ACCUEIL

Consignes aux
auteurs et coordonnateurs
Nos règles d'éthique
Autres revues >>
International Journal of Forming Processes
1292-7775
Publication suspended
 

 ARTICLE VOL 5/2-3-4 - 2002  - pp.337-349  - doi:10.3166/ijfp.5.337-349
TITLE
Influence of Strain-hardening and Damage on the Solid-state Drawing of Poly(oxymethylene)

ABSTRACT
The present work is devoted to the determination of stress-strain behaviour of poly(oxymethylene) ­ POM - under uniaxial tension at 160 °C. This temperature corresponds to the condition of the die-stretching process, specifically utilised for the fabrication of high stiffness monofilaments for wire rope applications . The availability of a constitutive law is of major importance for the modelling and the optimisation of the industrial process. The authors have utilised a novel testing technique (VidéoTraction® ) which gives access in real time to true stress, true strain and volume strain under constant true strain rate, even during the development of the neck. It was found that the strain-hardening was accompanied, at large deformation, by a very important dilatation of the material, volume strain contributing by about 25 % to the total axial strain. This volume change is due in a very small part to the elastic Poisson's effect, and in a major part to damage phenomena in the semi-crystalline microstructure. This effect, in conjunction with to chain compaction due to orientation, should be taken into account in the modelling of the industrial process.


AUTEUR(S)
Christian G'SELL, Ian M. WARD

KEYWORDS
Polymer, poly(oxymethylene), stretching, deformation, damage.

LANGUE DE L'ARTICLE
Anglais

 PRIX
• Abonné (hors accès direct) : 34.95 €
• Non abonné : 34.95 €
|
|
--> Tous les articles sont dans un format PDF protégé par tatouage 
   
ACCÉDER A L'ARTICLE COMPLET  (1,72 Mo)



Mot de passe oublié ?

ABONNEZ-VOUS !

CONTACTS
Comité de
rédaction
Conditions
générales de vente

 English version >> 
Lavoisier