About: Nonlinear Behavior in Compression and Tension of Thermally Sprayed Ceramic Coatings

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Vztah napětí-deformace termicky stříkaných keramických povlaků je silně nelineární. Při tlakových napětích vede elastické uzavírání mikrotrhlin k postupnému snižování jejich hustoty a k růstu modulu pružnosti v tlaku. Při tahových napětích mikrotrhliny mírně rostou neelastickými procesy a efektivní modul pružnosti v tahu klesá. Je použita dvouparametrická rovnice, obsahující lineární a kvadratické členy, k popisu nelineární křivky napětí-deformace. Je diskutován lom keramických povlaků, způsobený koalescencí mikrotrhlin. (cs) The stress-strain relations of thermally sprayed ceramic coatings are strongly nonlinear. Under compressive stresses, elastic closing of microcracks leads to a gradual decrease of the microcrack density and to an increase of Young’s modulus in compression. Under tensile stresses, the microcracks slightly grow by inelastic processes; the microcrack density gradually increases and effective Young’s modulus in tension decreases. A two-parametric equation containing linear and quadratic terms is used to describe the nonlinear stress-strain curves. The fracture of ceramic coatings at higher tensile stresses due to coalescence of the microcracks is discussed. The stress-strain relations of thermally sprayed ceramic coatings are strongly nonlinear. Under compressive stresses, elastic closing of microcracks leads to a gradual decrease of the microcrack density and to an increase of Young’s modulus in compression. Under tensile stresses, the microcracks slightly grow by inelastic processes; the microcrack density gradually increases and effective Young’s modulus in tension decreases. A two-parametric equation containing linear and quadratic terms is used to describe the nonlinear stress-strain curves. The fracture of ceramic coatings at higher tensile stresses due to coalescence of the microcracks is discussed. (en)
Title	Nonlinear Behavior in Compression and Tension of Thermally Sprayed Ceramic Coatings Nelineární chování v tlaku a tahu termicky stříkaných keramických povlaků (cs) Nonlinear Behavior in Compression and Tension of Thermally Sprayed Ceramic Coatings (en)
skos:prefLabel	Nonlinear Behavior in Compression and Tension of Thermally Sprayed Ceramic Coatings Nelineární chování v tlaku a tahu termicky stříkaných keramických povlaků (cs) Nonlinear Behavior in Compression and Tension of Thermally Sprayed Ceramic Coatings (en)
skos:notation	RIV/61389021:_____/07:00094023!RIV08-AV0-61389021
http://linked.open.../vavai/riv/strany	84;95
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA106/05/0483), Z(AV0Z20430508)
http://linked.open...iv/cisloPeriodika	1
http://linked.open...vai/riv/dodaniDat	2008
http://linked.open...aciTvurceVysledku	Kroupa, František
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav fyziky plazmatu AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	437502
http://linked.open...ai/riv/idVysledku	RIV/61389021:_____/07:00094023
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Coatings; microcracks; nonlinear behavior; plasma-sprayed ceramics; Young’s moduli; fracture (en)
http://linked.open.../riv/klicoveSlovo	microcracks fracture Coatings plasma-sprayed ceramics Young’s moduli nonlinear behavior
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[C28C09069957]
http://linked.open...i/riv/nazevZdroje	Journal of Thermal Spray Technology
http://linked.open...in/vavai/riv/obor	JL
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	1 (xsd:int)
http://linked.open...vavai/riv/projekt	Influence of microstructure on mechanical properties of thermally sprayed
http://linked.open...UplatneniVysledku	2007
http://linked.open...v/svazekPeriodika	16
http://linked.open...iv/tvurceVysledku	Kroupa, František
http://linked.open...n/vavai/riv/zamer	Physical and chemical processes in plasmas and theis applications
issn	1059-9630
number of pages	12 (xsd:int)

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