Research projects
Project Title:
“Application of ordinary and higher order central moments in a spectral fatigue life determination algorithm”
Lead time: 27.07.2017-26.01.2021
Brief description of the project:
The grant involves simulation and experimental research. The goal of the research is to generalize the fatigue life determination algorithm using the spectral method to a load range with an arbitrary probability distribution.
Significance of the results of the research implemented in the project:
- The results of the simulation studies will be used to determine detailed parameter and
load for research on an experimental stand, - The fatigue test results will be used to plot fatigue graph in the standard deviation – number of cycles to failure
- Development of a reliable method of taking into account the deviation from Gaussian distribution of the load path in the spectral method leads to a generalization of this method, which will result the possibility of using it for a wide range of loads
The projects task are:
- development of transition functions from the normal distribution to a distribution with different, given kurtosis and skewness parameters
- inclusion of kurtosis, skewness, normal and central moments in the computational algorithm,
- determination of the change in fatigue life for non-Gaussian load distributions,
- development of the model taking into account the influence of the deviation from normal distribution of the load course on the fatigue life,
- experimental studies for steel and aluminum alloy for loads with normal distribution,
- experimental tests for steel and aluminum alloy for loads with non-Gaussian distribution,
- development of experimental results, verification of the proposed algorithm.
Project title:
“Innovative adaptation of the criteria of multi-axis material fatigue in the fatigue life calculation process”
Lead time: 13.02.2018-12.08.2021
Brief description of the project:
The main goal of the planned research is to build and verify an innovative algorithm for calculating fatigue life for random loads. The originality of the algorithm is based on the correction of the function reducing the multi-axis stress / strain state to the uniaxial state. The second goal of the research is to develop and verify an original fatigue life calculation algorithm that adapts the criteria of multi-axis fatigue based on strain components and strain energy density
Significance of the results of the research implemented in the project:
- the proposed algorithm, by correctly estimating the fatigue life of structural components, will contribute to a more complete use of materials, thus reducing environmental pollution and other operating costs, among others
The projects task are:
- Experimental determination of fatigue characteristics for five structural materials (C45, S355J2G, AISI 304, AISI 316 Ti, 7075-T651) for cyclic bending and torsion. Identification of fatigue crack initiation orientations for different loading levels. Identification of cyclic strengthening or weakening of the tested materials,
- experimental fatigue tests on three selected materials for two proportional combinations of cyclic bending and torsion,
- verification of the proposed algorithm for fatigue life calculation using the conducted experimental tests,
- adaptation of the proposed fatigue life calculation algorithm to multi-axis criteria based on deformation and deformation energy density,
- experimental fatigue tests of selected materials with variable-amplitude uniaxial bending and torsion,
- Experimental fatigue tests of selected materials under proportional combinations of bending and torsion with varying amplitudes,
- analysis and verification of the proposed algorithm for fatigue life calculation with multi-axis variable amplitude loads, taking into account the variability of material coefficients.
Project title:
“Resistance of Ti6Al4V material to disproportionate cyclic loading with respect to material growth direction in SLM technology”
Lead time: 01.10.2020-30.09.2021
Brief description of the project:
The aim of the project is to conduct preliminary fatigue tests on samples made with the incremental method using selective laser melting (SLM) of metallic powders – Ti6Al4V titanium. The experimental tests will be focused on determining the influence of the direction of material growth in test elements made with the SLM method on the durability of these elements subjected to disproportionate loads.
- A series of experimental tests for three mutually perpendicular directions of material growth will provide a very good base of experimental results taking into account the influence of the direction of growth on the fatigue properties, which will be necessary for the subsequent stages of work on degradation phenomena occurring in elements produced by incremental methods from metallic powders.
- The planned number of test elements will make it possible to adequately reproduce the fatigue characteristics of the Ti6Al4V material used in the SLM method in the planned research program.
The projects task are:
- identification of degradation mechanisms occurring in elements under the influence of loads disproportionate to the direction of material growth during sample production,
- determination of the anisotropy of fatigue properties depending on the direction of material growth in the manufacturing process,
- fractographic analysis to determine how the fatigue damage propagated, and what the dominant damage mechanism was,
- fatigue damage analysis based on light microscopy using, among others, the Huvitz HRM 300 microscope,
- recognizing and understanding the degradation phenomena occurring during the exposure of elements produced by the SLM method to multi-axis variable loads in relation to the direction of material growth,
- determination of influence on fatigue properties of the tested material,
- to relate the obtained experimental results to own research conducted for the same alloy obtained by traditional manufacturing technique – casting process.
Project title:
“Modeling of dynamic and strength issues in the process of precise milling with the use of precise spherical mills”
Lead time: 20.02.2018-19.08.2021
Brief description of the project:
The main objective of this project is to develop comprehensive models for the components of total force, instantaneous displacement, stability, and strength of spherical micromilling in the milling process. The application of these models will enable the selection of machining parameters to improve blade life and surface quality, as well as predict the blunting of the microfresnel.
Significance of the results of the research implemented in the project:
- the analytical equations for the geometric parameters of the machined layer will be developed, taking into account the cutting parameters, blade geometry and tool radial runout,
- in order to determine the proportionality coefficients, experimental tests will be carried out on the machining center, including the measurement of the components of the total force, blade wear and the minimum thickness of the cut layer,
- the developed force model will be implemented in a numerical package,
The projects task are:
- construction, configuration and testing of a force measurement path for the micromilling process,
- determination of the minimum thickness of the machined layer using the analytical and experimental method,
- evaluation of dynamic stability of micromilling within the scope of variable machining parameters,
- determination of proportional coefficients of the total force components model,
- development of a total force components model for precision milling of hardened steel with ball milling cutters,
- experimental verification of the force model on the machining center in the range of variable milling parameters,
- development of FEM model of instantaneous displacement and strength of micromilling,
- experimental verification of the FEM model on the machining center within a range of variable milling parameters. Tests will include measurements of instantaneous displacement of the micromesh, vibration acceleration of the workpiece, geometric structure of the machined surface, and condition of the cutting edge,
- evaluation of conformity of developed models with results of experimental tests,
- generalization of research results in terms of cognitive effects.
As part of the project entitled „Broadening graduate’s competences in the areas of sustainable electric power and environment“ of the Interreg VA Program Czech Republic – Poland 2014-2020. Priority axis 3 “Investing in education, training, including vocational training, for acquiring skills, lifelong learning through development and implementation of common systems of education, vocational training and training “
Project number: CZ.11.3.119 / 0.0 / 0.0 / 17_027 / 0001671
“Broadening graduate’s competences in the areas of sustainable electric power and environment”
Project implemented within the framework of the Interreg V-A Czech Republic – Poland programme
Lead partner: Vysoká škola báňská – Technická univerzita Ostrava
Lead time: 01.03.2019 r. – 28.02.2022 r
Brief description of the project:
The project implemented at the Opole University of Technology in partnership with Vysoká Škola Báňská – Technická Univerzita Ostrava, aims to increase the employability of graduates of both universities and improve their attractiveness on the labour market. Thanks to the project students gain new knowledge and skills in the field of electrical engineering and environment. Participants of the project have the opportunity to take part in foreign study visits, specialized professional seminars and workshops, as well as internships in Polish and Czech companies.Project realization allowed also to enrich educational offer of both project partners by improving laboratory base (purchase of modern equipment) and modification of didactic classes based on experience of both sides experience of both parties.
The target group of the project are students of all studies at VSB-TUO and PO, including PhD students.
The projects task are:
- short-term and long-term study stays,
- professional educational activities (seminars and workshops in Poland and the Czech Republic),
- professional internships in companies,
- updating of educational activities,
- supplementation of laboratory equipment
- purchase of laboratory equipment
Project title:
“Intensification of scientific and research activity of the Opole University of Technology in the field of mechanical engineering” under the Minister’s program “Regional Excellence Initiative”
Lead time: 01.01.2019-31.12.2022
Brief description of the project:
The project is carried out at Opole University of Technology and aims at increasing the quantity and quality of scientific research and development works conducted at the University. It is addressed to employees practicing real and effective scientific discipline of mechanical engineering. The project will include tasks and activities allowing to increase the quality of
– implementation of innovative scientific research,
– human resources management,
– cooperation with educational, scientific and business environment,
– effective use of the material base for research and development works,
– teaching offer adapted to the social demand and expectations of the industrial environment.
The projects task are:
- increasing the publishing, scientific and research and development activity of employees research and teaching activities under the RID project,
- creation of research jobs for “team leaders”,
- internationalization of a group of research and teaching staff, and PhD students,
- creating a modern laboratory for scientific calculations,
- equipping laboratories with modern devices and equipment,
- support for scientific research on modern didactic methods.
