A5046990231- Fatigue and fracture mechanics
- Mechanical Behavior of Composites
- Material Properties and Failure Mechanisms
- Numerical methods in engineering
- Advanced ceramic materials synthesis
- Engineering Structural Analysis Methods
- Composite Material Mechanics
- Structural Integrity and Reliability Analysis
- Mechanical stress and fatigue analysis
- Geotechnical Engineering and Underground Structures
- Mechanical and Thermal Properties Analysis
- High-Velocity Impact and Material Behavior
- Non-Destructive Testing Techniques
- Fire effects on concrete materials
- Polymer Nanocomposites and Properties
- Additive Manufacturing Materials and Processes
- Aluminum Alloys Composites Properties
- High Temperature Alloys and Creep
- Material Properties and Applications
- Ultrasonics and Acoustic Wave Propagation
- Mechanical Failure Analysis and Simulation
- Asphalt Pavement Performance Evaluation
- Welding Techniques and Residual Stresses
- Probabilistic and Robust Engineering Design
- Additive Manufacturing and 3D Printing Technologies
Czech Academy of Sciences, Institute of Physics of Materials
2015-2024
Central European Institute of Technology
2012-2023
Central European Institute of Technology – Masaryk University
2013-2019
Brno University of Technology
2008-2017
Czech Academy of Sciences
2011-2017
It has been documented that the hierarchical character of microstructure produced by laser powder bed fusion (L-PBF) is key to superior mechanical properties. Especially important a fine cell possessing heterogeneous distribution dislocation density and alloying elements. Despite multiple studies have investigated effect such L-PBF structure on stress-strain response during monotonic loading, just few investigations were devoted cyclic behaviour. The present study delivers an insight into...
Polyethylene pressure pipes are designed for service lives of at least 50 years. While so far lifetimes have been assessed by pipe tests, due to improved slow crack growth (SCG) resistance and increased testing times such tests not suitable anymore modern grades. The paper presents an alternative methodology lifetime prediction, combining practical advantages the cyclic cracked round bar (CRB) test linear elastic fracture mechanics. A major advantage this procedure is that material...
Abstract Statistical distribution of residual fatigue life (RFL) railway axles under given loading was computed using the Monte Carlo method by considering random variation selected input parameters. Experimental data for EA4T axle steel, spectrum, press fit and stress induced surface hardening were considered in crack propagation simulations. Usually, material properties measured tensile tests are to be most informative source data. Under loading, however, growth rates near threshold...
The failure mode termed long time brittle (due to slow crack growth – SCG) limits the lifetime of plastic pipes. There are now two main accelerated tests (PENT and FNCT) that enable us estimate HDPE used in plastics For unimodal grades, corresponding these is about ten hours, for bimodal grade PE 100 it roughly a thousand hours new RC greater than 1 year. pipes with higher resistance against SCG, some modification or, alternatively, should be developed make possible even materials obtain...
The railway axles are subjected to variable amplitude loading. variability is caused by many different regimes of train operation. dominant load the weight vehicle, which generates rotary bending during movement. Nevertheless, there additional forces, generated when goes through curved track, over crossovers, switches, rail joints etc. Present non-destructive defectoscopy can reliably detect only relatively long cracks (approximately 2 mm or longer). Hence a risk that existing crack not...