Characterization of the Loading Rate Dependent Fracture Behavior over a Wide Loading Rate Range Using Charpy Specimens

Zoltan Major; Martin Reiter

doi:10.4028/www.scientific.net/AMM.566.286

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 566Characterization of the Loading Rate Dependent...

Characterization of the Loading Rate Dependent Fracture Behavior over a Wide Loading Rate Range Using Charpy Specimens

Abstract:

The fracture behavior of engineering polymers is usually characterized at high loading rates using Charpy specimens. However, due to the presence of dynamic effects the conventional force based analysis for determining fracture toughness values is applicable only up to 1 m/s using tree point bending test configurations. This difficulty can be overcome in principle, by applying dynamic analysis methods (e.g. dynamic key curve (DKC) analysis) or by applying tensile loading fracture configurations. The applicability of pre-cracked Charpy specimens for determining fracture toughness values for polymeric materials over a wide loading rate range is investigated in this study.

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Periodical:

Applied Mechanics and Materials (Volume 566)

Pages:

286-291

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.566.286

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Online since:

June 2014

Authors:

Zoltan Major*, Martin Reiter

Keywords:

Crack Tip Opening Displacement, Dynamic Key Curve Method, Fracture Toughness, Instrumented Impact Tests, Polymer, Pre-Cracked Charpy Specimen

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References

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