CAJ | 학술논문

激光超声检测技术作为一种新兴的无损检测方法，以其非接触、点式检测及对复杂形状试件检测效率高等显著优势，逐渐进入了人们的视线。介绍激光超声技术的原理及优点，制作带预置缺陷的复合材料层压板试件，使用激光超声检测系统，分别采用穿透法和脉冲反射法两种手段对含有预置缺陷的复合材料层压板进行验证性检测，均能检出φ2 mm的预置缺陷。通过与采用压电探头的传统超声检测系统的检测结果对比，表明激光超声检测系统可以达到和传统超声检测系统一致的检出率。
격광초성검측기술작위일충신흥적무손검측방법，이기비접촉、점식검측급대복잡형상시건검측효솔고등현저우세，축점진입료인문적시선。개소격광초성기술적원리급우점，제작대예치결함적복합재료층압판시건，사용격광초성검측계통，분별채용천투법화맥충반사법량충수단대함유예치결함적복합재료층압판진행험증성검측，균능검출φ2 mm적예치결함。통과여채용압전탐두적전통초성검측계통적검측결과대비，표명격광초성검측계통가이체도화전통초성검측계통일치적검출솔。
As a new nondestructive detection method ,laser ultrasonic ,which gradually goes into our sight ,is non‐contact ,point detection and have the significant advantage in the complex shape sample test with high effi‐ciency .The principle and advantages of laser ultrasonic technique is introduced ,and the composite laminates specimen with preset injury is made .The penetration method and pulse reflection method are used to test the sample ,which is composite laminates containing a preset damage .Results show that φ2 mm preset defects could be detected by both methods ,which can reach the same detection‐rate as a ultrasonic test system with a conventional piezoelectric probe .