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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Real-time self-monitoring properties in 3D printed continuous carbon fiber reinforced thin-walled composite structures under large deformation
AU - Huang, Y.
AU - Wang, D.
AU - Wen, W.
AU - Zhu, W.
AU - Li, J.
AU - Cheng, P.
AU - Peng, Y.
AU - Yu, T.
AU - Wang, K.
AU - Ahzi, S.
PY - 2025/6/3
Y1 - 2025/6/3
N2 - Deformation monitoring is a crucial approach to ensuring safety and reliability of thin-walled structures. In this study, an electrical-resistance-based deformation monitoring method was utilized for real-time structural health monitoring of 3D printed continuous carbon fiber reinforced thin-walled composite structures. The correlation between deformation and electrical resistance changes was investigated in quasi-static lateral and axial compression for the composite structures with three different layer heights. Results showed that the mechanical–electrical behaviors during lateral and axial compression processes manifested distinct forms. A bilinear relationship between relative resistance change and compression displacement during lateral compression was obtained. Furthermore, the composite structures with lower layer heights demonstrated a higher linear correlation coefficient. Under axial compression, the relative resistance change showed a fluctuating fall/rise pattern. This pattern was associated with intricate damage morphology observed in the composite structures, such as fiber-to-fiber contact, fiber breakage, and fiber pull-out. In addition, the relative resistance change demonstrated a falling-rising pattern in the composite structures with a layer height of 0.3 mm, while it exhibited a falling-rising-falling pattern with other layer heights. The established correlation between the relative resistance change and deformation could facilitate real-time self-monitoring of deformation and failure states in thin-walled structures.
AB - Deformation monitoring is a crucial approach to ensuring safety and reliability of thin-walled structures. In this study, an electrical-resistance-based deformation monitoring method was utilized for real-time structural health monitoring of 3D printed continuous carbon fiber reinforced thin-walled composite structures. The correlation between deformation and electrical resistance changes was investigated in quasi-static lateral and axial compression for the composite structures with three different layer heights. Results showed that the mechanical–electrical behaviors during lateral and axial compression processes manifested distinct forms. A bilinear relationship between relative resistance change and compression displacement during lateral compression was obtained. Furthermore, the composite structures with lower layer heights demonstrated a higher linear correlation coefficient. Under axial compression, the relative resistance change showed a fluctuating fall/rise pattern. This pattern was associated with intricate damage morphology observed in the composite structures, such as fiber-to-fiber contact, fiber breakage, and fiber pull-out. In addition, the relative resistance change demonstrated a falling-rising pattern in the composite structures with a layer height of 0.3 mm, while it exhibited a falling-rising-falling pattern with other layer heights. The established correlation between the relative resistance change and deformation could facilitate real-time self-monitoring of deformation and failure states in thin-walled structures.
U2 - 10.1016/j.compstruct.2025.119341
DO - 10.1016/j.compstruct.2025.119341
M3 - Journal article
VL - 369
JO - Composite Structures
JF - Composite Structures
SN - 0263-8223
M1 - 119341
ER -