Thermal-mechanical coupling deformation is inevitable in the operation of materials and structures. Traditional deformation researches have mainly focused on temperature or deformation measurement at a specific temperature, but few studies have investigated the coupling relationship between temperature and deformation in a non-uniform thermal environment. This study presents a novel method of measuring the temperature and strain distribution of an object synchronously. A calibration object and its calibration method were designed to be utilized in the synchronous calibration of both the infrared and visible cameras, and a matching method of the infrared image and the visible image was proposed. The data in the non-uniform temperature field and the non-uniform strain field corresponded accurately using the proposed method. A simulation experiment and actual thermal coupling deformation experiments were utilized to verify the effectiveness and accuracy of the proposed method. The proposed method can realize the accurate correspondence of the temperature and strain fields in the measurement area and provide technical support for studying the actual thermal-mechanical coupling deformation of materials and structures.

热力耦合变形在材料和结构的运行中是不可避免的。传统的变形研究主要集中在温度或特定温度下的变形测量​​，但很少有研究研究非均匀热环境下温度与变形之间的耦合关系。本研究提出了一种同步测量物体温度和应变分布的新方法。设计了一种标定对象及其标定方法，用于红外和可见光相机的同步标定，提出了一种红外图像和可见光图像的匹配方法。使用所提出的方法，非均匀温度场和非均匀应变场中的数据准确对应。通过仿真实验和实际热耦合变形实验验证了所提方法的有效性和准确性。该方法可以实现测量区温度场和应变场的准确对应，为研究材料和结构的实际热力耦合变形提供技术支持。