Fiberoptic metal detector capable of profile detection

Wei-Shu Hua; Joshua R. Hooks; Nicholas A. Erwin; Wen-Jong Wu; Wei-Chih Wang

doi:10.1117/12.880661

31 March 2011 Fiberoptic metal detector capable of profile detection

Wei-Shu Hua, Joshua R. Hooks, Nicholas A. Erwin, Wen-Jong Wu, Wei-Chih Wang

Proceedings Volume 7984, Health Monitoring of Structural and Biological Systems 2011; 798429 (2011) https://doi.org/10.1117/12.880661
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2011, San Diego, California, United States

Abstract

The purpose of this paper is to develop a novel ferromagnetic polymeric metal detector system by using a fiber-optic Mach-Zehnder interferometer with a newly developed ferromagnetic polymer as the magnetostrictive sensing device. This ferromagnetic polymeric metal detector system is simple to fabricate, small in size, and resistant to RF interference (which is common in typical electromagnetic type metal detectors). Metal detection is made possible by disrupting the magnetic flux density present on the magnetostrictive sensor. This paper discusses the magnetic properties of the ferromagnetic polymers. In addition, the preliminary results of successful sensing of different geometrical metal shapes will be discussed.

Citation Download Citation

Wei-Shu Hua, Joshua R. Hooks, Nicholas A. Erwin, Wen-Jong Wu, and Wei-Chih Wang "Fiberoptic metal detector capable of profile detection", Proc. SPIE 7984, Health Monitoring of Structural and Biological Systems 2011, 798429 (31 March 2011); https://doi.org/10.1117/12.880661

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