The publication of Benito Buchheim's 'Breaking Glass' video started a bit of a discussion on the physics of breaking glass. Today I spotted this video in which Shimadzu HyperVision HPV-X Camera records a breaking piece of glass at a staggering 10 MILLION frames per second. Enjoy!
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About the Author
Bart Veldhuizen
I have a LONG history with Blender - I wrote some of the earliest Blender tutorials, worked for Not a Number and helped run the crowdfunding campaign that open sourced Blender (the first one on the internet!). I founded BlenderNation in 2006 and have been editing it every single day since then ;-) I also run the Blender Artists forum and I'm Head of Community at Sketchfab.
9 Comments
Wow....that's a lot of frames... also a cool study of the dynamics of a crystaline structure fracturing.
Yep, I recently saw a 5k fps of glass breaking, it was instantaneous at that fps. So this would only really be useful for seeing the pattern, and if we wanted to do super slow motion.
In terms of 3d artistry, yes, the use of the video is very limited. Engineering wise? Knowing how glass fractures is a very big deal, it can help everything from windshields and cups to aircraft and tank armor.
Well, technically speaking, glass is not a crystaline structure, it is a liquid that flows extremely slow :)
The term would be amorphous, since there is no pattern. It's also not entirely a liquid, but something else, much like plasma isn't really a gas.
As for flowing slowly, practically everything does. In fact, you can "weld" metals without melting them using diffusion welding, which takes advantage of the fact the metals are flowing slowly (which increases as temperature increases, even when below the melting point). Creep is also an issue, and why turbines are made from expensive metals even though high temperature steel wouldn't actually melt at the combustion temperatures.
I stand corrected :)
I've also heard a theory about "liquid" glass that suggested that glass which was made 100 years ago tended to be irregular because of limited engineering ability.
When the glass was being installed, the people doing so would put the heavier end at the bottom for stability.
Then 100 years later, some people noticed that the glass was bulged at the bottom and concluded that glass slowly moves over time, when really the glass was placed that way.
"it is a liquid that flows extremely slow"
No, it is not. Why perpetuate ancient legends?
Yes. That is real breaking. Wow. It has so much detail. It is breaking dynamically, there are hundreds of shards more and also the Physics is in my example wrong. It looks like it has a constant speed directly after hit without any acceleration force.