Video

The Lab That Simulates Bomb Blasts
A fascinating movie on my friend Arun Shukla’s reserach activity on dynamics of materials.
A must see!
Impact crushing of a multi-columnar structure
A multi-column structure is impacted at high velocity and collapses. The  experiment was carried out by Daniel Levy (DFL-Technion) and the framing rate, using our Kirana ultra high speed camera is 500,000 frames per second

An aluminum plate deflecting under hydrodynamic load
Photographed by fast photography at 200,000 fps (Kirana ultra high speed camera) and analyzed using 3D-DIC (digital image correlation) technique. Courtesy of Oren Rijensky – DFL

Dr. Keren Shemtov-Yona’s research
Dr. K. Shemtov-Yona presents her research on Reshet B with Anat Dolev (deceased)).

Thick aluminum plate impact
Thick aluminum plate impacted at 600 m/s. The two first plates on the right strip the projectile from its sabot, whose role is to guide the projectile in the gun bore. (framing rate 200.000 images/second).

Dynamic necking
How dynamic necking can avoid deep grooves in tensile bars (courtesy of Y. Rotbaum).

Interview with Daniel Rittel
Interview with Daniel Rittel, Professor in Mechanical Engineering at the Israel Institute of Technology, and Chair of Excellence Universidad Carlos III de Madrid-Banco Santander 2013.

Ultra high speed imaging of dynamic fragmentation and fracture
The camera (Kirana, Specialised Imaging) can take up to 180 frames at a maximum rate of 5 million frames per second.

Hysteretic heating of PMMA
A cylinder of PMMA was subjected to cyclic compressive loading. The specimen was monitored with a video camera and an infrared camera. The temperature at the center of the specimen increases steadily during the test until ultimate failure. At this point, the polymer is close to its melting point. (D. Rittel, “An investigation of the heat generated during cyclic loading of two glassy polymers. Part I: experimental”, Mechanics of Materials (2000), Vol. 32 No. 3, 131-147).

Infrared monitoring of a tensile test
A cast 316 stainless steel was subjected to low strain rate tensile testing. The specimen was monitored with a video camera and an infrared camera. Note the gradual elevation of temperature and its localization towards the end of the test. The failure locus is actually indicated by the infrared record prior to actual failure.

Experimental observation of one-point impact experiment
The motion of the impacted Charpy specimen was studied using a high speed Imacon camera (1 million frames per second). The specimen was observed to take-off from the bar at t=80 microseconds after being hit by the stress wave (D. Rittel, A. Pineau, J. Clisson and L. Rota, Experimental Mechanics, 2002).

Numerical simulation of one-point impact experiment
The transfer of energy between the instrumented bar and the Charpy steel specimen was investigated using a finite element model. Loss of contact was detected at t=73 microseconds, in excellent agreement with the experimental observation of 80 microseconds. (Y. Raitman, Mechanics Project, 2002).

Three point bend failure of a polymeric laminate
A PMMA notched beam was made of 4 layers cemented by contact glue. Three point bend loading until failure was filmed using 1000 frames per second. The discontinuous crack propagation process is clearly observed and illustrates the concept of “crack-arrester” geometry.
(E. Raz and Y. Bendavid, student project in the course Failure of Materials, 2002).

FEM study of the dynamic deformation of the Shear Compression Specimen – equivalent strain
The dynamic deformation of a steel Shear Compression Specimen, subjected to a prescribed velocity of 6.7 m/s was modeled using a finite element commercial code (ANSYS). The movie shows the total equivalent Von-Mises strain during 150 microseconds, by increments of 2 microseconds. The deforming gage has been cut longitudinally, at mid-height.
(A. Dorogoy, 2003).