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Dissipation Measurements in Steel Sheets Under Cyclic Loading by Use of Infrared Microthermography
Author(s) -
Poncelet M.,
Doudard C.,
Calloch S.,
Hild F.,
Weber B.
Publication year - 2010
Publication title -
strain
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.477
H-Index - 47
eISSN - 1475-1305
pISSN - 0039-2103
DOI - 10.1111/j.1475-1305.2009.00622.x
Subject(s) - dissipation , materials science , thermography , infrared , coating , composite material , convection , structural engineering , mechanics , optics , engineering , physics , thermodynamics
Heterogeneous dissipation in steel sheets due to cyclic loading is difficult to measure, especially in the transverse direction because of the high conductivity and low thickness of the sheets. The goal of this article is thus to develop an experimental protocol allowing for the dissipation field determination from infrared thermography. The protocol is based on a specific differential measurement and an asynchronous acquisition. It reduces measurement artefacts due to coating, rigid body motion, convection, and optical deleterious effects. It is eventually applied to different specimens.