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- 저자 : Vincent Nierstrasz (검색결과 2 건)
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Tactile Comfort Prediction of Functional Fabrics from Instrumental Data Using Intelligence Systems
Melkie Getnet Tadesse,Yan Chen,Lichuan Wang,Vincent Nierstrasz,Carmen Loghin 한국섬유공학회 2019 Fibers and polymers Vol.20 No.1
Subjective and objective evaluations of the handle of textile materials are very important to describe its tactile comfort for next-to-skin goods. In this paper, the applicability of artificial neural-network (ANN) and adaptive neuro-fuzzy inference system (ANFIS) modeling approaches for the prediction of the psychological perceptions of functional fabrics from mechanical properties were investigated. Six distinct functional fabrics were evaluated using human subjects for their tactile score and total hand values (THV) using tactile and comfort-based fabric touch attributes. Then, the measurement ofmechanical properties of the same set of samples using KES-FB was performed. The RMSE values for ANN and ANFIS predictions were 0.014 and 0.0122 and are extremely lower than the variations of the perception scores of 0.644 and 0.85 for ANN and ANFIS, respectively with fewer prediction errors. The observed results indicated that the predicted tactile score and THV are almost very close to the actual output obtained using the human judgment. Fabric objective measurement technology, therefore, provides reliable measurement approaches for functional fabric quality inspection, control, and design specification.
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Sina Seipel,Junchun Yu,Martina Viková,Michal Vik,Marie Koldinská,Antonín Havelka,Vincent A. Nierstrasz 한국섬유공학회 2019 Fibers and polymers Vol.20 No.7
The development and design of novel functional and smart textile materials such as textile sensors and multicoloredsystems based on photochromic dyes necessitate controls of color intensities, switching speeds, and materialdurability. Precise control and synchronization of dye kinetics are important for multi-colored photochromic applicationsespecially. However, durability towards abrasion and washing should not be compromised on if we aim to design reliablefuture textile products. In this study, two different commercial photochromic dyes – a naphthopyran and a spirooxazine-baseddye – have been applied on PET fabric by inkjet printing and UV-LED curing. The photochromic textiles’ color behavior,fastness to abrasion and washing, and handle are evaluated using spectrophotometry, scanning electron microscopy, andKawabata evaluation system. Despite a decrease in color performance after washing, the photochromic inkjet print iseffective and barely influences the textile structure. Reduced rigidity of the host matrix promoted higher color yields andfaster dye kinetics, but also improved durability towards abrasion and washing. In order to synchronize kinetics of thedifferent dye types for multi-colored applications, distinct curing conditions are preferable, which, however, result in varyingprint durability. In the design of multi-colored photochromic textiles, dye kinetics, and durability have to be balanced.
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