CAJ | 학술논문

应用数字图像相关方法对高温条件下物体面内位移场进行快速、高精度测量。采用532 nm 面阵激光作为照明光源配合532 nm 窄带滤波与可调式衰减片组成的光学处理系统，很好地解决了高温情况下成像难题。介绍了人工散斑的制作方法，采用耐1000℃高温的高温墨作为散斑的制作原料，制作了可在1000℃高温情况下清晰的利于图像相关计算的散斑图。搭建了高温条件下物体面内位移的检测系统，分别做了常温下亮度不同的千分尺移动位移检测实验和喷灯对钢板持续局部加热到1000℃热变形场的测量实验。实验结果证明本系统具有抗干扰能力强、计算精度高以及便于实现的优点，可用于常温及高温条件下物体位移或变形场的测量。
응용수자도상상관방법대고온조건하물체면내위이장진행쾌속、고정도측량。채용532 nm 면진격광작위조명광원배합532 nm 착대려파여가조식쇠감편조성적광학처리계통，흔호지해결료고온정황하성상난제。개소료인공산반적제작방법，채용내1000℃고온적고온묵작위산반적제작원료，제작료가재1000℃고온정황하청석적리우도상상관계산적산반도。탑건료고온조건하물체면내위이적검측계통，분별주료상온하량도불동적천분척이동위이검측실험화분등대강판지속국부가열도1000℃열변형장적측량실험。실험결과증명본계통구유항간우능력강、계산정도고이급편우실현적우점，가용우상온급고온조건하물체위이혹변형장적측량。
The digital speckle correlation method was used to achieve fast and high-precision measurement of in-plane displacement under high temperature conditions. A plane array 532 nm laser used as the light source and an optical processing system which is composed of a 532 nm narrow band filter and an adjustable attenuator were a good solution to the imaging problem in this high-temperature case. An artificial speckle making method was described. In this method, high temperature ink resisting about 1000 ℃ was used as the speckle material, the artificial speckle under this situation was clear and good to image correlation calculation. An in-plane displacement detection system was built under high temperature conditions, micrometer moving displacement detection tests were carried out under different brightness values at room temperature, and thermal deformation field measurement tests of steel locally heated continuously to 1000℃by blowtorch was also made. Test results show that the system can be used for the measurement of object displacement or deformation field at room temperature and high temperature conditions with the advantages of strong anti-jamming capability, high accuracy, and easy realizing.