Sensors 2016, 16(6), 928; doi:10.3390/s16060928
A Fiber-Coupled Self-Mixing Laser Diode for the Measurement of Young’s Modulus
1
School of Electrical, Computer and Telecommunications Engineering, University of Wollongong, Northfields Ave, Wollongong NSW 2522, Australia
2
School of Mechanical, Materials and Mechatronic Engineering, University of Wollongong, Wollongong NSW 2522, Australia
*
Author to whom correspondence should be addressed.
Academic Editor: Jose Miguel Lopez-Higuera
Received: 11 April 2016 / Revised: 30 May 2016 / Accepted: 10 June 2016 / Published: 22 June 2016
(This article belongs to the Special Issue Optical Fiber Sensors 2016)
Abstract
This paper presents the design of a fiber-coupled self-mixing laser diode (SMLD) for non-contact and non-destructive measurement of Young’s modulus. By the presented measuring system, the Young’s modulus of aluminum 6061 and brass are measured as 70.0 GPa and 116.7 GPa, respectively, showing a good agreement within the standards in the literature and yielding a much smaller deviation and a higher repeatability compared with traditional tensile testing. Its fiber-coupled characteristics make the system quite easy to be installed in many application cases. View Full-TextKeywords:
fiber-coupled; self-mixing laser diode; self-mixing interferometry; fundamental resonant frequency; Young’s modulus
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Lin, K.; Yu, Y.; Xi, J.; Li, H.; Guo, Q.; Tong, J.; Su, L. A Fiber-Coupled Self-Mixing Laser Diode for the Measurement of Young’s Modulus. Sensors 2016, 16, 928.
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