What question did this study set out to answer?

To establish an experimental method for determining critical tearing energy in rubber-like materials by isolating true recovered elastic energy from dissipated inelastic energy.

August 10, 2021Scientific ReportsOpen Access

An experimental method for estimating the tearing energy in rubber-like materials using the true stored energy

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To establish an experimental method for determining critical tearing energy in rubber-like materials by isolating true recovered elastic energy from dissipated inelastic energy.
Modified the classical Rivlin-Thomas pure shear tear test on carbon-black-filled natural rubber by subtracting dissipated energy from total strain energy.
Evaluated dissipated energy across quasi-static cyclic pure shear tests and dynamic simple shear experiments at frequencies between 0.5 Hz and 30 Hz.
Dissipated energy followed a power-law relationship with unloading stretch rate, with viscous dissipation increasing total dissipation by approximately 35% at crack propagation rates.
The critical tearing energy was determined to be 11.2 kJ/m² using the proposed method compared to 14.5 kJ/m² via the classical method, revealing an overestimation of approximately 29% by classical calculations.

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Implication

Experimental study demonstrates that accounting for energy dissipation yields accurate tearing energy in rubber, indicating classical methods overestimate tear resistance.

Cite This Study

Elsiddig Elmukashfi (2021) studied this question.

synapsesocial.com/papers/6a93172c5e20abc4e3701baf https://doi.org/10.1038/s41598-021-95151-y

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Implication

Experimental study demonstrates that accounting for energy dissipation yields accurate tearing energy in rubber, indicating classical methods overestimate tear resistance.

An experimental method for estimating the tearing energy in rubber-like materials using the true stored energy

Key Points

Discussion

Implication

Cite This Study

An experimental method for estimating the tearing energy in rubber-like materials using the true stored energy

Key Points

Discussion

Implication

Cite This Study

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