Engineering services

Optical Measurement of Deformation and Vibration

  • Non-contact optical measurement techniques are an important tool in applications where it is necessary to measure very hot or inaccessible surfaces or thin components, whose connection to measuring sensors would lead to influencing of components measurement.
  • Optical measurements can be performed both on planar surfaces as well as on complex 3D components, where the reconstruction of the three-dimensional information is based on composition of image from multiple cameras.
  • Data are collected throughout the scanned field. In addition to the common values at various points within the area we thus gain full field information about the character of the monitored parameter, such as gradients, concentration etc.
  • We use high-speed cameras in combination with computer image processing, which provide a unique opportunity to penetrate the details of transient events and reveal the possible causes of unsatisfactory performance of the product.
  • Vibrographic technique allows us to examine very fast and periodically repeated processes, determine their frequency, display component shapes and isolate problematic sets of components in the given operating frequency.
  • Using additional applications and magneto-dynamic or piezoelectric shakers we are not only able to determine the response of the component to the specified frequency, but also to determine the shapes at different phases. Besides optical measurement we provide strain gauge measurements and measurement of residual stress.


ACPD/DCPD Crack Growth Determination

  • The LIMIT measuring unit was developed by Sobriety for potential drop technique measurements using ACPD, DCPD or corrected DCPD technique.
  • LIMIT is suitable for laboratory applications of crack growth measurement on all standard specimen: CT, CCT, SEN accordingly to ISO 12108 and ASTM E647.
  • LIMIT Control software has all mentioned specimen predefined with the possibility to set up a new measuring procedure for non-standard specimen.
  • Determination of resistance to stable crack extension according to ISO 22889.
  • The LIMIT measuring unit has four channels which can be used for simultaneous measurement of two different specimen. Each specimen has two channels assigned – one is used for measurement and the second one for temperature compensation. Because of this configuration LIMIT excels at stability and measurement accuracy during changes in temperature of the specimen.
  • 18-bit converter ensures excellent resolution and 0.1 ‰ accuracy of measurement.
  • LIMIT allows for the evaluation of measured data in the LIMIT Control software, but also for sending data to the test machine via Bluetooth.

ACPD/DCPD Technical Diagnostics

  • The LIMIT measuring unit was developed by Sobriety for potential drop technique measurements using ACPD, DCPD or corrected DCPD technique.
  • In industrial practice LIMIT is used mostly for determination of fatigue crack growth and resistance to stable crack extension, thickness measurements (corrosive wear), detection and measurement of cracks in critical areas (welds, notches etc.), measurement of deformations, relaxations and external loads.
  • Measurements can be conducted in extreme conditions, high temperature, pressure, in ovens and autoclaves, in radioactive, chemically aggressive, wet environments with strong electromagnetic field.
  • The LIMIT measuring unit has four channels which can be used for simultaneous measurement of two different specimen. Each specimen has two channels assigned – one is used for measurement and the second one for temperature compensation. Because of this configuration LIMIT excels at stability and measurement accuracy during changes in temperature of the specimen.
  • 18-bit converter ensures excellent resolution and 0.1 ‰ accuracy of measurement.
  • LIMIT allows for the evaluation of measured data in the LIMIT Control software, but also for sending data to the test machine via Bluetooth.
  • The ATEX certified LIMIT is intended for use in potentially explosive atmosphere.
  • Determination of electrodes placement is performed by FEM analysis, calibration, or simulation.

Microelectronics and Power Electronics for Space Application

  • Our electronics engineers are dealing with specialized product development, such as AC/DC Converters, Motor Inverters, Special Measurement Devices, Multichannel Data Loggers, Industrial Buses.
  • Control system of electronic pumps allows precise engine power control, a key feature of RLV (Reusable Launch Vehicle).

Regulating Valves

  • Valves developed for liquid-propellant rocket engines are subject to demanding standards concerning perfect technological qualities and engineering reliability.
  • Our regulating valves are developed for throttleable 100 KN LOX-methane expander engine. regulating valves with electromotor actuators provide strict control over propellant feed. This enables state-of-the-art engine throttling.
  • We develop electromotive driven valves together with the necessary electronics controller.

Electric Pumps for Rocket Propellants

  • The complicated architecture of liquid propellant rocket engines can be greatly simplified by using high-speed permanent magnet synchronous motors to drive the pump instead of a turbine.
  • The success of our electric pumps is based on 30 years of experience in developing rotary machines.
  • The new design consists of high-speed synchronous motor, fluid dynamic bearing and innovative seal.

Rotor Dynamics

  • Open source software DynRot BR was developed for plain bearings design and rotor dynamics evaluation.
  • The software calculates the rotor's dynamic parameters depending on the rotor geometry and material properties, taking into account the influence of the stiffness and attenuation characteristics of the bearings and the user can make changes to the rotor design quickly and efficiently.
  • We test aerodynamic, hydrodynamic and aerostatic of bearings, design synchronous and asynchronous motors and generators.
  • We provide torque and power measurements and examine the possibilities of application SiC technology to power electronics.

Turbine and Compressor Simulations

  • Numerical simulations of turbine and compressor flows allows us to precisely handle design processes with proper estimation of numerical performance.
  • The benefits of our solution include identification of turbine or compressor design aerodynamic parameters, design modifications, numerical reconstruction of turbine or compressor map.




CFD

  • CFD is a computational technology that allows us to see the fluid dynamics.
  • Using CFD analysis, we can create a virtual prototype of a system or a process, which can be viewed in chronological sequence and then analyse the behaviour response to different stimuli.
  • CFD program offers the user unlimited number of outputs in the form of data or graphic representation, from which the behaviour of the modelled system can be easily determined.
  • In the area of internal aerodynamics we concentrate on the flow of gases and liquids in confined spaces.
  • We also provide optimization of flow in the space within motor vehicles with the aim of more efficient cooling and we suggest shapes of exhaust grilles in ventilation circuits of cars.
  • In the field of external aerodynamics mainly concentrate on computations of drag and lift forces acting on a body in the airflow, which supplement, or often even completely replace the experiments in aerodynamic tunnels.
  • The most frequently solved areas in aeroacoustics are noise generation and propagation due to the external flow.
  • By controlling the geometry of liquid channels with the aim to ensure adequate cooling, we can identify areas at risk of local liquid boiling.

FEM Analysis

  • The finite element method is a numerical method used to simulate the behaviour of stress, strain, frequencies, heat flow, and electromagnetism by creating a mathematical model.
  • FEM is used primarily for the control of already designed equipment or to determine critical (most loaded) point in a construction.
  • For validation we use experiments and contact and optical measurements, which we conduct even at high temperatures up to 1400 °C.


Risk Analysis

  • Integral part of our activities is the development of risk analysis and FMEA documents as required.
  • The risk usually doesn't exist in isolation, but it is a combination of risks that may eventually present a threat to the subject.
  • It is necessary to evaluate risks in terms of their possible impact and likelihood of occurrence (including combinations thereof) and focus on key risk areas and suggest countermeasures.
  • The focus of the FMEA method lays already in the process of developing a new product, when we define all possible defects (including the manufacturing process), these defects will be assessed in terms of possible impact and likelihood of occurrence and according to the Pareto principle we focus on the most significant ones and propose countermeasures in advance.

CAD & ANSA design

  • We provide all activities related to prototype design, prototype drawing and production documentation for both low volume and mass volume production.
  • Separation of the necessary data and model preparation is done in software ANSA (BETA CAE Systems S.A.).
  • With regard to the computation type we create CFD and FEM meshes of specific size, structure and elements quality.
  • Our capacity allows us to create meshes up to the size of 80 million volume cells. We can create meshes for both stationary calculations, as well as for non-stationary calculations and moving meshes.

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