The Experts below are selected from a list of 2442 Experts worldwide ranked by ideXlab platform
René M. Rossi - One of the best experts on this subject based on the ideXlab platform.
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The effect of body postures on the distribution of air gap thickness and contact area
International Journal of Biometeorology, 2017Co-Authors: Emel Mert, Agnes Psikuta, Marie-ange Bueno, René M. RossiAbstract:The heat and mass transfer in clothing is predominantly dependent on the thickness of air layer and the magnitude of contact area between the body and the Garment. The air gap thickness and magnitude of the contact area can be affected by the posture of the human body. Therefore, in this study, the distribution of the air gap and the contact area were investigated for different body postures of a flexible manikin. In addition, the effect of the Garment Fit (regular and loose) and style (t-shirts, sweatpants, jacket and trousers) were analysed for the interaction between the body postures and the Garment properties. A flexible manikin was scanned using a three-dimensional (3D) body scanning technique, and the scans were post-processed in dedicated software. The body posture had a strong effect on the air gap thickness and the contact area for regions where the Garment had a certain distance from the body. Furthermore, a mathematical model was proposed to estimate the possible heat transfer coefficient for the observed air layers and their change with posture. The outcome of this study can be used to improve the design of the protective and functional Garments and predict their effect on the human body.
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Contribution of Garment Fit and style to thermal comfort at the lower body
International Journal of Biometeorology, 2016Co-Authors: Emel Mert, Sonja Böhnisch, Agnes Psikuta, Marie-ange Bueno, René M. RossiAbstract:The heat and mass transfer between the human body and the environment is not only affected by the properties of the fabric, but also by the size of the air gap thickness and the magnitude of the contact area between the body and Garment. In this clothing-human-environment system, there is also an interaction between the clothing and the physiological response of the wearer. Therefore, the aim of this study was to evaluate the distribution of the air gap thickness and the contact area for the male lower body in relation to the Garment Fit and style using a three-dimensional (3D) body scanning method with a manikin. Moreover, their relation with the physiological response of the lower body was analysed using the physiological modelling. The presented study showed that the change in the air gap thickness and the contact area due to Garment Fit was greater for legs than the pelvis area due to regional differences of the body. Furthermore, the Garment style did not have any effect on the core temperature or total water loss of the lower body, whereas the effect of Garment Fit on the core temperature and total water loss of lower body was observed only for 40 °C of ambient temperature. The skin temperatures were higher for especially loose Garments at thigh than the tight Garments. Consequently, the results of this study indicated that the comfort level of the human body for a given purpose can be adjusted by selection of fabric type and the design of ease allowances in the Garment depending on the body region.
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air gap thickness and contact area in undershirts with various moisture contents influence of Garment Fit fabric structure and fiber composition
Textile Research Journal, 2015Co-Authors: Agnes Psikuta, Joanna Frackiewiczkaczmarek, Marieange Ueno, René M. RossiAbstract:The heat and water vapor transport in clothing results from fabric properties, air layers enclosed in the Garment and environmental conditions. Accumulation of moisture in clothing layers intensifies this transport because of the change in thermal properties of wet fabrics and the size of air gap thickness and the contact area. This paper presents distribution of air gaps and contact areas in relation to various moisture contents in typical undershirts confectioned from fabrics with contrasting affinity to moisture. The effect of the undershirt Fit, body region, fabric structure and fiber type is also discussed. The air gap thickness and the contact area were determined using three-dimensional scanning and the post-processing technique.The results show that the influence of the moisture content on the sought parameters noticeably varied among body regions and was related to the regional Fit of the clothing. This variation was larger in cotton than polyester undershirts or those containing spandex, but the...
Agnes Psikuta - One of the best experts on this subject based on the ideXlab platform.
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Local clothing thermal properties of typical office ensembles under realistic static and dynamic conditions
International Journal of Biometeorology, 2018Co-Authors: S Stephanie Vesela, Agnes Psikuta, A.j.h. FrijnsAbstract:An accurate local thermal sensation model is indispensable for the effective development of personalized conditioning systems in office environments. The output of such a model relies on the accurate prediction of local skin temperatures, which in turn depend on reliable input data of the local clothing thermal resistance and clothing area factor. However, for typical office clothing ensembles, only few local datasets are available in the literature. In this study, the dry thermal resistance was measured for 23 typical office clothing ensembles according to EN-ISO 15831 on a sweating agile manikin. For 6 ensembles, the effects of different air speeds and body movement were also included. Local clothing area factors were estimated based on 3D scans. Local differences can be found between the measured local insulation values and local area factors of this study and the data of other studies. These differences are likely due to the Garment Fit on the manikin and reveal the necessity of reporting clothing Fit parameters (e.g., ease allowance) in the publications. The increased air speed and added body movement mostly decreased the local clothing insulation. However, the reduction is different for all body parts, and therefore cannot be generalized. This study also provides a correlation between the local clothing insulation and the ease allowance for body parts covered with a single layer of clothing. In conclusion, the need for well-documented measurements is emphasized to get reproducible results and to choose accurate clothing parameters for thermo-physiological and thermal sensation modeling.
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Measurements of local clothing resistances and local area factors under various conditions
2017Co-Authors: S Stephanie Vesela, Agnes Psikuta, Boris Kingma, A.j.h. FrijnsAbstract:The local dry thermal resistances of typical office ensembles was measured according to EN- ISO 15831 on a sweating agile manikin for different air speeds and body movement. Also, the local clothing area factors were estimated based on 3D scans. The results of five representative office outFits are discussed in this paper. Measured local insulation values and estimated local area factors differ from data in other studies. Since literature data are mostly between values obtained for regular and loose Fit in this study, this difference is likely due to the Garment Fit on the manikin and reveals the necessity of reporting clothing Fit parameters (e.g. ease allowance) in the publications. The increased air speed and body movement mostly decrease the local dry thermal insulation. We emphasize the need for well documented Garment parameters and measurements to get reproducible results and to choose accurate clothing parameters for thermo-physiological and thermal sensation modelling.
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The effect of body postures on the distribution of air gap thickness and contact area
International Journal of Biometeorology, 2017Co-Authors: Emel Mert, Agnes Psikuta, Marie-ange Bueno, René M. RossiAbstract:The heat and mass transfer in clothing is predominantly dependent on the thickness of air layer and the magnitude of contact area between the body and the Garment. The air gap thickness and magnitude of the contact area can be affected by the posture of the human body. Therefore, in this study, the distribution of the air gap and the contact area were investigated for different body postures of a flexible manikin. In addition, the effect of the Garment Fit (regular and loose) and style (t-shirts, sweatpants, jacket and trousers) were analysed for the interaction between the body postures and the Garment properties. A flexible manikin was scanned using a three-dimensional (3D) body scanning technique, and the scans were post-processed in dedicated software. The body posture had a strong effect on the air gap thickness and the contact area for regions where the Garment had a certain distance from the body. Furthermore, a mathematical model was proposed to estimate the possible heat transfer coefficient for the observed air layers and their change with posture. The outcome of this study can be used to improve the design of the protective and functional Garments and predict their effect on the human body.
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Contribution of Garment Fit and style to thermal comfort at the lower body
International Journal of Biometeorology, 2016Co-Authors: Emel Mert, Sonja Böhnisch, Agnes Psikuta, Marie-ange Bueno, René M. RossiAbstract:The heat and mass transfer between the human body and the environment is not only affected by the properties of the fabric, but also by the size of the air gap thickness and the magnitude of the contact area between the body and Garment. In this clothing-human-environment system, there is also an interaction between the clothing and the physiological response of the wearer. Therefore, the aim of this study was to evaluate the distribution of the air gap thickness and the contact area for the male lower body in relation to the Garment Fit and style using a three-dimensional (3D) body scanning method with a manikin. Moreover, their relation with the physiological response of the lower body was analysed using the physiological modelling. The presented study showed that the change in the air gap thickness and the contact area due to Garment Fit was greater for legs than the pelvis area due to regional differences of the body. Furthermore, the Garment style did not have any effect on the core temperature or total water loss of the lower body, whereas the effect of Garment Fit on the core temperature and total water loss of lower body was observed only for 40 °C of ambient temperature. The skin temperatures were higher for especially loose Garments at thigh than the tight Garments. Consequently, the results of this study indicated that the comfort level of the human body for a given purpose can be adjusted by selection of fabric type and the design of ease allowances in the Garment depending on the body region.
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air gap thickness and contact area in undershirts with various moisture contents influence of Garment Fit fabric structure and fiber composition
Textile Research Journal, 2015Co-Authors: Agnes Psikuta, Joanna Frackiewiczkaczmarek, Marieange Ueno, René M. RossiAbstract:The heat and water vapor transport in clothing results from fabric properties, air layers enclosed in the Garment and environmental conditions. Accumulation of moisture in clothing layers intensifies this transport because of the change in thermal properties of wet fabrics and the size of air gap thickness and the contact area. This paper presents distribution of air gaps and contact areas in relation to various moisture contents in typical undershirts confectioned from fabrics with contrasting affinity to moisture. The effect of the undershirt Fit, body region, fabric structure and fiber type is also discussed. The air gap thickness and the contact area were determined using three-dimensional scanning and the post-processing technique.The results show that the influence of the moisture content on the sought parameters noticeably varied among body regions and was related to the regional Fit of the clothing. This variation was larger in cotton than polyester undershirts or those containing spandex, but the...
Emel Mert - One of the best experts on this subject based on the ideXlab platform.
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The effect of body postures on the distribution of air gap thickness and contact area
International Journal of Biometeorology, 2017Co-Authors: Emel Mert, Agnes Psikuta, Marie-ange Bueno, René M. RossiAbstract:The heat and mass transfer in clothing is predominantly dependent on the thickness of air layer and the magnitude of contact area between the body and the Garment. The air gap thickness and magnitude of the contact area can be affected by the posture of the human body. Therefore, in this study, the distribution of the air gap and the contact area were investigated for different body postures of a flexible manikin. In addition, the effect of the Garment Fit (regular and loose) and style (t-shirts, sweatpants, jacket and trousers) were analysed for the interaction between the body postures and the Garment properties. A flexible manikin was scanned using a three-dimensional (3D) body scanning technique, and the scans were post-processed in dedicated software. The body posture had a strong effect on the air gap thickness and the contact area for regions where the Garment had a certain distance from the body. Furthermore, a mathematical model was proposed to estimate the possible heat transfer coefficient for the observed air layers and their change with posture. The outcome of this study can be used to improve the design of the protective and functional Garments and predict their effect on the human body.
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Contribution of Garment Fit and style to thermal comfort at the lower body
International Journal of Biometeorology, 2016Co-Authors: Emel Mert, Sonja Böhnisch, Agnes Psikuta, Marie-ange Bueno, René M. RossiAbstract:The heat and mass transfer between the human body and the environment is not only affected by the properties of the fabric, but also by the size of the air gap thickness and the magnitude of the contact area between the body and Garment. In this clothing-human-environment system, there is also an interaction between the clothing and the physiological response of the wearer. Therefore, the aim of this study was to evaluate the distribution of the air gap thickness and the contact area for the male lower body in relation to the Garment Fit and style using a three-dimensional (3D) body scanning method with a manikin. Moreover, their relation with the physiological response of the lower body was analysed using the physiological modelling. The presented study showed that the change in the air gap thickness and the contact area due to Garment Fit was greater for legs than the pelvis area due to regional differences of the body. Furthermore, the Garment style did not have any effect on the core temperature or total water loss of the lower body, whereas the effect of Garment Fit on the core temperature and total water loss of lower body was observed only for 40 °C of ambient temperature. The skin temperatures were higher for especially loose Garments at thigh than the tight Garments. Consequently, the results of this study indicated that the comfort level of the human body for a given purpose can be adjusted by selection of fabric type and the design of ease allowances in the Garment depending on the body region.
Frank Deruyck - One of the best experts on this subject based on the ideXlab platform.
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Effect of rowing posture on body measurements and skin–sportswear interface pressure and implications on Garment Fit:
Journal of Industrial Textiles, 2019Co-Authors: Simona-ileana Vasile, Joris Cools, Alexandra De Raeve, Benny Malengier, Frank DeruyckAbstract:Sportswear should Fit well each individual athlete while preserving its ergonomic and pressure comfort upon sport-specific movements. This study aims to quantify the effect of two rowing postures o...
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effect of rowing posture on body measurements and skin sportswear interface pressure and implications on Garment Fit
Journal of Industrial Textiles, 2019Co-Authors: Simona-ileana Vasile, Joris Cools, Alexandra De Raeve, Benny Malengier, Frank DeruyckAbstract:Sportswear should Fit well each individual athlete while preserving its ergonomic and pressure comfort upon sport-specific movements. This study aims to quantify the effect of two rowing postures o...
Fatma Kalaoglu - One of the best experts on this subject based on the ideXlab platform.
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Exploring the factors influencing consumers’ virtual Garment Fit satisfactions
Research Journal of Textile and Apparel, 2020Co-Authors: Evrim Buyukaslan, Fatma Baytar, Fatma KalaogluAbstract:Purpose Virtual Garment Fit will be an important determinant for the online purchase decision of consumers in the near future. Therefore, the purpose of this study was to develop a conceptual model to explore the factors that might impact consumers’ virtual Garment Fit satisfactions (VFS). Design/methodology/approach Virtual body satisfaction (VBS), acceptance of the virtual try-on technology and virtual fabric properties were examined as factors that would potentially impact consumers’ VFS. Forty-five women, from 18 to 35 years old, were recruited for the study. Participants were scanned by using a 3D body scanner and their scans were used for virtual try-on. Seven circular skirts with different fabric properties were created by using a commercial 3D simulation software. Participants evaluated the Fit of these virtual skirts on their own virtual bodies. Participants’ VFSs and their correlations with VBSs, acceptance of virtual try-on technology and virtual fabric properties were analyzed by Pearson’s correlation test. Findings Participants’ VBSs at hips were correlated fairly good with their VFSs (r = 0.50, N = 180, p < 0.01) and their acceptance of virtual try-on technology was weakly correlated to VFSs (r = 0.24, N = 180, p < 0.01). However, no significant correlation was found between virtual fabric properties and participants’ VFSs. Research limitations/implications This study did not examine the ideal beauty notion, which may affect consumers’ expectations about how the Garments should Fit on them. Another limitation was the use of a single skirt design as a stimulus. Originality/value Studies that explore virtual Garment Fit often measure the Garment ease or the virtual fabric tension and ignore consumer perspective, which is essential for online purchase decision. This study is unique as it prioritizes consumers’ perspectives.
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Evaluation of a Garment Fit Model Using AHP
Fibres & Textiles in Eastern Europe, 2015Co-Authors: Simona Jevšnik, Fatma Kalaoglu, Selin Hanife Eryürük, M Bizjak, Zoran StjepanovičAbstract:Garment Fit on a body model is an important factor for designing comfortable, functional and well Fitting Garments. Nowadays the virtual prototyping of Garments provides high potential for design, product development and marketing processes. Previous examinations of Garment Fit to the body in a real and virtual environment were merely focused on expert evaluation by way of a descriptive comparison of proper and improper areas for Fitting. Therefore the problem area in our research was to examine the Fit of a skirt on a live model and on virtual models such as parametric and scanned body models in order to propose which virtual human body is the most suitable where Garment Fit is concerned. The paper also discusses the Fit of a skirt on an individual part of the human body with respect to predefined areas. A numerical study with a questionnaire survey database was conducted with the aim of selecting the best model to assess the Fit of a skirt to the human body, and the Analytic Hierarchy Process (AHP) was used to evaluate the questionnaire results. The results obtained confirm that the design is most important factor when evaluating a skirt’s Fit to the body. Furthermore results confirmed that the hips and abdomen areas were the most important for evaluators when assessing as kirt’s Fit to the body.
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Virtual Fitting of a Skirt on a Parametric And A Scanned Body Model
MARMARA UNIVERSITY JOURNAL OF SCIENCE, 2015Co-Authors: Evrim Buyukaslan, Simona Jevšnik, Fatma KalaogluAbstract:Virtual prototyping is often used for animations and graphics; however it also has great advantages for Garment industry such as minimizing the time and customization of the Garment for individual customers. 3 D body scanners offer better simulation results than a parametric body model. The aim of this study is to see how a Garment is simulated on a scanned body model and a parametric body model. In addition we wanted to see the real Fit of a skirt on a wearer and compare it with its virtual Fitting. Thus we generated two virtual body models: a scanned and a parametric model. Meanwhile we determined a skirt design and created 2D patterns according to the design. Finally the skirt is tailored and generated 2D patterns are used to develop 3D virtual Garments. It is well-known that mechanical properties of a fabric have influence on the simulation results. Thus mechanical properties of the fabric are measured by using Fabric Analysis by Simple Testing (FAST) and these data are utilized to generate a simulated skirt. At the end live model is dressed with produced skirt and photographed. Real Garment Fit and their virtual Fits are compared to see how satisfactory the Garment simulations are. Currently there are many studies to improve the virtual Garment images. This study helps to understand the Fit differences between Garment simulations on a scanned body model and a parametric body model as well as a chance to compare them with the real Fit on a live model.
