It is critical to investigate the technical performance of non-stitch joining methods that have become prevalent recently. While examining the bonding strength and the factors that affect the strength of adhesive bonding in textiles, a bending test device was designed and produced to investigate the repetitive bending deformation. The novel test device provides bending deformation and tensile stress to the fabrics at different angles with its oscillating motion. The effects of repetitive bending deformation on fabric strength and adhesive bonding strength were investigated. The experimental analysis showed that repetitive bending deformation did not have a significant effect on the tensile strength of cotton/polyester blend and cotton fabrics. However, strength loss was observed in polyester fabric and cotton/elastane blended fabric samples. Moreover, significant reductions in bonded textile joint strength were observed even in the case of much less repetitive bending exposure.