CTU Publishing Activity
Now showing items 1-20 of 909
-
High-pressure flank cooling and chip morphology in turning Alloy 718
(Elsevier B.V., 2021)The use of cutting fluids is commonly considered a necessity while machining Heat Resistant Super Alloys (HRSA). Specifically, cutting fluids applied under high-pressure, which for many decades have been the solution for ... -
Drive axis controller optimization of production machines based on dynamic models
(Springer, 2021)The paper deals with the creation and implementation of a methodology for optimizing the parameters of cascade control of the machine tool axis drives. The first part presents the identification of a dynamic model of the ... -
Design of Two-Axial Actuator for Controlled Vibration Damper for Large Rams
(MDPI AG, 2021)Machine tool rams are important constructional elements found on vertical lathes as well as on many other machines. In most cases, a machine tool ram constitutes an assembly with significant dynamic compliance that affects ... -
An Experimental Investigation of Controlled Changes in Wettability of Laser-Treated Surfaces after Various Post Treatment Methods
(MDPI, 2021)In this paper, a quick nanosecond laser micro structuring process was employed to change the surface wettability of Ti6Al4V alloy. The same laser structuring method was used throughout, but with varying input fluence. The ... -
Effects of cooling systems on the thermal behaviour of machine tools and thermal error models
(Ed. Inst. of the Wroclaw Board of Scientific Technical Societies Federation NOT, 2020)Achieving a high workpiece accuracy is a long-term goal of machine tool (MT) designers. There are many causes of workpiece inaccuracy, with thermal errors being the most dominant. Redesign of MT structure, heat flux control, ... -
Cutting temperature measurement in turning of thermoplastic composites using a tool-work thermocouple
(Springer, 2021)Turning of carbon fibre reinforced thermoplastic pipes is used for production of fluid ducts for the aerospace and oil industries. Although thermoplastics are chemically stable, the matrix could be affected by the heat ... -
Postprocessor for Verification of Robot Movements with Additional Axis after Toolpath Optimization
(Elsevier B.V., 2021)This paper discusses a postprocessor for milling robots connected to additional linear machine axes where toolpath is optimized with respect to variable properties of the robot in its workspace. A toolpath optimization ... -
Optimization of Tool Axis Orientations in Multi-Axis Toolpaths to Increase Surface Quality and Productivity
(Elsevier B.V., 2021)This paper deals with a method to optimize tool axis orientations in multi-axis milling toolpaths. The method is based on calculation of the actual cutting diameter and the cutting speed during the toolpath. Subsequently, ... -
Experimental Study of the Volumetric Error Efect on the Resulting Working Accuracy—Roundness
(Multidisciplinary Digital Publishing Institute (MDPI AG), 2020)Currently, various types of software compensations are applied to machine tools. Their aim is to increase the working accuracy of the tools. The improvement in working accuracy is then further assessed according to the ... -
Er3+/Yb3+ doped active optic Y splitter realized by diffusion waveguides with Ag+-Na+ ion exchange
(Springer, 2021)We reported on the active channel waveguides, formed in novel types of silicate glasses, doped with rare-earth elements, and Zn were investigated. The silicate glass GZ4 with Er3+ and Yb3+ content was studied, and the best ... -
Zohlednění nepřímých teplotních zatížení při posuzování ŽB konstrukcí po požáru
(Department of Concrete and Masonry Structures, 2021)Článek se zabývá problematikou posuzování ŽB konstrukcí během požáru a po jeho skončení. Jsou zde popsány zjednodušené výpočetní metody, které jsou založeny na zohlednění poškození materiálu vlivem vysokých teplot a ... -
Improvement on mechanical and flame retardancy behaviour of bio-exfoliated graphene-filled epoxy/glass fibre composites using compression moulding approach
(Springer, 2021)Bio-reduction of composite materials is the modern approach to facilitate the researchers to avoid toxic chemical exposure during reduction process. In this study, the green reduction of graphene oxide using Abutilon indicum ... -
Changes of intraocular lens position induced by Nd:YAG capsulotomy
(Univerzita Palackého v Olomouci, 2021)Aims. The aim of this study was to evaluate the changes in IOL position (axial shift, tilt and decentration) in the capsular bag after Nd:YAG laser capsulotomy and to create a user-friendly software that is optimized for ... -
Relation between Test Coverage and Timed Automata Model Structure
(Springer International Publishing, 2021)This paper deals with problematics of structure of Timed Automata models suitable for Model-Based Testing of automotive systems. Previous ex-periments, primarily focused on the environmental models, have shown that their ... -
Statistical-Based Control Points Selection for Indoor Illuminance Measurement
(IEEE, 2020)The distribution of indoor illuminance affects the health and the performance of humans, and is therefore subject to audits. Audits are performed after each modification of the light sources, and the currently adopted ... -
Enhancement of Specialised Vertical Turning Lathe Accuracy Through Minimisation of Thermal Errors Depending on Turning and Milling Operations
(MM Science Journal, 2021)Achieving high workpiece accuracy is a long-term goal of machine tool designers. There are many causes of workpiece inaccuracy, with thermal errors being the most dominant. Indirect compensation (using predictive models) ... -
Smart Sensor for Enhancement of a Multi-Spindle Automatic Lathe Thermal Error Compensation Model
(MM Science Journal, 2021)The development of a smart sensor is proposed to improve the thermal error compensation model of a multi-spindle automatic lathe. The smart sensor is capable of gathering real-time information about rotating spindle drum ... -
Subjective Video QoE with a Hybrid Cognitive-motor Task
(IEEE, 2021)This paper reports on the subjective video quality analysis with and without a parallel task. It aims to understand how the quality perceived by the human observer brain is affected when the subject is not entirely focused ... -
Unsupervised Construction of Task-Specific Datasets for Object Re-identification
(Association for Computing Machinery, 2021)In the last decade, we have seen a significant uprise of deep neural networks in image processing tasks and many other research areas. However, while various neural architectures have successfully solved numerous tasks, ... -
Boolean subalgebras of orthoalgebras
(Springer, 2019)We develop a direct method to recover an orthoalgebra from its poset of Boolean subalgebras. For this a new notion of direction is introduced. Directions are also used to characterize in purely order-theoretic terms those ...
RSS 1.0