pkgem Posted August 31, 2009 Share Posted August 31, 2009 Hi, I am doing an assignment for my final project for my Open University Chemisty degree. I am doing it on cellulose bionanocomposites. I'm doing ok with the "normal" chemistry but I am struggling with some of the materials science. Some of the papers I have researched report upon the "strain-to-failure" of the bionanocomposite films they have produced. I know that strain-to-failure measures the amount of strain a solid material can withstand before it "fails", is calculated from measurements gained from stress-strain curves and is expressed as a percentage. What I don't understand is what the percentage is actually measuring - what is it a percentage of? I have performed google searches and looked through the material science books I have to hand but have received no joy. Please can anyone help or advise me? Many thanks, Gemma Link to comment Share on other sites More sharing options...
Mokele Posted September 4, 2009 Share Posted September 4, 2009 It's just like strain - percent elongation. If you have a strain-to-failure of 3%, that means a 10cm sample will be 10.3 cm long when it breaks. Link to comment Share on other sites More sharing options...
pkgem Posted September 5, 2009 Author Share Posted September 5, 2009 Thanks Mokele! I actually managed to find a colleague who helped me with this but your input has just clarified the my ultimate realisation that strain-to-failure is the same as elongation-at-break. So, many thanks for responding - just the help I needed at just the right time! Link to comment Share on other sites More sharing options...
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