Results 51 to 60 of about 89,949 (297)

Convex projective structures on Gromov--Thurston manifolds

, 2006
We consider Gromov-Thurston examples of negatively curved n-manifolds which do not admit metrics of constant sectional curvature. We show that for each n some of the Gromov-Thurston manifolds admit strictly convex real-projective structures.Comment: 28 ...
Beardon, Benoist, Bridson, Choi, Ghys, Goldman, Kapovich, Michael Kapovich, Vinberg   +8 more
core   +1 more source

Effect of Oxygen Content on Surface and Subsurface Integrity During Turning of Ti–6Al–4V

Advanced Engineering Materials, EarlyView.
This study examines how oxygen content in the ambient atmosphere affects the surface and subsurface properties of Ti–6Al–4V during turning. Results show that oxygen does not influence surface roughness. However, machining in an extremely high vacuum‐adequate atmosphere increases surface hardness by up to 7.8% and induces compressive residual stresses ...
Benjamin Bergmann, Berend Denkena, Hilke Petersen, Florian Schaper   +3 more
wiley   +1 more source

An asymptotically exact theory of functionally graded piezoelectric shells

, 2023
An asymptotically exact two-dimensional theory of functionally graded piezoelectric shells is derived by the variational-asymptotic method. The error estimation of the constructed theory is given in the energetic norm.
Le, Khanh Chau
core  

Composition‐Tuned Enhancement of the Anomalous Nernst Effect in FeCo–Pt Thin Films on Rigid and Flexible Substrates

Advanced Engineering Materials, EarlyView.
Disordered (Fe50Co50)1−xPtx thin films exhibit a pronounced anomalous Nernst effect (ANE) with a strong composition dependence on both rigid and flexible substrates. The transverse thermoelectric response peaks near 22.5 at.% Pt, accompanied by enhanced αxy/σxy scaling, thermal transport, and ANE sensitivity.
Mojtaba Mohammadi, Hiroyuki Awano, Kenji Tanabe   +2 more
wiley   +1 more source

On the Influence of Antioxidants and Recycled MgO–C Source Material on the Mechanical Properties of Carbon‐Bonded Magnesia Refractories

Advanced Engineering Materials, EarlyView.
The presented study focuses on the fracture behaviour of carbon‐bonded magnesia MgO–C refractories, where environmentally friendly fructose, collagen and lignin serve as temporary binding agents. The partial substitution of the source material with recycled MgO–C reduces the fracture resistance, which can be counteracted by the additional introduction ...
Marc Neumann, Tom Weber, Jana Hubálková, Florian Kerber, Dinesh Kumar Gunasekar, Hans Jelitto, Christos G. Aneziris   +6 more
wiley   +1 more source

Study on L-Bending Springback of 45 Steel Leather Cutting Tool Coupled with Local Induction Heating

Applied Sciences
Springback error is a major obstacle in L-bending sheets via cold working. Although thermal processing can effectively reduce the springback phenomenon, it is challenging to heat the sheet globally due to the influence of working conditions.
Yuan Cheng, Heran Geng, Chao Cao, Abul Fazal M. Arif, Xinhua Liu, Junfeng Yuan   +5 more
doaj   +1 more source

Experimental Spinal Fusion With Recombinant Human Bone Morphogenetic Protein-2 Without Decortication of Osseous Elements [PDF]

, 1997
Study Design. L4-L5 intertransverse process fusions were produced with 58 μg, 230 μg, or 920 μg of recombinant human bone morphogenetic protein-2 in 20 dogs. Eleven had traditional decortication of posterior elements before insertion of the implant. Nine
Dawson, Edgar G., Delamarter, Rick B., Kabo, J. Michael, Kanim, Linda E.A., Liu, David, Sandhu, Harvinder, Toth, Jeffrey M.   +6 more
core   +1 more source

Four‐Point Bending Tests at High Temperatures on Commercial MgO‐C Refractory Bricks with and Without Recyclate Considering Different Carbon Contents

Advanced Engineering Materials, EarlyView.
Four‐point bending tests are conducted in an argon atmosphere on commercial MgO‐C brick grades with and without MgO‐C recyclate from room temperature up to 1300 °C. No detrimental effect of the MgO‐C recyclates on bending strength is found. Instead, a decisive influence of the total carbon content is observed, with lower total carbon contents ...
Alexander Schramm, Lukas Knöchel, Thomas Schemmel, Christos G. Aneziris, Anja Weidner, Horst Biermann   +5 more
wiley   +1 more source

Durability Of X10CrMoVNb9-1 Steel Tubes Under Low-Cycle Fatigue And Creep Conditions After Bending With Local Induction Heating

Archives of Metallurgy and Materials, 2015
The paper contains the results of theoretical and experimental research on the tube bending process used in the manufacturing of X10CrMoVNb9-1 steel tubes with dimensions 530 × 90 mm.
Cieśla M., Junak G., Tomczak J., Findziński R., Kawała T.   +4 more
doaj   +1 more source

Operational Characteristics of Tube Bends Made Using Local Induction Heating of the L360NE (X52) Steel [PDF]

Archives of Metallurgy and Materials, 2018
The paper presents the evaluation of utility properties of a tube bend produced by bending process using local induction heating technique. Optimal process parameters were defined on the basis of numerical simulations.
G. Junak, T. Kawała, M. Cieśla
doaj   +1 more source