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پایش برخط دینامیک حوضچه مذاب در روکشکاری لیزری با استفاده از شبیهسازی عددی و مشخصهیابی طیفی | ||
| نشریه مهندسی مکانیک امیرکبیر | ||
| دوره 56، شماره 9، 1403، صفحه 1275-1302 اصل مقاله (2.9 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22060/mej.2025.23511.7774 | ||
| نویسندگان | ||
| محمدجواد ترکمنی* 1؛ ابراهیم غلامی2؛ سعید باطبی2 | ||
| 1مرکز ملی علوم و فنون لیزر ایران، تهران، ایران | ||
| 2گروه فیزیک، دانشکده علوم، دانشگاه گیلان، رشت، ایران | ||
| چکیده | ||
| پایش برخط و کنترل دینامیک حوضچه مذاب، نقش کلیدی در تعیین کیفیت لایههای روکش شده در فرایندهای ساخت افزایشی لیزری ایفا میکند. این پژوهش رویکردی ترکیبی از شبیهسازی عددی با مدل گلداک و پایش لحظهای با طیفسنجی فروشکست القایی لیزری را در فرایند روکشکاری لیزری آلیاژ اینکونل 718 بر روی زیرلایه استیل 304 ارائه میدهد. مدلسازی دقیق دینامیک حرارتی حوضچه مذاب در 64 نمونه روکش انجام شده و ابعاد سطح مقطع روکش و درصد آمیختگی با اندازهگیریهای تجربی اعتبارسنجی شده است. جهت کاهش خطای مدل، از مشخصه یابی طیفی برای پایش لحظهای تغییرات حوضچه مذاب استفاده شد که اطلاعات دقیقی از دمای موضعی حوضچه مذاب و همچنین ترکیب عناصر آن را ارائه داد. دمای پلاسمای استخراجشده از خطوط کروم در پنجره طیفی 400 تا 500 نانومتر، بطور موثر تغییرات دمای حوضچه مذاب را بر اساس پارامترهای ورودی ردیابی کرده، درحالیکه نسبت شدت نیکل (طول موج 361/93 نانومتر) به آهن (طول موج 382/94 نانومتر) آمیختگی لایه روکش را کمیسازی نمود. این رویکرد، امکان کالیبراسیون پویای پارامترهای ورودی فرایند را فراهم کرده و کیفیت یکنواخت لایه روکش را بر اساس کنترل لحظهای تغییرات دمای حوضچه مذاب و درجه آمیختگی تضمین میکند. | ||
| کلیدواژهها | ||
| پایش برخط؛ ساخت افزایشی لیزری؛ روکشکاری لیزری؛ دینامیک حوضچه مذاب؛ طیفسنجی | ||
| عنوان مقاله [English] | ||
| In-Situ Monitoring of Melt Pool Dynamics in Laser Cladding using Numerical Simulation and Spectral Diagnostics | ||
| نویسندگان [English] | ||
| Mohammad Javad Torkamany1؛ Ebrahim Gholami2؛ Saeed Batebi2 | ||
| 1Iranian National Center for Laser Science and Technology | ||
| 2Department of Physics, University of Guilan | ||
| چکیده [English] | ||
| Online Monitoring and Control of melt pool dynamics play a crucial role in determining the quality of clad layers in laser additive manufacturing processes. This study presents a hybrid approach that combines numerical simulation using the Goldak model with real-time monitoring via Laser-Induced Breakdown Spectroscopy (LIBS) in the laser cladding process of Inconel 718 alloy on 304 stainless steel substrate. The precise modeling of the thermal dynamics of the melt pool was performed on 64 cladding samples, and the cross-sectional dimensions and dilution percentage were validated against experimental measurements. To minimize model error, spectral characterization was employed for real-time monitoring of melt pool variations, providing highly accurate data on local melt pool temperature and elemental composition. The plasma temperature extracted from chromium emission lines in the spectral window of 400 to 500 nm effectively tracked the melt pool temperature variations based on input parameters, while the intensity ratio of nickel (wavelength 361.93 nm) to iron (wavelength 382.94 nm) quantified the dilution of the clad layer. This approach enables dynamic calibration of process input parameters, ensuring uniform clad quality through real-time control of the melt pool. | ||
| کلیدواژهها [English] | ||
| Online Monitoring, Laser Additive Manufacturing, Laser Cladding, Melt Pool Dynamics, Laser-Induced Breakdown Spectroscopy | ||
| مراجع | ||
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