کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
817828 | 1469427 | 2014 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
New approaches towards the investigation on defects and failure mechanisms of insulating composites used in high voltage applications
ترجمه فارسی عنوان
رویکردهای نوین در جهت بررسی نقص ها و سازوکارهای شکست عایق های کامپوزیتی مورد استفاده در برنامه های کاربردی ولتاژ بالا
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی (عمومی)
چکیده انگلیسی
Stator insulations are critical to the reliability of high voltage rotating machines. Currently, state-of-the-art inspection systems mainly focus on electrical properties such as partial discharges to assess the performance of these composite materials. In the present work, non-destructive testing techniques and thermomechanical characterization methods are employed to characterize typical failures and defects of winding insulations and the resistance against delamination. X-ray computed (micro)tomography and ultrasonic measurements are performed to visualize defects in stator bar insulations. Both sample preparation as well as measurement set-up have been optimized to inspect defects in whole stator bars by means of X-ray CT. Additionally, the delamination resistance of insulation materials manufactured by resin rich and vacuum pressure technology are determined by TMA and DMA. The results give evidence that the evaluated inspection techniques provide a useful tool for the electrical industry regarding quality control, development of new materials or process optimization of stator windings.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Part B: Engineering - Volume 58, March 2014, Pages 83-90
Journal: Composites Part B: Engineering - Volume 58, March 2014, Pages 83-90
نویسندگان
Dietmar Lenko, Sandra Schlögl, Sabine Bichler, Gerhard Lemesch, Franz Ramsauer, Werner Ladstätter, Jördis Rosc, Wolfgang Kern,