@DrRobSnell

@mapphub PDRA at @msesheffield.

 Sheffield, UK
Joined August 2010
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  • Following1
  • Followers128
53Media
Working on some build speed optimisation algorithms to save resources and energy in #3Dprinting . Using some prototype mirrors as a test case, from a project with @NARIT_Thailand @mapphub @STFC_Matters @DurhamPhysics @msesheffield
Lattice sandwich mirrors in aluminium

ALT Lattice sandwich mirrors in aluminium

Lattice sandwich mirrors in aluminium

ALT Lattice sandwich mirrors in aluminium

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Forgot to mention, built at @RoyceSheffield
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New Paper Friday!!! Check out our new paper on using ML for alloy design. Super proud of Joshua Berry and all his hard work on this. doi.org/10.1002/adem.2023020…

Design and Selection of High Entropy Alloys for Hardmetal Matrix Applications Using a Coupled...

This study utilizes a combined machine learning (ML) and calculation of phase diagrams methodology to design hardmetal matrix phases for metal-forming applications. Random forest ML models are...

advanced.onlinelibrary.wiley.com
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Some lattice reinforcement experiments inspired by metallic microstructure. Trialling reinforced unit cells (like a precipitate) and a warped unit cell (to disrupt slip planes). #3dprinting #AdditiveManufacturing @mapphub @RoyceSheffield @msesheffield – at Sheffield, England
Metal lattices on a base plate

ALT Metal lattices on a base plate

Zoom in on a lattice, with some additional struts, as part of the precipitate inclusions.

ALT Zoom in on a lattice, with some additional struts, as part of the precipitate inclusions.

Misaligned lattices in the core

ALT Misaligned lattices in the core

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A little side project with @RoyceSheffield. On the (very rare) occasions a build doesn’t work, we are looking at ways to turn scrap aluminium into usable wire. @mapphub @msesheffield #AdditiveManufacturing #3DPrinting #Sustainability – at Sheffield, England
A broken part, and the small size pieces it is broken into.

ALT A broken part, and the small size pieces it is broken into.

The small bits of aluminium being fed into the machine.

ALT The small bits of aluminium being fed into the machine.

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A busy week of trial parts, testing the newly upgraded optics on the @aconity3d Mini. @mapphub @RoyceSheffield @msesheffield – at Sheffield, England
Metal AM test parts on multiple base plates.

ALT Metal AM test parts on multiple base plates.

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Huge congratulations to @ProfIainTodd, who, along with four other academics from the Faculty of Engineering at the Uni of Sheffield, has been elected as a Royal Academy of Engineering Fellow. sheffield.ac.uk/materials/ne…
Royal Academy of Engineering@RAEngNews20 Sep 2023
We're delighted to announce the 73 leading figures from the world of engineering and technology elected to our Fellowship at yesterday's AGM. Meet them all: raeng.org.uk/news/royal-acad… #RAEngFellows 🎉 🎉 🎉
Collage image of 73 headshots of new Fellows of the Royal Academy of Engineering

ALT Collage image of 73 headshots of new Fellows of the Royal Academy of Engineering

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Concluded my interest in tonight’s match after 12 minutes. England can get on with disappointing now. – at Sheffield, England
Bet winnings. 10/1 acca on cards and penalties

ALT Bet winnings. 10/1 acca on cards and penalties

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Some cylinders and basic mirrors, but complex on the inside. Manipulating the microstructure with deliberate voids, that @RoyceSheffield will HIP shut to leave an ideal surface for making a mirror. #AdditiveManufacturing #3DPrinting @mapphub @ukatc @SPIEtweets
Selection of metal AM parts

ALT Selection of metal AM parts

Selection of metal AM parts

ALT Selection of metal AM parts

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A rarity in science. Planned an experiment, ran it, everything worked and we learnt something new. Looking at how HIP treatments can alter diamond turned AM surfaces. @LunchBobs @RoyceSheffield @mapphub – at Sheffield, England
Two AM mirror samples

ALT Two AM mirror samples

XRD of mirror sample

ALT XRD of mirror sample

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Key finding - it’s not corrosion. Probably. – at Sheffield, England
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Piggybacking on some porosity experiments with some prototype lily pad inspired mirror designs. #AdditiveManufacturing #3DPrinting @mapphub @RoyceSheffield – at Sheffield, England
Lily pad array of walls on the back of a mirror

ALT Lily pad array of walls on the back of a mirror

Some metal AM mirrors

ALT Some metal AM mirrors

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Quite a simple #additivemanufacturing experiment but some satisfying results. Some model validation work using aluminium discs with varying struts. Results cover the full range, from perfect to a few struts breaking to total part failure. @mapphub @RoyceSheffield @msesheffield – at Sheffield, England
Metal discs on a base plate. Some are fine and others have been ripped apart due to stress.

ALT Metal discs on a base plate. Some are fine and others have been ripped apart due to stress.

Metal discs on a base plate. Some are fine and others have been ripped apart due to stress.

ALT Metal discs on a base plate. Some are fine and others have been ripped apart due to stress.

Metal discs on a base plate. Some are fine and others have been ripped apart due to stress.

ALT Metal discs on a base plate. Some are fine and others have been ripped apart due to stress.

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No idea what the chants are, but there’s baseball and takoyaki. – at Setagaya-ku, Tokyo
Octopus balls at the baseball

ALT Octopus balls at the baseball

Inside of Tokyo dome

ALT Inside of Tokyo dome

Outside of Tokyo dome

ALT Outside of Tokyo dome

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Building fairly boring shapes this week but lots of interesting data on the inside. Seeing how non-standard hatch patterns can improve overhangs, surface roughness and thin walls. @RoyceSheffield @mapphub @msesheffield #AdditiveManufacturing #3Dprinting
Metal AM parts featuring cubes, rhombuses and overhangs.

ALT Metal AM parts featuring cubes, rhombuses and overhangs.

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Revisiting notes from a meeting yesterday… grateful that I, if anything, included too many details.
Technical drawings, but drawn by an easily distracted child.

ALT Technical drawings, but drawn by an easily distracted child.

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A busy week of builds with the most untested parts last. Working towards stronger meta-lattices by meshing non-aligned lattices in different ways. #AdditiveManufacturing #3Dprinting – at Sheffield, England
Lattice samples

ALT Lattice samples

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Working this week on projects with @RoyceSheffield @mapphub @msesheffield @ukatc @STFC_Matters @BenThomasTi @Henrysaunders24 @ProfIainTodd – at Sheffield, England
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Investigating how to best mesh parts built with different laser parameters (hence the gaps). Plus some bonus overhang samples for a @msesheffield UG project. @mapphub @RoyceSheffield #additivemanufacturing #3dprinting – at Sheffield, England
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Some snap-off, pre-mounted weld tracks (234) that just need a quick polish. Tried a few new laser strategies to hopefully make weld track analysis faster and more useful. @RoyceSheffield @mapphub #additivemanufacturing #3Dprinting – at Sheffield, England
Cylindrical-ish shapes, designed to fit a polishing machine. Several triangle cutouts through each part to act as a housing for each weld track.

ALT Cylindrical-ish shapes, designed to fit a polishing machine. Several triangle cutouts through each part to act as a housing for each weld track.

Cylindrical-ish shapes, designed to fit a polishing machine. Several triangle cutouts through each part to act as a housing for each weld track.

ALT Cylindrical-ish shapes, designed to fit a polishing machine. Several triangle cutouts through each part to act as a housing for each weld track.

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