The determination of the fracture parameters for polymers in impact | Zendy

Plati E. | Zendy; Williams J. G. | Zendy

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The determination of the fracture parameters for polymers in impact

Author(s) -

Plati E.,

Williams J. G.

Publication year - 1975

Publication title -

polymer engineering and science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.503

H-Index - 111

eISSN - 1548-2634

pISSN - 0032-3888

DOI - 10.1002/pen.760150611

Subject(s) - charpy impact test , materials science , impact energy , izod impact strength test , composite material , polymer , calibration , fracture (geology) , strain rate , range (aeronautics) , volume (thermodynamics) , stress (linguistics) , toughness , ultimate tensile strength , thermodynamics , statistics , mathematics , linguistics , physics , philosophy

A method of analysis is given by which the critical strain energy release rate G c for impact tests may be deduced for both Charpy and Izod tests from normal energy measurements. Suitable calibration factors are determined and the method is applied to a range of polymers. Very close agreement is achieved between the Charpy and Izod results except for highly ductile materials for which it was necessary to use a fully plastic analysis. The method is extended to blunt notches and it is shown that the use of a strain energy per unit volume to yielding, together with a blunt notch stress analysis, gives a good description of the results.

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