بررسی تجربی تأثیر پارامترهای لیزر در شکل‌دهی ورق‌های فوم حفره‌بستۀ آلومینیم با استفاده از لیزر

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشگاه تربیت مدرس

2 دانشگاه تربیت دبیر شهید رجایی

3 دانشگاه بین‌المللی امام‌خمینی

چکیده

در فرآیند شکل‌دهی با لیزر تشکیل گرادیان دمایی در راستای ضخامت ورق عامل ایجاد خم نهایی می‌باشد. ورق‌های فوم فلزی، به‌علت بروز شکست در حین تغییرشکل، توسط هیچ‌کدام از روش‌های مکانیکی قابل شکل‌دهی نمی‌باشد. در این مقاله، ورق‌های فوم حفره‌بستۀ آلومینیم تحت تابش لیزر قرار گرفته است. آزمایش‌ها با مقادیر متفاوت توان لیزر، سرعت پرتو و تعداد پاس‌های اسکن انجام گرفته است تا تأثیر هر کدام روی مقدار نهایی خم تعیین گردد. از طراحی آزمایش به‌شیوۀ رویۀ پاسخ و تحلیل واریانس نتایج به‌منظور تعیین تأثیر پارامترهای فرآیندی استفاده شده است. درانتها، رابطه‌ای برای پیش‌بینی مقدار زاویۀ خم در ورق فوم ارائه‌ شده است.

کلیدواژه‌ها

عنوان مقاله [English]

Experimental Investigation on Process Parameters Effects in Laser Forming of Closed-cell Aluminium Foam Sheets

نویسندگان [English]

  • Amir Hossein Roohi 1
  • Hassan Moslemi Naeini 1
  • Mohammad Hoseinpour Gollo 2
  • Mehdi Soltanpour 3
1 Tarbiat Modares University
2 Shahid Rajaee Teacher Training University
3 Imam Khomeini International University
چکیده [English]

In a laser forming process, the temperature gradient across the sheet thickness produces the final bending angle. Metallic foams cannot be formed by any mechanical processes due to occurrence of failure during deformation. In this article, closed-cell aluminium foams are irradiated by a laser beam. Experiments are carried out by varying laser power, scan velocity and the number of scan passes to specify their effect on the bending angle. Design of experiment with the response surface methodology and analysis of variance are utilized to analyze parameter effects. At last, an equation is derived for prediction of bending angle.

کلیدواژه‌ها [English]

  • Laser forming proces
  • Closed-cell aluminium foam
  • Design of Experiment

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