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ENGINEERING MEASUREMENTS

Engineering measurement is used to verify the calculations and engineering models, as well as to determine the real loads and stress states, excitations and responses, constitutive parameters, etc. This procedure creates the input data for the calculations and engineering model of a new product or the model that describes the problem with an existing object.

Engineering measurements are carried out during product development by measurements carried out on a prototype or its component, i.e. by measurements on an existing product if problems occur while it is in service.

Laboratory experiments are carried out first. In this step, measurements are carried out in a controlled environment. In this way, the acquired data are compared with the calculation results for the identical conditions performed in calculation and experiments. Boundary conditions and constitutive parameters of the model could be corrected or optimized so that the model might provide valid results, according to the measurement results. Laboratory experiments are carried out to verify the model for stength analysis - FEM (Finite element method), and the model for mechanical system dynamic behavior analysis - MBS (Multi-body simulation).

The following step includes experiments in real conditions. In these experiments, the real loads and real stress states, data relevant for fatigue strength analysis are acquired. Real excitation and response data, relevant for dynamic behavior of mechanical systems, is also acquired. The engineering model for strength analysis could be loaded with real loads that occur in reality, and fatigue analysis can be performed for that loads. If necessary, an engineering model could be corrected and optimized.

An engineering model for analysis of mechanical system dynamics can be excited with real excitations. The solution can be compared with real responses acquired by measurements. Thus, the dynamic behavior of mechanical system is evaluated, and if necessary the model or object can be corrected i.e. optimized to achieve the desired dynamic behavior.

Engineering measurements is carried out iteratively until a desired objective is achieved, and if a correction is performed, the same experiments are carried out until the measurement results are not at the desired level, and while the results provided by the calculations are the same as measurement results.

Engineering measurements is carried out according to the method developed in our company or according to prevailing standards.

Engineering measurement is used for:

  • Verification of engineering models
  • Determining the real loads in service
  • Determining the real stress states that occurs in service
  • Determining the real mechanical system dynamics, that is, real excitations and responses
  • Determining the performance and features of the system or system components
  • Discovering the causes of problems in existing systems

After the measurements, processed acquired data is used as input data for calculations and as comparative data for verification, analysis, and synthesis of mechanical systems.

VERIFICATION TESTS

Verification tests, in accordance with the standards, are carried out to verify the engineering model according to the test object is planned and designed or to verify the test object itself. Verification tests confirm that the calculation gives valid results or the product comply with requirements defined in standard.

It is meaningful to carry out verification tests after the completion of engineering measurements and product optimization.

By verification tests, measurementis carried out with the aim to verify:

  • Strength of the structure
  • Dynamic behavior of the system

MONITORING

Monitoring, or in other words, continuous supervision of certain physical quantities, is performed on advanced mechanical systems with the aim to determine real state or condition in service for a longer period of time. The objective of monitoring is to acquire information on real loads and stress states, to detect malfunctions, to supervise the critical aspects covered by risk management; in order to be able to carry out maintenance activity in time, as well as optimization or recovery.

TECHNICAL CONSULTING AND ENGINEERING SERVICES

These services include consulting and engineering, as well as risk management mainly in the field of dynamically loaded structures (fatigue strength) and mechanical system dynamics in new product development, or in solving problems with existing mechanical systems.

  • Conceptualization
  • Engineering modeling and simulations
  • Load assumption
  • Dynamics
  • Design and construction
  • Strength analysis
  • Measurements and tests
  • Optimization

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