Temperature effect on all-inkjet-printed nanocomposite piezoresistive sensors for ultrasonics-based health monitoring

Pengyu Zhou, Wuxiong Cao, Yaozhong Liao, Kai Wang, Xiongbin Yang, Jianwei Yang, Yiyin Su, Lei Xu, Li min Zhou, Zhong Zhang, Zhongqing Su

Research output: Journal article publicationJournal articleAcademic researchpeer-review

2 Citations (Scopus)

Abstract

The sensing performance of nanocomposite piezoresistive sensors in acquiring broadband acousto-ultrasonic wave signals is scrutinized in an extensive regime of temperature variation from −60 to 150 °C, which spans the thermal extremes undergone by most aircraft and spacecraft. Ultralight and flexible, the sensors are all-inkjet-printed using a drop-on-demand additive manufacturing approach, and then optimized sensitive to the ultraweak disturbance induced by acousto-ultrasonic waves in virtue of quantum tunneling effect. Under high-intensity thermal cycles from −60 to 150 °C, the sensors have proven stability and accuracy in responding to signals in a broad band from static to half a megahertz. Compared with conventional broadband sensors such as piezoelectric wafers, this genre of inkjet-printed nanocomposite sensors avoids the influence of increased dielectric permittivity during the measurement of high-frequency signals at elevated temperatures. Use of the sensors for characterizing undersized cracks in a typical aerospace structural component under acute temperature variation has spotlighted the alluring application potentials of the all-inkjet-printed nanocomposite sensors in implementing in-situ structural health monitoring for key aircraft and spacecraft components.

Original languageEnglish
Article number108273
JournalComposites Science and Technology
Volume197
DOIs
Publication statusPublished - 8 Sep 2020

Keywords

  • A. Nano composites
  • B. Thermal properties
  • D. Ultrasonic testing
  • E. Additive manufacturing
  • Structural health monitoring

ASJC Scopus subject areas

  • Ceramics and Composites
  • Engineering(all)

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