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Modern engineering applications continually strive to develop greater performance mechanical components with good microstructural stability, improved mechanical properties, corrosion resistance and decreased cost of repairing and maintenance.This necessitates the broad use of advanced high performance materials like high entropy alloys (HEAs).These
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Among major nondestructive testing technologies (NDT), such as X-ray and ultra-sound, Terahertz (THz) waves present significant transmission rate through most of nonconductive materials without the need of applying couplant while posing zero ionized radiation hazard.In Shower Shelf comparison to microwave NDT, terahertz technology boasts a superior
In this paper, a novel adaptive second-order sliding mode (2-SM) control approach, based on online zero-crossing detection, was proposed to solve the problems of the chattering and fixed control gain for buck converters with multi-disturbances.In modeling, the possible parameter perturbations and external disturbances of the converter system were c