High Temperature Tensile Testing System (HTTTS)

This proposal outlines a pioneering research project aimed at addressing critical challenges in the development of hypersonic leading-edge surfaces and propulsion materials, which necessitate materials that possess both high strength and temperature resilience. The project focuses on the essential need for comprehensive mechanical property data across the entire potential operating temperature spectrum of 0 to 3,000░C. The primary challenge lies in conducting tensile tests at such elevated temperatures, necessitating the development of heat-resistant materials and cooling mechanisms for test samples. As testing temperatures increase, the selection of suitable materials, furnace design, power and temperature control, and heat flux management for test equipment fabrication becomes increasingly constrained. To overcome these obstacles, the proposal introduces three interrelated solutions based on first principles: (1) collaboration with one of the four domestic furnace manufacturers capable of reaching 3,000░C to design a specialized furnace integrated with an innovative test rig and grip system; (2) the development of a novel, non-contact strain measurement system capable of accurate operation at 3,000░C, which represents a significant departure from existing technologies limited by temperature; and (3) the creation of a tensile grip system designed specifically to handle the challenges of testing brittle materials, such as ceramic monoliths and ceramic matrix composites, at extreme temperatures. This project aims to significantly advance the field of hypersonic materials testing by developing the necessary tools and methodologies to accurately measure mechanical properties at unprecedented temperatures, thereby addressing a critical gap in current testing capabilities and contributing to the advancement of materials science and engineering in extreme environments. Approved for Public Release | 24-MDA-11906 (16 Sep 24)