4 – Stick-slip phenomena in textiles

Publisher Summary This chapter highlights that stick-slip is a commonly observed phenomenon in friction tests. It occurs when the speed of the bodies in contact oscillates between zero and some finite value. For Stick-Slip Phenomena (SSP) to occur, two basic conditions should be fulfilled: (1) The coefficient of friction is variable and (2) The system is flexible enough to enable a change in the speed of the sliding body. The chapter provides an overview of the basic information on SSP in textiles. It discusses the phenomenon and the behavior of textiles affected by it. Since the frictional resistance of textile fibers, yarns, and fabrics is influenced by many variables, the prediction of friction and SSP is usually very difficult. Accordingly, the models used to describe SSP are simple and only in principle represent the actual behavior. Friction is said to play both a positive and a negative role in processing and in the use of products. An example of negative role may be the sound emission, which is significantly connected with SSP. An understanding and control of SSP will provide a basis for controlling undesirable acoustics during the processing and use of textiles.

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