Interdisciplinary

Services

• Environmental testing (temperature, humidity, vibration)
• Material lifetime and durability testing
• Functional testing of equipment
• Long-term aging of insulating materials under thermal stress and/or AC, pulsed voltage
• Accredited testing*
  • The Electrical Engineering Laboratory (ETL) is accredited by the Czech Accreditation Institute (CAI).

Equipment

• Thermal shock test chamber: rapid temperature change rate (-80 °C / +220 °C)
• 180-liter climate chamber: -70 °C to +180 °C, 10% to 98% RH
• 600-liter climate chamber: -70 °C to +180 °C, 10% to 98% RH, with combined climate and vibration testing capabilities
• Corrosion test chamber: condensation test and salt spray test
• Noxious/harmful gas test chamber: up to 4 gases (Cl₂, SO₂, NOₓ, H₂S)
• 10 kN vibration test bench / shaker: vertical and horizontal axis testing
• Muffle furnace: temperatures up to 1350 °C
• Combined insulation aging system: AC voltage (24 kV), pulsed voltage (±5 kV), and thermal stress up to 300 °C

Services

• Precise dimensional measurement at 5–150,000× magnification
• Non-contact surface roughness measurement at 150–150,000× magnification
• 3D surface reconstruction
• Preparation of materialographic / metallographic cross-sections
• EDS elemental analysis
• 2D X-ray inspection
• 3D computed tomography (CT)

Equipment

• Olympus LEXT OLS3000 laser confocal microscope: max. magnification 14,400×, X/Y resolution 120 nm, Z resolution 50 nm, color 3D surface reconstruction, surface roughness measurement
• Scanning electron microscope (SEM): max. magnification 100,000×, resolution 17 nm, energy-dispersive X-ray spectroscopy (EDS) elemental analysis, element mapping, and line scan analysis
• Atomic force microscope (AFM): max. magnification 150,000×, resolution down to 1 nm, max. area 20 × 20 × 3 µm, contact and non-contact modes, 3D surface reconstruction
• GE phoenix v|tome|x s 240 computed tomography (CT) system: maximum detail detectability 1 µm, max. sample diameter 250 mm, max. sample height 400 mm, max. sample weight 10 kg
• Fluorescence microscope: max. magnification 3,200×, fully motorized stage, high-sensitivity camera, image analysis

Services

• Measurement of phase transitions (glass transition temperature Tg, crystallization temperature Tc, melting temperature Tm, oxidation stability, etc.)
• Measurement of enthalpy of chemical reactions (enthalpy of curing, crosslinking, melting, decomposition, etc.)
• Analysis of curing/crosslinking degree of thermosets and thermoplastics
• Analysis of kinetic parameters of chemical reactions (determination of activation energy, pre-exponential factor, reaction rate constant)
• Measurement of coefficient of linear thermal expansion (CTE)
• Measurement of mechanical properties via dynamic mechanical analysis
• Measurement of thermal mass / weight stability of materials
• Determination of inorganic or organic filler content
• Density measurement of solid and liquid samples
• Evolved gas analysis during thermal decomposition of materials
• Analysis of aging products in electrical insulating liquids: detection of oxidation and nitration products, antioxidant content level testing
• Compositional analysis of solid and liquid materials (qualitative analysis)
• Quality control of manufacturing and incoming material supply, contamination analysis

Equipment

• TA Instruments DSC Q2000 differential scanning calorimeter (DSC): temperature range -90 °C to 550 °C, modulated DSC (MDSC) capability, equipped with a UV light source for UV-curing analysis of thermosetting materials
• TA Instruments SDT Q600 simultaneous thermal analyzer (STA): temperature range ambient to 1500 °C, allows simultaneous measurement of mass change (TGA) and heat flow (DSC) during sample heating, hyphenated with an FTIR spectrometer for evolved gas composition analysis throughout testing
• TA Instruments TMA Q400EM thermomechanical analyzer (TMA): temperature range -150 °C to 1000 °C, with dynamic TMA (DTMA) capability
• TA Instruments DMA Q800 dynamic mechanical analyzer (DMA): temperature range -150 °C to 600 °C, equipped with fixtures for single/dual cantilever, 3-point bending, shear, tension, and compression modes
• Thermo Scientific Nicolet 380 Fourier-transform infrared spectrometer (FTIR): spectral range 400–4000 cm⁻¹, equipped with accessories for ATR, transmission, and coupled TGA-FTIR modes
• Radwag XA 52/2X analytical balance: mass range 1 mg to 52 g

Services

• Analysis of stationary and non-stationary (transient) electromagnetic fields in linear and non-linear media, including associated field effects (electromagnetic forces, insulation system stress, calculation of integral parameters, etc.)
• Solution of coupled multiphysics problems: electromagnetic-metallurgical phenomena, particularly models featuring variable geometry and phase changes (cladding/surfacing, welding, keyhole phenomena)
• Solution of magnetohydrodynamic (MHD) problems and electromagnetic stirring of molten metals
• Application of integral equations for electromagnetic field analysis
• Optimization problems in electrical engineering (using single- and multi-parameter optimization methods)

Equipment

• Agros Suite: comprehensive environment for modeling multiphysics problems and optimization
• Ansys Maxwell: simulation platform focused on low-frequency electromagnetic fields
• COMSOL Multiphysics: software platform designed for modeling and simulating complex multiphysics problems
• CST Studio Suite: high-frequency electromagnetic simulation package for the design and analysis of components and systems
• MATLAB: technical computing environment for modeling, algorithm development, simulation, data analysis/visualization, parallel computing, measurement, signal processing, and control/communication system design
• Simulink: graphical environment for modeling, simulating, and designing dynamic systems
• LabVIEW: graphical programming environment for designing measurement, data acquisition, and control systems

Services

• Development of custom applications for computer analysis of physical fields and coupled problems according to customer requirements
• Parametric studies and optimization of equipment under development
• Development of scalable distributed applications suitable for execution on large computing clusters
• Mobile application development on Android, Java, and Qt platforms
• Cross-platform application development for Windows, Linux, and macOS operating systems using the Qt framework

Equipment

• In-house Agros Suite simulation platform: solver for physical fields described by partial differential equations, based on advanced high-order finite element methods (hp-FEM) with automatic space and time adaptivity
• Development environments for C/C++, Java, and Python
• PowerEdge R730 high-performance computing cluster: 8× Intel Xeon E5 processors (total of 128 cores and 2.5 TB RAM, performance exceeding 15 GFLOPS)
• Physical field modeling software: Agros Suite, COMSOL Multiphysics, CST Studio Suite, Ansys Maxwell
• General-purpose technical software and environments: MATLAB, GNU Octave, Wolfram Mathematica, Python, C/C++

Services

• Measurement and analysis of surface temperature distribution across various systems
• Non-contact temperature measurement of electrical machines and energized systems
• Temperature measurement and functional performance analysis of heating system radiators
• Measurement of thermal signatures of short circuits and contact resistances
• Thermal inspection of exterior insulation and facades, and evaluation of building thermal insulation quality
• Detection of heat losses in building structures and insulation materials
• Analysis of indoor temperature fields regarding water condensation risks

Equipment

• Fluke Ti55FT thermal imaging camera: radiometric non-contact thermal imaging
• Omega OSXL689 pyrometer: non-contact spot temperature measurement
• Omega MWTC system: contact temperature measurement with wireless data transmission
• NI DAQ 9213 DAQ module / measurement card: multichannel temperature data acquisition
• Heatmaster HM190 thermocouple attachment unit / welding kit

Services

• Comprehensive development of linear electromechanical actuators
• Mathematical modeling and simulation of the dynamic behavior of electromechanical actuators
• Design optimization of electromechanical actuators
• Development and implementation of control algorithms for linear electromechanical systems
• Comprehensive testing and diagnostics of DC and AC linear electromechanical actuators (power circuit parameter measurement, magnetic flux density measurement and mapping, temperature rise testing)
• Measurement of static and dynamic actuator characteristics

Equipment

• Load cells / force sensors for tension and compression force measurement in the 0–1 kN range with 1 N accuracy
• MARK-10 ES30E test stand: force measurement up to 1 kN over a maximum travel distance of 330 mm
• Marcator 1088 W digital indicator: 25 mm measuring range, 1 µm resolution
• Basler acA2000-340km high-speed camera: 340 fps frame rate at 2 MP resolution, paired with linear accelerometers
• Agilent HP 4263B RLC meter: resistance, inductance, and capacitance measurement with 0.1% accuracy across a frequency range of 20 Hz to 1 MHz
• Elimag MP-1 teslameter: static and quasi-static magnetic flux density measurement in the range of 10 mT to 2 T with up to 0.1 mT accuracy

Services

• Noise measurement and frequency analysis of sound in the audible range (FFT and 1/n-octave band analysis)
• Sound power measurement in free-field environments and via sound intensity techniques
• Sound intensity measurement and sound source localization using sound intensity mapping
• Parameter measurement of electroacoustic transducers
• Measurement of directional radiation characteristics of acoustic sources
• Vibration measurement
• Measurement of sound absorption coefficients of acoustic materials
• Room acoustics parameter measurement (reverberation time, STI-PA)
• Design of acoustic modifications and room acoustic treatments
• Multichannel audio recording of public cultural events

Equipment

• Anechoic chamber: volume 128.3 m³, clear dimensions 5.0 × 4.1 × 6.4 m, temperature control (20–30 °C), lower cutoff frequency 100 Hz, fully compliant with ISO 3745
• Reverberation chamber: volume 214.9 m³, dimensions 6.8 × 5.3 × 6.1 m, fully compliant with ISO 354
• Brüel & Kjær analyzer (up to 9 channels): equipped with FFT & CPB Analysis, Noise Source Identification, Sound Quality, Data Recorder, and Order Analysis software
• Brüel & Kjær measurement microphones & sensors: B&K 4190 free-field microphones, B&K 4943 diffuse-field microphones, B&K 4955 low-noise microphones, single-axis and triaxial charge/voltage accelerometers, and B&K 3599 sound intensity probes
• Handheld sound level meters & acoustic hardware: Brüel & Kjær 2260 and NTI XL2 sound level meters, remotely controlled turntable for measuring directional characteristics of acoustic sources, power amplifiers, Sabine multichannel signal processors, Rane equalizers, RME AD/DA converters, and acoustic sources (point sources, omnidirectional sources, loudspeaker systems)
• Mobile recording systems: Alesis HD24 24-channel HDR mobile recording system, two-channel handheld recorders (Sony, Marantz, Tascam)

Most of the equipment is portable, allowing measurements to be conducted outside the laboratory.

Services

• Optical power and wavelength measurement of infrared optical sources (including fiber-coupled LEDs and lasers) — wavelength range 800–1700 nm, max. power 500 mW
• Material and substance characterization via UV-Vis spectrophotometry
• Absorption spectra measurement of target compounds in solutions across various solvents
• Concentration measurement of dyes and organic substances
• Spectral measurement of various light source types
• Measurement of time-dependent reactions and processes (kinetic measurements)
• Measurement at selected wavelenghts

Equipment

• Thorlabs PM100D optical power meter with S144C power sensor head
• Ocean Optics QE65Pro spectrophotometer: single-beam spectrophotometer, wavelength range 200–1100 nm, radiation sources: tungsten (visible spectrum) and deuterium (ultraviolet spectrum) lamps