News Archive

2024

June 9, 2024
Warm congrats, Orel Guetta!
Picture of Warm congrats, Orel Guetta!
Orel Guetta presented an excellent summary of his doctoral research, together with an awesome catering.

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May 6, 2024
SIM vs LAB - mode II
Another simulation-lab observations of dynamic mode II. let's keep in mind that whereas the printed struts have many defects, the simulated ones are perfect. Moreover, we have many specimens with various kinds of failures whereas one simulation will always give the same outcome. And yet, all in all, there's a lot of resemblance between the simulation and the actual observation(s), thanks to Yahav Boim and Dr. Amnon Shirizly.
May 2, 2024
SIM vs LAB
For those who liked the dynamic mode I experiment, here is a first synchronized simulation with a simple tensile failure strain criterion. Looks quite promising...(courtesy Yahav Boim and Dr. Amnon Shirizly)
April 19, 2024
Mode II ti64
Same specimen but loaded in mode II now. Fatigue precracked. Note the appearance of a small crack-tip plastic zone. The crack closes afterwards, to open under most probably a mode I wave reflection.
April 18, 2024
One point impact of a fatigue precracked Ti6Al4V specimen
I can't resist sharing :-) One point impact of a fatigue precracked Ti6Al4V specimen. Filmed at 1MFps with our kirana ultra high speed camera. Note the crack opening and the characteristic plastic zones that develop rapidly. Courtesy of my grad student Tamir Albik and Dr Gleb Gil Goviazin.
April 10, 2024
Warm congratulations
to the following two former graduate students who have been selected by the Department to receive awards for excellence in research. Amit Shavit (M.Sc.), co-advised with Dr. K. Shemtov Yona will receive the Nadav Shoham award for his work on the chemistry of peri-implantitis. Dr. Gleb Gil Goviazin, co-advised with Dr. Amnon Shirizly, will receive the David and Olga Pnueli award. A real source of pride!
April 3, 2024
Today was the Research Day in my department
Picture of Today was the Research Day in my department
and some of my students presented their work in progress. Here are some pics of our posters with Yahav Boim (lattices), Yehonatan Miara (dental implants) and Sagi Aharoni (bone mechanics).

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March 31, 2024
Can riot-control water cannon be lethal?
And here is the temporary link to our new paper with Prof. Jing Xie, Dr. María González García and co-authors, about the potential lethality of waterjet riot-dispersal cannon. https://authors.elsevier.com/c/1irPe4jZMhf2w
March 26, 2024
Today, we had the pleasure of hosting
high school students from Reali Matoss, Haifa, for a short introduction to Materials Mechanics. hosting high school students from Reali Matoss, Haifa
February 20, 2024
A new paper in press
in the Journal of the Mechanics and Physics of Solids, with Dr. Gleb Gil Goviazin and co-authors. In a nutshell, this study, which combines high speed photography and thermal imaging, challenges the paradigm that reactive materials' ignition results from shear, showing that normal pressure is the culprit. challenging the paradigm
February 15, 2024
Most popular paper
It is always rewarding to see one if your papers as "most popular". Here, In Extreme Mechanics Letters, "Shock energy attenuation of liquid aqueous methylcellulose hydrogels" most-popular
February 8, 2024
Let us consider now mode II loading,
Picture of Let us consider now mode II loading,
at a framing rate of 400 kfps and an impact velocity of 42 m/s. Note that this is a one point impact experiment, and the initial notch is loaded parallel to its flank(s) such as to generate mode II (shear). What is interesting is that the struts that fail initially are situated opposite the notch, which fails last. So, here too, the notch (crack) plays no significant role, just as we observed earlier in mode I. Watch on YouTube / Courtesy of Yahav Boim and Dr. Amnon Shirizly.
February 7, 2024
One point impact - diagonals lattice
Picture of One point impact - diagonals lattice
As promised, here is a first movie of the lattice aluminum structure subjected to one-point impact (not to be confused with direct impact), at a velocity of the order of 35 m/s. A notch is machined on the right side to ensure mode I loading. The trusses that break sequentially are circled in red and the framing rate is 1 million fps, which explains that this is just the onset of fracture, as other struts break later, beyond the duration of the movie (total 180 frames using our Kirana ultra high speed camera, Specialised Imaging Limited). Courtesy of @Yahav Boim and Dr. Amnon Shirizly. Stay tune for the continuation....
January 25, 2024
Our new paper is online in Experimental Mechanics
Our new paper with Gleb Gil Goviazin and J. C. Nieto Fuentes is online in Experimental Mechanics. https://rdcu.be/dwQ49 Abstract
January 24, 2024
Ofer Honen presented his results for the M.Sc. degree
Picture of Ofer Honen presented his results for the M.Sc. degree
Today, Ofer Honen presented his results for the M.Sc. degree in a very clear and focused presentation. Kudos! The fan club attended the meeting.

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