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Abrasion CHaracteristics of Ring Spun and Open End Yarns | Yarn | Wear

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ABSTRACT Jones, Jeremy. Abrasion Characteristics of Ring-Spun and Open-End Yarns. (Under the direction of Dr. Pam Banks-Lee and Dr. William Oxenham.) In the early 1980s, widespread claims in the knitting industry suggesting that the use of open-end yarns significantly increased the wear of mechanical components, especially knitting needles. Since then, many studies have attempted to explain this phenomenon and have yielded widely varying results. A study was conducted to compare the yarn propert
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   ABSTRACTJones, Jeremy. Abrasion Characteristics of Ring-Spun and Open-End Yarns. (Under thedirection of Dr. Pam Banks-Lee and Dr. William Oxenham.)In the early 1980s, widespread claims in the knitting industry suggesting that the use of open-end yarns significantly increased the wear of mechanical components, especially knittingneedles. Since then, many studies have attempted to explain this phenomenon and have yieldedwidely varying results.A study was conducted to compare the yarn properties of open-end yarn to ring-spun yarn.Identical yarns of varying parameters including yarn type, yarn count, and twist multiple wereproduced from the same raw cotton stock to eliminate variability in raw material. These yarns weretested for abrasiveness on a Lawson-Hemphill CTT (Continuous Tension Transport) tester. Thedevice passes the yarn over a wire and records the length of yarn required to sever the wire.For this study the CTT was encoded to abrade a fixed length of yarn over the wire. Thewire was then observed with both a Hitcahi ESEM (Environmental Scanning Electron Microscope)and a digital imaging microscope. The resultant images were examined for attrition and the abrasionvalues were evaluated using statistical analysis.It was confirmed that an increase in yarn count corresponded to a decrease in abrasion.Twist multiple had a noticeable effect on abrasion although the trends between yarn types, and yarncounts were inconsistent. Open-end yarn abrasion values were only slightly greater than their ring-spun counterparts, contradicting the claims of the knitting industry.  iiDEDICATIONThis thesis is dedicated to my father Chris, who is always there to support me, my motherAnita who selflessly devotes her life to helping children, and my wonderful new wife Jessica whotruly inspires me to follow my dreams.  iiiBIOGRAPHYJeremy Jones was born in Cumberland, Maryland on December 27, 1975. He was raisedin Clayton, NC and graduated from W. G. Enloe High School in 1993. He entered North CarolinaState University and received a Bachelor of Science degree with a major in Textile Material Sciencein May 1999.In August 1999, the author entered graduate school at the North Carolina State University’sCollege of Textiles to pursue a Master of Science degree in Textile Management and Technology.
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