Seam elongation behavior of knitted fabrics has been studied along with the effect of various parameters like stitch type, sewing thread, fabric direction and fabric layers on the strain encountered by seams in knitted garments. Seam strain is assessed both in longitudinal and transverse directions under tensile loading. The experimental results show that these parameters affect seam elongation differently when stressed in longitudinal and transverse directions. Occurrence of seam cracking is observed in lockstitch when elongated in longitudinal direction. A phenomenon known as seam grinning is observed in all transverse direction loads. This paper also reports the effect of above parameters on the grinning behavior of seams at different elongation percentage (30% and 40%) of seams. It is found that over-lock stitch gives the maximum amount of seam grin. Fabric stitched in wales direction and fabric layers formed by joining two plain knitted fabrics give higher amount of seam grinning.

中文翻译：

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由于穿脱而导致的针织物的接缝伸长行为。

已经研究了针织物的接缝伸长行为以及各种参数（如线迹类型、缝纫线、织物方向和织物层）对针织服装接缝所遇到的应变的影响。在拉伸载荷下在纵向和横向上评估接缝应变。实验结果表明，当在纵向和横向方向上受力时，这些参数对接缝伸长率的影响不同。当纵向拉长时，在平缝中观察到接缝裂纹的发生。在所有横向载荷中都观察到了一种称为接缝磨削的现象。本文还报告了上述参数对不同接缝伸长率（30% 和 40%）下接缝的磨削行为的影响。发现包缝针迹提供最大量的接缝狰狞。沿纵行方向缝合的织物和通过连接两个平纹针织物形成的织物层提供更高的接缝皱褶量。