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Abstract NASA frequently needs thermal contraction data for materials to be used in cryogenic space flight missions. To satisfy this need, we developed an apparatus and a high-precision technique for performing such measurements using a commercial fiber-optic-based position sensor. We describe the measurement process and its verification using a copper sample. We also present data for alumina and sintered samarium cobalt, which we characterized for potential NASA use.
Tuttle et al. (Wed,) studied this question.