The correlation diagram is introduced here in order to follow the different relaxations of polymers. Two examples will be presented: PMMA and wood at several moisture contents between 20 and 100°C. For the two materials, an experiment of creep at linearly increasing temperature is proposed, so as to point out the relaxations of the different components for low frequencies. In this experiment, a relaxation induces a maximum of creep kinetic. The movement of the temperatures of relaxation with the moisture content will be observed. For wood at high moisture content (near the fiber saturation point), the cellulose's relaxation of the reinforcements will be observed at high temperature.

References

1 Y. Wada and K. Yamamoto, J. Phys. Soc., Jpn., 11, 887 (1956).
10.1143/JPSJ.11.887
CAS Web of Science® Google Scholar
2 G. M. Guerrin, Caractéerisation en flexion quasistatique et dynamique d'un matériau thermo-hydro-viscoélastique: le bois, Thesis of the Institut Polytechnique of Lorraine, France, 1990;.
Google Scholar
3 S. S. Kelley, T. G. Rials, and W. G. Glasser, J. Mat. Sci., 27, 617 (1987).
10.1007/BF01160778
Web of Science® Google Scholar
4 W. G. Gall and N. G. Mc Crum, J. Polym. Sci., 50, 489 (1961).
10.1002/pol.1961.1205015417
CAS Web of Science® Google Scholar
5 A. Vautrin, Etude du comportement viscoélastique des solides par la méthode de traction modulée. Relaxations secondaires du polyméthyle méthacrylate, Thesis of Docteur Ingénieur of the Université of Nancy I,1976;
Google Scholar
6 M. Ziani and J. M. Genevaux, Proceedings of the 25th Conference of the Groupe Français de Rhéologie, Grenoble, 28–30 November 1990, France, Influence de l'humidité et de la température, sur les caractéristiques radiales et tangentielles du bois à basse fréquence.
Google Scholar
7 J. M. Genevaux, Le fluage à température linéairement croissante: caractérisation des sources de viscoélasticité anisotrope du bois, Thesis of the Institut Polytechnique of Lorraine, 1989.
Google Scholar
8 B. Lazan, Damping of Materials and Members in Structural Mechanics, Pergamon Press, Oxford (1968).
Google Scholar
9 J. J. Aklonis and W. J. Macknight, Introduction to Polymer Viscoelasticity, Wiley-Interscience, New York.
Google Scholar
10 C. C. Bauwens, J. Mat. Sci., 8, 968 (1973).
10.1007/BF00756628
Web of Science® Google Scholar
11 E. V. Thompson, J. Polym. Sci., 6, 433 (1968).
10.1002/pol.1968.160060301
CAS Web of Science® Google Scholar
12 J. Bodig and B. A. Jayne, Mechanics of Wood and Wood Composites, Van Nostrand Reinhold, New York, 1982.
Google Scholar
13 F. P. Kollmann and W. A. Cote, Principles of Wood Science and Technology, Vol. 1, Solid Wood, Springer-Verlag, Berlin, 1984.
Google Scholar
14 J. M. Genevaux, Anisotropie du comportement différé: fluage sous température croissante d'un bois de peuplier, Proceedings of the conference “Comportement mécanique du bois,” 1988.
Google Scholar
15 J. M. Genevaux, “Fluage à température croissante: mise en évidence de transitions multiples” (available in english: “Anisotropy of the differed behaviour: creep at increasing temperature of a poplar wood”), Proceedings of the 23rd conference of the Groupe Français de Rhéologie, Bordeaux, 1987;.
Google Scholar

Volume45, Issue8

15 July 1992

Pages 1431-1439

Following of the relaxations in a polymer's behavior part I: “Correlation diagram” and creep at linearly increasing temperature

Abstract

References

References

Information

About Wiley Online Library

Help & Support

Opportunities

Connect with Wiley

Following of the relaxations in a polymer's behavior part I: “Correlation diagram” and creep at linearly increasing temperature

Abstract

References

References

Related

Information