EN 16714-3:2016

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Neporušitveno preskušanje - Termografsko preskušanje - 3. del: Izrazi in definicijeZerstörungsfreie Prüfung - Thermografische Prüfung - Teil 3: BegriffeEssais non destructifs - Essais thermographiques - Partie 3: Termes et définitionsNon-destructive testing - Thermographic testing - Part 3: Terms and definitions19.100Neporušitveno preskušanjeNon-destructive testing01.040.19Preskušanje (Slovarji)Testing (Vocabularies)ICS:Ta slovenski standard je istoveten z:EN 16714-3:2016SIST EN 16714-3:2016en,fr,de01-november-2016SIST EN 16714-3:2016SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 16714-3
August
t r s x ICS
r sä r v rä s {â
s {ä s r r English Version
Nonædestructive testing æ Thermographic testing æ Part
uã Terms and definitions Essais non destructifs æ Analyses thermographiques æ Partie
uã Termes et définitions
Zerstörungsfreie Prüfung æ Thermografische Prüfung æ Teil
uã Begriffe This European Standard was approved by CEN on
t w June
t r s xä
egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels
t r s x CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
s x y s væ uã t r s x ESIST EN 16714-3:2016

ratio of absorbed radiant power to the incident radiant power Note 1 to entry: Absorptance may vary with wavelength, temperature and angle. 2.2 active thermography thermographic procedure in which an artificial or natural source of energy is used to produce a non-stationary heat flux for the purpose of testing 2.3 anti-reflectance coating coating of infrared or optical elements (lenses, protective windows) to increase the transmission of certain wavelength ranges by minimizing or suppressing reflections at interfaces 2.4 atmospheric temperature Tatm temperature of the atmosphere between camera and measured object 2.5 atmospheric attenuation reduction of flux densities of electromagnetic radiation on the path through the atmosphere Note 1 to entry: The atmosphere between object and camera attenuates IR radiation. Besides absorption of radiation by gases, e.g. water vapour (H2O) and carbon dioxide (CO2), radiation is attenuated by scattering (dust, fog, rain, snow, etc.). 2.6 comparative thermography thermographic procedure that evaluates temperature differences or phase differences or differences of secondary parameters 2.7 chromatic aberration wavelength dependent aberration of lens Note 1 to entry: Due to dispersion (wavelength dependent index of refraction), different spectral parts are imaged in different image planes. This aberration is increasing with the spectral bandwidth of captured radiation. SIST EN 16714-3:2016

Temperature differences are used, e.g. for subtracting the temperature of an undisturbed area or for subtracting the zero image (thermogram before heating) from a data sequence. 2.11 diffraction limit limit of spatial resolution due to diffraction of optical systems Note 1 to entry: Diffraction at diaphragms, lens holders, etc. physically limits the spatial resolution of IR cameras. The limit can be estimated with the Rayleigh criterion. Diffraction depends on the wavelength of radiation as well as shape and dimension of beam-narrowing components. 2.12 emissivity
ratio of the power radiated by real bodies to the power that is radiated by a black-body at the same temperature Note 1 to entry: The emissivity can depend on the wavelength, the angle of emission, the body temperature and other factors. In this general case the ratio of the spectral radiance of a real body and a black-body is called spectral directional emissivity. In thermography practice, only the emissivity within the spectral sensitivity range of the IR camera is relevant. It is used for correcting temperature measurements carried out with the IR camera (settings of IR cameras for temperature measurements). 2.13 extension ring ring that is placed between the camera and the lens to increase the distance between image plane and lens (increase of magnification)
...