Magnetic activation of embedded sensory particles in active tagging interrogation of adhesive bonding

Fanping P. Sun; Chen Liang; Craig A. Rogers; L. Vick

doi:10.1117/12.147997

12 July 1993 Magnetic activation of embedded sensory particles in active tagging interrogation of adhesive bonding

Fanping P. Sun, Chen Liang, Craig A. Rogers, L. Vick

Proceedings Volume 1918, Smart Structures and Materials 1993: Smart Sensing, Processing, and Instrumentation; (1993) https://doi.org/10.1117/12.147997
Event: 1993 North American Conference on Smart Structures and Materials, 1993, Albuquerque, NM, United States

Abstract

This paper presents an experimental technique of magnetically exciting embedded ferromagnetic particles in epoxy to facilitate active inspection and interrogation of bond integrity. The proposed concepts involve biasing an alternating magnetic field and optimizing the activating location to maximize and linearize the exciting force on the particles. The methods are analytically and experimentally proven to be effective in amplifying the force and reducing the harmonic distortion resulting from the nonlinearity of the system. The effects of material properties and the geometry of the embedded particles on the activation force are also extensively studied. The particle's geometry is found to affect the activation significantly. The active tagging technique is thus pushed one more step forward on the way to practical application.

Citation Download Citation

Fanping P. Sun, Chen Liang, Craig A. Rogers, and L. Vick "Magnetic activation of embedded sensory particles in active tagging interrogation of adhesive bonding", Proc. SPIE 1918, Smart Structures and Materials 1993: Smart Sensing, Processing, and Instrumentation, (12 July 1993); https://doi.org/10.1117/12.147997

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