Results 111 to 120 of about 32,478 (295)

Ba7C2Al2O9: A Barium Oxide Carbide Oxoaluminate with the Structured Formula Ba7O[C2][AlO4]2

open access: yesZeitschrift für anorganische und allgemeine Chemie, Accepted Article.
The mixed‐anionic barium compound Ba7O[C2][AlO4]2 was obtained by serendipity via a high‐temperature synthesis route designed to yield "Ba5[AlC2]2". Its new crystal structure was determined from X‐ray diffraction data of selected single crystals exhibiting the orthorhombic space group Pnma with the lattice parameters a = 2264.21(16) pm, b = 597.08(4 ...
Thomas Schleid   +3 more
wiley   +1 more source

Conformal weldings in the Loewner equation and Weil--Petersson quasislit-disks [PDF]

open access: yesarXiv
A simple arc $\Gamma = \gamma(0, T]$, growing into the unit disk $\mathbb D$ from its boundary, generates a driving term $\xi$ and a conformal welding $\phi$ through the Loewner differential equation. When $\Gamma$ is the slit of a Weil--Petersson quasislit-disk $\mathbb D\setminus\Gamma$, the Loewner transform and its inverse $\Gamma \leftrightarrow ...
arxiv  

A novel transformer health state direct prediction method based on knowledge and data fusion‐driven model

open access: yesHigh Voltage, EarlyView.
Abstract Predicting the future health state of a transformer can offer early warning of latent defects and faults within the transformer, thereby facilitating the formulation of power outage maintenance plans and power dispatch strategies. However, existing prediction methods based on the structure of ‘splicing prediction and diagnosis method’ suffer ...
Peng Zhang   +5 more
wiley   +1 more source

Open-Source Software Architecture for Multi-Robot Wire Arc Additive Manufacturing (WAAM) [PDF]

open access: yesarXiv
Wire Arc Additive Manufacturing (WAAM) is a metal 3D printing technology that deposits molten metal wire on a substrate to form desired geometries. Articulated robot arms are commonly used in WAAM to produce complex geometric shapes. However, they mostly rely on proprietary robot and weld control software that limits process tuning and customization ...
arxiv  

Incident energy determination of three‐phase arc flash using magnetohydrodynamics simulations: A case study for horizontal electrodes in open‐air configurations

open access: yesHigh Voltage, EarlyView.
Abstract Arc flashes pose significant hazards to personnel working with energised power lines due to their high thermal risk, quantified by incident energy (IE) in joules or calories per area. Accurate estimation of IE is crucial for ensuring safety. The most widely employed method for estimating IE from an arc flash is outlined in IEEE Std 1584‐2018 ...
Pedro O. Bacin   +9 more
wiley   +1 more source

Fusion zone microstructure image dataset of the flux-cored and shielded metal arc welding processes

open access: yesData in Brief, 2020
This paper presents high quality (2048 × 1532 pixels) Light Microscope steel images sampled from the welding fusion zone. The microstructure images were acquired from the Design of Experiments (22 full factorial design) planned to compare two different ...
Moisés Luiz Lagares Jr   +2 more
doaj  

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