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    • 1. 发明申请
    • DEVICE AND METHOD FOR ULTRASONIC NONDESTRUCTIVE TESTING USING A LASER
    • 使用激光的超声波非结合测试的装置和方法
    • US20130342846A1
    • 2013-12-26
    • US13984902
    • 2012-02-14
    • Benjamin CampagneHubert Voillaume
    • Benjamin CampagneHubert Voillaume
    • G01N21/88
    • G01N21/8806G01N21/1702G01N29/04G01N29/2418G01N2021/1706
    • Device and method for the nondestructive testing of a part made of a composite material reinforced with fibers, the device including: a) an energizing laser beam generator and elements for producing a photoelastic stress pattern of the surface of the part, in an energizing area, using the laser beam; b) elements for generating a first detection laser beam capable of illuminating the part in a target area; c) elements for generating a second reference detection laser beam, whose characteristics can be controlled independently of those of the detection laser beam; d) a two-wave photoreactive detector including a photorefractive crystal pumped by the reference laser beam; e) elements for collecting the beam reflected by the target area of the first detection laser and conveying the beam into the photorefractive detector; and f) elements for modifying the characteristics of the reference laser so as to adjust the bandwidth of the photorefractive detector.
    • 一种由纤维增强的复合材料制成的部件的非破坏性测试的装置和方法,该装置包括:a)激励激光束发生器和用于在通电区域中产生该部件表面的光弹性应力模式的元件, 使用激光束; b)用于产生能够照射目标区域中的部分的第一检测激光束的元件; c)用于产生第二参考检测激光束的元件,其特性可以独立于检测激光束的特性被控制; d)包括由参考激光束泵浦的光折射晶体的双波光反应检测器; e)用于收集由第一检测激光器的目标区域反射的光束并将光束传送到光折射检测器中的元件; 以及f)用于修改参考激光器的特性以调节光折射检测器的带宽的元件。