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Dynamic Response of a Curved Plate Subjected to a Moving Local Heat Gradient

  • David A. Ehrhardt
  • B. T. Gockel
  • T. J. Beberniss
Conference paper
Part of the Conference Proceedings of the Society for Experimental Mechanics Series book series (CPSEMS)

Abstract

Structures moving faster than the speed of sound will experience localized pressure and temperature gradients due to shockwave impingement. During in-flight maneuvers, these gradients will move across the surface of the structure, causing quasi-static thermal and mechanical strains. Loading conditions in these combined environments includes complicated aero-thermal-mechanical coupling, which is difficult to replicate in laboratory conditions. This work focuses on thermo-mechanical loading of a 12 inch × 18 inch curved stainless-steel plate when subjected to a moving thermal gradient at a peak temperature of 200 °F and distributed white noise mechanical loading at 9 g’s from 100 to 800 Hz. The dynamic response of this plate is measured with high-speed 3D digital image correlation, and the temperature distribution is measured with a high-speed FLIR camera.

Keywords

Combined loading Nonlinear dynamics Digital image correlation IR camera 

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Copyright information

© Society for Experimental Mechanics, Inc. 2020

Authors and Affiliations

  • David A. Ehrhardt
    • 1
  • B. T. Gockel
    • 2
  • T. J. Beberniss
    • 2
  1. 1.Ehrhardt Engineering LLCMonticelloUSA
  2. 2.Air Force Research LaboratoryDaytonUSA

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