Development and Experimental Verification of a High-Temperature and In-Plane Biaxial Testing Apparatus

Given the lack of primary data on heat-resistant composites under high-temperature conditions, focus this paper is development an in-plane biaxial apparatus high temperatures and complex loads. Besides loading loads up to 80 kN, can load high-temperatures 2500 °C. A C/C tensile/compression test at 1700 °C illustrates successful use digital speckle pattern technology evaluate mechanical properties stress. impact a graphite specimen shows that temperature in vacuum inert gas atmosphere. The yield characteristics Q235 steel sheet stress show conduct various loads, including tension–tension, tension–compression, compression–compression proposed equipment measure composite materials, particularly composites. obtained results be applied structural design, life prediction, reliability evaluation, as well for development, research, design aerospace instruments critical materials.