Miloslav Kepka, an accomplished engineer and scholar, obtained his Bachelor's and MAster degree in Nuclear and Physical Engineering from the prestigious Czech Technical University in Prague. His passion for research and pursuit of knowledge led him to further his education, and he subsequently earned his doctorate from the esteemed University of West Bohemia in Pilsen. Miloslav Kepka Currently serving as the head of the testing laboratory for operational strength and fatigue life, he plays a pivotal role in ensuring the safety and reliability of various structures and components. One of Miloslav Kepka's areas of expertise lies in evaluating the durability of welded constructions. Through meticulous analysis and rigorous testing, he assesses the integrity and strength of welded joints, taking into account factors such as material properties, welding techniques, and environmental conditions. His work aids in identifying potential weaknesses or flaws in welded structures, allowing for timely repairs and improvements to prevent catastrophic failures. In addition to his proficiency in welded constructions, Miloslav Kepka has also developed specialized knowledge in constructions prepared by 3D metal printing. This emerging technology has revolutionized the manufacturing industry, enabling the creation of intricate and complex designs with enhanced precision and efficiency. However, ensuring the durability and reliability of 3D-printed structures requires thorough examination and evaluation. Miloslav Kepka's expertise in this field allows him to meticulously examine the printed components, assess their mechanical properties, and identify any potential weaknesses or areas of improvement. Miloslav Kepka's dedication to his work extends beyond the confines of his laboratory. He actively collaborates with industry professionals and researchers to exchange knowledge and contribute to the advancement of engineering practices. His expertise and insights are highly sought after, and he frequently presents his findings at conferences and seminars, inspiring others and fostering innovation in the field.
The Regional Technological Institute, a research center of the University of West Bohemia, is currently working on two larger projects, the subject of which is the investigation of the potential of the high-frequency mechanical impact method (HFMI) for welds from steel sheets of various thicknesses and in a wide range of strength of welded steels.
The potential of the application of this method in designing the structures of rolling stock and steel bridges is investigated.
Partial results have already been presented at the 23rd European Conference on Fracture - ECF23, Procedia Structural Integrity 42 (2022) 762–768. The new results are based on a larger number of test samples and include results using the HFMI method for thin (4 mm) and very thick (90 mm) sheet welds. For these extreme values, results are not available in open sources. The results are compared with the recommendations of the International Institute of Welding.
The fatigue tests are complemented by measuring residual stresses by X-ray diffraction in several test specimens with the application of the HFMI before and after completing 10 million cycles at load values around the so-called fatigue limit.
|Room 8||Thursday 30th November||14:30-15:00||Miloslav Kepka jr.|
S09-5 Fatigue of assemblies
13 - Experience with the use of the HFMI method for weldments from sheets of different thicknesses