CAJ | 학술논문

三维形变和三维应力测量一直是结构工程领域的重要研究课题。本文基于数字全息原理，设计了数字全息记录测试装置，实现了三维物体变形的测量；基于四个干涉图法和Matlab软件编程，提出并实现了数字相移，省去了压电位移器、位相控制器等硬件，简化了装置；基于数字全息测得的变形量与有限元理论，利用Ansys软件编程，获得变形物体的三维应力的大小及分布，从而实现了数字全息三维应力测试。大量实验表明，此方法实验装置简单、测量精度高，变形测量可容易达到1/10波长，应力测量精度可达到1.535×105Pa。
삼유형변화삼유응력측량일직시결구공정영역적중요연구과제。본문기우수자전식원리，설계료수자전식기록측시장치，실현료삼유물체변형적측량；기우사개간섭도법화Matlab연건편정，제출병실현료수자상이，성거료압전위이기、위상공제기등경건，간화료장치；기우수자전식측득적변형량여유한원이론，이용Ansys연건편정，획득변형물체적삼유응력적대소급분포，종이실현료수자전식삼유응력측시。대량실험표명，차방법실험장치간단、측량정도고，변형측량가용역체도1/10파장，응력측량정도가체도1.535×105Pa。
The measurement of three dimensional deformation and three-dimensional stress test are always an important research topic in the field of structure engineering. In this paper, based on the digital holographic principle, the mea-surement setup of digital holographic recording was designed, the three-dimensional deformation of an object was test-ed. Based on four-interferogram method and Matlab software programming, digital phase shift was proposed and real-ized,so the piezoelectric translator,phase controller and other hardware were deleted,the experimental layout was sim-plified.Based on the deformation measured by digital holography and finite element theory, and using Ansys software programming, the three-dimensional stress and distribution of a deformed object were obtained, so the digital holo-graphic three-dimensional stress test is achieved.A lot of experiment results shown that this method is a simple experi-mental setup and have high measure accuracy. The deformation test precision can be up to 1/10 wavelength, stress-measurement accuracy can be up to 1.535×105Pa.