Browsing by Author "Kulhavý Petr"
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- ItemAlternative Possibilities of Biaxial Testing of Fiber And Fabric Materials in Nonstandard Conditions(ACAD SCI CZECH REPUBLIC, INST THERMOMECHANICS, DOLEJSKOVA 5, PRAGUE 8, 182 00, CZECH REPUBLIC, 2017) Kulhavý Petr; Syrovátková Martina; Petrů Michal
- ItemAnalysis and Study of Vibrations of a Clamping Device used for Winding Carbon Fibers into the Core of a Frame(Technical University of Prague, 2015) Petrů Michal; Kovář Radovan; Martinec Tomáš; Srb Pavel; Lufinka Aleš; Kulhavý Petr
- ItemCam mechanism for car seat testing(Kluwer Academic Publishers, 2017) Srb Pavel; Kulhavý Petr; Fliegel Vítězslav; Lepšík Petr
- ItemCharacteristic comparison of wound and wrapped composite tubes made from carbon prepreg using modal analysis(JVE INT LTD, 2018) Kulhavý Petr; Lepšík Petr
- ItemCOMPARISON OF BENDING PROPERTIES FOR WINDED AND WRAPPED COMPOSITES(2018) Kulhavý Petr; Lepšík Petr
- ItemCOMPARISON OF BENDING PROPERTIES FOR WINDED AND WRAPPED COMPOSITES(Czech University of Life Sciences Prague, 2017) Kulhavý Petr; Lepšík Petr
- ItemComparison of modal characteristic of wrapped and winded composite tubes from carbon prepreg(JVE International, 2017) Kulhavý Petr; Lepšík PetrConstructions based on long fiber composite frames gaining significant and irreplaceable position through almost all traffic sectors. The aim of this presented work is a study of composite rods made by two ways from pre impregnated fibres. In technical practice, one can find applications of so called “prepregs”, especially for so-called wrapping, which is a gradual helical layering of wide tapes. This is a quite simply method with a good quality of final parts, but the using is limited only for straight shapes. Therefore, a method called winding, which is a simultaneous deposition of larger number of fiber filaments was used to handle the problem for curved shapes and fluently changed cross-sections. Even though this method could expand the using of presaturated fibres, in a real case compared with wrapped parts there is evident imperfect alignment and mutually storing of placed fibers. This could be mainly caused by a significant tortuosity and stickiness of the individual fiber strands. The objective the carried work was to experimentally compare the vibrational - modal behavior of two almost identical rods. One was winded and the second kind was wrapped with the same structure of layers, weight and curing parameters. The results of the two compared tubes, that should be theoretically identical, were significantly different. Another step was compilation of a numerical model and verify its suitability for parts created with the two mentioned production methods. The numerical model was in a good agreement with the empirical obtained from the experiment with wrapped parts. However, the using of this standard model also for winded tube is questionable, because of the significantly differences in founded natural frequencies.
- ItemDESIGN CONCEPT OF A DEVICE FOR ALIGNING RUBBER HOSES(Czech Univ Life Sci, Fac Engn, 2018) Srb Pavel; Kulhavý Petr
- ItemDESIGN CONCEPT OF A DEVICE FOR ALIGNING RUBBER HOSES(Czech University of Life Sciences Prague, 2017) Srb Pavel; Kulhavý Petr
- ItemDesign of composite structures using advanced numerical tools(Institute of Technology and Production Management University of J.E. Purkyne, 2018) Kulhavý Petr; Lepšík Petr
- ItemDesign Optimization Of Composite Parts Using Doe Method(Czech University of Life Sciences Prague, 2017) Lepšík Petr; Kulhavý Petr
- ItemDESIGN OPTIMIZATION OF COMPOSITE PARTS USING DOE METHOD(Czech Univ Life Sci, Fac Engn, 2018) Lepšík Petr; Kulhavý Petr
- ItemDevelopment of an anti-flood board to protect the interiors and exteriors of the infrastructure(2018) Petrů Michal; Srb Pavel; Ševčík Ladislav; Martinec Tomáš; Kulhavý PetrThis article deals with the development of an anti-flood board to protect the interior and exterior of various infrastructures, such a houses, cottages or industrial buildings. It was designed prototypes and assembled numerical simulations. In Central Europe and in particular in the Czech Republic, floods are an integral part of the natural water cycle and cause great loss of life and great property damage. The development of new types of mobile anti-flood boards is very important as the design solution is developed for flood protection with regard to minimizing weight, cost of production, easy manipulation, simplicity and speed of installation.
- ItemDevelopment of fire shutters based on numerical optimizations(2018) Novák Ondřej; Kulhavý Petr; Martinec Tomáš; Petrů Michal; Srb PavelThis article deals with a prototype concept, real experiment and numerical simulation of a layered industrial fire shutter, based on some new insulating composite materials. The real fire shutter has been developed and optimized in laboratory and subsequently tested in the certified test room. A simulation of whole concept has been carried out as the non-premixed combustion process in the commercial final volume sw Pyrosim. Model of the combustion based on a stoichiometric defined mixture of gas and the tested layered samples showed good conformity with experimental results – i.e. thermal distribution inside and heat release rate that has gone through the sample.
- Itemdevice for gravel resistance(2015) Petrů Michal; Novák Ondřej; Kulhavý Petr; Srb Pavel; Syrovátková Martina; Vosáhlo Josef; Kovář Radovan
- Itemdevice for simulation of car washing process(2015) Petrů Michal; Novák Ondřej; Srb Pavel; Kulhavý Petr; Syrovátková Martina; Vosáhlo Josef; Kovář Radovan
- ItemDigitization of structured composite plates with regard to their numerical simulations(Univerzita J. E. Purkyne, 2017) Kulhavý Petr; Lepšík Petr
- ItemDynamic analysis of 3D printed and moulded composites with carbon microfibers(2018) Kulhavý Petr; Fliegel Vítězslav; Lepšík Petr; Srb Pavel
- ItemDynamic analysis of PUR foam reinforced with coconut fibres in various thermal conditions(2018) Srb Pavel; Kulhavý Petr; Fliegel Vítězslav; Lepšík Petr
- ItemEffect of fibrous reinforcement on moisture absorption of plaster composites(2019) Samková Alžběta; Kulhavý Petr; Pechočiaková Miroslava
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