Imperial College London

ProfessorMariaCharalambides

Faculty of EngineeringDepartment of Mechanical Engineering

Professor of the Mechanics of Materials
 
 
 
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Contact

 

+44 (0)20 7594 7246m.charalambides Website

 
 
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Location

 

516City and Guilds BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Skamniotis:2017:10.1016/j.polymer.2017.03.057,
author = {Skamniotis, C and Kamaludin, MA and Elliott, M and Charalambides, M},
doi = {10.1016/j.polymer.2017.03.057},
journal = {Polymer},
pages = {167--182},
title = {A novel essential work of fracture experimental methodology for highly dissipative materials},
url = {http://dx.doi.org/10.1016/j.polymer.2017.03.057},
volume = {117},
year = {2017}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - Determining fracture toughness for soft, highly dissipative, solids has been a challenge for several decades. Amongst the limited experimental options for such materials is the essential work of fracture (EWF) method. However, EWF data are known to be strongly influenced by specimen size and test speed. In contrast to time-consuming imaging techniques that have been suggested to address such issues, a simple and reproducible method is proposed. The method accounts for diffuse dissipation in the specimen while ensuring consistent strain rates by scaling both the sample size and testing speed with ligament length. We compare this new method to current practice for two polymers: a starch based food and a polyethylene (PE) tape. Our new method gives a size independent and more conservative fracture toughness. It provides key-data, essential in numerical models of the evolution of structure breakdown in soft solids as seen for example during oral processing of foods.
AU - Skamniotis,C
AU - Kamaludin,MA
AU - Elliott,M
AU - Charalambides,M
DO - 10.1016/j.polymer.2017.03.057
EP - 182
PY - 2017///
SN - 0032-3861
SP - 167
TI - A novel essential work of fracture experimental methodology for highly dissipative materials
T2 - Polymer
UR - http://dx.doi.org/10.1016/j.polymer.2017.03.057
UR - http://hdl.handle.net/10044/1/45740
VL - 117
ER -