Lokalita: Brno

Ph.D. thesis: Study of the influence of transients phenomena in piezoceramics in terms of fracture-mechanical response

The aim of this work is to determine and explain the change in mechanical behaviour due to transients with emphasis on the fracture mechanical response in selected lead-free piezioceramics. The main goal of the doctoral thesis will be to study the mechanical and fracture behaviour of piezoceramics (for example BTO, BTZC, etc.) during its transition…

Ph.D. thesis: Microscopic processes at the fatigue crack tip

Fatigue crack growth is a process that is described macroscopically by quantities such as the stress intensity factor, J-integral or plastic part of the J-integral. There are many models of crack propagation at the microscopic level that consider plastic deformation around the crack tip, but which differ in details. Advances in experimental methods allow more…

Ph.D. thesis: Development of hybrid composites compensating shrinkage at pyrolysis

This work aims to design and describe suitable methods of shrinkage compensation and/or control for the preparation of matrix composites and their effect on microstructural changes and fracture behaviour of hybrid composite materials containing such adapted matrix and ceramic fibres. The main goal of the doctoral thesis will be the design and characterization of hybrid…

Bulding ECG Databases

The task is to create a general ECG database – explore and choose the proper database platform (SQL/NoSQL), create the design as the diagram scheme, and finally implement the database on a server and fill it up with data.  Skupina Umělá inteligence a medicínské technologie, oddělení Medicínské signály/Group of Artificial Intelligence and Medical Technologies https://www.isibrno.cz/cs

Application of Cohesive Elements in Modeling Fracture of Heterogeneous Materials

The fracture process of concrete is a complex mechanism influenced by its highly heterogeneous internal structure: matrix/cement paste, aggregate, and pores. Damage development occurs at the interface between the cement paste and aggregate, where microcracks can form. The offered internship will focus on 2D/3D numerical modeling of this process using cohesive elements available in ANSYS…

Determining the endurance life of selected construction materials

Current methods for determining the fatigue life of concrete structures focus on reducing stresses in structural elements. However, this approach only considers the degradation of mechanical properties due to cyclic loading and not the gradual development of microcracks. This topic is primarily concerned with the experimental determination of the fatigue life of construction materials, particularly…

Computer Simulations of Superparamagnetic Nanoparticles

Superparamagnetic nanoparticles are used as an active medium in cancer treatment through magnetic hyperthermia (https://vesmir.cz/cz/casopis/archiv-casopisu/2024/cislo-5/nanosvet-nemz-je-sekunda-temer-vecnosti.html). Optimizing their properties requires a detailed understanding of the magnetization reversal mechanism in high-frequency magnetic fields, taking surface effects into account. The student will first familiarize themselves with micromagnetic theory and its application to the study of magnetic materials. The…

Materials for Efficient Hydrogen Storage

Efficient hydrogen storage is a challenge of the future. The aim of this work will be primarily the preparation of materials for hydrogen storage, creating graphs from measured data, and possibly assisting with their processing. At the same time, the student will also become familiar with working with an electron microscope. https://www.ipm.cz/

Measurement of the speed of crack propagation in a PE pipe

A well mapped crack propagation mechanism is the basis for accurate lifetime prediction of various components. While crack propagation rate measurement techniques are relatively well developed for metallic materials and the mechanisms are well described, this is not the case for polymeric materials. This work focuses on the measurement of crack propagation rate in various…

Local deformation mapping with 4D STEM software

4D STEM is an advanced transmission electron microscopy technique that simultaneously records a 2D diffraction pattern for each individual image point. Analysis of these patterns can then provide a wealth of information about the phase composition, crystallographic orientation and spatial distribution of microscopic deformations. During the internship the student will learn the basics of data…