FREE UNLIMITED IMAGE HOSTING

FREE UNLIMITED IMAGE HOSTING FOR ALL.

DizinPix.com is one of the best image-hosting resources to HIDE YOUR IMAGES AND LOCK IMAGES WITH PASSWORD.

UNDERSTOOD. YUM!
Get Full Information

Groovy! These grooved patterns better mitigate shock waves

Get Full Information
15 Views

Groovy! These grooved patterns better mitigate shock waves

A team of engineers at UC San Diego has discovered a method that could make materials more resilient against massive shocks such as earthquakes or explosions. Undergraduate researchers in the structural engineering lab of Professor Veronica Eliasson used a shock tube to generate powerful explosions — at Mach 1.2 to be exact, meaning faster than the speed of sound. They then used an ultra high-speed camera to capture and analyze how materials with certain patterns fared.

Previous research from Eliasson’s lab had shown that obstacles laid out in a logarithmic spiral — picture a Nautilus shell spiraling around and around — were better able to diminish the energy of a shock wave and reduce overall damage than when arranged in other patterns. The researchers took that a step further, testing whether cutting three grooves into each side of the obstacle materials would be an even better attenuator of the shock when compared with similar obstacles laid out in a logarithmic spiral but with no grooves.

They found that these grooves did diminish the impacts of what’s called the reflected shock wave — once the initial wave has hit the spiral of obstacles and bounced back. Results were inconclusive for the initial transmitted shock wave. The researchers reported their findings in a recent issue of the journal Multiscale and Multidisciplinary Modeling, Experiments and Design.

“This research can be used in military applications and civil applications too, to design materials and buildings to better withstand high-intensity blasts,” said Christina Scafidi, one of the authors of the paper, who graduated in 2019 with a degree in structural engineering.

“The coal industry has had many fatal accidents and we believe this research presents a strong case for protecting the workers from blast waves that can easily propagate throughout an entire coal mine,” added Alexander Ivanov, a recent aerospace engineering graduate and co-author of the paper. “If the entire wall of the coal mine could be lined with these solid geometric obstacles, it could provide a cheap way to protect all of the workers in the mine.”

Story Source:

Materials provided by University of California – San Diego. Note: Content may be edited for style and length.

Get Full Information


Journal Reference:

  1. Alexander Ivanov, Nicolas Fassardi, Christina Scafidi, Tal Shemen, Veronica Eliasson. Shock wave attenuation using rigid obstacles with large- and small-scale geometrical features. Multiscale and Multidisciplinary Modeling, Experiments and Design, 2019; DOI: 10.1007/s41939-019-00053-2

Cite This Page:

University of California – San Diego. “Groovy! These grooved patterns better mitigate shock waves.” ScienceDaily. ScienceDaily, 13 September 2019. .
University of California – San Diego. (2019, September 13). Groovy! These grooved patterns better mitigate shock waves. ScienceDaily. Retrieved September 13, 2019 from www.sciencedaily.com/releases/2019/09/190913143042.htm
University of California – San Diego. “Groovy! These grooved patterns better mitigate shock waves.” ScienceDaily. www.sciencedaily.com/releases/2019/09/190913143042.htm (accessed September 13, 2019).
Get Full Information

Get Full Information
allshango

Show comments

Recent Posts

Cancer cells prefer a 'comfort cruise,' follow predictable paths of least resistance

Cancer cells prefer a 'comfort cruise,' follow predictable paths of least resistance New research from a group of Vanderbilt biomedical…

22 mins ago

Researchers use light to control high-speed chemical reactions in a new way

Researchers use light to control high-speed chemical reactions in a new way Many natural and synthetic chemical systems react and…

22 mins ago

Verdict for China's efforts on coal emissions

Verdict for China's efforts on coal emissions Researchers from China, France and the USA have evaluated China's success in stemming…

22 mins ago

The rare molecule weighing in on the birth of planets

The rare molecule weighing in on the birth of planets Astronomers using one of the most advanced radio telescopes have…

22 mins ago

Engineers develop 'blackest black' material to date

Engineers develop 'blackest black' material to date With apologies to "Spinal Tap," it appears that black can, indeed, get more…

22 mins ago

India Vs South Africa 1st T20I in Dharamsala, Live Score: Rain delays toss, as both teams eye winning start

oi-Avinash Sharma New Delhi, Sep 13: Team India take on South Africa in the first Twenty20 International at Himachal Pradesh…

2 hours ago