Fracture behaviour of de-aged poly(lactic acid) assessed by essential work of fracture and J-Integral methods

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Title:	Fracture behaviour of de-aged poly(lactic acid) assessed by essential work of fracture and J-Integral methods
Author:	Santana Pérez, Orlando Onofre; Rodríguez, C.; Belzunce, J.; Gamez Pérez, José; Carrasco Alonso, Félix Ángel; Maspoch Rulduà, Mª Lluïsa
Other authors:	Universitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica; Universitat Politècnica de Catalunya. POLYCOM - Polimers i compòsits: tecnologia
Abstract:	The applicability of the essential work of fracture (EWF) in SENB geometry as an alternative to the J-integral methodology has been assessed. An amorphous poly(lactic acid) (PLA) with ductile behaviour promoted by a de-ageing heat treatment has been used. The results demonstrate that the EWF technique can be used as a simple alternative methodology to determine the J0.2 value in plane strain conditions, using the ESIS-2000 protocol and ASTME813-87 standard. As a validation of the range of ligament length to be used in the EWF analysis, the SENB solution of the Slip Line Field theory could be employed.
Abstract:	Peer Reviewed
Subject(s):	-Àrees temàtiques de la UPC::Enginyeria dels materials::Materials plàstics i polímers -Thermoplastics -Biopolymers--Fracture -Biopolímers -- Fractura -Termoplàstics
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Document type:	Article - Published version Article
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