Results 151 to 160 of about 48,477 (300)

Karl Popper and the Mechanisms of Hydrogen Embrittlement

Advanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

Analysis of performance degradation during steady-state and load-thermal cycles of proton exchange membrane water electrolysis cells [PDF]

A membrane-electrode assembly based on a 90 μ m short-side-chain Aquivion ® proton exchange membrane and containing low catalyst loadings, 0.4 mg IrRuOx cm 2 and 0.1 mg Pt cm 2 at anode and cathode, respectively, is investigated for combined ...
Pantò, Fabiola, Trocino, Stefano, Siracusano, S., Aricò, A.S., Briguglio, Nicola   +4 more
core  

Microstructure Evolution of a VMnFeCoNi High‐Entropy Alloy After Synthesis, Swaging, and Annealing

Advanced Engineering Materials, EarlyView.
The synthesis and processing (rotary swaging and annealing) of the novel VMnFeCoNi alloy is investigated, alongside the estimation of the grain size effect on hardness. Analysis of a wide grain size range of recrystallized microstructures (12–210 µm) reveals a low annealing twin density.
Aditya Srinivasan Tirunilai, Zeki Ayrildi, Buse Şen, Maik Rajkowski, Mathias Redondo Garcia, Markus Stricker, Guillaume Laplanche   +6 more
wiley   +1 more source

"Physical Design of MW-class Steady-state Spherical Tokamak, QUEST"

, 2008
"QUEST (R=0.68m, a=0.4m) focuses on the steady state operation of the spherical tokamak (ST) by controlled PWI and electron Bernstain wave (EBW) current drive (CD).
Takase, Y., Yamada, H., Ogawa, Y., Yoshinaga, T., Igami, H., "Hanada, K., Yoshida, Z.", Asakura, N., Ando, A., Nakamura, K., Zushi, H., Maekawa, T., Sudo, S., Hirooka, Y., Sato, K. N., Sakamoto, M., Ono, Y., Mitarai, O., Kishimoto, Y., Idei, H., Komori, A., Matsukawa, M., Kawasaki, S., Yoshida, N., Ejiri, A., Ishiguro, M., Higashijima, A., Ohno, N., Motojima, O., Peng, M., Nakashima, H., Ishida, A., Hasegawa, M., Higashizono, Y.   +33 more
core  

Hydrogen‐Assisted Fracture of Iron‐Based Fe–Ni–Al Alloys

Advanced Engineering Materials, EarlyView.
Principal relations and fracture mechanisms of single‐phase and precipitate‐strengthened Fe–Ni–Al alloys subjected to prior electrochemical hydrogen charging are identified. The mechanisms of hydrogen effect on strength and microhardness are discussed, including hydrogen‐induced increase in microhardness and the role of hydrogen in fracture behavior ...
Nataliya Yadzhak, Olha Zvirko, Rostyslav Leshchak, Hryhoriy Nykyforchyn   +3 more
wiley   +1 more source

Switch-mode power converters : design and analysis /

, 2006
This book introduces an innovative, highly analytical approach to symbolic, closed-form solutions for switched-mode power converter circuits. This is a highly relevant topic to power electronics students and professionals who are involved in the design ...
Wu, Keng C.
core  

Creep‐Induced Microstructural Evolution in an A2‐B2 Superalloy

Advanced Engineering Materials, EarlyView.
A 27.3Ta‐27.3Mo‐27.3Ti‐8Cr‐10Al (at.%) refractory high‐entropy alloy with precipitation‐strengthened A2‐B2 microstructure was studied by creep tests at 1030°C, which demonstrate a transition in deformation mechanisms in the range of 100–150 MPa applied stress. This is associated with changes in dislocation–precipitate interactions. Relevant deformation
Liu Yang, Aparajita Pramanik, Sandipan Sen, Shubhashis Dixit, Marcel Muench, R. J. Vikram, Daniel Schliephake, Yolita M. Eggeler, Ankur Chauhan, Martin Heilmaier, Alexander Kauffmann   +10 more
wiley   +1 more source

Model-free sliding mode control for PMSM based on adaptive super-twisting reaching law. [PDF]

Sci Rep
Yao W, Li W.
europepmc   +1 more source

Influence of Test Temperature and Test Frequency on Fatigue Life of Aluminum Alloy EN AW‐2618A

Advanced Engineering Materials, EarlyView.
The influence of test temperature and test frequency on the fatigue life of EN AW‐2618A is investigated. High‐cycle fatigue tests are performed at different test temperatures and frequencies on the 1000 h/230°C overaged state. Both test parameters reduce fatigue life due to time‐dependent damage mechanisms.
Ying Han, Julian M. Rosalie, Jan Radners, Mauro Madia, Philipp von Hartrott, Birgit Skrotzki   +5 more
wiley   +1 more source

Robust speed control of permanent magnet synchronous motors using model predictive and sliding mode strategies. [PDF]

PLoS One
Meawad M, Ahmed AA, Abdelkader MI, Dessouky YG.   +3 more
europepmc   +1 more source