کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5207781 | 1382368 | 2007 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Incubation time to crazing in stressed poly(methyl methacrylate)
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Crazing is usually a precursor of the brittle fracture of glassy polymers. In this paper, an optical technique is presented to quantify the crazing dominated creep damage that occurs on a stressed transparent glassy polymeric sheet of polymethyl methacrylate (PMMA). The specimens, with various sections, are loaded for a predefined period of time under a constant load at room temperature, and the areal craze densities are obtained as the measurement of creep damage by using an optical microscope. The experimental results show that there is a time lag between load application and the occurrence of the visible crazes, which indicates that craze initiation is a time-dependent phenomenon. Moreover, the time lag decreases with increase in applied stress. Such incubation time to crazing is experimentally obtained and modeled in the present work.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer Testing - Volume 26, Issue 3, May 2007, Pages 413-418
Journal: Polymer Testing - Volume 26, Issue 3, May 2007, Pages 413-418
نویسندگان
Wenbo Luo, Wenxian Liu,