Multi-component force measurement using embedded fiber Bragg grating

• Main Authors: Bhalla, S., Suresh, Rupali, Tjin, Swee Chuan
• Other Authors: School of Electrical and Electronic Engineering
• Format: Article
• Language: English
• Published: 2009
• Subjects: DRNTU::Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics
• Online Access: https://hdl.handle.net/10356/91265; http://hdl.handle.net/10220/4372; http://sfxna09.hosted.exlibrisgroup.com:3410/ntu/sfxlcl3?sid=metalib:ELSEVIER_SCOPUS&id=doi:10.1016/j.optlastec.2008.08.004&genre=&isbn=&issn=0030-3992&date=2008&volume=&issue=&spage=&epage=&aulast=Suresh&aufirst=%20R&auinit=&title=Optics%20and%20Laser%20Technology&atitle=Multi%2Dcomponent%20force%20measurement%20using%20embedded%20fiber%20Bragg%20grating
• Institution: Nanyang Technological University

The development of new fiber Bragg grating (FBG)-based multi-component force sensors is described. A two-component and a three-component force sensor have been fabricated and tested. The two-component force sensor measures the normal and the longitudinal shear component of the force. The three-component force sensor measures the normal, the longitudinal shear and the transverse shear component, and thus provides the magnitude as well as the direction of the force in the three-dimensional space. In the two-component sensor, one FBG is embedded rectilinearly and another non-rectilinearly within carbon composite layer. In the three-component force sensor, one FBG is embedded rectilinearly and two mutually perpendicular FBGs non-rectilinearly within the carbon composite layer. This paper presents the basic sensor structure and the proof-of-concept experimental demonstration of the two sensors. Force measurement within the range 0–15 N has been successfully conducted within 10% deviation.