Volker Niebel

Automation in quality monitoring of fabrics and garment seams

Abstract By increasing fraction of automation technologies, it is necessary to implement capable quality monitoring systems along the textile productions chain. In general, the observation of process parameters or the implementation of vision systems has been investigated. Because product quality is strongly depended on visual appearance the development of feasible vision systems is strongly pushed by industry demands. However, the use of cameras and proper lighting conditions needs to fulfill complex product requirements. Whenever defects occur during manufacturing products, extra costs incur due to the efforts and the time spent to fix these defects. So, it is a goal for manufacturers to minimize these costs by trying to detect those defects before they happen. Therefore, manufacturers started to equip their industrial machines with automatic defect detection systems. One of the major defects that can occur in weaving industry is yarn irregularity. Yarn irregularity presents a problem because it reduces the economic value of the woven product. The following chapter presents current technologies and innovative developments in the field of vision-based fabric and seam inspection.

Tekstilde Fonksiyonel OPV-Folyolarının Birleştirme İşleminin İncelenmesi

Organic photovoltaic (OPV) can be used for power and light generation. Additionally OPV can be produced as thin plastic foils and be joined with textiles for many applications. The aim of this research study was finding an optimal joining process of foils on textiles. Therefore different joining methods were analysed with focus on the strength of the joining. The analysis of the results indicates that sewing with a long stitch length results in the highest strength. The stitch length is the most important factor for the seam strength. The adhesive bonding has a much lower strength than the sewing joints.