This study aims to conduct abnormality detection by applying machine learning algorithms when drilling a carbon fiber reinforced plastic laminate. In-process signals including current, thrust force, and vibration were captured during the dry experiments using 6 mm physical vapor deposit diamond-coated drill at consistent spindle speed of 6500 RPM 0.05 mm/rev. Across measurements from out-of-pro...

Aims: Rectification of a slanted continuous concrete box-girder bridge is presented in this paper. Background: Several piers due to uneven ground settlement, inducing excessive width some expansion joints and oversize sliding displacement bearings. The settlement occured the unbalanced soil load on ground. Methods: In project, reverse loading was first applied produce opposite-direction deforma...

Abstract The main purpose of this research paper is to improve the quality friction-drilled holes and formed thread by investigating influence input working parameters that have not been investigated yet on produced bores. Due lack related hardness macro- microstructure threads, experiments were conducted investigate these important issues. Finally, a tension test was performed compare performa...

Research background: Slovak energy sector is based on older strategic documents setting national interests within policy and security (before 2014). “Fit for 55 package” proposed by European Commission in July 2021 one of the most politically ambitious projects after WW2 brings crucial changes EU27 systems, especially CEE countries. Purpose article: To analyze potential impact objectives conseq...

Worldwide, photovoltaic (PV) and electric vehicles (EVs) have intensively been integrated into distribution systems. As a result, different operational issues can be observed due to PV generation variability EV stochastic characteristics. In this article, an optimal sizing approach of multiple PVs in the existence EVs is proposed. The proposed minimizes both total voltage deviations overall ene...

Rock engineering occupies an important position in the 21st century. In face of rock disasters, we are only looking for essential problems through experiments on rocks, but cannot be realized large numbers, so article uses numerical simulation software RFPA (Realistic Failure Process Analysis) 2D Basic to simulate under different size conditions numerically. this paper, a model with diameter 50...

A detailed design is presented of a tokamak power reactor with an electron cyclotron resonance heating system. Major research topics include: physics constraints imposed on the design of a reactor by the ECR wave absorption conditions; design of the high frequency (200 GHz) gyrotrons needed for plasma heating; the gyrotron power and magnet systems; a microwave transmission system in oversize wa...