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Journal of Central South University of Technology

, Volume 16, Issue 6, pp 1022–1027 | Cite as

Quantitative description of infrared radiation characteristics for solid materials subjected to external loading

  • Fang Wang (王 芳)
  • Ying-jun Li (李英骏)
  • Qiu-hua Rao (饶秋华)Email author
  • Lian Tang (唐 炼)
Article

Abstract

Based on the thermodynamics theory and physical micro-properties of solid materials subjected to external loading at room temperature, a formula of calculating temperature difference of infrared radiation in terms of the sum of three principal strains was deduced to quantitatively investigate the infrared radiation characteristics in test. Two typical specimens, the three-point bending beam and the disc pressed in diameter, were tested and their principal strains were calculated by finite element method in order to obtain the temperature differences of infrared radiation. Numerical results are in a good agreement with test results, which verifies the validity of the formula of calculating temperature differences of infrared radiation and the model of quantitatively describing the infrared radiation characteristics of solid materials, and reveals the corresponding inner physical mechanism.

Key words

Infrared radiation characteristics thermodynamics analysis numerical simulation strain tensor 

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Copyright information

© Central South University Press and Springer Berlin Heidelberg 2009

Authors and Affiliations

  • Fang Wang (王 芳)
    • 1
    • 2
  • Ying-jun Li (李英骏)
    • 1
  • Qiu-hua Rao (饶秋华)
    • 3
    Email author
  • Lian Tang (唐 炼)
    • 2
  1. 1.School of Mechanics and Civil EngineeringChina University of Mining and Technology (Beijing)BeijingChina
  2. 2.Department of Mathematics-PhysicsChina University of Petroleum (Beijing)BeijingChina
  3. 3.School of Civil and Architectural EngineeringCentral South UniversityChangshaChina

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