Browsing by Subject "Friction -- Measurement"
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Item Mechanical and hand-related properties of nonwoven substrates(Texas Tech University, 2003-12) Umrani, Anand SureshNonwoven industry is a burgeoning sector within textiles and apparel manufacturing. The growth of this sector is primarily due to the high-end products that can be developed using different nonwoven production methods. In addition, the quality and the end-use applications of the nonwoven products fuel the growth of the industry. As the quality of nonwovens influences the survival and the growth of the industry, it is important to have objective test methods to evaluate the quality related mechanical and "hand" properties of nonwovens. This thesis work endeavors to develop simple and scientifically acceptable test methods to evaluate the quality related properties of nonwoven fabrics. Structural characteristics of nonwoven fabrics demand the development of new standards and testing methods that are different from those used for regular textiles. There are two important mechanical properties: (1) friction and (2) compression that influence the quality and the hand of nonwovens. There is a dearth of literature on the evaluation of friction and compressional properties of nonwovens. Efforts were made in this thesis to systematically characterize the friction and compressional properties of nonwovens. A simple sliding friction apparatus has been used to derive a novel normalized friction factor. The normalized friction factor has been used to evaluate the surface mechanical properties of a set of needlepunched nonwovens. Results on the friction and compressional properties of different nonwoven substrates are presented in individual chapters of this thesis. It is hoped that the research findings and the methodology adopted will serve as a useful tool for the quality evaluation of nonwoven substrates..