Recent Advances and Current Developments of Molten Pool Temperature Measurement for Laser Additive Manufacturing Processes

Author(s): Zhichao Liu*, Tao Li, Hoyeol Kim, Weilong Cong, Qiuhong Jiang, Hong-Chao Zhang

Journal Name: Recent Patents on Mechanical Engineering

Volume 13 , Issue 1 , 2020

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Background: Molten pool temperature in Laser Additive Manufacturing (LAM) will affect powder efficiency, structural compositions of reactants and products in the molten pool, thus determining the microstructure evolutions and mechanical properties of the final part. An interest in molten pool temperature measurement has been around for a long time since the appearance of LAM. However, a comprehensive summary of the existing methods and their applications does not exist in the literature.

Objective: The state-of-the-art of the existed devices and methods for molten pool temperature measurement in various of LAM processes is reviewed in this paper.

Methods: The existing temperature measurement methods for molten pool monitoring in LAM processes are discussed. For each method, the existed patents, detailed procedures, advantages and disadvantages, specific applications are specified. In the end, comparisons among the current temperature measurement techniques are made according to data accuracy, operation complexity and cost of implementation.

Results: Four methods are currently being used for the molten pool temperature measurement in LAM processes, including (i) Thermocouples, (ii) Infrared pyrometers, (iii) Infrared cameras, and (iv) Charge-coupled-device cameras.

Conclusion: Different measurement methods represent different characteristics of the signal, and each has merits and defects. Selecting suitable measurement method according to different process characteristics will be helpful to achieve a preferable and more convincing results.

Keywords: Charge-coupled-device camera, infrared camera, laser additive manufacturing, pyrometer, temperature measurement technique, thermocouple.

Gu DD, Meiners W, Wissenbach K, Poprawe R. Laser additive manufacturing of metallic components: Materials, processes and mechanisms. Int Mater Rev 2012; 57(3): 133-64.
Kobryn PA, Semiatin SL. The laser additive manufacture of Ti-6Al-4V. J Miner Met Mater Soc 2001; 53(9): 40-2.
Dong S, Yan S, Xu B, Wang Y, Ren W. Laser cladding remanufacturing technology of cast iron cylinder head and its quality evaluation. J Acad Armor Force Eng 2013; 27(1): 90-3.
Mudge RP, Wald NR. Laser engineered net shaping advances additive manufacturing and repair. Weld J 2007; 86(1): 44-8.
Das S, Beama JJ, Wohlert M, Bourell DL. Direct laser freeform fabrication of high performance metal components. Rapid Prototyp J 1998; 4(3): 112-7.
Cherry JA, Davies HM, Mehmood S, Lavery NP, Brown SG, Sienz J. Investigation into the effect of process parameters on microstructural and physical properties of 316L stainless steel parts by selective laser melting. Int J Adv Manuf Technol 2015; 76(5-8): 869-79.
Liu B, Wildman R, Tuck C, Ashcroft I, Hague R. Investigation the effect of particle size distribution on processing parameters optimisation in selective laser melting process Additive Manufacturing Research Group. Loughborough University 2011; pp. 227-38.
Read N, Wang W, Essa K, Attallah MM. Selective laser melting of AlSi10Mg alloy: Process optimisation and mechanical properties development. Mater Des 2015; 65: 417-24.
Jia Q, Gu D. Selective laser melting additive manufacturing of Inconel 718 superalloy parts: Densification, microstructure and properties. J Alloys Compd 2014; 585: 713-21.
Song B, Dong S, Zhang B, Liao H, Coddet C. Effects of processing parameters on microstructure and mechanical property of selective laser melted Ti6Al4V. Mater Des 2012; 35: 120-5.
Griffith ML, Schlienger ME, Harwell LD, Oliver MS, Baldwin MD, Ensz MT, et al. Understanding thermal behavior in the LENS process. Mater Des 1999; 20(2-3): 107-13.
Ye R, Smugeresky JE, Zheng B, Zhou Y, Lavernia EJ. Numerical modeling of the thermal behavior during the LENS® process. Mat Sci Eng A 2006; 428(1-2): 47-53.
Li Y, Gu D. Thermal behavior during selective laser melting of commercially pure titanium powder: Numerical simulation and experimental study. Addit Manuf 2014; 1: 99-109.
Dai D, Gu D. Thermal behavior and densification mechanism during selective laser melting of copper matrix composites: Simulation and experiments. Mater Des 2014; 55: 482-91.
Hua T, Jing C, Xin L, Fengying Z, Weidong H. Research on molten pool temperature in the process of laser rapid forming. J Mater Process Tech 2008; 198(1-3): 454-62.
Khairallah SA, Anderson AT, Rubenchik A, King WE. Laser powder-bed fusion additive manufacturing: Physics of complex melt flow and formation mechanisms of pores, spatter, and denudation zones. Acta Mater 2016; 108: 36-45.
Beaman JJ, Deckard CR. Selective laser sintering with assisted powder handling. US4938816 (1990)
Bruck GJ, Kamel A. Selective laser melting / sintering using powdered flux. US9283593 (2016)
Mercelis P, Kruth JP. Residual stresses in selective laser sintering and selective laser melting. Rapid Prototyping J 2006; 12(5): 254-65.
Kar A, Sankaranarayanan S, Kahlen FJ. One-step rapid manufacturing of metal and composite parts. US6203861 (2001)
Atwood C, Ensz M, Greene D, et al. Laser engineered net shaping (LENS (TM)): A tool for direct fabrication of metal parts.Sandia National Laboratories, Albuquerque, NM, and Livermore, CA. 1998.
Toyserkani E, Khajepour A, Corbin SF. Laser cladding. CRC Press: Boca Raton, FL 2004.
Usher JD, Blaze JE, Phillippi RM. Thermocouple assembly. US5071258 (1991)
George K. Thermocouple probe. US3099575 (1966)
Feldman B. Thin film metal/metal oxide thermocouple. US6072165 (2000)
ASTM Committee E-20 on Temperature Measurement, ASTM Committee E-20 on Temperature Measurement Subcommittee E20 04 on Thermocouples Manual on the use of thermocouples in temperature measurement. ASTM International 1974.
Schotanus P, Nieuwstadt F, De Bruin HA. Temperature measurement with a sonic anemometer and its application to heat and moisture fluxes. Bound-Lay Meteorol 1983; 26(1): 81-93.
O’sullivan D, Cotterell M. Temperature measurement in single point turning. J Mater Process Tech 2001; 118(1-3): 301-8.
Dewes RC, Ng E, Chua KS, Newton PG, Aspinwall DK. Temperature measurement when high speed machining hardened mould/die steel. J Mater Process Tech 1999; 92: 293-301.
Lefebvre A, Vieville P, Lipinski P, Lescalier C. Numerical analysis of grinding temperature measurement by the foil/workpiece thermocouple method. Int J Mach Tool Manu 2006; 46(14): 1716-26.
Bachus KN, Rondina MT, Hutchinson DT. The effects of drilling force on cortical temperatures and their duration: An in vitro study. Med Eng Phys 2000; 22(10): 685-91.
Cong WL, Zou X, Deines TW, Wu N, Wang X, Pei ZJ. Rotary ultrasonic machining of carbon fiber reinforced plastic composites: An experimental study on cutting temperature. J Reinf Plast Comp 2012; 31(22): 1516-25.
Feng Q, Cong WL, Zhang M, Pei ZJ, Ren CZ. An experimental study on temperature in ultrasonic vibration-assisted pelleting of cellulosic biomass. In: Proceedings of the ASME 2010 International Manufacturing Science and Engineering Conference (MSEC). Erie, PA October 2010.
Tang YJ, Chen CM, Wang G. Temperature on-line measured in ultrasonic vibration-assisted pelleting cellulosic biomass. Appl Mech Mater 2012; 151: 245-9.
Hu YP, Chen CW, Mukherjee K. Measurement of temperature distributions during laser cladding process. J Laser Appl 2000; 12(3): 126-30.
Ya W, Pathiraj B, Liu S. 2D modelling of clad geometry and resulting thermal cycles during laser cladding. J Mater Process Tech 2016; 230: 217-32.
Heigel JC, Michaleris P, Reutzel EW. Thermo-mechanical model development and validation of directed energy deposition additive manufacturing of Ti-6Al-4V. Addit Manuf 2015; 5: 9-19.
Denlinger ER, Heigel JC, Michaleris P, Palmer TA. Effect of inter-layer dwell time on distortion and residual stress in additive manufacturing of titanium and nickel alloys. J Mater Process Tech 2015; 215: 123-31.
Masoomi M, Gao X, Thompson SM, Shamsaei N, Bian L, Elwany A. Modeling, simulation and experimental validation of heat transfer during selective laser melting. In: ASME 2015 International Mechanical Engineering Congress and Exposition. Houston, Texas, May 2016.
Hussein A, Hao L, Yan C, Everson R. Finite element simulation of the temperature and stress fields in single layers built without-support in selective laser melting. Mater Des 2013; 52: 638-47.
Li S, Xiao H, Liu K, Xiao W, Li Y, Han X, et al. Melt-pool motion, temperature variation and dendritic morphology of Inconel 718 during pulsed and continuous-wave laser additive manufacturing: A comparative study. Mater Des 2017; 119: 351-60.
Burns GW, Scroger MG. The calibration of thermocouples and thermocouple materials National Institute of Standards and Technology, US Department of Commerce. Gaithersburg, MD 1989.
Kiss LI, Bui RT. Error sources during the measurement of surface temperatures and heat flux on the aluminum electrolysis cells. Proceedings of 38th Annual Meeting of CIM. Québec, QC, Canada. August 1999.
Dezfoli AR, Hwang WS, Huang WC, Tsai TW. Determination and controlling of grain structure of metals after laser incidence: Theoretical approach. Sci Rep 2017; 7: 41527.
Cashdollar KL, Hertzberg M, Litton CD. Multichannel infrared pyrometer. US4142417 (1979)
Tang L, Landers RG. Melt pool temperature control for laser metal deposition processes-part I: Online temperature control. J Manuf Sci Eng 2010; 132(1): 1-9.
Fischer P, Locher M, Romano V, Weber HP, Kolossov S, Glardon R. Temperature measurements during selective laser sintering of titanium powder. Int J Mach Tools Manuf 2004; 44(12): 1293-6.
Huston J, Youssef S. Two-color flame imaging pyrometer. US20070177650 (2007)
Tominaga H, Ohkubo K, Kondo Y. Two-color radiation thermometer. US7114846 (2006)
Tan H, Chen J, Zhang F, Lin X, Huang W. Estimation of laser solid forming process based on temperature measurement. Opt Laser Technol 2010; 42(1): 47-54.
Yadroitsev I, Krakhmalev P, Yadroitsava I. Selective laser melting of Ti6Al4V alloy for biomedical applications: Temperature monitoring and microstructural evolution. J Alloy Compd 2014; 583: 404-9.
Hu D, Kovacevic R. Modelling and measuring the thermal behaviour of the molten pool in closed-loop controlled laser-based additive manufacturing. Proc Inst Mech Eng, B J Eng Manuf 2013; 217(4): 441-52.
Hu D, Kovacevic R. Sensing, modeling and control for laser-based additive manufacturing. Int J Mach Tool Man 2003; 43(1): 51-60.
Salehi D, Brandt M. Melt pool temperature control using LabVIEW in Nd: YAG laser blown powder cladding process. Int J Adv Manuf Tech 2006; 29(3): 273-8.
Song L, Mazumder J. Feedback control of melt pool temperature during laser cladding process. IEEE Trans Control Syst Technol 2010; 19(6): 1349-56.
Müller B, Renz U. Development of a fast fiber-optic two-color pyrometer for the temperature measurement of surfaces with varying emissivities. Rev Sci Instrum 2001; 72(8): 3366-74.
Bowling BR. Infrared thermogram camera and scanning means therefor. US3287559 (1966)
Nakamura T. Infrared monitoring system. US5059796 (1991)
Schwerdtfeger J, Singer RF, Körner C. In situ flaw detection by IR-imaging during electron beam melting. Rapid Prototyp J 2012; 18(4): 259-63.
Rodriguez E, Medina F, Espalin D, Terrazas C, Muse D, Henry C, et al. Integration of a thermal imaging feedback control system in electron beam melting. In: Proceedings of the Solid Freeform Fabrication Symposium. Austin, Texas, USA August 2012.
Craeghs T, Clijsters S, Kruth JP, Bechmann F, Ebert MC. Detection of process failures in layerwise laser melting with optical process monitoring. Phys Procedia 2012; 39: 753-9.
Krauss H, Eschey C, Zaeh M. Thermography for monitoring the selective laser melting process. In: Proceedings of the Solid Freeform Fabrication Symposium. Austin, Texas, USA August 2012.
Bennett JL, Ehmann K, Cao J. Systems and methods for global thermal control of additive manufacturing. US20190184494 (2019)
Vilajosana X, Cortes S, Rossow Y. Temperature determination in additive manufacturing systems. US20180186079 (2018)
Kolossov S, Boillat E, Glardon R, Fischer P, Locher M. 3D FE simulation for temperature evolution in the selective laser sintering process. Int J Mach Tools Manuf 2004; 44(2-3): 117-23.
Yves-Christian H, Jan W, Wilhelm M, Konrad W, Reinhart P. Net shaped high performance oxide ceramic parts by selective laser melting. Phys Procedia 2010; 5: 587-94.
Farshidianfar MH, Khajepour A, Gerlich AP. Effect of real-time cooling rate on microstructure in laser additive manufacturing. J Mater Process Tech 2016; 231: 468-78.
Boulanger P, Hoelter TR, Sharp B, Kurth EA. Infrared camera calibration techniques. US20159143703 2015.
Mallet R, Snell J, Saltzman J, Moore D, Warner P. utomated camera calibration methods and systems. US20179641830 (2017)
Hatlestad JD, Sauter GF. Single charge-coupled-device camera for detection and differentiation of desired objects from undesired objects. US5661817 (1997)
Zhang Y, Lang X, Hu Z, Shu S. Development of a CCD-based pyrometer for surface temperature measurement of casting billets. Meas Sci Technol 2017; 28(6) 065903
Kleszczynski S, Zur Jacobsmühlen J, Sehrt J, Witt G. Error detection in laser beam melting systems by high resolution imaging. In: Proceedings of the Solid Freeform Fabrication Symposium. Austin, Texas, USA August 2012.
Fathi A, Toyserkani E, Khajepour A, Durali M. Prediction of melt pool depth and dilution in laser powder deposition. J Phys D Appl Phys 2006; 39(12): 2613-23.
Chen Y, Li X. Surface projection tool for multi-axis additive manufacturing. US20180194064 (2018)
Reichenbacher M, Stammberger J, Vierling C. Apparatus for additively manufacturing of three-dimensional objects. US20180133635 (2018)
Wang L, Felicelli S. Process modeling in laser deposition of multilayer SS410 steel. J Manuf Sci Eng 2007; 129(6): 1028-34.
Meriaudeau F, Truchetet F. Control and optimization of the laser cladding process using matrix cameras and image processing. J Laser Appl 1996; 8(6): 317-24.
Kledwig C, Perfahl H, Reisacher M, Brückner F, Bliedtner J, Leyens C. Analysis of melt pool characteristics and process parameters using a coaxial monitoring system during directed energy deposition in additive manufacturing. Materials 2019; 12(2): 308.
Tan EZ, Pang JH, Kaminski J. Laser metal deposition in-situ process control for different build strategies. Proceedings of the 3rd International Conference on Progress in Additive Manufacturing. Singapore. May 2018.

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Year: 2020
Page: [13 - 23]
Pages: 11
DOI: 10.2174/2212797612666191023095106
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