Enhanced flexural wave sensing by adaptive gradient-index metamaterials

• DOI: 10.1038/srep35048
• Publication Date: 2016-10-17T10:59:46Z
• Authors: Y. Y. Chen; R. Zhu; M. V. Barnhart; G. L. Huang
• Keywords: Instrumentation; Structural Health Monitoring; SIGNAL (programming language)

Abstract Increasing sensitivity and signal to noise ratios of conventional wave sensors is an interesting topic in structural health monitoring, medical imaging, aerospace nuclear instrumentation. Here, we report the concept a gradient piezoelectric self-sensing system by integrating shunting circuitry into sensors. By tuning circuit elements properly, both quality quantity flexural measurement data can be significantly increased for new adaptive sensing applications. Through analytical, numerical experimental studies, demonstrate that metamaterial-based (MBSS) with bending stiffness designed connecting negative capacitance circuits array patches (sensors). Furthermore, proposed achieve more than two orders magnitude amplification signals overcome detection limit. This research encompasses fundamental advancements MBSS improved performance functionalities, will yield significant advances range