Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
TEMPERATURE AND STRAIN-RATE DEPENDENCE OF YIELD STRAIN AND DEFORMATION-BEHAVIOR IN POLYETHYLENE
Autore:
BROOKS NW; UNWIN AP; DUCKETT RA; WARD IM;
Indirizzi:
UNIV LEEDS,IRC POLYMER SCI & TECHNOL LEEDS LS2 9JT W YORKSHIRE ENGLAND
Titolo Testata:
Journal of polymer science. Part B, Polymer physics
fascicolo: 4, volume: 35, anno: 1997,
pagine: 545 - 552
SICI:
0887-6266(1997)35:4<545:TASDOY>2.0.ZU;2-P
Fonte:
ISI
Lingua:
ENG
Keywords:
POLYETHYLENE; YIELD; STRAIN; DEFORMATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
9
Recensione:
Indirizzi per estratti:
Citazione:
N.W. Brooks et al., "TEMPERATURE AND STRAIN-RATE DEPENDENCE OF YIELD STRAIN AND DEFORMATION-BEHAVIOR IN POLYETHYLENE", Journal of polymer science. Part B, Polymer physics, 35(4), 1997, pp. 545-552

Abstract

The deformation behavior of a range of polyethylene materials which differ with respect to both their short-chain branch content and molecular weight has been studied. Mechanical measurements carried out over a wide range of temperatures have shown that there is a sudden transition in the measured tensile yield strain at a temperature which is dependent on both the grade of material and the applied strain rate. Above the transition temperature all of the materials behave in a nonlinear viscoelastic manner and the wide-angle X-ray scattering patterns obtained have shown that at low applied strains reorientation of the lamellae is observed before necking. Below the transition temperature the materials all behave in an elastic-plastic manner and there is no evidence of lamellar reorientation before necking. This transition in yield mechanism is not apparent when considering the yield stress data alone. (C) 1997 John Wiley & Sons, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/09/20 alle ore 05:12:53