Abstract: The high-end equipment in major engineering project usually served in harsh environment and complicated load conditions. To guarantee the structural integrity and service safety of the equipment, the influencing factors such as material properties, multi physical field loads, environment and complex geometric characteristics and mechanical structure strength design should be comprehensively evaluated. To acquire the significant parameters of material and mechanical structure in service environment, research on high-temperature mechanical test technology in harsh environment is carried out, so as to serve the independent design and manufacturing of key high-temperature components in the fields of nuclear power, aerospace, chemical energy and so on. High temperature mechanical test technology of domestic test equipment depends on high temperature mechanical test equipment. China began to develop domestic high-temperature mechanical test equipment in harsh environment in the 1980s. It focuses on the development process of domestic high-temperature mechanical test equipment in severe environment, summarizes and discusses the overall technical framework of high-temperature mechanical test equipment in severe environment, analyses in detail four types of key technologies involved in high-temperature mechanical test equipment in severe environment, and introduces the domestic high-temperature mechanical test equipment and characteristics of four types of typical severe environment. Finally, the future breakthrough of high temperature mechanical test technology under more severe conditions is prospected.

Key words: harsh environment, high temperature mechanics, test technology, domestic test equipment