Sheffield Blast
@SheffieldBlast
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Official Twitter account of the Blast & Impact Dynamics Research Group at The University of Sheffield • https://t.co/2obqB5cWRn
Sheffield, England
Joined March 2016
Experimental capabilities at the University of Sheffield Blast & Impact Laboratory: a thread
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📢 New paper in Proc Royal Society A, investigating the effect of atmospheric oxygen on the energy release and pressures generated from plastic explosives in confined spaces, with a particular focus on detonation product and binder afterburn. 🔓
royalsocietypublishing.org
Abstract. When explosives detonate in a confined space, repeated boundary reflections result in complex shock interactions and the formation of a uniform q
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Two exciting opportunities to work with me to understand and mitigate the early energy release of explosives: 🎓 Funded PhD project https://t.co/1g0q4WGFDj 💥 Research Associate role (3 years) https://t.co/Sh6nhC6TRV Come help @SheffieldBlast develop blast-absorbing materials!
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Their test setup looked like this. A bullet is fired from a fixed gun towards a target. On the way it passes through a wire grid, which triggers the detonation of a C4 charge above the bullet's path. The blast potentially deflects the bullet's path towards the ground.
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Sorry @TheSlowMoGuys, there's no C4 in this image. After detonation all the RDX explosive has changed into things like water, nitrogen and carbon monoxide. 💥 Can explosions deflect bullets, though? Let's run some numbers. 🧵 Cool high speed footage:📹 https://t.co/XF1KVZT0OQ
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What is the difference between explosions and implosions? Learn more from @Dr_SamRigby in this @IFLScience article🧨 @SheffieldBlast #blast #explosions #science
Turns out there are a lot of misconceptions about the power and appearance of destructive events. https://t.co/2tV8Pq2bNo
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Our very own @Dr_SamRigby shared his thoughts with @IFLScience on the difference between implosions and explosions
Turns out there are a lot of misconceptions about the power and appearance of destructive events. https://t.co/2tV8Pq2bNo
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THE KAKHOVKA DAM 🇺🇦 Part 3: Causes for failure Lower water levels and recent images and drone footage make it possible to assess the most likely failure mechanisms of the #KakhovkaDam in several locations. Here is why I think internal explosion(s) remain the most likely cause.🧵
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"Our degree courses are over 30% women" Next in our International Women in Engineering Day #INWED23 series is Professor Genevieve Langdon. Read below her advice for potential students who are curious about Civil and Structural Engineering. #WomenInEngineering #StudyWithUs
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We sat down with @Dr_SamRigby following @tomscott's visit earlier this month to discuss lessons learnt on public dissemination of #research, improving his teaching, and next steps for curious minds. Read the full conversation here: https://t.co/e37vZBF5wA
@SheffieldBlast
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Check out this explanatory thread from @andrew_barr, a Research Fellow in our @SheffieldBlast #research group on the Kakhovka Dam breach.
THE KAKHOVKA DAM🇺🇦 As more information becomes available on the #KakhovkaDam collapse, it will be important to understand how the structure worked.🏗️ In this thread I'll explore the barrage and power plant through section drawings, before moving on to a discussion of damage. 🧵
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An update on my #KakhovkaDam thread based on new satellite images. 🛰️
Update: I missed Maxar's new satellite images of the dam published yesterday. The water level is frustratingly still juuust a little high to see what's left of the destroyed barrage, but there are a few interesting things to note on both the barrage and HPP.
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Part 2 is now online
THE KAKHOVKA DAM 🇺🇦 Thread part 2: Damage assessment 🧵 On 6th June 2023 the #KakhovkaDam was breached, causing catastrophic flooding as the Kakhovka Reservoir rapidly drained. Now that we know how the dam worked, we can assess what's currently known about the damaged caused.
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THE KAKHOVKA DAM 🇺🇦 Thread part 2: Damage assessment 🧵 On 6th June 2023 the #KakhovkaDam was breached, causing catastrophic flooding as the Kakhovka Reservoir rapidly drained. Now that we know how the dam worked, we can assess what's currently known about the damaged caused.
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THE KAKHOVKA DAM🇺🇦 As more information becomes available on the #KakhovkaDam collapse, it will be important to understand how the structure worked.🏗️ In this thread I'll explore the barrage and power plant through section drawings, before moving on to a discussion of damage. 🧵
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You saw Tom's video, heard Sam's reflection, here is a behind-the-scenes interview with both of them on why Tom decided to work with us. You can view the original video on Tom's channel here: https://t.co/2oh7kpVkk2
@Dr_SamRigby @sheffielduni
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One more comment from me before the weekend, this time for NBC. I'm curious if the seismic data collected was sufficient for a rough assessment of yield, like was possible with Beirut.
Seismic signals captured by geologists and testimony on social media suggest a huge ground-shaking noise was heard in the early hours of Tuesday, adding to growing evidence that destruction of the Kakhovka dam was caused by explosive devices.
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I'm in the print edition (!) of The Wall Street Journal today with other UK engineers discussing the Kakhovka Dam collapse. Perhaps a thread of sketches is called for... Full story online:🔒 https://t.co/09PFTByDRM
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At Sheffield, we’re makers. We're proud of the impact we've made and continue to make. But we'll never stop finding new ways to do more. Discover our world-leading research. https://t.co/uUmdnbBn1U
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