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A Strain Distribution Sensing System for Bone-Implant Interfaces Based on Digital Speckle Pattern Interferometry

1
College of Information Science and Technology, Donghua University, Shanghai 201620, China
2
Department of Applied Physics, Donghua University, Shanghai 201620, China
*
Author to whom correspondence should be addressed.
Sensors 2019, 19(2), 365; https://doi.org/10.3390/s19020365
Received: 12 December 2018 / Revised: 13 January 2019 / Accepted: 16 January 2019 / Published: 17 January 2019
(This article belongs to the Special Issue Optical Bio Sensing)
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PDF [7354 KB, uploaded 17 January 2019]
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Abstract

This paper aims to provide an effective measurement method for the distribution of deformations and strains focusing on the response to external loading of bone-implant interfaces. To achieve this target, a novel speckle interference imaging method is proposed by introducing phosphate buffer saline medium, in which the samples were completely placed into a phosphate buffer saline solution medium to stable the water molecules. The stability of interferometry imaging is analyzed by using the concepts of co-occurrence matrix and moment of inertia. A series of experiments to measure load-driven deformation and strain in the bone-implant interface was carried out, and the experiments results were analyzed and discussed. It shows that the proposed method is feasible and effective for the no-contact strain measurements of biomaterials in a physiological condition. The proposed strain distribution sensing system will contribute to evaluating computational simulations and improving selection of implant designs and materials. View Full-Text
Keywords: strain distribution detection; speckle interference imaging; phosphate buffer saline solution; digital speckle pattern interferometry; bone-implant interface strain distribution detection; speckle interference imaging; phosphate buffer saline solution; digital speckle pattern interferometry; bone-implant interface
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Zhong, P.; Li, Z.; Yang, H.; Tang, X.; He, G. A Strain Distribution Sensing System for Bone-Implant Interfaces Based on Digital Speckle Pattern Interferometry. Sensors 2019, 19, 365.

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