کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7171782 | 1463748 | 2016 | 17 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Cyclic deformation and fatigue behavior of polyether ether ketone (PEEK)
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی مکانیک
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
In this study, the fatigue behavior of a semi-crystalline thermoplastic polyether ether ketone (PEEK) is investigated. A series of tests at ambient temperature, including uniaxial monotonic (tension and compression) at different strain rates and uniaxial fully-reversed strain-controlled cyclic tests at strain amplitudes ranging from 0.02Â mm/mm to 0.04Â mm/mm at various frequencies, were conducted. The frequency influence on the strain-controlled fatigue lives of unfilled PEEK specimens was found to be highly dependent on the strain level. A minimal frequency effect was observed at a lower strain amplitude of 0.02Â mm/mm, whereas increasing the test frequency at higher strain amplitudes resulted in longer fatigue lives. Additionally, load-controlled cyclic tests that utilized applied loads corresponding to stress responses obtained from the strain-controlled fatigue tests were performed. The cyclic behavior under the two control modes were compared and discussed. Three types of fatigue models, including a strain-based (Coffin-Manson) model, a strain-stress-based (Smith-Watson-Topper) model, and an energy-based model, were employed to correlate the data in this study. Among the three fatigue models, the energy approach was found to better correlate the PEEK experimental data at various frequencies.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Fatigue - Volume 82, Part 3, January 2016, Pages 411-427
Journal: International Journal of Fatigue - Volume 82, Part 3, January 2016, Pages 411-427
نویسندگان
Rakish Shrestha, Jutima Simsiriwong, Nima Shamsaei, Robert D. Moser,