What testing has been done on additive manufacturing (AM) materials at cryogenic temperatures, and what material properties have been compiled?

Cryogenic AM Materials Testing ATI Image

Posted: May 31, 2023

Deadline: June 14, 2023

The Defense Systems Information Analysis Center (DSIAC) is searching for material properties of AM materials at cryogenic temperatures (especially liquid hydrogen temperature ~20K) for use in fluid and structural components (e.g., tanks, heat exchangers, etc.) of liquid hydrogen-fueled aircraft and spacecraft in support of a U.S. government agency.

Fundamental properties of interest include, but are not limited to, the following:  ultimate strength, Young’s modulus, Poison’s ratio, thermal conductivity, coefficient of thermal expansion, specific heat, fatigue life (thermal and pressure cycling), fracture toughness, hydrogen permeability, and hydrogen compatibility (reaction to permeation/leakage over long durations).  Because of the potentially anisotropic nature of AM materials, evaluated properties may contain a directional component that is a function of AM methods or parameters.

If you are involved in this type of research or have information on related research, please reach out to Travis Kneen (travis.j.kneen.ctr@mail.mil), the lead IAC engineer, or join the discussion on the DTIC DoDTechipedia posting by clicking the “Join the Discussion” button below.

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