TY - JOUR T1 - EXPERIMENTAL AND NUMERICAL STUDY OF SEWING SEAMS OF AUTOMOBILE SEAT COVERS UNDER UNIDIRECTIONAL AND MULTIAXIAL LOADING AU - Kovalova, Natalia PY - 2019 DA - December Y2 - 2019 DO - 10.32710/tekstilvekonfeksiyon.495322 JF - Textile and Apparel PB - Ege University WT - DergiPark SN - 1300-3356 SP - 322 EP - 335 VL - 29 IS - 4 LA - en AB - In industrialtextiles, knowing the exact characteristics and behaviour of materials isimportant. A several precise studies and numerical models of materialstructures of fabrics, foams, and threads have been developed, but the behavioursof entire functional parts have been researched to a lesser extent. For carseats, industrial textiles not just cover the underlying foam but also increaserigidity of the seat cushion and influence viscoelastic behaviours of foams. Moreover,strength of sewn seams is one of the main quality parameters. Herein, fourpolyester and polyamide threads were sewn on a material used for car seat coversthrough lockstitch sewing. Combinations of these materials were studied using statictests in the unidirectional and multiaxial variants. The experimental measurementsrecorded using a high-speed camera and computer tomography were used to create CADmodels. Numerical simulations were conducted using these models and theobtained material models. These model studies help predict and describe thestresses emerging within various types of textile and the threads in theirconnections. The simulation results agree well with the experimental results KW - sewing seam KW - strength KW - 3D curves KW - parts contact KW - numerical model CR - Reference1 Shishoo, R. (2008). Textile advances in the automotive industry. The Textile Institute. Boca Raton Press: Woodhead, ISBN 9781845693312. CR - Reference2 Fung, W. (2000). Textiles in automotive engineering. Cambridge: Woodhead, ISBN 1855734931. 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