کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1583399 | 1514892 | 2007 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Damage in fiber reinforced and unreinforced AZ91 studied by internal friction
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The influence of load cycling on the amplitude dependent damping and possible causes of fatigue in unreinforced and Saffil fibre reinforced magnesium alloy AZ91 was investigated. The unreinforced AZ91 alloy was investigated in the as cast and in the homogenized state. For an increasing number of cycles N, the amplitude dependent component of the logarithmic decrement decreases until a critical N (=NC). For higher cycle numbers (NÂ >Â NC), a maximum in the strain amplitude dependent damping curves increases and shifts to lower strain amplitudes with increasing N, which is attributed to the growth of cracks. These findings are consistent with the decrease of the resonant frequency during crack growth.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 462, Issues 1â2, 25 July 2007, Pages 230-233
Journal: Materials Science and Engineering: A - Volume 462, Issues 1â2, 25 July 2007, Pages 230-233
نویسندگان
Agnieszka Mielczarek, Werner Riehemann, Zuzanka Trojanová, Pavel LukáÄ,