Results 71 to 80 of about 1,992 (213)

In Situ Micromechanical Study of Bimodal γ′–γ″ Precipitate Assemblies in Ni–Cr–Al–Nb Superalloy

Advanced Engineering Materials, EarlyView.
A Ni–Cr–Al–Nb superalloy with a bimodal γ′–γ″ precipitate distribution is developed. Composite precipitate assemblies form through heterogeneous nucleation, effectively impeding dislocation motion. Micropillar compression reveals high strength at room and elevated temperatures, governed by precipitate shearing, with coupled faulting mechanisms ...
Ujjval Bansal, Tae‐Hyeok Kang, Pyuck‐Pa Choi, Subin Lee, Christoph Kirchlechner   +4 more
wiley   +1 more source

Numerical Study on Flow and Thermal Characteristics of High‐Voltage Molten Salt Electric Heater Applied in Large‐Scale Energy Storage

Energy Science & Engineering
The overheating phenomenon is a common issue in molten salt electric heaters (MSEHs), significantly limiting their application in large‐scale energy storage systems. To address this, a three‐dimensional analysis model of a high‐voltage resistance MSEH is
Yujie Qiu, Miao Yu, Keliang Liu, Dazhuan Wu, Yuegang Shi   +4 more
doaj   +1 more source

Experimental Characterization and Constitutive Modeling of the Effect of Prior Inelastic Strain on the Viscoplastic Behavior of AD730 at 700 °C

Advanced Engineering Materials, EarlyView.
This study shows that superalloys used in aircraft engine disks become much more prone to deformation at high temperatures if they have been strained during manufacturing. This effect increases with the level of prior strain but eventually reaches a limit.
Fabio Machado Alves da Fonseca, Patrick Villechaise, Malik Durand, Arnaud Longuet, Florent Coudon, Loïc Signor, Julien De Jaeger, Dominique Eyidi, Nathalie Bozzolo, Jonathan Cormier   +9 more
wiley   +1 more source

REPARING OF TURBINE INNER CASE BY MANUAL METAL ARC WELDING

Diyala Journal of Engineering Sciences, 2020
The research consisted of performing the maintenance on the internal cover (shell) of the electric power generating unit turbine which was made of nodular cast iron that was achieved by replacing the damage part, with cast carbon steel, using manual ...
Atta Jalal Mohammed Atta
doaj  

Inverse Identification of Energy‐Dependent Laser Absorptivity in NiTi Laser Powder‐Bed Fusion via Calibrated Melt Pool Simulation

Advanced Engineering Materials, EarlyView.
A combined experimental–computational framework identifies energy‐dependent laser absorptivity for NiTi in laser powder‐bed fusion, applicable to conduction and transition modes. Single‐track experiments and thermofluid smoothed particle hydrodynamics simulations are coupled through inverse analysis of melt pool geometry.
Mohamadreza Afrasiabi, Hadi Moutablaleh, Ignatius A. Setiawan, Mehrshad Mehrpouya   +3 more
wiley   +1 more source

FRICTIONAL ELECTRICITY AND TOOL MATERIALS WEAR

Вестник Донского государственного технического университета, 2018
Thomson spatial heat sources power is determined. It is shown that the heating spatial source helps reduce the total flow quantity entering the plate, and expand heat penetration.
Anatoly A. Ryzhkin, Victoria E. Burlakova   +1 more
doaj  

Staged Return Water Temperature Control for Air-Source Heat Pumps with Phase-Change Storage: Experimental Enhancement of COP and Indoor Temperature Stability

Buildings
In the practical operation of air-source heat pump heating systems coupled with phase-change energy storage tanks, wide fluctuations in outdoor temperatures often cause issues such as excessive heating, frequent unit start–stops, and low operational ...
Mingzhi Jiang, Guohui Feng, Zhiwei Wang, Mingchao Jiang, Yongliang Fu, Run Bai   +5 more
doaj   +1 more source

Machine Learning‐Supported Analysis for Predicting and Visualizing Nonlinear Relationships Between Material Properties in Electroplated Chromium Layers

Advanced Engineering Materials, EarlyView.
This study applies machine learning regression to predict chromium layer thickness in decorative trivalent chromium electroplating, using 441 experiments from laboratory‐scale (1L) and pilot‐scale (14L) setups. Tree‐based models, particularly CatBoost, outperformed linear regression by capturing nonlinear parameter interactions (R2$R^2$ up to 0.77 ...
Christoph Baumer, Christopher Mai, Luca Eisentraut, Andreas Bund, Ricardo Buettner   +4 more
wiley   +1 more source

FRICTIONAL ELECTRICITY AND TOOL MATERIALS WEAR

Advanced Engineering Research, 2011
Thomson spatial heat sources power is determined. It is shown that the heating spatial source helps reduce the total flow quantity entering the plate, and expand heat penetration.
Anatoly A. Ryzhkin, Victoria E. Burlakova   +1 more
doaj  

Numerical modeling of coupled electromagnetic and thermal processes in the zone induction heating system for metal billets

Electrical engineering & Electromechanics
Introduction. For many modern manufacturing processes, induction heating provides an attractive combination of speed, consistency and control. Multi-inductor (zone) systems with continuous billets feed are the most promising, which keep the billet cross ...
V. Yu. Grytsiuk, M. A. M. Yassin
doaj   +1 more source