کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7215162 | 1469502 | 2016 | 23 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
High-performance strain sensors based on functionalized graphene nanoplates for damage monitoring
ترجمه فارسی عنوان
سنسورهای کششی با کارایی بالا بر اساس نانوپانل های گرافن کاربردی برای نظارت بر خسارت
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی (عمومی)
چکیده انگلیسی
A high-performance piezoresistive strain sensor can be used to monitor the deformation and damage in the structural composites. We developed the sensors with high sensitivity by structuring a 3D graphene network into an epoxy matrix. One-pot synthesis of amino-functionalized graphene nanoplates (f-GnP) was realized from graphite oxide and polyether amine, so that the dispersion of graphene in epoxy was well improved. The f-GnP/epoxy composite with lower percolation threshold, i.e. â¼1.31 vol%, exhibited relatively high gauge factor of â¼45 and Young's modulus of â¼2.2Â GPa. Importantly, the studied sensor with f-GnP network structure could help to detect the initiation and accumulation of damage in the structure materials under tensile loading. The normalized electrical resistance change (ÎR/Ro) of the composite sensor initially almost increased linearly, then shown nonlinear drift and irregular ladder-shaped growth with the appearance of irreversible damage and deformation. These results suggest that the graphene/epoxy piezoresistive sensors show promising applications for the damage monitoring of structural materials in the field of aerospace.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Science and Technology - Volume 123, 8 February 2016, Pages 32-38
Journal: Composites Science and Technology - Volume 123, 8 February 2016, Pages 32-38
نویسندگان
Jun-Wei Zha, Bo Zhang, Robert K.Y. Li, Zhi-Min Dang,