Composite Structures
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#2Carlos GarciaH-Index: 18
Last. Alejandro UreñaH-Index: 33
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Abstract Crack-sensing capabilities of a carbon nanotube (CNT) doped adhesive film have been analysed from coupon level to a composite repaired panel. Mechanical performance is not negatively affected by the addition of CNTs, due to their good distribution inside the adhesive. Moreover, the electrical resistance increases with displacement in both Single Lap Shear (SLS) and Mode-I joints, due to the combined effect of adhesive deformation and crack propagation . More specifically, Mode-I joints ...
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#1Yuan-Yuan ZhangH-Index: 2
#2Zheng SunH-Index: 3
Last. Shao-Yun FuH-Index: 76
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Abstract Tribological properties of short-carbon-fiber reinforced polyetherimide (SCF/PEI) composites have already been reported experimentally. However, detailed wear mechanisms and simulation work of these composites during a wear process with accompanied temperature changes have not been documented. In the present work, the evolution of wear behaviors of SCF/PEI composite within a single sliding wear process is systematically investigated by unlubricated wear tests and finite element method (...
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Abstract This study presents a methodology for detecting delaminations in carbon fiber reinforced polymer (CFRP)-jacketed concrete structures by infrared thermography. Four specimens with artificial delaminations were evaluated through passive experiments under different weather conditions including winter, summer, sunny, and rainy conditions. The test parameters considered for the artificial delaminations in the specimens included size, depth, surface cover mortar, and the water content in the ...
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#2Baozhong Sun (Donghua University)H-Index: 29
Last. Bohong Gu
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Abstract Revealing electric potential distributions in carbon fiber reinforced polymer composites (CFRPs) is important in structural health monitoring (SHM). Here we report effects of current injection modes, probing depth and preform structure on the electric potential distributions in carbon fiber / epoxy plain-woven (PW) laminates. We have conducted a series of electric distribution measurements and established a linear anisotropic conductivity model to show the electric potential distributio...
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Abstract This study is dedicated to the development of a generalized confinement model applicable to circular concrete columns confined by FRP full and partial confinement arrangements. To simulate the axial stress versus strain curve, a new strength model is proposed addressing the relation of axial stress and confinement pressure during axial loading, whose calibration was based on an extensive set of test results. By combining theoretical basis and experimental observations, the influence of ...
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#1Peifei Xu (UCLA: University of California, Los Angeles)
#1Peifei XuH-Index: 6
Last. Ajit Mal
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Abstract The ultimate damage patterns of bolted composite joints would change from bearing damage to shear damage due to different geometric parameters. However, it is still a challenging task to evaluate real-time damage progressive of hybrid (bolted/bonded) FML joints consisting of complex components in detail. Here, acoustic emission (AE) combined with a digital image correlation system (DIC), optical microscope and C-Scan technique is applied to describe the mechanical responses of hybrid FM...
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#2Amirtham RajagopalH-Index: 11
Last. J. N. Reddy (A&M: Texas A&M University)H-Index: 122
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Abstract A new phase field model considering the interfacial damage for different configurations of a fiber reinforced composite is proposed and formulated. Crack and non local interface are considered to be diffused. A coupled traction separation law based on a potential function is adopted to represent the behavior of the interface. Anisotropy is introduced into the elastic equilibrium by considering the distinct contributions of fiber and matrix in different modes. The present model captures ...
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#1A. AmmarH-Index: 2
#2W. LeclercH-Index: 6
Last. N. Haddar
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#1Ben-ben Li (Nanjing Tech University)H-Index: 5
Last. Lee S. CunninghamH-Index: 10
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Abstract The constitutive relationship of concrete under passive confinement of fibre reinforced polymer (FRP) is one of the fundamental requirements for mechanical analysis of FRP-confined concrete members. The existing tri-axial constitutive models are commonly established based on actively confined concrete or uniform passively confined concrete. True tri-axial experiments and corresponding constitutive models for non-uniform passively confined concrete are rare. In this study, based on the p...
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Abstract This study investigates the behaviour of real short thin-walled laminated angle columns subjected to uniform shortening. Numerical analyses and experiments were conducted over the full range of loading until the initiation of structural damage. The experiments were performed on a universal testing machine with the use of the Aramis digital image correlation system for displacement/strain measurement. The first signs of structural damage were detected by acoustic emission method . The nu...
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