3.032 Mechanical Behavior of Materials Fall 2007 Hardness testing: Estimates of yield strength Table removed due to copyright restrictions. Please see http://en.wikipedia.org/wiki/Brinell_scale Lecture 24 (11.05.07)3.032 Mechanical Behavior of Materials Fall 2007 Instrumented Indentation: Estimates of elastic modulus and yield strength Images removed due to copyright restrictions. Please see Fig. 1 in Juliano, T. F., et al. “Multiscale Creep Compliance of Epoxy Networks at Elevated Temperatures.” Experimental Mechanics 47 (2007): 99-105. Fig. 1b in Tweedie, Catherine A., and Van Vliet, Krystyn J. “On the indentation recovery and fleeting hardness of polymers.” Journal of Materials Research 21 (December 2006): 3029-3036. dP/dh Analysis 122 2/1max 11 )( / max − ⎥ ⎥ ⎦ ⎤ ⎢ ⎢ ⎣ ⎡ − + − == s s i iP r EEA dhdP E υυβ Lecture 24
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