Yıl 2019, Cilt , Sayı 17, Sayfalar 711 - 717 2019-12-31

The Effect Of Fabrıc Structural Geometry On Thermal Transfer Performance In Sportswear
The Effect Of Fabrıc Structural Geometry On Thermal Transfer Performance In Sportswear

SERTAÇ GÜNEY [1] , HİLAL BALCI [2] , İBRAHİM ÜÇGÜL [3]


Especially for textiles, which contain open structure pores, airflow carrying heat energy transfers from one side to another side by conduction and convection. Convective heat transfer plays a very important role in thermal transfer performance of textiles due to its porous structure. Compression sportswear are generally produced from knitted porous stretch fabrics, which get extended on wearing and remain in the extended state. Since they are worn next to skin and are direct contact with the body surface, their thermal comfort properties are effective on overall clothing comfort. Perhaps the greater contact of the garment to the skin together with the constant airflow can transfer the heat better from the body to the environment. Most of the well-known auxetic materials possess porous microstructures and the sizes of the pores of auxetic materials can vary during the compressive and tensile deformation. In this study, an investigation has been made to evaluate the auxetic effect on the thermal transfer performance of clothing. Two type fabrics having the very similar fabric properties but different knitting structures were provided from the market and producer. While one has an auxetic structure, the other has a standard warp knitting structure commonly used in market. As Permeability and porosity are strongly related to each other, we compared air permeability of fabrics in extended state considering the fabric extension results taken from virtual avatar having the same body measurements as subjects in 3D simulation. Fabric surface temperature changes on different clothed body parts investigated by an infrared thermal camera and analysed in thermal camera software (Flir Tools) for thermal transfer performance according to the wearing protocol. 

Especially for textiles, which contain open structure pores, airflow carrying heat energy transfers from one side to another side by conduction and convection. Convective heat transfer plays a very important role in thermal transfer performance of textiles due to its porous structure. Compression sportswear are generally produced from knitted porous stretch fabrics, which get extended on wearing and remain in the extended state. Since they are worn next to skin and are direct contact with the body surface, their thermal comfort properties are effective on overall clothing comfort. Perhaps the greater contact of the garment to the skin together with the constant airflow can transfer the heat better from the body to the environment. Most of the well-known auxetic materials possess porous microstructures and the sizes of the pores of auxetic materials can vary during the compressive and tensile deformation. In this study, an investigation has been made to evaluate the auxetic effect on the thermal transfer performance of clothing. Two type fabrics having the very similar fabric properties but different knitting structures were provided from the market and producer. While one has an auxetic structure, the other has a standard warp knitting structure commonly used in market. As Permeability and porosity are strongly related to each other, we compared air permeability of fabrics in extended state considering the fabric extension results taken from virtual avatar having the same body measurements as subjects in 3D simulation. Fabric surface temperature changes on different clothed body parts investigated by an infrared thermal camera and analysed in thermal camera software (Flir Tools) for thermal transfer performance according to the wearing protocol. 

  • [1] Liu, R., Little, T. and Williams, Jr., Compression Form-fitted Athletic Wear: Pressure Performance, Moisture Management Properties under Different Tension Ratios and Corresponding Psychophysical Responses, Fiber and Polymers, (2014), Vol.15 (3), pp.632-644.
  • [2] Gupta, D., Chattopadhyay, R. and Bera, M., Comfort properties of pressure garments in extended state, Indian Journal of Fibre&Textile Research, (2011), Vol.36, pp.415-421.
  • [3] D Fournet, D. and Havenith, G., (2017), Assessment of Sport Garments Using Infrared Thermography, Application of Infrared Thermography in Sports Science, Chapter 7, pp 159-183.
  • [4] Ma, P., Chang, Y., Boakye, A. and Jiang, G., (2017), Reviw on the knitted structures with auxetic effect, The Journal of The Textile Institute, Vol.108, 6, 947-961.
  • [5] Gibson,L. J., Ashby, M.F., Schajer, G.S. and Robertson, C.I., (1982), The mechanics of two-dimensional cellular materials, Proceedings of the Royal Society of London A: Mathematical, Physical and Engineering Sciences, 382, 25-42.
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Yazarlar

Orcid: 0000-0002-9301-0026
Yazar: SERTAÇ GÜNEY (Sorumlu Yazar)
Kurum: SELCUK UNIVERSITY
Ülke: Turkey


Orcid: 0000-0001-5442-8860
Yazar: HİLAL BALCI
Kurum: ISTANBUL AREL UNIVERSITY
Ülke: Turkey


Orcid: 0000-0001-9794-0653
Yazar: İBRAHİM ÜÇGÜL
Kurum: Süleyman Demirel University
Ülke: Turkey


Tarihler

Yayımlanma Tarihi : 31 Aralık 2019

APA GÜNEY, S , BALCI, H , ÜÇGÜL, İ . (2019). The Effect Of Fabrıc Structural Geometry On Thermal Transfer Performance In Sportswear. Avrupa Bilim ve Teknoloji Dergisi , (17) , 711-717 . DOI: 10.31590/ejosat.629477