Application of flash-pulse thermography methods for quantitative thickness inspection of coatings made by different thermal spraying technologies

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23640%2F21%3A43960945" target="_blank" >RIV/49777513:23640/21:43960945 - isvavai.cz</a>

Výsledek na webu

<a href="https://authors.elsevier.com/a/1cFiwwevWD9H7" target="_blank" >https://authors.elsevier.com/a/1cFiwwevWD9H7</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.surfcoat.2020.126748" target="_blank" >10.1016/j.surfcoat.2020.126748</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Application of flash-pulse thermography methods for quantitative thickness inspection of coatings made by different thermal spraying technologies

Popis výsledku v původním jazyce

Flash-pulse thermography is a nondestructive testing method, which is based on thermal excitation and response analysis of a tested sample. It is the traditional method for a non-destructive inspection of discontinuities and inhomogeneities at a sample surface, which is also applicable for a qualitative inspection of coating thickness variations. Possibilities of a quantitative inspection of the coating thickness are investigated numerically and experimentally in this contribution. Pulse-phase and power-function methods are compared and an ambiguity of the pulse-phase evaluation of coating thickness is presented on numerical computation results. Measurement and evaluation procedures are introduced and inspection results are presented for Fe-Cr, Sn-Sb-Cu and WC-CoCr coatings made by TWAS (Twin Wire Arc Spray), flame spraying and HVOF (High Velocity Oxygen Fuel) technologies, respectively. Sensitivity of a response of the power-function method to a change of thickness of the inspected coatings in a connection with their structure is presented. It is demonstrated, that a sensitivity of about 10 μm can be achieved for the analyzed coatings of a thickness in the range 74-1240 μm.

Název v anglickém jazyce

Application of flash-pulse thermography methods for quantitative thickness inspection of coatings made by different thermal spraying technologies

Popis výsledku anglicky

Flash-pulse thermography is a nondestructive testing method, which is based on thermal excitation and response analysis of a tested sample. It is the traditional method for a non-destructive inspection of discontinuities and inhomogeneities at a sample surface, which is also applicable for a qualitative inspection of coating thickness variations. Possibilities of a quantitative inspection of the coating thickness are investigated numerically and experimentally in this contribution. Pulse-phase and power-function methods are compared and an ambiguity of the pulse-phase evaluation of coating thickness is presented on numerical computation results. Measurement and evaluation procedures are introduced and inspection results are presented for Fe-Cr, Sn-Sb-Cu and WC-CoCr coatings made by TWAS (Twin Wire Arc Spray), flame spraying and HVOF (High Velocity Oxygen Fuel) technologies, respectively. Sensitivity of a response of the power-function method to a change of thickness of the inspected coatings in a connection with their structure is presented. It is demonstrated, that a sensitivity of about 10 μm can be achieved for the analyzed coatings of a thickness in the range 74-1240 μm.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10306 - Optics (including laser optics and quantum optics)

Projekt

<a href="/cs/project/EF18_069%2F0010018" target="_blank" >EF18_069/0010018: LABIR-PAV / Předaplikační výzkum infračervených technologií</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Surface and Coatings Technology

ISSN

0257-8972

e-ISSN

—

Svazek periodika

406

Číslo periodika v rámci svazku

JAN 25 2021

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

7

Strana od-do

"NESTRÁNKOVÁNO"

Kód UT WoS článku

000604750600053

EID výsledku v databázi Scopus

2-s2.0-85097779670