Journal
MATERIALS LETTERS
Volume 159, Issue -, Pages 478-480Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2015.07.047
Keywords
Brittleness; Toughness; Polymers
Funding
- Texas Academy of Mathematics and Science (TAMS), Denton
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Materials are often characterized in terms of their toughness, though more than one definition of toughness exists. Likely the most widely recognized means of defining material toughness, denoted here as r, is by the area under the stress strain curve from a tensile test. Another important feature describing the nature of materials is that property known as brittleness, which has for a long time been much less quantitatively understood. Using a quantitative definition of brittleness provided in 2006, we demonstrate the existence of a quantitative relationship between 'r and brittleness B, valid for polymers with a very wide range of chemical structures and properties, for some polymer-based composites, and also for steel and aluminum. We provide an equation relating toughness to brittleness, while for polymers we mark the determining influence of chemical structures on the properties B and r. (C) 2015 Elsevier B.V. All rights reserved.
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