• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 27
  • Tagged with
  • 27
  • 23
  • 14
  • 14
  • 9
  • 9
  • 9
  • 9
  • 8
  • 8
  • 7
  • 7
  • 7
  • 7
  • 5
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Emisivita a výsledek bezdotykového měření teploty / Emissivity and Result of Non-Contacting Temperature Measurement

Kotrba, Martin January 2011 (has links)
Detailed introducition of non-contact temperature measurement and correct settings of the measurement device, which has great influence on correct temperature determination, is the aim of this diploma thesis. The experimental laboratory was established to verify dependencies by Compaq CM non-contact thermometer. Conclusions and recomendations are deduced from the measurement results and their analysis.
2

Využití termovizní techniky při výstupní kontrole napájecích zdrojů / The use of thermovision technology in output control of power supplies

Rejžek, Jan January 2013 (has links)
The aim of the thesis is to clarify the issue of non-contact surface temperature measurement with a focus on the thermal imaging cameras as a modern representative of pyrometers and thermovision technology used in the output control of power supply. To obtain the corresponding results of temperature control, it is necessary to know the exact values of emissivity of the measured materials. The experimental part of this thesis is focused on detection of emissivity of power supply parts.
3

Bezkontaktní měření povrchových teplot při obrábění kovových materiálů / Non-contact measurement of surface temperatures during machining of metal materials

Trojan, Jiří January 2015 (has links)
This Master’s thesis deals with non-contact methods of surface temperature with machining metal materials. This work contains summary of basic terms and description of thermodynamics laws. Furthermore, the work present criteria for selection suitable measuring equipment. In the second part of this work is described experiment focused on drilling technology and measurement dependence of temperature on different cutting speed for different drilling approaches. At the end are presented the results.
4

Bezdotykové měření povrchových teplot ve strojírenství / Contactless measurement of surface temperatures in mechanical engineering

Frňka, Tomáš January 2009 (has links)
The subject of this thesis is the incorporation of the contactless temperature measurement of surface temperatures among other methods of temperature measurement with the analysis of (individual) advantages and disadvantages. The study is focused on the measurement and finding alternative protective clingfilms for thermo camera “Flir SC2000” and possible ways of their usage.
5

Měření povrchových teplot ve strojírenství / Measurement of surface temperatures in mechanical engineering

Stránský, Marek January 2014 (has links)
This work deals with contact and non-contact methods of surface temperature measurement. The work contains a list and formulations of basic terms and laws of thermodynamics. Furthermore, the work deals with the description and comparison of the properties and use of certain devices for contact and non-contact surface temperature measurement. The experimental part is focused on dependence of the turning speed on the turning knife thermal stress. Subsurface thermocouples, surface thermocouples and thermovision were used for the temperature detection. The subsurface temperatures were afterwards used (as data inputs) for the inverse calculation of surface temperatures. All results obtained were then compared to each other.
6

Využití žárového nástřiku Al pro absorpční vrstvy solárních absorbérů / The use of thermal spraying Al layer for absorptive layer of solar absorbers

Urbanovský, Jan January 2015 (has links)
The thesis engage in structure of solar collectors in theoretical part. Secondly, theory of thermal spraying coating and anodizing is subscribed. In practical part of thesis is proposition of producing a spectral selective surface suitable for solar absorbers. Finally the properties of the samples are checked by thermographic camera shots.
7

Termografie ve strojírenství / Thermography in engineering

Koten, Jakub January 2016 (has links)
This work deals with non-contact measurement of surface temperatures. The aim of the first part is to explain basic terms, principles and ways of measuring temperature. Furthermore, there is an overview of thermal imagining cameras usable in industry. In the practical part there is a theoretically suggested experiment, which monitors the dependence of the surface temperature on the size of the cross-section of the workpiece during the turning under unchanged cutting conditions. Experimental measurements are executed with using thermocamera ThermaCAM SC 200 and they are evaluated in software called Researcher.
8

Využití termovizních systémů v silnoproudé elektrotechnice / Utilization of thermal systems at power electrical engineering

Strnad, Karel January 2011 (has links)
The main theme of the master's thesis is using of thermal camera to measure temperatures in electrical engineering. First are mentioned the physical principles of heat transfer. Then the thesis deals with methods of determining the correct emissivity of the measured object and in the next point with sensors designed for sensing infrared radiation, there is also part dedicated to evaluation software Report Sat Standard, which was used to evaluate the pictures taken with thermal camera SAT-HY 6800. Next part of this work is the measurement of the DC and EC motor with help of thermocamera, which took place in the electric company ATAS Nachod. Attachment to this master's thesis there is animation of EC motor created in Autodesk Inventor.
9

Přesnost bezdotykového měření teploty / Accuracy of non-contacting Temperature Measurement

Horák, Ladislav January 2011 (has links)
This master’s thesis is specialized on the influence of correct parameters of emissivity, which depends on the temperature, wavelength and ambient environment. The investigation the parameter was taken infrared non-contact thermometer MI3 from company Raytek. To improve the quality of measurement was designed and programmed measuring utility program. The program was developed in the LabView 8.5 programming environment. To obtain the true value of the measured temperature of the target was designed and constructed the touch thermometer with the resistance dependent sensor. The thermometer is connected to the communication box of infrared thermometer and contain the same program. Nowadays are the most advanced IR thermometer with fixed parameters emissivity, which is applicable just to the real body in the vicinity of the parameter emissivity 0,95. For those IR thermometers were designed correction function, which would have temperature measured at a fixed emissivity parameter 0,95 set close to the actual value of the object.
10

Měření emisivity vlhkých a suchých povrchů / Measuring of emissivity of wet and dry surfaces

Brzobohatý, Tomáš January 2012 (has links)
The objective of this thesis is to create summary of emissivity of wet surfaces, emissivity of rime surfaces and emissivity of dry surfaces. The next objective is to create materials for termovision measurement and find the use for this materials for practice. Theoretical part of thesis deals with a theory of ways of heat transfer (radiation mainly), description of emisivity concept, description of emisivity finding ways and the show emissivity of mesuared materials from avaible sources for working hypothesis. Emissivity of dry, wet and rime samples were measured as the experimental part of thesis. Experimental part of thesis consist of experiment description, working hypothesis, measuring instruments and measuring area description, measuring proces description and presentation of measured results. Obtained dependences are benefits for termovision measurent, energy evaluation and the thermal state microclimate simulations.

Page generated in 0.0546 seconds