scholarly journals Fracture Toughness of Vapor Grown Carbon Nanofiber-Reinforced Polyethylene Composites

2009 ◽  
Vol 2009 ◽  
pp. 1-6 ◽  
Author(s):  
A. R. Adhikari ◽  
E. Partida ◽  
T. W. Petty ◽  
R. Jones ◽  
K. Lozano ◽  
...  
Keyword(s):  
Fracture Behavior ◽  
Carbon Nanofiber ◽  
Processing Conditions ◽  
Essential Work ◽  
Essential Work Of Fracture ◽  
Material Evaluation ◽  
Impact Fracture Behavior ◽  
The Impact ◽  
Work Of Fracture ◽  
Vapor Grown Carbon Nanofiber

The impact fracture behavior of a vapor grown carbon nanofiber (VGCNF) reinforced high-density polyethylene (PE) composite was evaluated. The samples consisting of pure PE and composites with 10 wt% and 20 wt% of VGCNFs were prepared by a combination of hot-pressing and extrusion methods. Extrusion was used to produce samples with substantially different shear histories. The fracture behavior of these samples was analyzed using the essential work of fracture (EWF) approach. The results showed an increase of 292% in the essential work of fracture for the loading of 10 wt%. Further increasing fiber loading to 20 wt% caused the essential work of fracture to increase only 193% with respect to the unmodified material. Evaluation of the fracture surface morphology indicated that the fibril frequency and microvoid size within the various fiber loadings depended strongly on processing conditions.

scholarly journals Evaluation of fracture behavior of polyethylene/CaCO3 nanocomposite using essential work of fracture (EWF) approach

2014 ◽  
Vol 1 (1) ◽  
pp. 27-35 ◽  
Author(s):  
Meymanat S. Mohsenzadeh ◽  
Mohammad Mazinani ◽  
Seyed Mojtaba Zebarjad
Keyword(s):  
Fracture Behavior ◽  
Essential Work ◽  
Essential Work Of Fracture ◽  
Work Of Fracture

Effect of β-phase on the fracture behavior of dynamically vulcanized PP/EPDM blends studied by the essential work of fracture approach

2009 ◽  
Vol 45 (5) ◽  
pp. 1448-1453 ◽  
Author(s):  
Xue-Gang Tang ◽  
Rui-Ying Bao ◽  
Wei Yang ◽  
Bang-hu Xie ◽  
Ming-bo Yang ◽  
...  
Keyword(s):  
Fracture Behavior ◽  
Essential Work ◽  
Essential Work Of Fracture ◽  
Β Phase ◽  
Work Of Fracture

Effect of annealing on fracture behavior of poly(propylene-block-ethylene) using essential work of fracture analysis

2006 ◽  
Vol 103 (5) ◽  
pp. 3438-3446 ◽  
Author(s):  
Qing-guo Li ◽  
Bang-Hu Xie ◽  
Wei Yang ◽  
Zhong-Ming Li ◽  
Wei-qin Zhang ◽  
...  
Keyword(s):  
Fracture Behavior ◽  
Fracture Analysis ◽  
Essential Work ◽  
Essential Work Of Fracture ◽  
Poly Propylene ◽  
Work Of Fracture

scholarly journals Clay-Based Polymer Nanocomposites: Essential Work of Fracture

Polymers ◽  
2021 ◽  
Vol 13 (15) ◽  
pp. 2399
Author(s):  
Edgar Adrian Franco-Urquiza
Keyword(s):  
Polymer Nanocomposites ◽  
Fracture Behavior ◽  
General Structure ◽  
Polymer Nanocomposite ◽  
Outer Zone ◽  
Essential Work ◽  
Essential Work Of Fracture ◽  
Molecular Arrangement ◽  
Two Parameters ◽  
Work Of Fracture

This work details the general structure of the clays used as a reinforcement phase in polymer nanocomposites. Clays are formed by the molecular arrangement of atomic planes described through diagrams to improve their visualization. The molecular knowledge of clays can facilitate the selection of the polymer matrix and achieve a suitable process to obtain clay-based polymer nanocomposite systems. This work highlights the development of polymer nanocomposites using the melt intercalation method. The essential work of fracture (EWF) technique has been used to characterize the fracture behavior of materials that show ductility and where complete yielding of the ligament region occurs before the crack propagation. In this sense, the EWF technique characterizes the post-yielding fracture mechanics, determining two parameters: the specific essential work of fracture (we), related to the surface where the actual fracture process occurs, and the specific non-essential work of fracture (wp), related to the plastic work carried out in the outer zone of the fracture zone. The EWF technique has been used successfully in nano-reinforced polymers to study the influence of different variables on fracture behavior. In this work, the fundamentals of the EWF technique are described, and some examples of its application are compiled, presenting a summary of the most relevant contributions in recent years.

scholarly journals Fracture behavior of boehmite-filled polypropylene block copolymer nanocomposites as assessed by the essential work of fracture concept

2014 ◽  
Vol 131 (13) ◽  
pp. n/a-n/a ◽  
Author(s):  
Tamás Turcsán ◽  
László Mészáros ◽  
Vincent Mandla Khumalo ◽  
Ralf Thomann ◽  
József Karger-Kocsis
Keyword(s):  
Block Copolymer ◽  
Fracture Behavior ◽  
Essential Work ◽  
Essential Work Of Fracture ◽  
Work Of Fracture

scholarly journals Characterization and Research on Mechanical Properties of Bamboo Plastic Composites

Polymers ◽  
2018 ◽  
Vol 10 (8) ◽  
pp. 814
Author(s):  
Yu Xian ◽  
Dongjuan Ma ◽  
Cuicui Wang ◽  
Ge Wang ◽  
Leemiller Smith ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Impact Strength ◽  
Fracture Initiation ◽  
Strength Analysis ◽  
Pulp Fiber ◽  
Essential Work ◽  
Essential Work Of Fracture ◽  
Plastic Composites ◽  
The Impact ◽  
Work Of Fracture

The focus of this study was to observe the mechanical properties of bamboo plastic composites (BPCs) with bamboo pulp fiber (BPF) or white mud (WM). The essential work of fracture (EWF) methodology was used to characterize the impact toughness of BPCs. The results revealed an increase in flexural, tensile and impact properties, when adding the BPF in the BPCs. While the flexural properties of WM-reinforced BPCs revealed increasing, there was a decrease in tensile and impact strength. In an impact strength analysis study, BPF-filled BPCs showed excellent impact property over WM-filled BPCs; scanning electron microscopy (SEM) helps to explain impact fracture behavior of BPCs. EWF analysis of impact results showed that the specific essential work of fracture (we) increased significantly with the amount of BPF used in BPCs but decreased with the increase of WM in the BPCs. There was similar variation for the non-essential plastic work (βwp) of BPCs. This result indicates that the fracture initiation and fracture propagation of BPCs are different.

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