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- W1996556819 abstract "A technique is proposed to estimate the energy density as fracture toughness for ductile bulk materials with an indentation system equipped with a Berkovich indenter based on the theory of plastic deformation energy transforming into the indentation energy of fracture. With progressive increase of penetration loads, the material damage is exhibited on the effective elastic modulus. A quadratic polynomial relationship between the plastic penetration depth and penetration load, and an approximate linear relationship between logarithmic plastic penetration depth and logarithmic effective elastic modulus are exhibited by indentation investigation with Berkovich indenter. The parameter of damage variable is proposed to determine the critical effective elastic modulus at the fracture point. And the strain energy density factor is calculated according to the equations of penetration load, plastic penetration depth and effective elastic modulus. The fracture toughness of aluminum alloy and stainless steel are evaluated by both indentation tests and KIC fracture toughness tests. The predicted Scr values of indentation tests are in good agreement with experimental results of CT tests." @default.
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- W1996556819 date "2011-10-01" @default.
- W1996556819 modified "2023-09-22" @default.
- W1996556819 title "An indentation technique for estimating the energy density as fracture toughness with Berkovich indenter for ductile bulk materials" @default.
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- W1996556819 doi "https://doi.org/10.1016/j.tafmec.2011.10.006" @default.
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