Hot Cracks in Rubber: Origin of the Giant Toughness of Rubberlike Materials

Carbone, Giuseppe; Persson, B. N. J.

doi:10.1103/physrevlett.95.114301

Cited by 57 publications

(37 citation statements)

References 22 publications

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“…This effect is already relevant at velocities in the range of cm=s. In addition, inertia effects might be relevant already for the observed high crack velocities in the m=s range [20,29]. Evidently, the typical, experimentally obtained value for Á is about 2-3 times higher than the Dupré energy of adhesion Á 0 , calculated from the surface energies of PVS and glass [30].…”

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confidence: 78%

Adhesion Failure at 180 000 Frames per Second: Direct Observation of the Detachment Process of a Mushroom-Shaped Adhesive

et al. 2013

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Nature has successfully evolved the mushroom-shaped contact geometry in many organisms in order to solve the attachment problem. We studied the detachment process of individual bioinspired artificial mushroom-shaped adhesive microstructures (MSAMSs) resolving the failure dynamics at high spatiotemporal resolution. The experimental data provide strong evidence for a homogeneous stress distribution in MSAMS, which was recently proposed. Our results allow us to explain the advantage of such contact geometry and provide a suggestion for the widely observed mushroom-shaped contact geometry.

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confidence: 78%

Adhesion Failure at 180 000 Frames per Second: Direct Observation of the Detachment Process of a Mushroom-Shaped Adhesive

et al. 2013

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“…In this regard, we note there is a transition observed in tear tests on rubber carried out at high crack propagation rates (~ 1 mm/s), which is associated with development of a smooth crack interface; however, this phenomenon apparently does not involve the onset of the glass transition. 3,114,115 A. WET SKID RESISTANCE OF TIRES Surface conditions exert a dominant role on the friction of rubber, 116,117 the friction coefficient varying by four orders of magnitude depending on the interface.…”

Section: Strain-induced Glass Transitionmentioning

confidence: 99%

Mechanical Behavior of Rubber at High Strain Rates

Roland

2006

Rubber Chemistry and Technology

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Methods to obtain the mechanical response of rubber at high rates of strain are reviewed. These techniques include the extrapolation of low strain, low strain rate data, the limitations of which are discussed, extrapolations to elevated hydrostatic pressure, and direct determinations using split Hopkinson bar and drop weight testers, as well as miscellaneous methods. Some applications involving rubber at strain rates sufficient to induce a transition to the glassy state are described.

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“…Previous theories based on linear fracture mechanics 5 and linear viscoelasticity 1 are unable to reproduce the velocity jump 12, 18, 19 . Although there is a theory that reproduces the jump 20 , the theory predicts an extremely high-temperature region near the crack tip whereas only a slight temperature-increase was experimentally observed 21 .…”

Section: Introductionmentioning

confidence: 99%

Exactly solvable model for a velocity jump observed in crack propagation in viscoelastic solids

Sakumichi

Okumura

2017

Sci Rep

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Needs to impart appropriate elasticity and high toughness to viscoelastic polymer materials are ubiquitous in industries such as concerning automobiles and medical devices. One of the major problems to overcome for toughening is catastrophic failure linked to a velocity jump, i.e., a sharp transition in the velocity of crack propagation occurred in a narrow range of the applied load. However, its physical origin has remained an enigma despite previous studies over 60 years. Here, we propose an exactly solvable model that exhibits the velocity jump incorporating linear viscoelasticity with a cutoff length for a continuum description. With the exact solution, we elucidate the physical origin of the velocity jump: it emerges from a dynamic glass transition in the vicinity of the propagating crack tip. We further quantify the velocity jump together with slow- and fast-velocity regimes of crack propagation, which would stimulate the development of tough polymer materials.

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Hot Cracks in Rubber: Origin of the Giant Toughness of Rubberlike Materials

Cited by 57 publications

References 22 publications

Adhesion Failure at 180 000 Frames per Second: Direct Observation of the Detachment Process of a Mushroom-Shaped Adhesive

Adhesion Failure at 180 000 Frames per Second: Direct Observation of the Detachment Process of a Mushroom-Shaped Adhesive

Mechanical Behavior of Rubber at High Strain Rates

Exactly solvable model for a velocity jump observed in crack propagation in viscoelastic solids

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