Blar i NTNU Open på forfatter "Ma, Jun"
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Low-cost tooling concepts for customized tube bending processes using hybrid design and additive manufacturing
Treffen, Helena (Master thesis, 2023)Denne oppgavens fokus vil være på den fleksible bøyeprosessen som tar plass i en rørbøyingsmaskin. Denne forminsprosessen tar inn en aluminiumsrør og bøyer det til den ønskede formen, med de rette dimensjonene. Det endelige ... -
Machine Learning (ML)-Based Prediction and Compensation of Springback for Tube Bending
Ma, Jun; Li, H; Chen, GY; Welo, Torgeir; Li, GJ (Chapter, 2021)Bent tubes are extensively used in the manufacturing industry to meet demands for lightweight and high performance. As one of the most significant behaviors affecting the dimensional accuracy in tube bending, springback ... -
A new mechanical calibration strategy for U-channel extrusions
Raknes, Christian Arne; Ma, Jun; Welo, Torgeir; Paulsen, Frode (Peer reviewed; Journal article, 2020)The extrusion process of aluminum profiles introduces dimensional variations commonly exceeding the dimensional tolerance requirements for fit-up and assembly when using automated welding processes in the automotive industry. ... -
An overview and evaluation of alternative forming processes for complex aluminium products
Welo, Torgeir; Ringen, Geir; Ma, Jun (Peer reviewed; Journal article, 2020)Many industries are facing new forces that cause upheaval in the way products are designed, engineered, produced and used. Consumer preferences in terms of personalization and customization, sustainability criteria and the ... -
Prediction and analysis of real-time forces in novel 3D flexible rotary stretch forming of complex profiles
Ma, Jun; Tronvoll, Sigmund Arntsønn; Welo, Torgeir (Peer reviewed; Journal article, 2023)Three-dimensional (3D), flexible rotary stretch bending is a new forming technology that enables manufacturing complex components, like 3D profiles with varying curvatures, thus addressing several limitations of conventional ... -
Simulation Validation of Extruded Aluminium Quenching
Vang, Petter (Master thesis, 2023)Denne masteroppgaven ser på å validere simuleringene gjort i programvaren QForm som er laget for å simulere forming av varmt metall, og spesielt ekstrudering og kjøle simuleringer. Denne valideringen vil bli gjort ved å ... -
Worldwide trends in body-mass index, underweight, overweight, and obesity from 1975 to 2016: a pooled analysis of 2416 population-based measurement studies in 128·9 million children, adolescents, and adults
Bentham, James; Di Cesare, Mariachiara; Bilano, Ver; Bixby, Honor; Zhou, Bin; Stevens, Gretchen A.; Riley, Leanne M.; Taddei, Cristina; Hajifathalian, Kaveh; Lu, Yuan; Savin, Stefan; Cowan, Melanie J.; Paciorek, Christopher J.; Chirita-Emandi, Adela; Hayes, Alison J; Katz, Joanne; Kelishadi, Roya; Kengne, André Pascal; Khang, Young-Ho; Laxmaiah, Avula; Li, Yanping; Ma, Jun; Miranda, J. Jaime; Mostafa, Aya; Neovius, Martin; Padez, Cristina; Rampal, Lekhraj; Zhu, Aubrianna; Bennett, James E.; Danaei, Goodarz; Bhutta, Zulfiqar A.; Ezzati, Majid; Abarca-Gómez, Leandra; Abdeen, Ziad A.; Hamid, Zargar Abdul; Abu-Rmeileh, Niveen M.; Acosta-Cazares, Benjamin; Acuin, Cecilia; Adams, Robert J.; Aekplakorn, Wichai; Afsana, Kaosar; Aguilar-Salinas, Carlos A.; Agyemang, Charles; Ahmadvand, Alireza; Ahrens, Wolfgang; Ajlouni, Kamel; Akhtaeva, Nazgul; Al-Hazzaa, Hazzaa M.; Al-Othman, Amani Rashed; Al-Raddadi, Rajaa; AlBuhairan, Fadia S.; AlDhukair, Shahla; Ali, Mohamed M; Ali, Osman; Alkerwi, Ala'a; Alvarez-Pedrerol, Mar; Aly, Eman; Amarapurkar, Deepak N.; Amouyel, Philippe; Amuzu, Antoinette; Andersen, Lars Bo; Anderssen, Sigmund Alfred; Andrade, Dolores S; Ängquist, Lars; Anjana, Ranjit Mohan; Aounallah-Skhiri, Hajer; Araújo, Joana; Ariansen, Inger Kristine; Aris, Tahir; Arlappa, Nimmathota; Arveiler, Dominique; Aryal, Krishna; Aspelund, Thor; Assah, Felix K.; Assunção, Maria Cecília; Aung, May Soe; Avdicová, Mária; Azevedo, Ana; Azizi, Fereidoun; Babu, Bontha V; Bahijri, Suhad; Baker, Jennifer L.; Balakrishna, Nagalla; Bamoshmoosh, Mohamed; Banach, Maciej; Bandosz, Piotr; Banegas, Jose R; Barbagallo, Carlo M.; Barcelo, Alberto; Barkat, Amina; Barros, Aluisio J.D.; Barros, Mauro V.G.; Bata, Iqbal; Biehl, Anna Månsson; Bjertness, Espen; Bjertness, Marius Bergsmark; Ekelund, Ulf; Graff-Iversen, Sidsel; Janszky, Imre; Kolle, Elin; Krokstad, Steinar; Laugsand, Lars Erik; Mathiesen, Ellisiv B.; Meisfjord, Jørgen Rajan; Meyer, Haakon E; Sen, Abhijit; Steene-Johannessen, Jostein; Vatten, Lars Johan; Wilsgaard, Tom (Journal article; Peer reviewed, 2017)Background Underweight, overweight, and obesity in childhood and adolescence are associated with adverse health consequences throughout the life-course. Our aim was to estimate worldwide trends in mean body-mass index ...