NON LINEAR RESPONSE OF PET AND MODELLING IN THE FRAME OF THE QUASI POINT DEFECT THEORY

机译：PET的非线性响应和拟点缺陷理论框架中的建模

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The thermomechanical activation of deformation of amorphous and semi crystalline PET is investigated through dynamic mechanical and large strain experiments. Then, the mechanical behaviour of amorphous PET is analysed in the frame of the "quasi point defect" or qpd theory that allows description of both low and large strain in a unique theoretical frame. With this aim, a new method based on only three isochronal measurements and leading to the determination of the set parameters is proposed, and calculations in the non linear domain are compared to experimental results. Finally some qualitative explanations are given for the mechanical behaviour of semi crystalline PET.

机译：通过动态力学和大应变实验研究了非晶态和半晶态PET变形的热机械激活。然后，在“准点缺陷”或qpd理论框架内分析非晶态PET的机械性能，该理论允许在独特的理论框架内描述低应变和大应变。为此，提出了一种仅基于三个等时测量并导致确定设置参数的新方法，并将非线性域中的计算结果与实验结果进行了比较。最后，对半结晶PET的力学行为进行了定性解释。

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来源
《International Conference on Deformation, Yield and Fracture of Polymers; 20000410-20040413; Cambridge; GB》|2000年|P.478-481|共4页
会议地点 Cambridge(GB)
作者
E. Chabert; A. Ershad Langoudri; C. Gauthier;
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作者单位

GEMPPM, UMR INSA-CNRS 5510, F-69621 Villeurbanne Cedex, France;

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正文语种 eng
中图分类复合材料;
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NON LINEAR RESPONSE OF PET AND MODELLING IN THE FRAME OF THE QUASI POINT DEFECT THEORY

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