Journal of Materials Engineering and Performance

, Volume 14, Issue 5, pp 563–564

High-resolution methods for measuring the thermal expansion coefficient of aerospace materials

Authors

  • Gregory Wallace
    • Mechanical Engineering DepartmentLoyola Marymount University
  • William Speer
    • Mechanical Engineering DepartmentLoyola Marymount University
  • J. Ogren
    • Mechanical Engineering DepartmentLoyola Marymount University
  • Omar S. Es-Said
    • Mechanical Engineering DepartmentLoyola Marymount University
Testing And Evaluation

DOI: 10.1361/105994905X64602

Cite this article as:
Wallace, G., Speer, W., Ogren, J. et al. J. of Materi Eng and Perform (2005) 14: 563. doi:10.1361/105994905X64602

Abstract

Accurately predicting the coefficient of thermal expansion for many aerospace components is critical to ensure proper functionality on orbit where the temperature gradient across a spacecraft can vary from +300 °F to −450 °F. Under these conditions, the linear approximations generated by theoretical equations no longer hold true, and experimental methods are needed. Although several methods exist for measuring the coefficient of thermal expansion of materials, laser interferometry yields high-resolution results, and the technique is widely accepted in the scientific community.

Keywords

coefficient of thermal expansion (CTE) cryogenic experimental methods extreme temperatures isotropic material properties

Copyright information

© ASM International 2005