کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7215037 1469472 2017 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Anti-impact response of Kevlar sandwich structure with silly putty core
ترجمه فارسی عنوان
پاسخ ضد ضربه ساختار ساندویچ کوالان با هسته پلاستیکی احمقانه
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
چکیده انگلیسی
A soft sandwich structure consisting of two layer Kevlar face sheets and a silly putty (SP) core was fabricated. The storage modulus of SP, which was prepared by dispersing CaCO3 particles into polyborodimethylsiloxane, increased by two to three orders of magnitude with increasing of the shear frequency. The higher CaCO3 content resulted in better shear-hardening behavior, which further enhanced the anti-impact performance of the sandwich structure. When the impact velocity was below 110 m/s, all energy was dissipated by the sandwich structure and the maximum energy dissipation was 20.8 J, represented a 60% increment than the neat Kevlar. Importantly, under the same impact energy, the energy dissipation of the sandwich structure under ballistic impact was 63% higher than under low velocity impact, which must be due to the shear-hardening nature. The mechanism of the excellent protection performance was discussed. The sensitivity to loading rate and reliable energy dissipation of the soft sandwich structure widely broad its practical applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Science and Technology - Volume 153, 1 December 2017, Pages 168-177
نویسندگان
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