Measurement of internal temperature of objects by x-rays

Temperature is one of the fundamental physical quantities in physics and a critical parameter in characterizing an object's properties. Therefore, temperature measurement has always been a crucial topic in industrial production. The existing temperature measurement technologies cannot measure the continuous temperature field distribution inside the objects, which is a important issue in industry. X-ray imaging provides a potential solution. In this work, X-ray imaging was used to measure the temperature field distribution of objects. A novel nonlinear fitting curve model was employed to reconstruct temperature from images and compare it with actual measurements. The practical effect of X-ray non-contact temperature measurement was discussed. The method was suitable for higher temperature conditions and facilitates noncontact temperature measurement of high-temperature objects, providing a new solution for detecting the internal temperature field of high-temperature in industry. Additionally, it provides an experimental way to verify the existing temperature field models.