TY - JOUR
T1 - Flat Inkjet-Printed Copper Induction Coils for Magnetostrictive Structural Health Monitoring
T2 - A Comparison with Bulk Air Coils and an anisotropic magnetoresistive sensor (AMR) Sensor
AU - Gullapalli, Anirudh
AU - Beedasy, Vimanyu
AU - Vincent, Jamin Daniel Selvakumar
AU - Leong, Zhaoyuan
AU - Smith, Patrick
AU - Morley, Nicola
N1 - Funding Information:
The authors would like to acknowledge Ms. Iliyasmin Hazha for her help with sample fabrication. The authors would also like to thank the University of Sheffield Department of Mechanical Engineering for their support.
Publisher Copyright:
© 2021 The Authors. Advanced Engineering Materials published by Wiley-VCH GmbH
PY - 2021/9
Y1 - 2021/9
N2 - Structural health monitoring (SHM) represents the next generation of carbon fiber-reinforced composite nondestructive testing. One challenge facing the application of magnetostrictive SHM is the lightweighting and ease of installation of actuators and sensors. Inkjet printing (IJP) technology is well suited to produce miniaturized electronic induction sensors that can be paired with magnetostrictive actuators to detect strain. These sensors have several advantages: their thicknesses can be minimized, the surface area can be maximized to increase sensitivity, and complex multifilar coil configurations can be fabricated. A parametric study of the efficacy of IJP induction coils with different parameters (number of coils, monofilar/bifilar, size) tested on a number of actuator-functionalized composite coupons (FeSiB ribbon and impregnated epoxy sensors) is conducted. The samples are characterized by measuring their inductance response through induced strains. Increased sensitivity and accuracy of the 10-turn monofilar IJP sensor are shown with respect to 1) 70-turn hand-wound coils, 2) a three-axis AMR sensor, and 3) other IJP actuators with <10 turns. This is attributed to increased contact area to the composite surface and the requirement of minimum sensitivity (i.e., the number of turns and surface area) for strain detection.
AB - Structural health monitoring (SHM) represents the next generation of carbon fiber-reinforced composite nondestructive testing. One challenge facing the application of magnetostrictive SHM is the lightweighting and ease of installation of actuators and sensors. Inkjet printing (IJP) technology is well suited to produce miniaturized electronic induction sensors that can be paired with magnetostrictive actuators to detect strain. These sensors have several advantages: their thicknesses can be minimized, the surface area can be maximized to increase sensitivity, and complex multifilar coil configurations can be fabricated. A parametric study of the efficacy of IJP induction coils with different parameters (number of coils, monofilar/bifilar, size) tested on a number of actuator-functionalized composite coupons (FeSiB ribbon and impregnated epoxy sensors) is conducted. The samples are characterized by measuring their inductance response through induced strains. Increased sensitivity and accuracy of the 10-turn monofilar IJP sensor are shown with respect to 1) 70-turn hand-wound coils, 2) a three-axis AMR sensor, and 3) other IJP actuators with <10 turns. This is attributed to increased contact area to the composite surface and the requirement of minimum sensitivity (i.e., the number of turns and surface area) for strain detection.
KW - inkjet printing
KW - magnetostrictive sensors
KW - printed electronics
KW - strain sensors
KW - structural health monitoring
UR - http://www.scopus.com/inward/record.url?scp=85109153759&partnerID=8YFLogxK
U2 - 10.1002/adem.202100313
DO - 10.1002/adem.202100313
M3 - Article
AN - SCOPUS:85109153759
SN - 1438-1656
VL - 23
JO - Advanced engineering materials
JF - Advanced engineering materials
IS - 9
M1 - 2100313
ER -