Real time measurements of ductile and brittle fracture processes
Fast crack propagation in transparent materials
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| Crack propagation under quasi-static tensile of PMMA plates with notch (X axis - time, Y axis - crack length) | Crack propagation in PMMA plates with a notch under localized pulsed action on the notch faces (X axis - time, Y axis - crack length) |
We consider various problems of crack propagation in specimens of organic glass under quasi-static and dynamic loads. The method of crack registration allows to obtain the quasi-continuous time sweep of the crack trajectory in the range of 200 ns - 0.5 ms.
Behavior of particle-filled polymer composite under static and dynamic loading
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| Specimen pictures taken before ‘‘0’’ and after quasi-static tension tests: 1, 2, 3, 4. (‘‘0’’ corresponds specimen in initial state and ‘‘1, 2, 3, 4’’ are for specimens after different testing regime) | Microstructure characteristic for the neck of the specimen after tensile test. (Arrow shows direction of tensile deformation, 1 – meso-cavity.) |
