Browsing Ústav mechaniky těles, mechatroniky a biomechaniky by Title
Now showing items 1-20 of 25
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Biomechanical Evaluation of the MACSTL Internal Fixator for Thoracic Spinal Stabilisation
(University of Veterinary and Pharmaceutical Sciences in Brno, 2008-03-15)Unstable fractures of the thoracic spine in humans represent a serious social and economic issue. They may lead to persistent consequences and chronic disease. The anatomical and biomechanical characteristics of the thoracic ... -
Case study of multiaxial criteria for rolling contact fatigue of bearing steels
(EDP Sciences, 2018-05-25)A rolling contact fatigue (RCF) differs from the classic fatigue in a stress-state. Nowadays, a prediction of the RCF is still not on the sufficient level. A lot of researchers tried to apply different multiaxial fatigue ... -
Characterization of Polyvinylidene Fluoride (PVDF) Electrospun Fibers Doped by Carbon Flakes
(MDPI, 2020-11-24)Polyvinylidene fluoride (PVDF) is a modern polymer material used in a wide variety of ways. Thanks to its excellent resistance to chemical or thermal degradation and low reactivity, it finds use in biology, chemistry, and ... -
Comparison of Different Load Spectra on Residual Fatigue Lifetime of Railway Axle
(Elsevier, 2014-06-18)The railway axles are subjected to variable amplitude loading. The variability is caused by many different regimes of train operation. The dominant load is caused by the weight of the vehicle, which generates rotary bending ... -
Comparison of the Resistance to Bending Forces of the 4.5 LCP Plate-rod Construct and of 4.5 LCP Alone Applied to Segmental Femoral Defects in Miniature Pigs
(University of Veterinary and Pharmaceutical Sciences in Brno, 2010-12-20)The study deals with the determination of mechanical properties, namely resistance to bending forces, of flexible buttress osteosynthesis using two different bone-implant constructs stabilizing experimental segmental femoral ... -
Computational Modelling of the Unbalanced Magnetic Pull by Finite Element Method
(Elsevier, 2012-11-05)This paper presents a process of calculating of the unbalanced magnetic pull in the rotating electrical machines based on the electromagnetic coupled field analysis. The computational model is ... -
Crack propagation in the vicinity of the interface in layered materials
(University of West Bohemia, 2009-01-04)Paper deals with the problem of crack propagation in the vicinity of the interface in layered materials. Layered materials are often used in practice, primarily because of their better mechanical properties in comparison ... -
Crack Protective Layered Architecture of Lead-Free Piezoelectric Energy Harvester in Bistable Configuration
(MDPI, 2020-10-14)Kinetic piezoelectric energy harvesters are used to power up ultra-low power devices without batteries as an alternative and eco-friendly source of energy. This paper deals with a novel design of a lead-free multilayer ... -
Critical applied stresses for a crack initiation from a sharp V-notch
(Gruppo Italiano Frattura, 2014-10-31)The aim of the paper is to estimate a value of the critical applied stress for a crack initiation from a sharp V-notch tip. The classical approach of the linear elastic fracture mechanics (LELM) was generalized, because ... -
Design of pressure sensor based on optical fiber Bragg grating lateral deformation
(MDPI, 2010-12-08)This paper describes steps involved in the design and realization of a new type of pressure sensor based on the optical fiber Bragg grating. A traditional pressure sensor has very limited usage in heavy industrial environments, ... -
The Effect of the Free Surface on the Singular Stress Field at the Fatigue Crack Front
(De Gruyter Open, 2017-11-22)Description of stress singularity in the vicinity of a free surface is presented. Its presence causes the retardation of the fatigue crack growth in that region and fatigue crack is being curved. Numerical model is used ... -
Efficiency of Plasticity Correction in the Hole-Drilling Residual Stress Measurement
(MDPI, 2020-07-31)This paper focuses on the analysis of the plasticity effect in the measurement of the residual stress by the hole-drilling method. Relaxed strains were evaluated by the computational simulation of the hole-drilling experiment ... -
Estimation of stepwise crack propagation in ceramic laminates with strong interfaces
(Gruppo Italiano Frattura, 2015-10-01)The contribution deals with a description of the specific crack behaviour in the layered alumina-zirconia ceramic laminate. The main aim is to clarify crack behaviour in the compressive layer and provide computational tools ... -
Experimental and Computational Evaluation of Rolling Bearing Steel Durability
(Tanger Ltd., 2016-11-09)Rolling element bearings are widely-used machine components and their failure can result in damage to the whole machine. A bearing failure can be caused by many factors. In most cases it is damage on the raceway surface ... -
Finite element analysis of 6 large PMMA skull reconstructions: A multi-criteria evaluation approach
(PLOS, 2017-06-13)In this study 6 pre-operative designs for PMMA based reconstructions of cranial defects were evaluated for their mechanical robustness using finite element modeling. Clinical experience and engineering principles were ... -
A fractographic study of bending/torsion fatigue failure in metallic materials with protective surface layers
(Hindawi, 2016-06-10)Results are given of a fractographic study of biaxial in-phase bending/torsion fatigue fractures in specimens made of nitrided steel and nickel-based superalloy with protective coatings (diffusion coatings and plasma-sprayed ... -
Fracture mechanics parameters of multilayer pipes
(University of West Bohemia, 2007-10-19)Multilayer pipes consisting of different materials are frequently used in praxis because of partial improvement of the properties of pipe systems. To estimate lifetime of these pipes the basic fracture parameters have to ... -
Impact of Decreased Transmural Conduction Velocity on the Function of the Human Left Ventricle: A Simulation Study
(Hindawi, 2020-04-04)This study investigates the impact of reduced transmural conduction velocity (TCV) on output parameters of the human heart. In a healthy heart, the TCV contributes to synchronization of the onset of contraction in individual ... -
Influence of the cell geometry on the tensile strength of open-cell ceramic foams
(Elsevier, 2020-02-19)Nowadays used open cell foam ceramic materials are mostly of irregular structure which means that the shape of particular foam cells does not exhibit any regular pattern. On one hand, such foam structures lead to only very ...