Hello from Clarence Gomez

Clarence Gomez

@clarence-gomez-3lBG9B • Oct 26, 2024

Oct 26, 2024

1.4K

GOOD EVENING SIR. I WAS INVITED BY MY FRIEND CIVIL ENGINEERING ALSO THAT THIS SITE.IS VERY HELPFUL ... FOR US STUDENTS

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Clarence Gomez

@clarence-gomez-3lBG9B • Apr 7, 2013

“ For me, photography is the best way to preserve our family’s memories and time shared together. ”

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Clarence Gomez

@clarence-gomez-3lBG9B • Apr 7, 2013

Nanofoams for Better Body Armor, Blast Protection

Mar. 25, 2013 — Engineers at the University of California, San Diego are developing nanofoams that could be used to make better body armor; prevent traumatic brain injury and blast-related lung injuries in soldiers; and protect buildings from impacts and blasts. It's the first time researchers are investigating the use of nanofoams for structural protection.

"We are developing nanofoams that help disperse the force of an impact over a wider area," said Yu Qiao, a professor of structural engineering at the Jacobs School of Engineering at UC San Diego. "They will appear to be less rigid but will actually be more resistant than ordinary foams."
Researchers are in the first year of a three-year program funded by the Army Research Office. "We are getting some promising results," Qiao said. Cang Zhao, a Ph.D. student in Qiao's research group, will present the results at Research Expo April 18 on the UC San Diego campus.
The nanofoams are made up of a honeycomb, or porous, structure and are very light -- pores make up anywhere from 50 to 80 percent of the structure. Researchers have been trying to determine the optimal pore size to absorb energy from impacts. They have manufactured samples with pore sizes ranging from 10 nanometers to 10 microns. Preliminary results show that when pore size reaches tens of nanometers, the material seems to perform best. Those samples absorb energy from an impact or blast over a wider area, which makes the material more resistant to impacts and blasts. By contrast, in ordinary foams, energy is absorbed in one localized area, leading to quick failure. This problem is called "damage localization" and means that ordinary foams do not perform well to protect against impacts or blasts.
The materials are tested in Qiao's lab at the Jacobs School. Samples are placed in a testing rig powered by a gas gun and subjected to increasingly stronger impacts. Researchers then put the samples under a scanning electron microscope to examine the damage. They use extensive data analysis to determine how much energy the nanofoams absorbed during the impact tests.
The samples are also manufactured in Qiao's lab. Researchers first blend two materials together at the molecular level, then they use acid etching or combustion to remove one of the two materials, creating nano-scale empty channels in the process. Currently, the material is dry cured. During the next two years, researchers plan to apply similar principles to manufacture and test metallic and polymeric nanomaterials.
"People have been looking at preventing damage from impacts for more than a hundred years," said Qiao. "I hope this concept can provide a new solution."

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Clarence Gomez

@clarence-gomez-3lBG9B • Apr 7, 2013

i hope that this Crazyengineers will gradually help us in our difficult subjects 😀)
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Clarence Gomez

@clarence-gomez-3lBG9B • Apr 7, 2013

We're so far behind on infrastructure in this country and why we don't see it as a real job creator and benefit in this country is beyond me
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Clarence Gomez

@clarence-gomez-3lBG9B • Apr 7, 2013

any help??there is no one chatting on me??? imean??replying???i dont know how to comment in their works 👎
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Clarence Gomez

@clarence-gomez-3lBG9B • Apr 7, 2013

any one???? who couldhelp me on how to operate this site 😔
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Clarence Gomez

@clarence-gomez-3lBG9B • Apr 7, 2013

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Clarence Gomez

@clarence-gomez-3lBG9B • Apr 7, 2013

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Clarence Gomez

@clarence-gomez-3lBG9B • Apr 7, 2013

LIfe of being a Civil engineering student
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Clarence Gomez

@clarence-gomez-3lBG9B • Apr 7, 2013

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Clarence Gomez

@clarence-gomez-3lBG9B • Apr 7, 2013

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Clarence Gomez

@clarence-gomez-3lBG9B • Apr 7, 2013

CIVIL ENGINEERING STUDENTS

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Clarence Gomez

@clarence-gomez-3lBG9B • Apr 7, 2013

sir???how could i post my update in my wall??
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Clarence Gomez

@clarence-gomez-3lBG9B • Apr 7, 2013

Pensu
Cant find it....😛 Looks like we actually need more clues...😎
pls help
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Clarence Gomez

@clarence-gomez-3lBG9B • Apr 7, 2013

Praveen-Kumar
Ah... Just saw the tweet and excited to see what's gonna happen next!!! 😛
please help??? me???
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Clarence Gomez

@clarence-gomez-3lBG9B • Apr 7, 2013

Kaustubh Katdare
By the way, we've added the social sharing buttons below. Help us spread the word out there!
please help me sir??
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Clarence Gomez

@clarence-gomez-3lBG9B • Apr 7, 2013

Abhishek Rawal
Noooo! 😔
So,now I can't decode the cypher,right ?
will you please help me??
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Clarence Gomez

@clarence-gomez-3lBG9B • Apr 7, 2013

I THINK I AM OUT OF PLACE HERE 😐
#😕
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Kaustubh Katdare

@thebigk • Apr 7, 2013

Clarence Gomez
i hope that this Crazyengineers will gradually help us in our difficult subjects 😀)
Sure check out this section - #-Link-Snipped-#

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Clarence Gomez

@clarence-gomez-3lBG9B • Apr 7, 2013

THANK YOU SIR 😀
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Sanyam Khurana

@sanyam-Nl7Zqc • Apr 7, 2013

Hi !!

Welcome to CE!

Hope to learn from you and hope that you will also learn from CE 😀
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pikachu1994

@pikachu1994-UcQIIJ • Apr 7, 2013

Hi,Welcome to CE.
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Clarence Gomez

@clarence-gomez-3lBG9B • Apr 7, 2013

THANK YOU MR.
Sanyam Khurana
Hi !!

Welcome to CE!

Hope to learn from you and hope that you will also learn from CE 😀

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Clarence Gomez

@clarence-gomez-3lBG9B • Apr 7, 2013

pikachu1994
Hi,Welcome to CE.
THANK YOU SIR 😀))
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pikachu1994

@pikachu1994-UcQIIJ • Apr 7, 2013

Clarence Gomez
THANK YOU SIR 😀))
This is madam and not sir.
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Clarence Gomez

@clarence-gomez-3lBG9B • Apr 8, 2013

Sanyam Khurana
Hi !!

Welcome to CE!

Hope to learn from you and hope that you will also learn from CE 😀
GOOD EVENING 😀)
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Clarence Gomez

@clarence-gomez-3lBG9B • Apr 8, 2013

how are mam
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