Jan 27

Next event: Wednesday February 17th GGD #48 Susanne Klein from HP Labs talk on ‘The colour of glass’

Susanne Klein holds a Diploma in Physics and a PhD in Medical Physics from the University of Saarland. Since 1995 she has worked and lived in the UK, first as a Royal Society Research  Assistant at the University of Bristol and then as a member of HP Labs. She has worked on colloidal liquid crystals, colloids in liquid crystals and new materials for 3D printing and is now working on optical cryptography.

suzanneKlein

 

 

 

 

 

 

 

 

 

 

‘The colour of glass’

3D-printing, along with other additive manufacturing (AM) and rapid prototyping (RP) techniques, involves building up structures in a layer-by-layer fashion based upon a computer design file.  Such techniques are well-suited to the production of one-off, complex structures that would often be difficult to produce using traditional manufacturing methods.  There has been rapid growth and interest in this field during recent years, and a range of techniques are now available which make use of many common materials such as plastic, metal, wood and ceramic. However, relatively little has been done to develop AM using glass.

Since glass was first made, thousands of years ago in Mesopotamia, it has been appreciated because of its vibrant colours. To allow a successful design and print of any glass object, these colours have to be captured and classified in such a way that they can be incorporated in the CAD design of the object and lead to the desired result in the print. The colours of architectural glass are often classified by RAL charts  or by BS4800:2100 colour codes. Both colour classification systems have been developed for paints and coatings, but are a good first approximation. What they cannot capture is, for example, that some glasses display different colours in reflection and transmission and/or the colour change occurring in glass when it is reheated. In 3D printed glass, gas inclusions are another source of colour changes. Scattering at the air/ gas interface leads to the addition of white to the underlying glass colour.

Using the CIE chromaticity coordinates, glass samples are characterized before and after processing. We used two different measurement methods to determine colour coordinates as a function of sample thickness and frit size to check how robust the results were as a function of the measurement method.

 

Details

After Suzannes presentation and any questions we will open the floor up for a discussion,  if anyone feels like they would like to bring along any ppt’s or links that they want to share for discussion then please bring it along on a USB or mail the team with info and we can share this during the discussion period.  Don’t forget – you don’t have to work in the industry or be a geek, this is a group for anyone with an interest in the subject!

Please sign up on our meetup page here MEETUP

Do come along for pre-presentation mingling as we will be there from 6.30pm. As always, we welcome men to our group, but to keep our audience predominantly female, we ask that all men are accompanied by a woman (just add a +1 on the meetup).

The food and hosting is kindly sponsored by regular GGD supporters HP, there is free parking and feel free to mail or comment on the meetup if you need a lift.

Directions to HP Lab: http://www.hpl.hp.com/downloads/HP_Labs_Bristol.pdf

Jan 13

GGD #47 Talking Grrrl Games

Constance Fleuriot & Claire Morley will be talking about Bristol’s very own Grrrl Games, a meetup for Women working in Games, or who want to get into the Games industry. GrrrlGamesLogoConstance is a regular Girl Geek DInner attendee who set up Grrrl Games to encourage more women to get involved with places like Bristol Games Hub.

Claire has been involved with Grrrl Games since it started, taught herself coding by creating an adventure game, and will showcase some of her latest projects.

MuseumFront

We are hosted by ADP for this evening, a leading payroll, time and attendance, and HR service provider. ADP are very new to Bristol and handily located in Temple Back near the centre & Temple Meads.

Sign up on our meetup page so we have an idea of numbers. There may be pizza or somesuch and non-alcoholic refreshment.

Nov 11

Next event: Thursday November 18th GGD #46 Talking Green energy with Christina Daly from OVO Energy

“Nearly everything we do revolves around energy. Most of us have heard that the risk of blackouts this winter is up. On the 4th of November National Grid announced a supply crunch alert asking companies to reduce their energy demand causing electricity prices to spike and fears that there will be widespread blackouts this Christmas.

By 2020 the UK aims to have 30% of its electricity coming from renewable sources but parts of the grid can’t handle the solar power being generated. How are the fascinating developments in smart grid, renewables, storage for electricity and in home technology going to revolutionise energy and help us meet our targets?”

Christine Daly Ovo

This month our speaker is Christina Daly. Christina works in OVO Energy in the Transformation Department looking at how OVO can better use the technology and systems available to improve customer experience and drive down cost. OVO wants to revolutionise the energy industry and is investing heavily in green & community energy as well as smart meters to bring down bills and keep it simple for the consumers. Prior to working at OVO Energy Christina worked at Accenture as a software developer and now runs coding workshops for employees in OVO in her spare time and is the champion for the Bristol@OVO CoderDojo. She holds a BAI in Computer and Electronic Engineering from the University of Dublin, Trinity College.

After Christina’s presentation we will open the floor up for a discussion as discussed in the previous ‘extraordinary’ meeting, if anyone feels like they would like to bring along any ppt’s or links that they want to share for discussion then please bring it along on a USB or mail the team with info and we can share this during the discussion period.

This month’s event will take place on Weds 18th November at Ovo Energy’s Offices at 1 Rivergate, BS1 6ED Bristol. Please sign up on our meetup page here http://www.meetup.com/Bristol-Girl-Geek-Dinners/events/226672989/

Do come along for pre-presentation mingling as we will be there from 6.30pm. As always, we welcome men to our group, but to keep our audience predominantly female, we ask that all men are accompanied by a woman.

Many thanks also to OVO energy for their sponsorship for this event.

Older posts «