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Thermal Sensor to Monitor Mechanical Properties in Polymer/Fiber Composite Molding
Author(s) -
Rouison David,
Varejka Milena,
Picot Jules
Publication year - 2002
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450800517
Subject(s) - materials science , composite material , thermal conductivity , axial symmetry , composite number , fiber , heat flux , modulus , transverse plane , glass fiber , elastic modulus , molding (decorative) , thermal , heat transfer , structural engineering , mechanics , physics , meteorology , engineering
Multi‐layered samples of 1) continuous fiber axially aligned and 2) random oriented mat glass fiber composites were manually prepared for a fiber content ranging from zero to 20% (vol.). The uniaxially aligned samples displayed linear relations between both normalized elastic modulus and normalized thermal conductivity, and fiber content, for axially applied load and heat flux. For the random mat composite samples, similar results were obtained, with symmetry displayed in the plane of the mat. In both cases, measured axial thermal conductivity permits an evaluation of the axial elastic modulus. The Mathis surface probe used (US patent #5,795,064) is demonstrated as a non‐intrusive indirect method of obtaining thermal conductivity for heat flux parallel (i.e. axial or transverse) to the plane of a sample. The method shows potential for use as an in‐line monitoring device for the mechanical properties of molded composites.