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Collection's Items (Sorted by Submit Date in Descending order): 1 to 13 of 13
Muzika, Lukáš , Tesař, Jiří , Švantner, Michal , Skála, Jiří , Honnerová, Petra
Comparison of Methods for Emissivity Influence Suppression on Thermographic Data

Emissivity is a crucial parameter for a quantitative thermography measurement. It influences measured temperature using an infrared camera. Typically, the emissivity is handled by infrared camera software but often for more complex tasks—e.g., setting and controlling the emissivity of individual ...

Moskal, Denys , Martan, Jiří , Honner, Milan , Ballardin Beltrami, Carlos , Kleefoot, Max Jonathan , Lang, Vladislav
Inverse dependence of heat accumulation on pulse duration in laser surface processing with ultrashort pulses

Laser pulse duration is one of the important parameters that is able to dramatically change ablation efficiency. Shorter laser pulse duration leads to deeper transport of absorbed energy in subsurface material layers. Ultra-fast and non-equilibrium processes are able to remarkably affect res...

Moskal, Denys , Martan, Jiří , Honner, Milan
Scanning Strategies in Laser Surface Texturing: A Review

Laser surface texturing (LST) is one of the most promising technologies for controllable surface structuring and the acquisition of specific physical surface properties needed in functional surfaces. The quality and processing rate of the laser surface texturing strongly depend on the correc...

Tesař, Jiří , Muzika, Lukáš , Skála, Jiří , Kohlschütter, Tomáš , Honner, Milan
Measurement and Processing of Thermographic Data of Passing Persons for Epidemiological Purposes

Non-contact temperature measurement of persons during an epidemic is the most preferred measurement option because of the safety of personnel and minimal possibility of spreading infection. The use of infrared (IR) sensors to monitor building entrances for infected persons has seen a ma...

Chulkov, Arsenii , Vavilov, Vladimir , Nesteruk, Denis , Burleigh, Douglas , Moskovchenko, Alexey
A method and apparatus for inspecting large flat composite parts by using the Infrared LST technique

The principle of Line Scan Thermography (LST) was used to develop a self-propelled infrared thermographic nondestructive testing device for the inspection of large, relatively flat composite aerospace parts, such as aircraft wings. The design of the unit allowed the suppression of noise ...

Kleefoot, Max-Jonathan , Sandherr, Jens , Sailer, Marc , Nester, Sara , Martan, Jiří , Knoblauch, Volker , Kumkar, Malte , Riegel, Harald
Investigation on the parameter dependency of the perforation process of graphite based lithium-ion battery electrodes using ultrashort laser pulses

Perforation of lithium-ion battery electrodes has recently become an increasing interest in science and industry. Perforated electrodes have shown improved electrochemical properties compared to conventional, nonperforated electrodes. It has been demonstrated that through perforation, the fast-charging capability&#x...

Švantner, Michal , Lang, Vladislav , Skála, Jiří , Kohlschütter, Tomáš , Honner, Milan , Muzika, Lukáš , Kosová, Eliška
Statistical Study on Human Temperature Measurement by Infrared Thermography

Increased temperature in humans is the symptom of many infectious diseases and it is thus an important diagnostic tool. Infrared temperature measurement methods have been developed and applied over long periods due to their advantage of non-contact and fast measurements. This study deal...

Švantner, Michal , Muzika, Lukáš , Moskovchenko, Alexey , Pereira, Celeste M. C. , Das, Shumit
Repeatability study of flash-pulse thermographic inspection of carbon-fiber composite samples

Thermographic flash-pulse inspection is a popular technique of non-destructive testing (NDT) of carbon-fiber composites. Despite of an automation of the NDT methods, most of them are based on a visual inspection of indications and results of the inspections are thus influenced by the&#x...

de Goes, Wellington Uczak , Ossiansson, Mattias , Markocsan, Nicolaie , Gupta, Mohit , Honnerová, Petra , Veselý, Zdeněk
Influence of spray angle on microstructure and lifetime of suspension plasma-sprayed thermal barrier coatings

Thermal barrier coatings (TBCs) are widely utilized in gas turbine engines for power generation. In recent years, the application of TBCs in automotive has been introduced to improve engine efficiency. Low thermal conductivity and high durability are desired coating properties for both ...

Moskovchenko, Alexey , Švantner, Michal , Vavilov, Vladimir , Chulkov, Arsenii
Analyzing probability of detection as a function of defect size and depth in pulsed IR thermography

This study introduces a novel approach to the presentation of the probability of detection (POD) function in infrared (IR) thermographic nondestructive testing. The modified POD is suggested as a function of two defect parameters, namely, defect depth and lateral size. The proposed appr...

Macková, A. , Fernandes, S. , Matejíček, J. , Vilémová, M. , Holý, V. , Liedke, M.O. , Martan, Jiří , Vronka, M. , Potoček, M. , Bábor, P. , Butterling, M. , Attallah, A.G. , Hirschmann, E. , Wagner, A. , Havránek, V.
Radiation damage evolution in pure W and W-Cr-Hf alloy caused by 5 MeV Au ions in a broad range of dpa

Pure W and W-Cr-Hf alloy which are prospective materials for nuclear fusion reactors, such as DEMO, were irradiated at room temperature with 5 MeV Au2+ ions with fluences between 4 × 10e14 and 1.3 × 10e16 ions.cm-2 to generate various levels of lattice damage from about&#...

Hauschwitz, P. , Martan, Jiří , Bičišťová, R. , Ballardin Beltrami, Carlos , Moskal, Denys , Brodsky, A. , Kaplan, N. , Mužík, 1 , Štepánková, D. , Brajer, J. , Rostohar, D. , Kopeček, J. , Prokešová, Lucie , Honner, Milan , Lang, Vladislav , Smrž, M. , Mocek, T.
LIPSS-based functional surfaces produced by multi-beam nanostructuring with 2601 beams and real-time thermal processes measurement

A unique combination of the ultrashort high-energy pulsed laser system with exceptional beam quality and a novel Diffractive Optical Element (DOE) enables simultaneous production of 2601 spots organized in the square-shaped 1 × 1 mm matrix in less than 0.01 ms. By adjusting the...

Kleefoot, Max-Jonathan , Enderle, Sebastian , Sandherr, Jens , Bolsinger, Marius , Maischik, Thomas , Simon, Nadine , Martan, Jiří , Ruck, Simon , Knoblauch, Volker , Riegel, Harald
Enhancement of the wettability of graphite-based lithium-ion battery anodes by selective laser surface modification using low energy nanosecond pulses

The electrolyte filling process of battery cells is one of the time-critical bottlenecks in cell production. Wetting is of particular importance here, since only completely wetted electrode sections are working. In order to accelerate and facilitate this process, the authors of this stu...

Collection's Items (Sorted by Submit Date in Descending order): 1 to 13 of 13