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Review of the topographic and profilometric methods developed in the Joint laboratory of optics in Olomouc
Rössler, T.; Mandát, Dušan; Hrabovský, Miroslav
2005 - Czech
The presented paper is dealt with the methods of the optical 3D measurement of the shape of objects. Generally, optical methods are employed especially for the possibility of contact-less measurement. The presented mehods are the shadow and projection moiré topograpy and the computational, Fourier and stereoscopic profilometry. Jedná se o přehledový článek, v němž jsou prezentovány topografické metody vyvíjené ve Společné laboratoři optiky v Olomouci.
Keywords:
profilometry; topography; 3D shape measurement; moiré topography; Fourier profilometry; computational profilomery; stereoscopic profilometry
Available at various institutes of the ASCR
Review of the topographic and profilometric methods developed in the Joint laboratory of optics in Olomouc
The presented paper is dealt with the methods of the optical 3D measurement of the shape of objects. Generally, optical methods are employed especially for the possibility of contact-less measurement. ...
Properties of TIO.sub.x./sub. films deposited at atmosphere pressure
Sedláková, L.; Hubička, Zdeněk; Churpita, Olexandr; Stranyánek, Martin; Čtvrtlík, Radim; Špatenka, P.
2005 - Czech
TiOx films were deposited on silica glass by RF discharge in atmosphere pressure at low substrate temperature. Some properties of the films were studied depending on annealing temperature after deposition. The thickness, nanohardness, crystallinity and speed of photocatalysis degradation were investigated. TIO.sub.x./sub. byli deponovány za použití RF bariérového pochodňového výboje, který pracuje za atmosférického tlaku a při nízké teplotě substrátu. Jako prekurzor byly použity páry Titanium (IV) isopropoxide Ti[OCH(CH..sub.3./sub.).sub.2./sub.].sub.4./sub. a jako substrát křemenné sklo.Depoziční podmínky při tvorbě vrstev byly u všech vzorků stejné. Byly zkoumány vlastnosti vrstev v závislosti na teplotě žíhání po depozici. U vrstev byla hodnocena tloušťka, anotvrdost, krystalinita vrstev metodou XRD difrakce a rychlost fotokatalytické degradace.
Keywords:
TIO.sub.x./sub. vrstvy; XRD difrakce
Available at various institutes of the ASCR
Properties of TIO.sub.x./sub. films deposited at atmosphere pressure
TiOx films were deposited on silica glass by RF discharge in atmosphere pressure at low substrate temperature. Some properties of the films were studied depending on annealing temperature after ...
Contribution to diffraction analysis of macroscopic and microscopic residual stresses in surface layers of shot-peened steels
Ganev, N.; Čerňanský, Marian; Drahokoupil, Jan; Kolařík, K.
2005 - Czech
The description and the results of the study of depth profiles of residual stresses in surface layers of shot-peened steels. The influence of the intensity of shot peening and correlations between the absolute values of macroscopic and microscopic stresses on surfaces of materials were studied. Popis a výsledky studia hloubkových profilů zbytkových napětí v povrchových v povrchových vrstvách balotinovaných ocelí. Byl studován vliv intenzity kuličkování a korelace mezi absolutními hodnotami makroskopických a mikroskopických napětí na povrchu jednotlivých materiálů.
Keywords:
macroscopic and microscopic residual stresses; X-ray diffraction; shot peening; steels
Available at various institutes of the ASCR
Contribution to diffraction analysis of macroscopic and microscopic residual stresses in surface layers of shot-peened steels
The description and the results of the study of depth profiles of residual stresses in surface layers of shot-peened steels. The influence of the intensity of shot peening and correlations between the ...
Non-contact measurement of specific elongation of the rubber specimen by means of properties of speckle correlation
Wagnerová, Petra; Horváth, Pavel; Šmíd, Petr; Hrabovský, Miroslav
2005 - Czech
This paper presents the usage of speckle correlation for the measurement of specific elongation of rubber specimen. Velký zájem o nedestruktivní měření deformace povrchu vede k úsilí najít nové metody pro řešení tohoto problému. Jako velmi užitečné se jeví využít dobře známého optického jevu nazývaného koherenční zrnitost.
Keywords:
speckle; specific elongation; correlation
Available at various institutes of the ASCR
Non-contact measurement of specific elongation of the rubber specimen by means of properties of speckle correlation
This paper presents the usage of speckle correlation for the measurement of specific elongation of rubber specimen.
Evaluation of mechanical properties of thin films and coatings by the system NanoTest™ NT600
Čtvrtlík, Radim; Stranyánek, Martin; Boháč, Petr; Jastrabík, Lubomír; Hrabovský, Miroslav
2005 - Czech
This article deals with evaluation of mechanical properties of thin films and coatings by the system NanoTest™ NT600. Systém NanoTest™ NT600 je univerzální zařízení určené pro vyšetřování mechanických vlastností tenkých vrstev a povlaků, jež umožňuje měřit tvrdost, vyhodnocovat elastický modul, adhezi, únavové, lomové, ale také dynamické vlastnosti.
Keywords:
NanoTest™; nanoindentation; scratch test; impact test; impulse test; acoustic emission; pin on disc
Available at various institutes of the ASCR
Evaluation of mechanical properties of thin films and coatings by the system NanoTest™ NT600
This article deals with evaluation of mechanical properties of thin films and coatings by the system NanoTest™ NT600.
Study of hard and abrasion resistant films on surface of nickel moulds
Cerman, J.; Špatenka, P.; Stranyánek, Martin; Čtvrtlík, Radim
2005 - Czech
The paper is dealing with some possibilities of using hard and abrasion resistant films deposited by PVD technology on less noble materials. The films are tested by some experimental equipment developed by TU Liberec simulated real wear. Contact profilometer is used. Thickness and Berkovich nanohardness are determined. Práce pojednává o možnostech použití tvrdých a otěruvzdorných vrstev, deponovaných technologií PVD, na povrchu forem vytvořených z méně ušlechtilých materiálů. Zkoumané vrstvy jsou testovány na otěruvzdornost pomocí experimentálního zařízení, navrženého v TU Liberec, simulující podmínky opotřebení formy během reálného provozu. Velikost opotřebení je vyhodnocena pomocí kontaktního profilometru. U vrstev je dále určena tloušťka pomocí kalotestu a nanotvrdost - typ Berkovich.
Keywords:
PVD technology; profilometer; Berkovich nanohardness
Available at various institutes of the ASCR
Study of hard and abrasion resistant films on surface of nickel moulds
The paper is dealing with some possibilities of using hard and abrasion resistant films deposited by PVD technology on less noble materials. The films are tested by some experimental equipment ...
The evaluation of the dentine surface by means of SEM & AFM after previous exposure to ND:YAG laser
Zapletalová, Z.; Peřina st., Jan; Novotný, R.; Kubínek, R.; Chmelíčková, Hana
2004 - Czech
Dentine senzitivity is a common complaint of pacients in dental offices. They are caused by the opening of dentine tubules. This may be due to enamel or cementum loss or due to the dentine exposure in the area of cementum-enamel junction. A procedure with long-lasting effect seems to be the closure of the exposed dental tubules on the teeth surface by means of CO 2 or ND:YAD laser. Dentinová senzitivita je běžnou stížností pacienta ve stomatologických ordinacích. Je způsobena otevřením dentinových tubulů po ztrátě skloviny nebo cementu či při odhalení dentinu v oblasti cementosklovinné hranice. Metodou s předpokládaným dlouhodobějším účinkem je zatavení odhalených dentinových tubulů na povrchu zubu pomocí CO 2 laseru nebo ND:YAG laseru.
Keywords:
Nd:YAG laser; dentin
Available at various institutes of the ASCR
The evaluation of the dentine surface by means of SEM & AFM after previous exposure to ND:YAG laser
Dentine senzitivity is a common complaint of pacients in dental offices. They are caused by the opening of dentine tubules. This may be due to enamel or cementum loss or due to the dentine exposure in ...
Ultrasound and electromagnetic rapid tests of modification effect spheroidal or vermicular graphite cast irons manufacturing
Skrbek, B.; Nosek, V.; Tomáš, Ivan; Stupakov, Oleksandr
2004 - Czech
Measurement of speed of sound in a wedge samople immediately after the eutectic reaction is finished. Measurement of electric resistance of a ring sample during the eutectic reaction. Outlook for magnetic tests. Measurement of speed of sound in a wedge samople immediately after the eutectic reaction is finished. Measurement of electric resistance of a ring sample during the eutectic reaction. Outlook for magnetic tests.
Keywords:
cast iron; eutectic reaction; speed of sound; electric resistance; magnetic tests
Available at various institutes of the ASCR
Ultrasound and electromagnetic rapid tests of modification effect spheroidal or vermicular graphite cast irons manufacturing
Measurement of speed of sound in a wedge samople immediately after the eutectic reaction is finished. Measurement of electric resistance of a ring sample during the eutectic reaction. Outlook for ...
Analysis of abrasion of cotyles
Mandát, Dušan; Nožka, Libor; Hrabovský, Miroslav
2004 - Czech
The 3D optical scanning topography is one possible method of an analysis of the cotyle deformation. The object of this experiment is to quantify the decrease of cotyle material. The scanning object is polyethylene coxa cotyle ABG1.The cotyle is a plastic fossette surounded with metal cage, which is connected with a coxa of the patients. Due to use the deformation of the surface arise. Použití 3D optické skenovací topografie je jednou z možných metod analýzy deformace umělých jamek kyčelních kloubů. Cílem měření je určit úbytek kloubního materiálu. Skenovaným objektem je polyethylenový kloub ABG1. Umělý kyčelní kloub je tvořen umělohmotnou jamkou obklopenou kovovou klecí, která je spojena s kyčlí pacienta. S dobou užívání deformace kloubní jamky roste.
Keywords:
cotyle; 3D optical topography; coxa; surface; mass deformation; juncture
Available at various institutes of the ASCR
Analysis of abrasion of cotyles
The 3D optical scanning topography is one possible method of an analysis of the cotyle deformation. The object of this experiment is to quantify the decrease of cotyle material. The scanning object is ...
Microstructure and phase composition of rapidly solidified Al-Ni-Zr alloys
Verner, J.; Vojtěch, D.; Bártová, Barbora; Gemperle, Antonín; Studnička, Václav
2004 - Czech
Aluminium alloys with transition elements prepared by rapid qienchinf methods have tendencies to form nanocrystalline and amorphous structures. These alloys high tensile strength and good stability at higher temperature. Microstructure, phase composition and changes at elevated temperature of AlNi 18.5 and AlNi 17 Zr 1.8 alloys have been investigated in our experimental study. Rychle stuhlé slitiny hliníku s přechodnými kovy mají snahu tvořit nanokrystalické až amorfní struktury. Tyto slitiny dále vykazují vyšší pevnost a dobrou stabilitu při zvýšených teplotách. V experimentu byla zkoumána mikrostruktura, fázové složení a změny při zvýšených teplotách slitin AlNi 18.5 a AlNi 17 Zr 1.8 , připravených metodou melt spinning (planar flow casting).
Keywords:
rapid solidification; Al-Ni-Zr alloy; microcrystalline alloys; microstructure; phase composition; mikrostruktura
Available at various institutes of the ASCR
Microstructure and phase composition of rapidly solidified Al-Ni-Zr alloys
Aluminium alloys with transition elements prepared by rapid qienchinf methods have tendencies to form nanocrystalline and amorphous structures. These alloys high tensile strength and good stability at ...
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