volume 34, issue 24, P1799-1807 1994
DOI: 10.1002/pen.760342404
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Abstract: Abstract Experimental data on the standard Charpy notched impact strength (CNIS) for a large sampling of particulate‐filled and rubber‐modified polypropylenes were analyzed. To determine the significance of the CNIS for material selection and design, CNIS data were compared with fracture toughness measurements expressed as the critical strain energy release rate G′c, measured under impact loading. A scale factor representing the state of stress at the crack tip was calculated, assuming small scale yielding, C…

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