Design of Knitted Fabrics for Anti-Vibration Glove Liners
Kitapta bölümler > Mesleki Kitap · 2024
Yazarlar: Mirela Blaga, Cristina GROSU, Neculai-Eugen SEGHEDIN, Ana-Ramona CIOBANU, Arzu MARMARALI
The 8th International Symposium Technical Textile - Present and Future TTPF 2023, Iasi, Romani, Mesleki Kitap, Sciendo, B, Uluslararası, 2024, ss 72-79, Romanya, Iasi
Özet
<p>People are exposed to vibrations from a variety of sources during their daily activities or work. The energy absorbed from these sources is radiated in the form of vibrations, some of which can cause occupational diseases that negatively affect worker performance and productivity. Among other protective equipment, various models of anti-vibration gloves have been developed. They consist of one or more layers of textile materials, especially knitted fabrics, combined with various impact-resistant materials such as silicone protrusions, foam, nubs, or rubber cavities filled with compressed air. The most commonly used textile materials consist of cotton yarns for the inner layers, high-performance yarns for the outer layer, and various elastic yarns to improve elasticity in the wrist or backhand area of the glove. Protective products such as anti- vibration gloves must be designed to preserve dexterity and the sense of touch when handling vibrating objects. An important aspect of designing materials to protect against vibration is knowing their natural frequencies. Failure to do so can result in resonance, a dangerous phenomenon that occurs during the use phase when the excitation frequency of an external force overlaps with the natural frequency of the system. This paper presents the characterization of interlock knitted fabrics, which could be used as linings for anti-vibration gloves, based on their measured natural frequencies. The free vibration method was used to measure the natural frequencies of the knits developed for potential vibration isolation applications. Fabrics made of cotton and cotton-bamboo blends with three degrees of stitch density were produced on large-diameter circular knitting machines with gauge 18E. Knitwear made from 100% cotton yarns (Ring and Compact) showed the highest values of natural frequencies. Knits made of 100% bamboo and the bamboo-cotton blends had natural frequency values about 25% lower than those made of 100% cotton. An important parameter is fabric thickness. As the thickness increases, the recorded natural frequencies decrease, which means that thicker materials are recommended for the development of vibration damping products, and the results confirm this conclusion</p>