Results 21 to 30 of about 634 (239)

Microstructure‐Controlled Crack Propagation and Fracture Resistance in MoSiBTiC Alloy Revealed by Multiscale Extended Finite Element Method Modeling

Advanced Engineering Materials, EarlyView.
A two‐dimensional multiscale finite element analysis framework was established for the first‐generation MoSiBTiC alloy, and the mechanical and fracture‐related parameters of the constituent phases were calibrated through experiments and simulations. The framework provides a basis for analyzing crack propagation behavior in its complex microstructure ...
Junfeng Du, Takahiro Kaneko, Xinyu Yan, Takahito Ohmura, Kyosuke Yoshimi   +4 more
wiley   +1 more source

Giant Magneto-Resistive (GMR) Sensors for Non-Contacting Partial Discharge Detection

, 2023
Partial discharge (PD) detection is a standardized technique to qualify the insulation condition in power equipment. The main purpose of the article is to evaluate the performance of an extra high-sensitivity adapted giant magneto-resistive (xMR) sensor ...
Ghaffarian Niasar, M. (author), Chen, Y. (author), Smit, J.J. (author), Ross, Robert (author), Castro Heredia, L.C. (author)   +4 more
core   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

Advanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara, Vincent Rat, Quentin Dubreuil, Patrice Valorge, Simon Goutier, Alain Denoirjean, Olivier Messe, Céline Ruelle, Jean‐Philippe Poli   +8 more
wiley   +1 more source

An Improved Method for Performance Testing of Partial Discharge Calibrators

, 2019
Partial discharges occur because of insulation defects, when the electric field amplitude locally exceeds the dielectric strength of the cavities inside the insulating material. The thermal, chemical and electrical phenomena associated with the partial discharges are dangerous for insulation systems of high voltage equipment, as they can accelerate the
Dalibor Filipovic-Grcic, Bozidar Filipovic-Grcic, Ivan Novko   +2 more
openaire   +3 more sources

Condition Monitoring of Subsea Connectors - Partial Discharge Detection Using a High Frequency Sensor [PDF]

, 2014
This thesis discusses possible causes of failure and potential condition indicators that may be used to monitor the condition of the insulation system of a subsea connector. The main focus is to describe how high frequency capacitive couplers can be used
Myklatun, Jon Thore
core   +3 more sources

Experimental Study of High-Frequency Current Transformer for Partial Discharge Detection Using Frequency and Impulse Metrics

Metrology
This study presents a characterization method for High-Frequency Current Transformers (HFCTs) intended for partial discharge (PD) measurement in on-line acquisition systems designed for AI-based processing and clustering.
Laura Della Giovanna, Francesco Guastavino, Eugenia Torello   +2 more
doaj   +1 more source

Rogowski coil sensor in the digitization process to detect partial discharge

, 2020
This paper presents the construction of a Rogowski Coil sensor with an air core to detect partial discharge using a digital oscilloscope. Two types of sensors are used.
Murakami, Yoshinobu; Toyohashi University of Technology, Fernandez, Rudy; Universitas Andalas, Mulyadi, Syaifa; Universitas Andalas, Lestari, Asri Indah; Universitas Andalas, Waldi, Eka Putra; Universitas Andalas, Hozumi, Naohiro; Toyohashi University of Technology   +5 more
core   +1 more source

Cathodic Cage Plasma Deposition of Nanostructured Cu–Fe–Se Coatings on Poly(methyl Methacrylate)

Advanced Engineering Materials, EarlyView.
Nanostructured Cu–Fe–Se coatings are deposited on PMMA by a modified cathodic cage plasma process, enabling low‐temperature deposition on polymer substrates. A transition from discontinuous to compact morphology is observed with temperature, with optimal properties at 200°C, where improved CuFeSe2‐type bonding, lowest sheet resistance, and favorable ...
V. S. S. Sobrinho, M. Naeem, T. H. C. Costa, M. S. Libório, J. C. A. Queiroz, C. B. B. Luna, R. R. M. Sousa, P. S. Vieira, E. M. Araújo   +8 more
wiley   +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

Implementation and Analysis of a Reference Partial Discharge Measurement System

, 2019
Partial discharge (PD) detection is based on the measurement of apparent charge originated from PD in test sample. Since the measurement system configuration affects the PD measuring system response, a PD reference calibrator is the most important part ...
Karaman, İsmail, Merev, Ahmet; id_orcid
core   +1 more source