开(公告)日：2005-09-20
申请号：US10449655
申请日：2003-05-30
申请人： Shant Kenderian , B. Boro Djordjevic , Robert E. Green, Jr. , Donatella Cerniglia
发明人： Shant Kenderian , B. Boro Djordjevic , Robert E. Green, Jr. , Donatella Cerniglia
IPC分类号： G01N29/12 , G01N29/24 , G01N29/46 , G01N29/10
CPC分类号： G01N29/46 , G01N29/12 , G01N29/2418 , G01N2291/014 , G01N2291/02854 , G01N2291/0421 , G01N2291/0422 , G01N2291/0423 , G01N2291/044 , G01N2291/106 , G01N2291/2623
摘要： Formed Laser Sources (FLS) using pulsed laser light for generation of ultrasonic stress waves are combined with air-coupled detection of ultrasound to provide for the hybrid non-contact, dynamic and remote ultrasonic testing of structural materials, especially railroad tracks. Using this hybrid technique, multimode and controlled frequency and wavefront surface acoustic waves, plate waves, guided waves, and bulk waves are generated to propagate on and within the rail tracks. The non-contact, remote nature of this methodology enables high-speed, fill access inspections of rail tracks. The flexibility and remote nature of this methodology makes possible the detection of critical cracks that are not easy, or impossible to detect, with current inspection techniques available to the railroad industry.
摘要翻译：使用脉冲激光生成超声波应力波的成像激光源（FLS）与超声波的空气耦合检测相结合，为结构材料，特别是铁路轨道的混合非接触式，动态和远程超声波测试提供了参考。使用这种混合技术，产生多模和受控频率和波前表面声波，板波，导波和体波，以在轨道上和轨道内传播。该方法的非接触式远程特性使得轨道能够进行高速，填充检查。该方法的灵活性和远程性质使得可以利用铁路行业现有的检测技术来检测不容易或不可能检测到的关键裂纹。

2. 发明申请

US20060201253A1 System for non-contact interrogation of railroad axles using laser-based ultrasonic inspection 审中-公开
标题翻译：基于激光超声波检测的铁路非接触式询问系统
公开(公告)号：US20060201253A1
公开(公告)日：2006-09-14
申请号：US11374344
申请日：2006-03-13
申请人： Kari Gonzales , Richard Morgan , Shant Kenderian , James Bilodeau
发明人： Kari Gonzales , Richard Morgan , Shant Kenderian , James Bilodeau
IPC分类号： G01N29/04
CPC分类号： G01N29/0618 , G01N29/07 , G01N29/11 , G01N29/221 , G01N29/2418 , G01N29/341 , G01N2291/0423 , G01N2291/0426 , G01N2291/044 , G01N2291/2626
摘要： A system for ultrasonic inspection of railroad axles uses a laser to project a series of pulses onto the axle to create an ultrasonic signal propagating along the surface of the axle. An air-coupled detector detects the ultrasonic signal at a position on the axle spaced apart from the laser impact region. The ultrasonic signal can then be analyzed to detect the presence of a reflected wave indicating the presence of a defect in the axle.
摘要翻译：用于铁路轴超声波检测的系统使用激光器将一系列脉冲投射到轴上以产生沿着轴的表面传播的超声波信号。空气耦合检测器在与激光冲击区域分开的轴上的位置处检测超声波信号。然后可以分析超声波信号以检测表示在轴中存在缺陷的反射波的存在。

3. 发明授权

US06862936B2 Laser-air, hybrid, ultrasonic testing of railroad wheels 失效
标题翻译：激光空气，混合动力，铁路车轮超声波检测
公开(公告)号：US06862936B2
公开(公告)日：2005-03-08
申请号：US10637125
申请日：2003-08-08
申请人： Shant Kenderian , B. Boro Djordjevic , Donatella Cerniglia
发明人： Shant Kenderian , B. Boro Djordjevic , Donatella Cerniglia
IPC分类号： G01M17/10 , G01N29/04
CPC分类号： G01M17/10 , G01N2291/044 , G01N2291/2696
摘要： A remote, non-contact system for detecting a defect in a railroad wheel as the wheel is stationary or moving along a railroad track includes; (1) a pulsed, laser light source for generating an ultrasonic wave in the wheel, the ultrasonic wave having a direct portion and reflected and transmitted portions if the direct portion encounters a defect in the wheel, (2) an optical component in the path of the light from the light source for forming the light into a specified illumination pattern so that the generated ultrasonic wave has a specified wavefront, (3) an air-coupled transducer or a group of transducers for sensing the acoustic signal emanating from the wheel that results from the ultrasonic wave traveling through the wheel, and (4) a signal processor, responsive to the sensed acoustic signal, capable of distinguishing whether the sensed signal has a component that indicates the existence of a reflected portion in the ultrasonic wave, wherein the presence of such a component in the acoustic signal indicates the existence of a defect in the railroad wheel.
摘要翻译：一种遥控非接触式系统，用于当车轮静止或沿着铁路轨道移动时检测铁路车轮中的缺陷; （1）用于在车轮中产生超声波的脉冲激光源，如果直接部分遇到车轮中的缺陷，超声波具有直接部分和反射和透射部分，（2）路径中的光学部件来自光源的光用于将光形成指定的照明图案，使得所生成的超声波具有指定的波前，（3）空气耦合的换能器或用于感测从车轮发出的声信号的一组换能器，来自超声波行进通过车轮的结果，以及（4）信号处理器，响应于感测到的声信号，能够区分感测到的信号是否具有指示超声波中存在反射部分的分量，其中，在声信号中存在这样的部件表示在铁路车轮中存在缺陷。

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