In-situ testing device and method for friction and wear of material under high-temperature prestress loading

The invention relates to an in-situ testing device and method for friction and wear of a material under high-temperature prestress loading, and belongs to the field of friction and wear performance testing of the material at a high temperature. The middle of the upper portion of a rack is fixedly connected with a test cavity, prestress loading and driving modules symmetrically arranged on the two sides horizontally penetrate through the test cavity respectively and are fixedly connected with the upper portion of the rack, the prestress loading and driving modules are fixedly connected with a friction test piece, an acoustic emission in-situ monitoring module is installed on the friction test piece, a high-temperature loading module is fixed in the test cavity through a bolt and located below the friction test piece, and a friction load loading module penetrates through the upper surface of the test cavity, is supported by a supporting frame and is in bolt connection with the test cavity through a corrugated p