کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7176886 1466738 2016 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Assessing a stepped sonotrode in ultrasonic molding technology
ترجمه فارسی عنوان
ارزیابی یک سوناتروده مرحله ای در تکنولوژی قالب گیری التراسونیک
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی صنعتی و تولید
چکیده انگلیسی
Ultrasonic molding is a new technology used to process polymeric micro-molded parts. An ultrasonic horn, or sonotrode, transmits ultrasonic energy which melts the material and pushes it into a mold cavity to configure a shape. Sonotrode design - and any transformations to the dimensions or shape caused by tool wear - strongly affects efficient operation. The sonotrode may go beyond the generator operating frequency range, thus affecting process performance. This paper assesses two issues involving a stepped sonotrode employed in ultrasonic molding: (i) a design procedure that can predict the sonotode's behavior during the molding process and (ii) a method for creating a sonotrode operating frequencies map which will facilitate the design of new sonotrodes and be able to determine the extent to which they can be re-machined after a certain period of wear. Numerical simulations carried out by finite element methods were compared to experimental measurements performed to capture the sonotrode frequency vibrational modes. A frequency map provides the dimensional range within which the sonotrode can be re-machined in order to eliminate tool wear and allow the sonotrode to work properly again, thus extending the lifecycle of the tool.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Materials Processing Technology - Volume 229, March 2016, Pages 687-696
نویسندگان
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