کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1466945 | 990081 | 2010 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Ferromagnetic microwires enabled polymer composites for sensing applications Ferromagnetic microwires enabled polymer composites for sensing applications](/preview/png/1466945.png)
In the present work, sensing functionalities are introduced into structural composites via embedded magnetic microwires. A systematic study on the structure and functionalities of microwires and their composites is performed. The single-wire composite shows a significant giant magnetoimpedance (GMI) effect of up to 320% in a frequency range of 1–100 MHz due to stress enhanced transverse magneto-anisotropy. With increasing quantities of embedded wires from 1 to 3, the maximum GMI ratio is enhanced significantly by more than 35%, making the resultant composite favourable for field sensing applications. The microwire-composite also shows superior stress-sensing resolution as high as 134.5 kHz/microstrain, which is about 26 times higher than the recently proposed SRR-based sensor. As evidenced by the structural examination and tensile tests, the extremely small volume fraction of microwires (∼0.01 vol.%) allows the wire-composites to retain their mechanical integrity and performance.
Journal: Composites Part A: Applied Science and Manufacturing - Volume 41, Issue 12, December 2010, Pages 1823–1828