Maksym Karpash

@ukd.edu.ua

King Danylo University



           

https://researchid.co/mkarpash

RESEARCH, TEACHING, or OTHER INTERESTS

Renewable Energy, Sustainability and the Environment, Mechanics of Materials, Safety, Risk, Reliability and Quality

21

Scopus Publications

Scopus Publications

  • Analysis of solar photovoltaic module parks in Ukraine: forecasting their further operation and end-of-life management
    Maksym Karpash, Andriy Yavorskiy, Liubomyr Zhovtulia, and Valentyn Vasechko
    EDP Sciences
    This article examines solar energy’s rapid growth and evolving role in Ukraine, focusing on the challenges and opportunities presented by the end-of-life management of photovoltaic (PV) modules. Despite only actively developing over the past decade, solar energy accounts for over 5% of Ukraine’s total electricity generation, ranking it 8th in Europe for installed PV capacity. The war in Ukraine has further underscored the importance of solar energy for the country’s energy security and resilience. However, with the majority of PV capacity installed only recently and with a finite lifespan, Ukraine will soon face significant volumes of decommissioned PV modules requiring processing, utilization, or reuse. The article highlights the urgency of developing a robust PV module recycling sector, as current practices involve landfilling most components. A comprehensive analysis of Ukraine’s PV module park, conducted as part of the EU-funded Retrieve project, represents a crucial first step towards effective PV waste management, aligning with Ukraine’s energy strategy and commitments under the Paris Agreement on climate change.

  • Optimization of Business Processes in Private Higher Education Institutions Management System During War Period in Ukraine
    Sergiy Vashchyshak, Maksym Karpash, Taras Styslo, Oksana Styslo, and Vasyl Kitura
    Springer Nature Switzerland

  • Universities as regional leaders for sustainable energy and climate EU-harmonized policies
    Maksym Karpash, Liubomyr Zhovtulia, Andriy Yavorskiy, Ihor Rybitskiy, Vitalii Tsykh, and Oleg Karpash
    Scientific Route OÜ


  • Experimental approbation of the algorithm for obtaining 3D model of hardfacing material phase particle
    Olexandr Ivanov, Maksym Karpash, Dmytro Petryna, Sergiy Marynenko, Ihor Koval, and Oleg Huryk
    Elsevier BV

  • Experimental investigation of FCAW hardfacing wear resistance based on Fe-Ti-Mo-B-C
    Olexandr Ivanov, Dmytro Petryna, Maksym Karpash, Halyna Kramar, Sergiy Marynenko, and Ihor Koval
    Elsevier BV


  • stAteMent of optIMIZAtIon tAsKs for the process of DevelopInG norMAtIve DocuMents for GAs InfrAstructure
    G.M Kogut, A.P Oliinyk, M.O Karpash, and A.M Klyun
    Dnipro University of Technology
    purpose. To establish and formulate optimization tasks in elaborating strategies for developing normative documents that identify the work performance at gas infrastructure facilities and the effectiveness of these measures in the pre­emergency and emergency situations. Methodology. To develop the necessary regulatory support for the operation of natural gas transportation and distribution operators, the study presents a mathematical formalization of the optimization problems selection and probability estimate for the identification of strategies for developing new documents that will allow standardizing the basic parameters of trouble­free opera­ tion. findings. The factors that affect the safe operation of the gas transmission and gas distribution network, and cause emergen­ cies, were identified and argued in the article. An experiential mathematical formalization for the process of developing normative documents was carried out; theoretically­justified optimization procedure based on a probabilistic optimization criterion and un­ der conditions of incomplete definiteness was performed. originality. The research originality is in the new approach to scientific justification for the elaboration of strategies for norma­ tive document development in the gas industry. practical value. The results of the study allow establishing a scientifically based basis for the further development of the stan­ dardization system for gas infrastructure facilities in the context of EU policy priorities regarding safe, sustainable and affordable energy. The mathematical apparatus can be used by specialists of natural gas transportation and distribution companies to elabo­ rate strategies and road maps for the development of gas transmission and gas distribution systems, respectively.

  • Impact assessment of non-technological fluid accumulations in the cavity of an existing gas pipeline on the energy efficiency of its operation
    I.V. Rybitskyi, A.P. Oliynyk, A.V. Yavorskyi, M.O. Karpash, V.S. Tsykh, and M.B. Slobodyan
    Vasyl Stefanyk Precarpathian National University
    The given methodology for assessing the efficiency coefficient of a gas pipeline based on the determination of a new informative parameter - the maximum level of non-technological fluid accumulations in its cavity. The proposed methodological approaches make it possible to respond faster regarding the removal of critical volumes of accumulated fluid from the gas pipeline cavity in order to maintain its energy and operational efficiency at the proper level.

  • Implications of new standards on technical diagnostics and control implementation for the gas transmission system efficiency
    M.O. Karpash, , A.P. Oliynyk, G.M. Kogut, A.M. Klyun, , , and
    National Academy of Sciences of Ukraine (Co. LTD Ukrinformnauka)

  • Specialized computer system controlling the technological parameters of the drilling rig
    Nadiia Shyrmovska, Artur Voronych, Yaroslav Zaiachuk, Maksym Karpash, and Olha Lazoriv
    IEEE
    Systematized and researched characteristics of quasi-stationary oil and gas objects complex on the example of industrial drilling plants. As a result, requirements for the implementation of algorithms and special processors for performing diagnostic functions of quasi-stationary objects are formed. The algorithm of identification of states of quasi-stationary objects on the basis of special codes is developed. The technique is proposed besides the compact coding of a set of technological parameters of drilling states in the form of structured codes that carry information about the number, time and planned economic data on the example of drilling processes.

  • Safe operation of engineering structures in the oil and gas industry
    A.V. Yavorskyi, M.O. Karpash, L.Y. Zhovtulia, L.Ya. Poberezhny, and P.O. Maruschak
    Elsevier BV

  • Procedure of choosing of phased-array transducers for the determination of the sizes and shapes of defects
    O. V. Popovych, O. M. Karpash, and M. O. Karpash
    Springer Science and Business Media LLC

  • Risk management of a safe operation of engineering structures in the oil and gas sector


  • Formation of structure and properties of composite coatings TiB2-TiC-Steel obtained by overlapping of electric-arc surfacing and self-propagating higherature synthesis
    D. L. Lutsak, , P. M. Prysyazhnyuk, M. O. Karpash, V. M. Pylypiv, V. O. Kotsyubynsky, , , , and
    National Academy of Sciences of Ukraine (Co. LTD Ukrinformnauka)

  • Character of the relationship between the microstructure and physicomechanical properties of steels of long-term operation
    V. D. Myndyuk, O. M. Karpash, and M. O. Karpash
    Springer Science and Business Media LLC

  • Development of new instant technology of natural gas quality determination
    Taras Koturbash, Maksym Karpash, Iryna Darvai, Ihor Rybitskyi, and Vladimir Kutcherov
    American Society of Mechanical Engineers
    World experience shows that important factor in the calculations for natural gas consumption between suppliers and consumers is not only the volume of natural gas, but the quality indicators. With gas market liberalization, gas properties are expected to vary more frequently and strongly (composition, heating value etc.). Quality of natural gas is currently a topical issue, considering the steady increase of gas consumption in the world in recent decades. Existent chromatographs and calorimeters are very accurate in gas quality determination, but general expenditure and maintenance costs are still considerable. Market demands alternative lower cost methods of natural gas quality determination for transparent energy billing and technological process control. Investigation results indicate that heating value (HV) is a nonlinear function of such parameters as sound velocity in gas, N2 and CO2 concentration. Those parameters show strong correlation with natural gas properties of interest (HV, density, Wobbe index), during analysis conducted on natural gas sample database. For solving nonlinear multivariable approximation task of HV determination, artificial neural networks were used. Proposed approach allowed excluding N2 concentration from input parameters with maintenance of sufficient accuracy of HV determination equal to 3.7% (with consideration of N2 concentration – 2.4%) on sample database. For validating of received results corresponding experimental investigation was conducted with reference analysis of physical and chemical parameters of natural gas samples by gas chromatography and followed superior HV calculation according to ISO 6976:1995. Developed experimental setup consist of measuring chamber with ultrasonic transducer, reflector, pressure, temperature and humidity sensors, ultrasonic inspection equipment for sound velocity measurements and CO2 concentration sensor with relevant instrument. The experimental setup allows measurement of sound velocity at 1MHz frequency and CO2 concentration in natural gas sample along with parameters control (temperature, humidity, pressure). The HV calculation algorithm was based on specially designed and trained artificial neural networks. Experimental investigation of proposed approach was conducted on 40 real samples of locally distributed natural gas. Obtained results, in comparison to reference values, showed absolute error in Lower HV (net calorific value) determination equal 166 kJ/m3, while relative error was equal 4.66%. Developed technology allows construction of autonomous instrument for instant natural gas quality determination, which can be combined with volume meters in order to provide transparent energy flow measurement and billing for gas consumers. Additionally it can be used for gas sensitive technological process control.


  • Complex method for checking physicomechanical characteristics of materials of metalworks
    O. M. Karpash, E. R. Dotsenko, and M. O. Karpash
    Springer Science and Business Media LLC

  • New approach to natural gas quality determination
    O. Karpash, I. Darvay, and M. Karpash
    Elsevier BV

  • Resistivity as an informative parameter for evaluation of actual physical and mechanical properties of structural steels