TY - JOUR
T1 - Application of silicon carbide fibers as a sensor for low-velocity impact detection and localization
AU - Kwon, Hyunseok
AU - Park, Yurim
AU - Shrestha, Pratik
AU - Kim, Chun Gon
PY - 2018
Y1 - 2018
N2 - In this study, silicon carbide fiber was proposed as a sensor for detection and localization of low-velocity impacts on composite structures. Semi-conductive silicon carbide fibers have excellent piezoresistivity and good mechanical properties, so their potential as a sensor for low-velocity impact detection and localization was investigated by attaching it on the surface of a composite panel. By measuring the resistance change of the silicon carbide fiber sensor due to low-velocity impacts on the composite material, impacts signals were obtained, and the resistance changes of the silicon carbide fiber sensor were acquired by conversion to voltage using a Wheatstone bridge circuit. The impact signals acquired using the silicon carbide fiber sensors were investigated to analyze the repeatability for impacts at the same location point and impact distinguishability at different points. Finally, impact localization based on a reference database using the silicon carbide fiber sensors attached to the composite panel was performed, and a total of 20 impacts were localized with an average error of 16.2 mm and a maximum error of 39.5 mm for a test section with planar dimensions of 200 mm × 200 mm.
AB - In this study, silicon carbide fiber was proposed as a sensor for detection and localization of low-velocity impacts on composite structures. Semi-conductive silicon carbide fibers have excellent piezoresistivity and good mechanical properties, so their potential as a sensor for low-velocity impact detection and localization was investigated by attaching it on the surface of a composite panel. By measuring the resistance change of the silicon carbide fiber sensor due to low-velocity impacts on the composite material, impacts signals were obtained, and the resistance changes of the silicon carbide fiber sensor were acquired by conversion to voltage using a Wheatstone bridge circuit. The impact signals acquired using the silicon carbide fiber sensors were investigated to analyze the repeatability for impacts at the same location point and impact distinguishability at different points. Finally, impact localization based on a reference database using the silicon carbide fiber sensors attached to the composite panel was performed, and a total of 20 impacts were localized with an average error of 16.2 mm and a maximum error of 39.5 mm for a test section with planar dimensions of 200 mm × 200 mm.
KW - fiber-type sensor
KW - impact localization
KW - Low-velocity impacts
KW - semi-conductive fiber sensor
KW - silicon carbide fiber sensor
UR - http://www.scopus.com/inward/record.url?scp=85059910952&partnerID=8YFLogxK
U2 - 10.1177/1475921718810398
DO - 10.1177/1475921718810398
M3 - Article
AN - SCOPUS:85059910952
SN - 1475-9217
VL - 18
SP - 372
EP - 1382
JO - Structural Health Monitoring
JF - Structural Health Monitoring
IS - 5-6
ER -