Speaker: Mr. Daniel Omacht
UTMdev, Ostrava-Vitkovice, Czech Republic
Abstract:
The instrumented indentation test method is intended to determine the mechanical and fracture toughness material properties. It is a purely non-destructive test method, the accuracy of which is given mostly by the accuracy of sensing force and depth of impression. Essential for this method is the accurate way of sensing the depth of the impression and the indentation load – theimplementation of which is conditioned by deeper knowledge in the field of elasticity and strength of the material.
In 2021, after several years of research, the designers of UTMdev s.r.o. completed the development of a portable instrumented indentation system (PIIS3000TM). Its patentedmechatronic design guarantees high accuracy and repeatability of testing results. The system is primarily dedicated to the determination of mechanical and fracture toughness material properties of machinery parts working under operating conditions.
PIIS 3000TM uses an evaluation algorithm to estimate the mechanical properties. In its development, the authors reviewed several existing analytical methods, such as the representative stress-strain method, dimensional analysis method, and inverse finite element method. An advanced architecture is designed to improve the accuracy and stability in the prediction of mechanical properties and fracture toughness using the spherical indentation test. Several hundred experiments have been carried out by UTMdev s.r.o. (www.utmdev.eu) for more than 40 materials. Verifications are performed for elastic-plastic properties, such as yield strength, tensile strength, Young’s modulus, Brinellhardness, maximum plastic strain, elongation and fracture toughness. A good agreement was found between the conventional test results and the predictionof evaluation software from IIT tests. The comparison scattering is commonly between 5-10% for strengths and 15-20% for fracture toughness.
Bio-data of the speaker:
Daniel Omacht is a seasoned engineer specializing in research, innovation,and development of unconventional testing machines, equipment, technologies, and devices. He graduated from the Brno University of Technology in 1995 with a degree in Engineering and subsequently obtained certification as an International/European Welding Engineer IWE/EWE. His entire professional career has been dedicated to research and development.
Throughout his career, Daniel has held various positions, including mechanical designer, programmer, research scientist, and ultimately, head of the research, development, and production department for testing machines and equipment. In 2020, he founded UTMdevLtd., a company specializing in research, development, and production of unconventional testing machines, equipment, and devices for testing miniaturized samples using methods such as Small Punch Test (SPT), Instrumented Indentation Testing (IIT), non-destructive material sampling, creep testing of miniaturized samples using Small Punch Creep Test (SPCT) and Impression Creep Test (ICT).
Daniel Omacht has contributed to numerous significant national and international projects, including RMTVC, RMTVC – PU, and TK01020160, focusing on comprehensive approaches to material engineering to ensure the safe operation of innovated blocks in both conventional and nuclear power plants. He has also achieved several notable results, patents, utility models, and collaborated on the European testing standard EN 10371 for Small Punch Test – Metallic Materials.
The machines and equipment he developed (SCOOPERTM, SPC1000DLSTM, TTS190TM, GE76TM, PT8TM, PIIS3000TM) are currently in use in many globally recognized research centres and universities, including EPRI (USA), Blue Origin (USA), VNIT (India), VÚJE (Slovakia), INAIL (Italy), VTT (Finland), ÚJV Řež(Czech Republic), Politechnika Warzszawska (Poland), AGH Krakow (Poland), HZDR (Germany), and others.
Daniel Omacht is a passionate engineer with a broad spectrum of knowledge and experience that makes him a valuable team member in his field. He is capable of efficiently managing projects from conception to completion and is motivated by a constant pursuit of new innovative solutions.
Organized by:
InSIS and Center for Structural Integrity of Safety Critical Systems, IIT Madras
