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Influence of IR camera integration time on the accuracy of Tmax determination during laser interaction with ceramics

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Authors
Knežević, Dragan
Ristić, Slavica
Polić, Suzana
Radojković, Bojana
Tomić, Ljubiša
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Војно-технички институт Београд
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Abstract
This paper presents the results of an infrared thermography (IRT) application for monitoring temperature distribution on a ceramic surface during Nd: YAG laser irradiation. The laser operated in the Q-switch mode with λ= 1064 nm. The duration of a pulse was τ = 8 ns. The repetition rate was f l = 1-20 Hz. FLIR, E40 and SC7200 IR cameras were used. Recording of the maximum temperature in the irradiated zones is very important information related to the damage threshold of materials. The tested sample is a piece of a ceramic tile. A large number of factors affect determination of the maximum temperature in the very fast processes as it is irradiation with laser pulse duration of 8 ns. One of them is the camera integration time. The experimental results have shown that IR cameras, even those with high performance such as SC7200, cannot record the maximum temperature value at the moment of laser operation, but only the av...erage temperature of the bulk sample material after laser pulses. The microstructure and micromorphology of the ceramic surface after the laser treatment were analyzed by optical and scanning electron microscopy.

Keywords:
Laser / IR thermography / ceramics / surface properties / OM / SEM
Source:
Proceedings - 9th International Scientific Conference od Defensive Technologies OTEH 2020, Belgrade, 15-16 october 2020, 2020, 9, 417-423
Publisher:
  • Belgrade : Military Technical Institute
Funding / projects:
  • Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 200026 (University of Belgrade, Institute of Chemistry, Technology and Metallurgy - IChTM) (RS-200026)

ISBN: 978-86-81123-83-6

[ Google Scholar ]
Handle
https://hdl.handle.net/21.15107/rcub_cer_4076
URI
https://cer.ihtm.bg.ac.rs/handle/123456789/4076
Collections
  • Radovi istraživača / Researchers' publications
Institution/Community
IHTM
TY  - CONF
AU  - Knežević, Dragan
AU  - Ristić, Slavica
AU  - Polić, Suzana
AU  - Radojković, Bojana
AU  - Tomić, Ljubiša
PY  - 2020
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4076
AB  - This  paper  presents  the  results  of  an  infrared  thermography  (IRT)  application  for  monitoring  temperature 
distribution on a ceramic surface during Nd: YAG laser irradiation. The laser operated in the Q-switch mode with λ= 
1064 nm. The duration of a pulse was τ = 8 ns. The repetition rate was f  l = 1-20 Hz. FLIR, E40 and SC7200 IR cameras 
were used. Recording  of the  maximum  temperature  in  the  irradiated  zones is very important  information  related  
to  the damage threshold of materials.  The tested sample is a piece of a ceramic tile. A large number of factors affect 
determination of the maximum temperature in the very fast processes as it is irradiation with laser pulse duration of 8 
ns.  One of them is the camera integration time. The experimental results have  shown  that  IR  cameras,  even  those  
with  high  performance  such  as SC7200,  cannot  record  the  maximum  temperature  value  at  the  moment  of laser  
operation,  but  only  the  average  temperature  of  the  bulk  sample material  after  laser  pulses.   The microstructure 
and  micromorphology  of  the  ceramic  surface  after  the  laser treatment  were  analyzed  by  optical  and  scanning  
electron  microscopy.
PB  - Belgrade : Military Technical Institute
C3  - Proceedings - 9th International Scientific Conference od Defensive Technologies OTEH 2020, Belgrade, 15-16 october 2020
T1  - Influence of IR camera integration time on the accuracy of Tmax determination during laser interaction with ceramics
VL  - 9
SP  - 417
EP  - 423
UR  - https://hdl.handle.net/21.15107/rcub_cer_4076
ER  - 
@conference{
author = "Knežević, Dragan and Ristić, Slavica and Polić, Suzana and Radojković, Bojana and Tomić, Ljubiša",
year = "2020",
abstract = "This  paper  presents  the  results  of  an  infrared  thermography  (IRT)  application  for  monitoring  temperature 
distribution on a ceramic surface during Nd: YAG laser irradiation. The laser operated in the Q-switch mode with λ= 
1064 nm. The duration of a pulse was τ = 8 ns. The repetition rate was f  l = 1-20 Hz. FLIR, E40 and SC7200 IR cameras 
were used. Recording  of the  maximum  temperature  in  the  irradiated  zones is very important  information  related  
to  the damage threshold of materials.  The tested sample is a piece of a ceramic tile. A large number of factors affect 
determination of the maximum temperature in the very fast processes as it is irradiation with laser pulse duration of 8 
ns.  One of them is the camera integration time. The experimental results have  shown  that  IR  cameras,  even  those  
with  high  performance  such  as SC7200,  cannot  record  the  maximum  temperature  value  at  the  moment  of laser  
operation,  but  only  the  average  temperature  of  the  bulk  sample material  after  laser  pulses.   The microstructure 
and  micromorphology  of  the  ceramic  surface  after  the  laser treatment  were  analyzed  by  optical  and  scanning  
electron  microscopy.",
publisher = "Belgrade : Military Technical Institute",
journal = "Proceedings - 9th International Scientific Conference od Defensive Technologies OTEH 2020, Belgrade, 15-16 october 2020",
title = "Influence of IR camera integration time on the accuracy of Tmax determination during laser interaction with ceramics",
volume = "9",
pages = "417-423",
url = "https://hdl.handle.net/21.15107/rcub_cer_4076"
}
Knežević, D., Ristić, S., Polić, S., Radojković, B.,& Tomić, L.. (2020). Influence of IR camera integration time on the accuracy of Tmax determination during laser interaction with ceramics. in Proceedings - 9th International Scientific Conference od Defensive Technologies OTEH 2020, Belgrade, 15-16 october 2020
Belgrade : Military Technical Institute., 9, 417-423.
https://hdl.handle.net/21.15107/rcub_cer_4076
Knežević D, Ristić S, Polić S, Radojković B, Tomić L. Influence of IR camera integration time on the accuracy of Tmax determination during laser interaction with ceramics. in Proceedings - 9th International Scientific Conference od Defensive Technologies OTEH 2020, Belgrade, 15-16 october 2020. 2020;9:417-423.
https://hdl.handle.net/21.15107/rcub_cer_4076 .
Knežević, Dragan, Ristić, Slavica, Polić, Suzana, Radojković, Bojana, Tomić, Ljubiša, "Influence of IR camera integration time on the accuracy of Tmax determination during laser interaction with ceramics" in Proceedings - 9th International Scientific Conference od Defensive Technologies OTEH 2020, Belgrade, 15-16 october 2020, 9 (2020):417-423,
https://hdl.handle.net/21.15107/rcub_cer_4076 .

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