Carbon fibre sensor meshes: Simulation and experiment

Matzies, Th.; Christner, Christian; Horoschenkoff, Alexander; Rapp, Helmut

doi:10.1016/j.commatsci.2012.05.070

Cited by 7 publications

(9 citation statements)

References 4 publications

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“…Assuming a linear displacement function the displacement u(x, y) and v(x, y) within the element can be calculated in accordance to Equation (8) and Equation (9).…”

Section: Carbon Fibre Sensor Meshesmentioning

confidence: 99%

“…In addition to the experiment a finite element analysis (FEA) was performed. In [9] the results of this experiment and of the corresponding finite element simulations are presented in detail 5 . Figure 10 shows the PMMA plate and the applied CFS mesh.…”

Section: Carbon Fibre Sensor Meshesmentioning

confidence: 99%

“…Carbon fibre sensor mesh applied on a 1 m x 1 m PMMA plate. Each sensor has a length of 300mm [9]. Figure 11 shows the determined strain ε x for each element of the mesh.…”

mentioning

confidence: 99%

“…A quadratic displacement approach for a 3-node triangle is also presented and verified in[9]. However, the quadratic displacement approach of a 3-node triangle requires additional strain gauges at the nodes to determine the 12 unknown coefficients of the shape function.…”

mentioning

confidence: 99%

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Carbon Fibre Sensor: Theory and Application

Horoschenkoff¹,

Christner²

2012

Composites and Their Applications

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“…Assuming a linear displacement function the displacement u(x, y) and v(x, y) within the element can be calculated in accordance to Equation (8) and Equation (9).…”

Section: Carbon Fibre Sensor Meshesmentioning

confidence: 99%

Section: Carbon Fibre Sensor Meshesmentioning

confidence: 99%

“…Carbon fibre sensor mesh applied on a 1 m x 1 m PMMA plate. Each sensor has a length of 300mm [9]. Figure 11 shows the determined strain ε x for each element of the mesh.…”

mentioning

confidence: 99%

mentioning

confidence: 99%

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Carbon Fibre Sensor: Theory and Application

Horoschenkoff¹,

Christner²

2012

Composites and Their Applications

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“…The piezo-resistivity of CFs could become a promising technique for structural health monitoring to those structures containing the CFs, where the strain change of the material can be monitored by a resistance change [ 6 , 7 , 8 ]. In this regard, the CFs can act either as a sensing sensor or damage sensor by measuring the resistance variation under mechanical strain [ 9 , 10 , 11 ]. This resistance is defined by Equation (1):

where R is the electrical resistance (Ω), ρ is the resistivity or specific resistance (Ω.m), L and A are the length and the cross-sectional area of the fiber, respectively.…”

Section: Introductionmentioning

confidence: 99%

Electromechanical Assessment and Induced Temperature Measurement of Carbon Fiber Tows under Tensile Condition

2020

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The paper presents an investigation and analysis of the electromechanical and thermal characteristics of the carbon fiber alone as single tow and embedded in host materials such as polymer e.g., acrylonitrile butadiene styrene (ABS) using 3D printing. While carbon fibers can partially reinforce the structure, they can act as sensors to monitor the structural health of the host material. The piezo-resistive behavior was examined without any pretreatment of the carbon fiber under tensile test in both cases. Special focus on the filaments clamping types and their effects was observed. An auxetic behavior was exhibited; otherwise, the free part shows elastic and yielding ranges with break point at high resistance. An induced temperature of the carbon fiber was measured during the tensile test to show low variation. The carbon fiber can provide strength contribution to the host material depending on the percentage of filling the material in 3D printing. The relative variation of the electrical resistance increases by 400% while embedded in the host material, but decreases as the tows filament density increases from 1 to 12 K.

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Chronic Exposure to Bisphenol A Exacerbates Dental Fluorosis in Growing Rats

Jedeon

Houari

Loiodice

et al. 2016

Journal of Bone and Mineral Research

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Enamel defects resulting from environmental conditions and way of life are public health concerns because of their high prevalence. Because their etiology is unclear, the aim of this study was to analyze the various forms of enamel hypomineralization, and to characterize the genes involved in this process to determine the mechanisms involved in disruptions of amelogenesis. We used bisphenol A (BPA) and fluoride as models; both are commonly encountered in human populations and utilized in dentistry. Wistar rats were chronically exposed to 5 μg/kg/day BPA from day 1 of gestation to day 65 after birth (P65) and 5 mM fluoride from P21 to P65. Resulting enamel defects were comparable to the human enamel pathologies molar incisor hypomineralization (MIH) and dental fluorosis (DF) respectively, and were more severe in rats exposed to both agents than to each agent alone. Large-scale transcriptomic analysis of dental epithelium showed a small group of genes the expression of which was affected by exposure to BPA or NaF. Among the most modulated, many are directly involved in amelogenesis (Amelx, Enam, Klk4, Mmp12, Slc26a4, and Slc5a8), and can be regrouped as forming the "hypomineralization enameloma." Each of these gene expression perturbations may contribute to enamel defects. Exposure to BPA weakens enamel, making it more prone to generate frequent mineralization defects MIH and DF. Our study identifies hypomineralization genes that may enable the use of dental enamel as an early marker of exposure to environmental toxicants because of its unique ability to retrospectively record ameloblast pathophysiology. © 2016 American Society for Bone and Mineral Research.

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Carbon fibre sensor meshes: Simulation and experiment

Cited by 7 publications

References 4 publications

Carbon Fibre Sensor: Theory and Application

Carbon Fibre Sensor: Theory and Application

Electromechanical Assessment and Induced Temperature Measurement of Carbon Fiber Tows under Tensile Condition

Chronic Exposure to Bisphenol A Exacerbates Dental Fluorosis in Growing Rats

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