基于红外数字全息的建筑爆破环境应力场检测研究  

Research on Stress Field Detection of Building Blasting Environment Based on Infrared Digital Holography

作　　者：赖本林 张永安[1] 张亚萍[1] 田丽 赵丹露 黄俊豪 王刚 赵航 LAI Benlin;ZHANG Yongan;ZHANG Yaping;TIAN Li;ZHAO Danlu;HUANG Junhao;WANG Gang;ZHAO Hang(School of Science,Kunming University of Science and Technology,Kunming 650504,China;Northern Night Vision Technology Co.,Ltd,Kunming 650214,China)

机构地区：[1]昆明理工大学理学院,云南昆明650504 [2]北方夜视技术股份有限公司,云南昆明650214

出　　处：《红外技术》2023年第1期102-109,共8页Infrared Technology

基　　金：云南省基础研究项目(2019FI002,202101AS070018,202101AV070015)。

摘　　要：红外数字全息具有实时性强、可在复杂环境检测等优点;爆破环境的粉尘类气溶胶对可见光有较强的吸收、散射效应,红外波段处于“大气窗口”波长的红外光受气溶胶影响较小,该优势与数字全息相结合,本文提出一种可在高浓度粉尘环境下测量应力场的研究方法。将大小适中的光滑水泥板固定于三维施力架上作为研究对象,采用红外数字全息方法,改变环境粉尘浓度,分别测量光滑水泥板在不同压力作用下的应力场变化,对比全息图、相位差,验证了该方法的可行性,并设置可见光数字全息为对照实验。结果表明,红外数字全息可在高浓度粉尘环境下测量出应力场的施力点、压力相对大小及应力影响区域,实现实时、无损、全场检测,而可见光数字全息在此环境下检测效果不佳甚至无法完成检测,本文所提方法极大拓展了基于数字全息干涉计量应力检测手段的实用性。Infrared digital holography has strong real-time performance, is not easily disturbed by visible light,and can be detected in complex environments. It is widely used in special fields. For example, dust aerosols in a blasting environment have strong absorption and scattering effects on visible light, and infrared light at the wavelength of the “atmospheric window” in the infrared band is less affected by aerosols. This advantage has been combined with digital holography. A smooth cement plate of moderate size was fixed on a threedimensional force application frame as the research object, and the infrared digital holography method was used to change the dust concentration in the environment. The stress field changes of smooth cement plates under different pressures were measured, and the feasibility of this method was verified by comparing holograms and phase differences. Visible light digital holography was used as a control experiment. The results show that infrared digital holography can measure the force application point, relative pressure, and stress influence area of the stress field in an environment of high-concentration dust and realize real-time,nondestructive, and full-field detection, while visible digital holography in this environment is poor or even unable to complete the detection. The method proposed in this paper significantly expands the practicality of the stress detection method based on digital holographic interferometry.

关 键 词：红外数字全息 爆破环境 应力场 实时检测 

分 类 号：TN219[电子电信—物理电子学]