Abstract
Fracture parameters such as crack velocity à, stress intensity factor K d and a specific crack extension resistance R * were measured for Homalite-100, PMMA and epoxy in the course of fast crack propagation using a Cranz-Schardin type high speed camera. Fracture surface roughness λ was evaluated as a function of crack length a so that it could be correlated with the fracture parameters above. The results showed that none of those parameters could be uniquely related to λ. Instead, there was a good correlation between λ and a product R * à.
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Arakawa, K., Takahashi, K. Relationships between fracture parameters and fracture surface roughness of brittle polymers. Int J Fract 48, 103–114 (1991). https://doi.org/10.1007/BF00018393
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DOI: https://doi.org/10.1007/BF00018393