Results 251 to 260 of about 6,908,000 (315)

Tailoring Functional Properties of Ti–Ni–Cu Shape Memory Alloy Thin Films for MEMS Actuators

Advanced Engineering Materials, EarlyView.
A comprehensive study of critical parameters required to develop well‐performing Ti–Ni–Cu thin film shape memory alloy microactuators is provided. Materials science and device integration aspects are integrated by addressing structural and physical relationships using complementary characterization techniques as well as a practical fabrication solution
Elaheh Akbarnejad, Aleksander Kostka, Gowtham Arivanandhan, Yujiao Li, Alan Savan, Manfred Kohl, Alfred Ludwig   +6 more
wiley   +1 more source

High‐Temperature Nanoindentation of Metals: Assessing Thermal Drift, Frame Compliance, and Chemical Composition Effects on the Reported Mechanical Properties

Advanced Engineering Materials, EarlyView.
Do not let thermal drift and instrument artifacts deceive high‐temperature nanoindentation results. We compare classical Oliver–Pharr and automatic image recognition analyses across steels and a Ni alloy to quantify these effects. Accounting for artifacts reveals systematic softening with temperature, while Cr and Ni additions boost resistance ...
Velislava Yonkova, Steffen Brinckmann, Ruth Schwaiger   +2 more
wiley   +1 more source

Creep Properties and Deformation Mechanism of Additively Manufactured NiAl‐CrMo Composites

Advanced Engineering Materials, EarlyView.
Additively manufactured NiAl‐CrMo composites contain numerous interfaces and cell boundaries that control their creep response. At 700°C under high applied stress, creep is dominated by dislocation‐controlled power‐law mechanisms. At 800°C–900°C and lower stresses, creep is primarily diffusion‐controlled along cell boundaries.
Jan Vollhüter, Andreas Bezold, Johan Westraadt, Katharina Fiegl, Subham Chattoraj, Benjamin Wahlmann, Carolin Körner, Michael Mills, Mathias Göken, Steffen Neumeier   +9 more
wiley   +1 more source

Power transformer online monitoring and state assessment method based on 2DCNN-BiLSTM multi-source feature fusion. [PDF]

PLoS One
Zhang W, Liu L, Chen C, Wei S, Zhang Y, Huo Z, Li D, Yin H.   +7 more
europepmc   +1 more source

Workflow for Design of Experiments‐Based Modeling of Species Transport and Growth Kinetics in GaN Hydride Vapor Phase Epitaxy

Advanced Engineering Materials, EarlyView.
A novel workflow for investigating hydride vapor phase epitaxy for GaN bulk crystal growth is proposed. It combines Design of experiments (DoE) with physical simulations of mass transport and crystal growth kinetics, serving as an intermediate step between DoE and experiments.
J. Tomkovič, G. Lukin, H. Torkashvand, A. Kerschbaum, M. Müller, S. Besendörfer, J. Heitmann, J. Friedrich   +7 more
wiley   +1 more source

The Effects of K-BNNS Nanoparticles on PD Characteristics of Composite Aramid Paper. [PDF]

Nanomaterials (Basel)
Chen YH, Li XN, Zhang WX, Qin T, Cheng QK, Wu B.   +5 more
europepmc   +1 more source

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Reliable IoT Paradigm With Ensemble Machine Learning for Faults Diagnosis of Power Transformers Considering Adversarial Attacks

IEEE Transactions on Instrumentation and Measurement, 2023
Power transformer represents an important equipment in electric power systems. Transformers are not only a source of power outages for electric utilities, but they also affect customers because they interrupt power supplies. Transformers require frequent
Mahmoud N. Ali, Mohammed Amer, M. Elsisi
semanticscholar   +3 more sources

Dynamic Fault Prediction of Power Transformers Based on Hidden Markov Model of Dissolved Gases Analysis

IEEE Transactions on Power Delivery, 2019
Dissolved gases analysis (DGA) provides widely recognized practice for oil-immersed power transformers, and it is mainly interpreted for fault diagnosis.
Jun Jiang, Ruyi Chen, Min Chen, Wenhao Wang, Chaohai Zhang   +4 more
semanticscholar   +3 more sources

Power Transformers

Real‐Time Electromagnetic Transient Simulation of AC–DC Networks, 2018
With regard to careful philosophical arguments on the nature of social power, I feel it important take a step back and ask, “Why power?” Why is power such a charged concept that we feel obliged to argue, define, extend its analysis? What is special about
Charlie Bingham
semanticscholar   +3 more sources

Fault detection and diagnosis in power transformers: a comprehensive review and classification of publications and methods

Electric Power Systems Research, 2022
A. Abbasi
semanticscholar   +3 more sources