title: A Fiber-Coupled Self-Mixing Laser Diode for the Measurement of Young's Modulus.
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.
authors.affiliation: School of Electrical, Computer and Telecommunications Engineering, University of Wollongong, Northfields Ave, Wollongong NSW 2522, Australia. kl740@uowmail.edu.au.
authors.forename: Ke
authors.initials: K
authors.lastname: Lin
authors.affiliation: School of Electrical, Computer and Telecommunications Engineering, University of Wollongong, Northfields Ave, Wollongong NSW 2522, Australia. yanguang@uow.edu.au.
authors.forename: Yanguang
authors.initials: Y
authors.lastname: Yu
authors.affiliation: School of Electrical, Computer and Telecommunications Engineering, University of Wollongong, Northfields Ave, Wollongong NSW 2522, Australia. jiangtao@uow.edu.au.
authors.forename: Jiangtao
authors.initials: J
authors.lastname: Xi
authors.affiliation: School of Mechanical, Materials and Mechatronic Engineering, University of Wollongong, Wollongong NSW 2522, Australia. huijun@uow.edu.au.
authors.forename: Huijun
authors.initials: H
authors.lastname: Li
authors.affiliation: School of Electrical, Computer and Telecommunications Engineering, University of Wollongong, Northfields Ave, Wollongong NSW 2522, Australia. qguo@uow.edu.au.
authors.forename: Qinghua
authors.initials: Q
authors.lastname: Guo
authors.affiliation: School of Electrical, Computer and Telecommunications Engineering, University of Wollongong, Northfields Ave, Wollongong NSW 2522, Australia. jtong@uow.edu.au.
authors.forename: Jun
authors.initials: J
authors.lastname: Tong
authors.affiliation: School of Mechanical, Materials and Mechatronic Engineering, University of Wollongong, Wollongong NSW 2522, Australia. lihongsu@uow.edu.au.
authors.forename: Lihong
authors.initials: L
authors.lastname: Su
keywords: Young’s modulus; fiber-coupled; fundamental resonant frequency; self-mixing interferometry; self-mixing laser diode