Additive manufacturing in focus
Researchers at Carnegie Mellon university Jon Malen , Professor , Mechanical Engineering , in the United States have introduced an Carnegie Mellon . experimental method to measure melt pool To sense visible colours , the team used temperature using a single commercial colour a commercial colour camera , which has a camera during additive manufacturing . built-in Bayer filter on the sensor with two New research introduces an experimental green pixel filters for every red and blue method to measure melt pool temperature pixel filter . Because each pixel senses light using a single commercial colour camera . from only one colour , the team acquires Accurate temperature measurements of the unique measurements for each pixel . Using melt pool can be used to predict and identify a technique called demosaicing , the team defect signatures , such as keyholing , which reconstructs a full colour image and measures can lead to cracking and porosity that can the ratio between each of its colours to result in unsuitable parts . calculate the temperature .
“ Our methodology can be applied to
This novel ratiometric approach avoids any colour camera to monitor and better complications related to surface properties and understand melt pools that yield high-quality view factors that challenge the application of parts for a wide range of AM processes ,” said conventional IR imaging to AM processes .
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Peak temperatures in the melt pool helps researchers to understand material vaporisation during production while the gradient toward the tail of the melt pool helps them to understand the microstructure of the final part . Understanding the physics in the melt pool is critical to ensuring quality parts because if too much of the material vaporises or the melt pool becomes unstable , manufacturers could end up with entirely different material properties and defects that render the part unusable .
Moving forward , researchers at Carnegie Mellon plan to use this technique to understand different processes such as wire arc additive manufacturing and directed energy deposition . n
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New MoU for Innovation Centre
Tata Steel has signed a Memorandum of and development of downstream processes Understanding ( MoU ) with Imperial College with low-CO₂ , low-energy and low-cost London to set up a ‘ Centre for Innovation footprints ,” explained Imperial College in Sustainable Design and Manufacturing ’ London . in London . This Centre aims to enable the The aim is to collectively leverage acceleration of technology development Imperial ’ s engineering and design partner and deployment in strategic areas , attract ecosystem for multi-material solutions with talent and strengthen the industry-academia sustainability attained through the design of collaborative eco-system . To pursue this goal , processes for making components . Tata Steel will invest £ 10 million over four Dr . Debashish Bhattacharjee , Vice years in the Centre .
President , Technology and R & D , Tata Steel ,
“ The Centre will initially focus on four said : “ The Centre at Imperial will focus on primary themes : manufacturing for the future design and development of sustainable economy , smart manufacturing , sustainable solutions . Sustainability cannot be an afterthought , it needs to be embedded into the multi-material joining technologies and net-zero construction technologies . The production process and materials design . Centre will work on sustainable material Tata Steel is committed to pioneering manufacturing , encompassing the design disruptive technologies through active
collaboration and I look forward to engaging with an acclaimed academic institution like Imperial on the journey towards technology leadership and sustainable business growth .”
Professor Mary Ryan , Vice-Provost ( Research and Enterprise ), Imperial College London , and co-chair of the Governing Council of the Centre , added : “ Drawing on Imperial and Tata Steel ’ s combined expertise , this new Centre will work to reduce the environmental impact in steel production and in key sectors that use steel , like the clean energy sector . To create a zero-pollution future , it ’ s vital that we prioritise systematic transformation of industrial systems .” n
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Three-year cooperative agreement is signed
An agreement of cooperation and intent has been signed between Politecnico di Milano ( Polytechnic University of Milan ) and UCIMU- SISTEMI PER PRODURRE ( the Italian machine tools , robots and automation systems manufacturers ’ association ).
The Chancellor of Politecnico di Milano , Donatella Sciuto , and the President of UCIMU , Barbara Colombo , signed the agreement in the presence of UCIMU Board Members , who met at the association ’ s headquarters for the last Board Meeting of 2023 .
The Framework Agreement , which is valid for three years , is principally intended as a tool to better coordinate various initiatives involving
Donatella Sciuto . the two organisations by increasing , where possible , points of contact and activities focused on machine tools , robotics , automation , digital and additive manufacturing .
It will promote initiatives to foster knowledge of the machine tool industry among university students through funding scholarships on disciplines linked to the sector . This will include UCIMU Prizes ; the development of degree theses on topics of joint interest ; the organisation of visits by students / student groups to companies in the field and to trade fairs promoted by UCIMU as well as involvement of final-year students in tutoring activities for high-school students visiting trade shows .
The second line of action encourages cooperation on a technical-scientific level for the implementation of study and research projects of common interest . This includes national and international calls for proposals .
The agreement is also intended to develop activities aimed at highlighting employment opportunities offered by UCIMU member companies ( such as placements , internships , a traineeship service and “ Career Day ” events organised by Politecnico di Milano ). n
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