Results 41 to 50 of about 3,035,979 (274)

Enigmatic surface rolls of the Ellesmere Ice Shelf

Journal of Glaciology, 2022
The once-contiguous Ellesmere Ice Shelf, first reported in writing by European explorers in 1876, and now almost completely disintegrated, has rolling, wave-like surface topography, the origin of which we investigate using a viscous buckling instability ...
Niall B. Coffey, Douglas R. MacAyeal, Luke Copland, Derek R. Mueller, Olga V. Sergienko, Alison F. Banwell, Ching-Yao Lai   +6 more
doaj   +1 more source

Controlling Grain Growth in Powder Bed Fusion of Yttria‐Stabilized Zirconia Using Femtosecond Lasers: Challenges and Methodological Insights

Advanced Engineering Materials, EarlyView.
Binder‐free laser powder bed fusion of 8YSZ with a femtosecond laser is used to map process windows linking scan strategy, heat accumulation, and grain growth. Time‐resolved thermography and simulations reveal thermal regimes that enable continuous, vitrified, and fine‐grained 8YSZ surface layers without absorptive additives and demonstrate ...
Markus Kühn, Sarah Kaden, Andrea Barz, Daniel Störzner, Jens Bliedtner, Andrés Fabián Lasagni   +5 more
wiley   +1 more source

A Novel Approach to Estimate the Transition Temperature via Dynamic Nanoindentation

Advanced Engineering Materials, EarlyView.
A new dynamic nanoindentation‐based method was developed that uses the stiffness ratio as an indicator of the elastic–plastic deformation contributions at different temperatures. The approach successfully identified transition temperatures in ferritic steel and distinguished them from continuously ductile austenitic steel.
Stefan Zeiler, Nikolaus Kostwein, Ronald Schnitzer, Christian Mitterer, Verena Maier‐Kiener   +4 more
wiley   +1 more source

Analysis of rate dependency on roll force calculation during hot strip rolling based on Karman equation

Advances in Mechanical Engineering, 2019
Due to the development of thin slab hot rolling technology, hot rolling thin strip at a higher speed is inevitable. As a result of high-speed rolling, thin slab is deformed at a wide range of strain rate inside the rolling zone.
Xiawei Feng, Xiaochen Wang, Quan Yang, Jiquan Sun   +3 more
doaj   +1 more source

Characteristic points of roll contact curves of a two-roll module [PDF]

E3S Web of Conferences
Calculation formulas for finding characteristic angles that determine characteristic points of roll contact curves are obtained. It is established that external forces acting on the roll, the angular velocity of the roll, the feed rate of the material ...
Khalturaev Farkhod, Buriev Eshmurod, Nurmanov Sarvar, Mazhidov Samariddin   +3 more
doaj   +1 more source

Materials‐Driven Additive Manufacturing for Electrical Machines: Qualification‐Oriented Design Beyond Geometric Freedom

Advanced Engineering Materials, EarlyView.
This perspective reframes additive manufacturing for electrical machines as a qualification‐limited materials and architecture design problem. It links process–structure–property–performance relationships to magnetic, conducting, dielectric, and thermal property windows, highlighting where AM can enable segmented magnetic circuits, permanent magnet ...
Dénes Fodor, Loránd Szabó
wiley   +1 more source

Research on numerical simulation and process parameters of three-roll bending based on thickness characteristics of extra-thick plate

Advances in Mechanical Engineering, 2019
Mechanism of roll forming for the extra-thick plate is more complicated, which is greatly influenced by the thickness characteristics of extra-thick plate and affects the machining accuracy of the extra-thick plate.
Yan Wang, Lianlei Zhao, Ximin Cui, Xinqing Zhu   +3 more
doaj   +1 more source

Anticorrosive Performance of Smart Epoxy Coatings With Poly(urea‐formaldehyde) Microcapsules Filled With 5‐Ethylidene‐2‐norbornene

Advanced Engineering Materials, EarlyView.
PUF/ENB microcapsules were synthesized based on a sequential factorial design and incorporated into an epoxy matrix. Their anticorrosive action, associated with the self‐healing mechanism, demonstrated that the addition of microcapsules to the coating improved anticorrosive performance compared to pure epoxy coatings, particularly when the encapsulate ...
Vandicleya Alves Moreira, Maria Paula de Carvalho Freire, Ygor Matheus Pereira de Paula, Ana Leticia Santos, Alice da Costa Silva, Nicolau Apoena Castro, Maria Carolina Burgos Costa   +6 more
wiley   +1 more source

Thermal Cycle–Microstructure–Property Relationships in Rail Steel Heat‐Affected Zone Simulated by Gleeble

Advanced Engineering Materials, EarlyView.
Microstructural evolution of premium rail steel during flash butt welding (FBW), comparing physically simulated heat‐affected zones with actual weld regions. Thermal cycles induce phase transformations and microstructural heterogeneity that influence weld quality and mechanical performance. These findings provide insights into optimizing FBW parameters
Emmanoelle Cintra da Cunha Araújo, João Marcos da Silva Nunes, Marcelly Cristiny Nunes de Carvalho, Alex Rojas, Cristie Luis Kugelmeier, Cristhian Ricardo Loayza Loayza, João Carlos Ferreira, Maria Veronica Goncalves Rodrigues, Rute Sayuri Kano, Isaac Araújo Furtado, Jacyara Dalylla da Silva Nunes, Jhonatan Peres de Sousa, Marcos Natan da Silva Lima, Eden Santos Silva, Gedeon Silva Reis, Samuel Filgueiras Rodrigues   +15 more
wiley   +1 more source

BASED ON THE NUMERICAL SIMULATION OF COLD ROLL-BEATING FORMING RESIDUAL STRESS RESEARCH

Jixie qiangdu, 2019
When the load to be lifted after cold roll-beating forming the residual stress will appear, in order to effectively control its impact on the forming precision, now the relationship between roll-beating depth and the residual stresses were studied ...
CUI LiMu, XIAO JiMing
doaj