Materiały konferencyjne, referaty (WTMiWT)

Stały URI dla kolekcjihttp://hdl.handle.net/11652/159

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20222

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Autorsearch.filters.applied.operator.equals: search.filters.author.Nowak, IwonaData rozpoczęcia: 2020

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Teraz wyświetlane 1 - 2 z 2
  • Pozycja
    Analysis of pressure parameters in orthopedic footwear for people suffering from diabetic foot syndrome
    (Wydawnictwo Politechniki Łódzkiej, 2022) Mikołajczyk, Zbigniew; Nowak, Iwona; Kuchyts, Yvan; Mikołajczyk-Solińska, Melania
    The paper examines the anthropotechnical design of orthopedic footwear for patients with diabetic foot syndrome. A 3D distance knitted fabric is used for the shoe insert. For the purpose of the research, a 7 mm thick knitted fabric with transverse elasticity of 76 kPa was designed and produced on a doublebar warp knitting machine. With the use of the FreeMed Professional strain gauge mat, the pressures exerted by the foot on a „bare” walking surface and on the surface equipped with the distance knitted fabric were measured and compared, proving that in the latter case the unit pressure on the patient's foot decreased by 25%. The obtained measurements provide a good starting point for further research on the optimization of loads on the human foot, in case of various lower limbs diseases, including anatomical changes, as well as and in relation to people who are physically overloaded due to working in standing position or being in constant motion.
  • Pozycja
    Knitted shields against electromagnetic waves
    (Wydawnictwo Politechniki Łódzkiej, 2022) Mikołajczyk, Zbigniew; Nowak, Iwona; Szewczyk, Monika; Januszkiewicz, Łukasz; Junak, Joanna
    The purpose of the research is to counteract the negative impact of electromagnetic waves on the human body by using knitted textile barriers. Four variants of knitted fabrics with plain weft stitches were designed and manufactured from electrically conductive yarns with resistance of 490 ohms. The variants of the knitted fabrics differed significantly in structural parameters, including loop density – varying from 15 to 0.9 thousand loops and fabric cover from 64 to 33%. The barrier properties against reflected waves at frequencies from 2 to 7 GHz ranged from 10 to 64 dB. It has been proven that shielding effectiveness SE depends on stitch geometry and structural parameters of the knitted fabric. It is a good starting point for further research on the optimization of the performance of knitted barriers against electromagnetic waves.