High Temperature Vibratory Response of Hastelloy-X: Stereo-DIC Measurements and Image Decomposition Analysis

R. B. Berke, C. M. Sebastian, R. Chona, E. A. Patterson, J. Lambros

Research output: Contribution to journalArticlepeer-review

Abstract

The mechanical behavior of solids in combined high-temperature and vibratory environments, such as those experienced during hypersonic flight, are historically not well explored. In this work on Hastelloy-X plates, elevated temperatures were achieved by induction heating and periodic vibratory loading was applied using a shaker. Surface displacements and strains were measured using stereo digital image correlation (DIC) in the blue spectrum to alleviate issues associated with thermal radiation. Through the use of image decomposition techniques the resultant high-quality experimental data were used to validate numerical simulations of combined thermoacoustic loading. The simulations were based on the deformed shape and the corresponding temperature distributions measured experimentally as well as taking into account the thermal dependence of Hastelloy-X mechanical properties.

Original languageEnglish (US)
Pages (from-to)231-243
Number of pages13
JournalExperimental Mechanics
Volume56
Issue number2
DOIs
StatePublished - Feb 1 2016

Keywords

  • High temperature measurement
  • Image decomposition analysis
  • Induction heating
  • Stereo digital image correlation
  • Thermo-acoustic loading

ASJC Scopus subject areas

  • Aerospace Engineering
  • Mechanics of Materials
  • Mechanical Engineering

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