Tato disertační práce s názvem „Problematika vrtání do vysokopevnostních materiálů bez procesní kapaliny“ se zabývá vývojem komplexní technologie obrábění děr do vysokopevnostních svařitelných ocelí a do precipitačně vytvrditelných nerezových ocelí bez procesní kapaliny. Na základě rešeršní analýzy dané problematiky a na základě preliminárních test...
The drilling industry faces the challenge of moving away from conventional maintenance strategies to maximise operational efficiency. This thesis introduces a holistic approach to land drilling rig Predictive Maintenance (PdM), integrating component maintenance into system-level decision-making. By taking the operations of the whole system into acc...
Abstract. Precision in surgical bone drilling is essential for restoring bones mobility and function. However, the intricate nature and fiber-reinforced composite structure of bones inherently pose drilling-induced mechanical damage to the bone surface, affecting the primary stability necessary for implant anchorage and therefore leading to implant...
Published in Journal of Physics: Conference Series
Composite material is a combination of two or more materials to obtain better properties and capabilities of the constituent materials. Applications for the use of composites can now be found in industrial equipment to household appliances. To produce these products required machining process. The aim of the study was to determine the effect of the...
The Nankai Trough is a locus of slow slip, low-frequency earthquakes, and large magnitude (Mw > 8) earthquakes. It is usually assumed that high pore pressure contributes substantially to earthquake dynamics. Hence, a thorough understanding of the hydraulic regime of the Nankai accretionary prism is needed to understand this diversity of behaviors. ...
This thesis explores using utilization of lost circulation materials (LCMs) as a remedial solution for formations (Dammam & Hartha and Mishrif) losses encountered during oil well drilling operations in different Iraqi oilfield, in different years and different formations. Losses of drilling fluids into porous formations considered as a major challe...
Published in American journal of otolaryngology
Noise-induced hearing loss in the non-surgical ear during otologic/neurotologic surgery has not been well studied. The purpose of this study was to evaluate changes in hearing that may occur in the contralateral (i.e., non-surgical) ear after various otologic/neurotologic surgeries due to noise generated by drills. We hypothesized that otologic/neu...
This thesis investigates how drilling simulators can provide a safe, cost-effective, and immersive training environment for deep drilling operations technicians. The study examines the effectiveness of drilling simulators in enhancing practical skills, safety, efficiency, and cost-effectiveness in training programs. It explores the design, implemen...
The purpose of the first generation of Eurocodes developed in the European Union was to facilitate free access to markets in other member states for construction companies and engineering consultants. Eurocode 7, dedicated to geotechnical design, was produced in 1990 by the Technical Committee for Structural Eurocodes, CEN/ TC250 SC7, "Geotechnical...
Department of Mechanical Engineering / This destination focuses on the modeling of carbon fiber-reinforced plastic (CFRP) drilling. The dexel model is utilized to understand the mechanics of drilling, considering the fiber orientation angle of the workpiece and tool. The accuracy of the model depends on the mathematical model employed in the simula...
