Textile-based piezoelectric nanogenerators (PENGs) for structural health monitoring (SHM)

This chapter explores the potential uses of textile-based piezoelectric nanogenerators (PENGs) in the field of structural health monitoring (SHM). PENGs harness the piezoelectric effect to convert mechanical stress into electrical charges, allowing for the integration of sensing capabilities by textile-based structures. This chapter looks into the fundamental principles underlying PENGs, highlighting the various piezoelectric materials that can be employed in textile applications, and their suitability for SHM purposes. Furthermore, this chapter discusses the challenges associated with the optimization of PENG design and material selection to enhance sensing performance and durability. Key topics covered include impedance sensing based on PENG sensors, the utilization of guide wave ultrasonic techniques, and the potential of PENGs in real-time monitoring of structural deformations and damages. By addressing these aspects, this chapter offers a comprehensive overview of the potential applications of PENGs in SHM and outlines the challenges that must be overcome for their successful implementation.