Results 61 to 70 of about 3,533 (260)

Microstructural Evolution and Vacancy Defect Formation in Mn–Mo–Ni RPV Steel Under Low Cycle Fatigue: Insights From EBSD and PALS

Advanced Engineering Materials, EarlyView.
Low‐cycle fatigue damage in Mn–Mo–Ni reactor pressure vessel steel is examined using a combined electron backscatter diffraction and positron annihilation lifetime spectroscopy approach. The study correlates texture evolution, dislocation substructure development, and vacancy‐type defect formation across uniform, necked, and fracture regions, providing
Apu Sarkar, Dhanadeep Dutta, G. Bharat Reddy   +2 more
wiley   +1 more source

Analysis of Winding Vibration Characteristics of Power Transformers Based on the Finite-Element Method

Energies, 2018
The winding is the core component of a transformer, and the technology used to diagnose its current state directly affects the operation and maintenance of the transformer.
Xiaomu Duan, Tong Zhao, Jinxin Liu, Li Zhang, Liang Zou   +4 more
doaj   +1 more source

A Numerical–Experimental Approach for Multi‐Matrix Fiber‐Reinforced Plastics Characterization Using Finite Element Model Updating

Advanced Engineering Materials, EarlyView.
A numerical–experimental framework is developed for characterizing multi‐matrix fiber‐reinforced polymers (MM‐FRPs) combining epoxy and polyurethane matrices. Harmonic bending tests are integrated with finite element model updating (FEMU) to simultaneously identify elastic and viscoelastic material parameters.
Rodrigo M. Dartora, Tales V. Lisbôa, Axel Spickenheuer, Rogério J. Marczak, Jakson M. Vassoler   +4 more
wiley   +1 more source

Parameter Identification Method for Transformer Winding Equivalent Networks Based on Frequency Response Analysis: A Comparative Study

Energies
Transformers are essential power transformation equipment in power systems. Winding deformation is one of the main forms of transformer winding faults, which may cause performance degradation or even overall damage to the equipment.
Ran Zhu, Fuqiang Ren, Zhaoyang Kang, Yonghao Zhang, Shujun Liu, Kaining Hou, Hongbin Wu, Jiawen Wang, Hongshun Liu, Qingquan Li   +9 more
doaj   +1 more source

Classifying Transformer Winding Deformation Fault Types and Degrees Using FRA Based on Support Vector Machine

IEEE Access, 2019
As an important part of power system, power transformer plays an irreplaceable role in the process of power transmission. Diagnosis of transformer's failure is of significance to maintain its safe and stable operation.
Jiangnan Liu, Zhongyong Zhao, Chao Tang, Chenguo Yao, Chengxiang Li, Syed Islam   +5 more
doaj   +1 more source

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

Advanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios, Anthony Gonzalez, Aleksander Aleman, Tyler Dolmetsch, Tanaji Paul, Arvind Agarwal   +5 more
wiley   +1 more source

Analysis and improvement of grounding transformer's ability to resist outlet short-circuit

电力工程技术
Currently, there are issues such as insufficient research on the physical characteristics of windings in grounding transformers under outlet short circuit conditions and a high number of damage accidents.
LI Jiayang, XIAN Richang, LI Fei, HU Yuyao, XUE Yongduan, WANG Wei   +5 more
doaj   +1 more source

Towards Defect Phase Diagrams: From Research Data Management to Automated Workflows

Advanced Engineering Materials, EarlyView.
A research data management infrastructure is presented for the systematic integration of heterogeneous experimental and simulation data required for defect phase diagrams. The approach combines openBIS with a companion application for large‐object storage, automated metadata extraction, provenance tracking and federated data access, thereby supporting ...
Khalil Rejiba, Sang‐Hyeok Lee, Christina Gasper, Martina Freund, Sandra Korte‐Kerzel, Ulrich Kerzel   +5 more
wiley   +1 more source

Dynamic behavior analysis of copper wire for predicting defects in the winding process of a motor coil

Nihon Kikai Gakkai ronbunshu
In recent years, efforts to promote energy conservation have become more active, and there is an increasing demand for high-efficiency motor coils. The efficiency of permanent magnet motors is closely related to manufacturing engineering.
Masato NAGANO, Taichi HIROSAWA, Hidefumi WAKAMATSU, Yoshiharu IWATA, Hironori SUZUKI, Takumi NAKAUE, Takahiro TANAKA   +6 more
doaj   +1 more source

A Simplified Laminar Flow Model for the Pultrusion of Glass Fiber/Polyethylene Terephthalate Commingled Yarns

Advanced Engineering Materials, EarlyView.
A simplified thermoplastic pultrusion model is developed to predict thermal fields in glass fiber/polyethylene terephthalate (GF/PET) composites with reduced computational cost. By combining effective material homogenization, validation against literature data, and Gaussian‐process‐based optimization, the study reveals how heating limits, pulling speed,
Elder Soares, Nadège Bouchonneau, Christian Jochum, Donald Radford   +3 more
wiley   +1 more source