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Article
Open AccessMicrostructure formation in micron-scale thin-walled Hastelloy X samples fabricated with laser powder bed fusion
Laser powder bed fusion (LPBF) has great potential for the fabricating complex geometries with improved functionality. In combination with nickel alloys such as Hastelloy X, parts produced with this technology...
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Article
Open AccessQuantitative Microstructural Characterization of Precipitates and Oxide Inclusions in Inconel 625 Superalloy Additively Manufactured by L-PBF Method
In this study, we perform quantitative characterization of precipitates and oxide inclusions in Inconel 625 additively manufactured by the laser powder-bed fusion (L-PBF) process. The application of different ...
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Article
The Laser Doppler Vibrometry in mechatronics diagnostics
The article presents the possibility to diagnose a machine — physical object — in particular diesel engine. Studies were organized to demonstrate the possibility to use LDV (Laser Doppler Vibrometry) in the fu...
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A Method for Reduction of Cogging Torque in PM Machines Using Stepped Magnets
The paper presents a general approach to minimization of the cogging torque in electrical machines using surface-mounted magnets with discrete skew angle. Two types of pole shapes, namely monotonic skewing as ...
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Chapter
An Influence of Permanent Magnet Shape on the Torque Ripple of Disc-Type Brushless DC Motors
An analysis of the torque developed by two types of the disc-type permanent magnet (PM), brushless DC motors: slotted torus motor and motor with stator salient poles is presented. The calculations were perform...
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Article
A new approach to reduction of the cogging torque in a brushless motor by skewing optimization of permanent magnets
This paper presents a new approach to the skewing optimization of permanent magnet poles in a two-phase brushless d.c. motor in order to effectively reduce its cogging torque. The effect of skewing is obtaine...
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Article
Characterization of laser-irradiated YNi2B2C surfaces by Auger electron spectroscopy
The suitability of laser ablation inductively coupled plasma mass spectrometry (LA–ICP–MS) for precise analysis of YNi2B2C has been investigated. The intensity ratios B/Y and Ni/Y were found to vary during ablat...
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Article
A study on the influence of permanent magnet dimensions and stator core structures on the torque of the disc-type brushless DC motor
This paper presents a three-dimensional analysis of the magnetic field distribution for a disc-type, double-sided, permanent magnet, brushless dc motor with a toroidal stator core. Calculations are carried ou...
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Article
Identification of cholesterol gallstones using in vitro low-fluence laser-induced fluorescence spectroscopic analysis
Identifying the chemical composition of gallstones may be important in certain cases of calculus biliary disease when planning a dissolution therapy or a fragmentation of the calculi using pulsed lasers. The p...
