Influence of IR camera integration time on the accuracy of Tmax determination during laser interaction with ceramics
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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 / SEMSource:
Proceedings - 9th International Scientific Conference od Defensive Technologies OTEH 2020, Belgrade, 15-16 october 2020, 2020, 9, 417-423Publisher:
- Belgrade : Military Technical Institute
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IHTMTY - 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 .