The Experts below are selected from a list of 24 Experts worldwide ranked by ideXlab platform
Lucy E Dunne - One of the best experts on this subject based on the ideXlab platform.
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effects of the textile sensor interface on stitched strain sensor performance
International Symposium on Wearable Computers, 2019Co-Authors: Ellen Dupler, Lucy E DunneAbstract:The influence of the textile substrate on the performance of a textile-based strain sensor has not been well understood or characterized in many wearable sensor evaluations. The underlying textile has its own anisotropic mechanical behaviors due to its woven or knit fabrication process, and introduces non-trivial structural influences on integrated wearable strain sensors. This study considers stitched strain sensors of two stitch geometries, fabricated on two different knit fabrics, with the sensor stitched in different orientations with respect to the knit structure. The resulting mechanical and electrical performance is characterized under cyclic extension, as the angle of extension (relative to the fabric) is also incrementally changed. The results illustrate a shift from linear to non-linear mechanical behavior as fabric stiffness increases, and variations in behavior between stitch geometries. Results show that force direction and sensor placement both introduce variability in calculated elastic modulus, which affect sensor modeling (e.g. predicting applied force from sensor response). A novel stitch geometry (the Chainstitch sensor) is characterized as having a higher gauge force and lower transverse sensitivity factor than the coverstitch sensor. This work offers insight into the textile-sensor interface and design implications for development of textile-based sensors.
Ellen Dupler - One of the best experts on this subject based on the ideXlab platform.
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effects of the textile sensor interface on stitched strain sensor performance
International Symposium on Wearable Computers, 2019Co-Authors: Ellen Dupler, Lucy E DunneAbstract:The influence of the textile substrate on the performance of a textile-based strain sensor has not been well understood or characterized in many wearable sensor evaluations. The underlying textile has its own anisotropic mechanical behaviors due to its woven or knit fabrication process, and introduces non-trivial structural influences on integrated wearable strain sensors. This study considers stitched strain sensors of two stitch geometries, fabricated on two different knit fabrics, with the sensor stitched in different orientations with respect to the knit structure. The resulting mechanical and electrical performance is characterized under cyclic extension, as the angle of extension (relative to the fabric) is also incrementally changed. The results illustrate a shift from linear to non-linear mechanical behavior as fabric stiffness increases, and variations in behavior between stitch geometries. Results show that force direction and sensor placement both introduce variability in calculated elastic modulus, which affect sensor modeling (e.g. predicting applied force from sensor response). A novel stitch geometry (the Chainstitch sensor) is characterized as having a higher gauge force and lower transverse sensitivity factor than the coverstitch sensor. This work offers insight into the textile-sensor interface and design implications for development of textile-based sensors.
Khedher Faouzi - One of the best experts on this subject based on the ideXlab platform.
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consumed sewing thread behaviour based on lockstitch and Chainstitch
Indian Journal of Fibre & Textile Research, 2017Co-Authors: Jaouachi Boubaker, Aouine Sana, Khedher FaouziAbstract:The effect of stitches/cm, number of assembly layers and fabric thickness on the sewing thread consumption values has been studied using the lockstitch type 301 and Chainstitch type 401. Experimental, regressive and geometrical consumption values are compared and discussed to select the best predictive modelling technique to objectively estimate the thread amount required to seam garments. Compared to lockstitch, the thread consumption using Chainstitch includes higher lengths of sewing threads. Moreover, in Chainstitch type 401, the results depict that fabric sample thickness does not have the same influence rate as in the lockstitch case. Therefore, among all tested inputs, the stitch type remains the most important parameter in the case of Chainstitch. Regarding regressive and geometrical methods, the regressive technique is found more effective than the geometrical method and fitted the experimental results widely. This difference can be explained by the hypothesis used to simplify the determination of an approximate consumption value. The developed multi-linear models allow a fruitful prediction of the consumed thread amount for the experimental design of interest.
Jaouachi Boubaker - One of the best experts on this subject based on the ideXlab platform.
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consumed sewing thread behaviour based on lockstitch and Chainstitch
Indian Journal of Fibre & Textile Research, 2017Co-Authors: Jaouachi Boubaker, Aouine Sana, Khedher FaouziAbstract:The effect of stitches/cm, number of assembly layers and fabric thickness on the sewing thread consumption values has been studied using the lockstitch type 301 and Chainstitch type 401. Experimental, regressive and geometrical consumption values are compared and discussed to select the best predictive modelling technique to objectively estimate the thread amount required to seam garments. Compared to lockstitch, the thread consumption using Chainstitch includes higher lengths of sewing threads. Moreover, in Chainstitch type 401, the results depict that fabric sample thickness does not have the same influence rate as in the lockstitch case. Therefore, among all tested inputs, the stitch type remains the most important parameter in the case of Chainstitch. Regarding regressive and geometrical methods, the regressive technique is found more effective than the geometrical method and fitted the experimental results widely. This difference can be explained by the hypothesis used to simplify the determination of an approximate consumption value. The developed multi-linear models allow a fruitful prediction of the consumed thread amount for the experimental design of interest.
A Mukhopadhyay - One of the best experts on this subject based on the ideXlab platform.
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relative performance of lockstitch and Chainstitch at the seat seam of military trouser
Journal of Engineered Fibers and Fabrics, 2008Co-Authors: A MukhopadhyayAbstract:An experimental investigation of the effect of two different type of stitches viz., lockstitch and Chainstitch at the seat seam of trouser for military armed forces has been reported. Performance of Chainstitched seam is found to be much better as regards lower value of force at low level of strain, higher value of force at break, strain at break and work of rapture. In general with the change in thread linear density, greater improvement in seam strength, seam strain at break and work up to fracture are obtained in case of Chainstitched seam. On laundering, in general force at small strain and force at break increases, the change being more in case of lockstitched fabric. However, strain at break decrease marginally on laundering in case of both the stitches.