کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
11003909 1463706 2018 31 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of weathering-induced degradation on the fracture and fatigue characteristics of injection-molded polypropylene/talc composites
ترجمه فارسی عنوان
اثر تخریب ناشی از هوازدگی بر خصوصیات شکست و خستگی کامپوزیت های پلی پروپیلن / تالک تزریقی
کلمات کلیدی
آب و هوا، کار ضروری شکستگی، طول عمر خستگی، پلی پروپیلن، تخریب پلیمر، مدل پیش بینی طول عمر،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
چکیده انگلیسی
Weathering-induced degradation causes a premature failure of polymeric materials in outdoor applications. In this study, the polypropylene and talc composites were degraded by accelerated and outdoor weathering. By comparing the degradation degree through the Fourier Transform-Infrared (FT-IR) analysis, the accelerated weathering factor was constructed. To investigate the effect of weathering on the short and long-term mechanical properties, the tensile, essential work of fracture, and fatigue tests were performed for pre-degraded specimens under accelerated weathering. The results demonstrated that the weathering-induced degradation slightly increased the elastic modulus and tensile strength; whereas such degradation dramatically reduced the strain at the break. The fracture characteristics in plane stress conditions and stress-lifetime curves with pre-weathering were also investigated. Finally, a new model predicting the lifetime under the simultaneous application of fatigue loading and weathering-induced degradation was developed by modifying the well-known Miner's rule.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Fatigue - Volume 117, December 2018, Pages 111-120
نویسندگان
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