Determination of Emissivity of Brass Alloy using Infrared Thermographic Technique

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Abstract

This paper presents the experimental determination of the dependence of emissivity of brass on surface roughness and temperature. The investigation was conducted using the infrared thermographic technique on brass alloy C27200 workpieces with different degrees of surface roughness, during the continuous cooling process. The results obtained showed that the emissivity of the chosen brass alloy increases with greater surface roughness and decreases during the cooling process, its value ranging from 0.07 to 0.19. It was concluded that surface roughness has a greater influence on the increase of the emissivity at higher temperatures, which can be seen in the three-dimensional infrared images. Multiple regression analysis confirmed a strong correlation between the examined parameters and the emissivity, and an original multiple regression model was determined.

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  • [1] Krešák J. Peterka P. Kropuch S. Novák L. (2014): Measurement of tight in steel ropes by a mean of thermovision Measurement 50 pp. 93-98.

  • [2] Kosec B. Karpe B. Budak I. Ličen M. Đorđević M. Nagode A. Kosec G. (2012): Efficiency and quality of inductive heating and quenching of planetary shafts Metallurgy 51 pp. 71-74.

  • [3] Glavaš H. Jozsa L. Barić T. (2016): Infrared thermography in energy audit of electrical installations Tehnički vjesnik 23 pp. 1533-1539.

  • [4] HangJin J. Jonathan K. Kyle B. Kumar S. (2017): Spectral emissivity of oxidized and roughened metal surfaces. International Journal of Heat and Mass Transfer 115 Part B pp. 1065-1071.

  • [5] Švantner M. Honnerová P. Veselý Z. (2016): The influence of furnace wall emissivity on steel charge heating. Infrared Physics & Technology 74 pp. 63-71.

  • [6] Deheng S. Qionglan L. Zunlue Z. Jinfeng S. Baokui W. (2014): Experimental study of the relationships between the spectral emissivity of brass and the temperature in the oxidizing environment. Infrared Physics & Technology 64 pp. 119-124.

  • [7] Zhibin H. Wancheng Z. Xiufeng T. Dongmei Z. Fa L. (2011): Effects of substrate roughness on infrared- emissivity characteristics of Au films deposited on Ni alloy. Thin Solid Films 519 pp. 3100-3106.

  • [8] Wen C.D. Mudawar I. (2004): Emissivity characteristics of roughened aluminum alloy surfaces and assessment of multispectral radiation thermometry (MRT) emissivity models. International Journal of Heat and Mass Transfer 47 pp. 3591-3605.

  • [9] Kosec B. Kosec G. (2003): Temperature field analysis on active working surface of the die-casting die. Metall 57 pp. 134-136.

  • [10] Wen C.D. Mudawar I. (2006): Modeling the effects of surface roughness on the emissivity of aluminum alloys. International Journal of Heat and Mass Transfer 49 pp. 4279-4289.

  • [11] Yang C. Ding Z. Tao Q.C. Liang L. Ding Y.F. Zhang W.W. Zhu Q.L. (2018): High-strength and free-cutting silicon brass alloy C27200es designed via the zinc equivalent rule. Materials Science and Engineering 723 pp. 296-305.

  • [12] Švantner M. Vacíková P. Honner M. (2013): Non-contact charge temperature measurement on industrial continuous furnaces and steel charge emissivity analysis. Infrared Physics & Technology 61 pp. 20-26. doi:

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  • [13] Lanc Z. Štrbac B. Zeljković M. Živković A. Hadžistević M. (2018): Emissivity of Aluminium Alloy using Infrared Thermographic Technique. Materials and Technology 52 pp. 35-40.

  • [14] Motorcu A.R. Isik Y. Kus A. Cakir M.C. (2016): Analysis of the cutting temperature and surface roughness during the orthogonal machining of AISI 4140 alloy steel via the Taguchi method Materials and technology 50(3) 343-351. doi:

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