Fracture characterization of pristine/post-consumer HDPE blends using the essential work of fracture (EWF) concept and extended finite element method (XFEM)

被引：10
|
作者：
Na, Sukjoon [1 ]
Spatari, Sabrina [1 ]
Hsuan, Yick G. [1 ]
机构：
[1] Drexel Univ, Dept Civil Architectural & Environm Engn, Philadelphia, PA 19104 USA
来源：
ENGINEERING FRACTURE MECHANICS | 2015年 / 139卷
基金：
美国国家科学基金会;
关键词：
High density polyethylene; Essential work of fracture; Fracture; Extended finite element method; Crack growth; HIGH-DENSITY POLYETHYLENE; PLANE-STRAIN FRACTURE; MECHANICAL-PROPERTIES; CRACK-PROPAGATION; DUCTILE FRACTURE; TOUGHNESS; GROWTH; BEHAVIOR;
D O I：
10.1016/j.engfracmech.2015.02.026
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
The effect of recycled HDPE on plane-strain fracture properties of pristine HDPE was studied using the essential work of fracture concept. The plane-strain specific EWF decreased linearly as recycled content increased while the plane-strain specific non-EWF exponentially decreased. The specific non-EWF was investigated using the extended finite element method. The nonlinearity of specific non-EWF was influenced by the shape factor (beta(D)) and the specific non-essential fracture work per unit volume (w(p, D)), both of which were nonlinearly related to recycled content. Blending brittle recycled material to ductile pristine HDPE decreased the fracture toughness and the crack growth resistance. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1 / 17
页数：17
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