3D Object Detection in LIDAR Point Cloud Based on Background Subtraction

Tailored saturation functions and its application to liquid uptake processes in fibrous composite reinforcements

“…Experimental data from our previous research 23,24 was used to validate the saturation function construction method and the liquid uptake functions. These results were obtained by testing water and resin uptake in fibrous structures such as polyester yarns and fibreglass chopped strand mats, respectively.…”

“…The tested yarn samples were polyester (PET) ring-spun staple yarns produced by Du Pont de Nemours Inc. with the same yarn count or, in another term, linear density ( q = 19.67 tex) and twist level (1000 tpm). 23 The fibre length of the yarns was the same, but their cross-sections differed. Round and scalloped oval (Figure 1) fibre shapes were applied in this study, while their mean area-equivalent diameter was 14.14 μm and 13.69 μm, respectively.…”

“…23

Figure 1.Longitudinal view of yarns at magnifications of 50× ( a ) and 500x (b) and cross-sectional images (c) of the PET fibers with round ( top ) and scalloped oval ( bottom ) cross-section based on SEM micrographs. 23

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“…The applied liquids were distilled water and Ashland Aropol G235 E-4163 unsaturated polyester (UP) resin, respectively. The physical properties of the used liquids such as density ( ρ ), dynamic viscosity ( η ), surface tension ( γ ) together with the mean wetting contact angle ( θ average ) 23,24 and the proportionality parameter ( c ) were calculated by equation (14) and are summarised in Table 1.…”

“…Round and scalloped oval (Figure 1) fibre shapes were applied in this study, while their mean area-equivalent diameter was 14.14 μm and 13.69 μm, respectively. 23

Figure 1.Longitudinal view of yarns at magnifications of 50× ( a ) and 500x (b) and cross-sectional images (c) of the PET fibers with round ( top ) and scalloped oval ( bottom ) cross-section based on SEM micrographs. 23

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