کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7166988 | 1462933 | 2018 | 29 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Slow crack growth in a cordierite-based glass-ceramic missile radome due to stress corrosion
ترجمه فارسی عنوان
رشد ناگهانی ترک در یک رادوم موشک شیشه ای سرامیک، به دلیل خوردگی تنش، بر روی کوردیریت قرار دارد
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
تجزیه و تحلیل شکست سرامیک شیشه ای، فراکتوگرافی، ترک خوردگی با محیط زیست، تجزیه و تحلیل تنش،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی صنعتی و تولید
چکیده انگلیسی
A broken missile radome made of cordierite-based glass-ceramic was analyzed to identify the root cause and the mechanism of the fracture. In the fractographic analysis, the calculated critical flaw size, 144â¯Î¼m, was larger than the actual flaw size at the fracture origin, 65â¯Î¼m. Numerous microcracks were also found throughout the radome. In the physicochemical analysis, silanol (Si-OH) groups were detected at all the investigated sites on the fracture surface. The stress analysis verified that the tensile stress, driving the crack growth, is generated at the inner layer of the radome during flight. All these results strongly suggest that the failure of the radome was attributable to slow crack growth, the key mechanism of which was stress corrosion. It is highly probable that the widely distributed microcracks helped water to permeate the radome, thereby providing conditions for stress corrosion. This study demonstrates that the combined and synergistic interaction of mechanical stress and corrosion reactions iteratively occurred inside the radome through repeated flights and prolonged exposure to atmospheric moisture, consequently resulting in the radome failure.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Failure Analysis - Volume 93, November 2018, Pages 76-86
Journal: Engineering Failure Analysis - Volume 93, November 2018, Pages 76-86
نویسندگان
Changmin Lee, Ik-Sik Kim, Bokwon Lee,