From Event: SPIE Smart Structures + Nondestructive Evaluation, 2023
The objective of this research is to demonstrate the versatility of a dip coating process for the efficient integration of piezoelectric barium titanate (BaTiO3) microparticles on a wide variety of fibers to design passive self-sensing composites. The microparticles were deposited on glass, aramid, and basalt fiber weaves through the proposed dip coating technique. A computational framework is established to predict the deposition thickness on the fiber surfaces from the given microparticle concentration, size, coating velocity, and coating fluid viscosity. The deposition quality assessment was performed through scanning electron microscope imaging and subsequent image analysis. BaTiO3-coated fibers were directly used in composite preparation. After fabrication, the BaTiO3-enhanced composites were subjected to high-voltage poling. Finally, their passive self-sensing properties were characterized through experimental studies. The results show the adaptability of the proposed coating process to integrate BaTiO3 microparticles within different types of fiber-reinforced composites enabling passive self-sensing to attain subsurface damage characterization.
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Sumit Gupta, Arijit Mahapatra, Polyxeni Angelopoulou, Logan Kearney, Zeyang Yu, Amit K. Naskar, and Christopher Bowland, "A versatile fiber coating process for efficient fabrication of multifunctional composites," Proc. SPIE 12487, Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XVII, 124870I (Presented at SPIE Smart Structures + Nondestructive Evaluation: March 14, 2023; Published: 18 April 2023); https://doi.org/10.1117/12.2658606.