GB/T 43413-2023 "Non-destructive testing—Infrared thermographic testing—General principles for thermoelastic stress measurement" specifies the general methods for thermoelastic stress measurement using infrared thermography, covering terminology definitions, testing principles, equipment requirements, testing procedures, data processing, and result evaluation. It clarifies technical specifications such as the detector type and temperature measurement range of infrared thermal imagers, sets requirements for auxiliary equipment like heating and cooling devices, and controls environmental factors including temperature, humidity, and wind speed during testing. By analyzing changes in the temperature field of an object, the internal stress distribution is inferred, providing unified standards for non-destructive testing in industrial production.