Browsing by Author "William Oxenham, Co-Chair"

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    Abrasion Characteristics of Ring-Spun and Open-End Yarns
    (2001-11-20) Jones, Jeremy; Pam Banks-Lee, Co-Chair; William Oxenham, Co-Chair; Jon P. Rust, Minor Representative, Member
    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 properties of open-end yarn to ring-spun yarn. Identical yarns of varying parameters including yarn type, yarn count, and twist multiple were produced from the same raw cotton stock to eliminate variability in raw material. These yarns were tested for abrasiveness on a Lawson-Hemphill CTT (Continuous Tension Transport) tester. The device 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. The wire 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 abrasion values 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 yarn counts were inconsistent. Open-end yarn abrasion values were only slightly greater than their ring-spun counterparts, contradicting the claims of the knitting industry.
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    Characterizing the Relationship of Tensile Properties and Pressure Profiles of Compression Bandages and Fabrics.
    (2014-03-21) Kwon, Cassandra Hyun; Kristin Barletta, Co-Chair; William Oxenham, Co-Chair; Katherine Carroll, Member; Edward Grant, Member
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    Evaluation of the Non-stop Tying-in Process
    (2019-05-06) Chaturvedi, Awantika; William Oxenham, Co-Chair; Abdel-fattah Seyam, Co-Chair; Yingjiao Xu, Member
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    Evolution of Emergent Technologies for Producing Nonwoven Fabrics for Air Filtration.
    (2016-08-16) Ou, Yingjie; William Oxenham, Co-Chair; Kristin Barletta, Co-Chair; Behnam Pourdeyhimi, Member; David Dickey, Member
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    Fiber Crimp And Crimp Stability In Nonwoven Fabric Processes
    (2000-11-10) Bauer-Kurz, Ina; William Oxenham, Co-Chair; Donald A. Shiffler, Co-Chair; Jeffrey W. Eischen, Member; Hawthorne Davis, Member
    In nonwovens, crimp characteristics of synthetic fibers are, along with finish, major contributors to processing efficiency, web cohesion, fabric bulk and bulk stability. However, the meaning of measurable crimp parameters and their influence on processing and fabric characteristics has not been quantified. The purpose of this study is to quantify the mechanical fiber behavior during crimp removal, and relate it to fundamental fiber properties, nonwoven fabric properties, and processibility in nonwoven equipment.Single fiber tensile tests in the crimp removal region have been performed on various fibers with the Textechno FAVIMAT and have also been monitored optically. Based on empirical evidence, a basic understanding of the physical crimp removal mechanism is obtained. A methodology is developed, to identify the true crimp removal region of the whole single fiber load-extension curve during a tensile test. A mechanical model accounting for the nonlinear load-deflection behavior during crimp removal is developed. According to this model, a logarithmic function can be used to describe the material behavior in the crimp node during crimp removal. This function is fit to experimental data and delivers two fitting parameters that characterize the shape of the experimental load-extension curve in the crimp region.The extracted characteristic crimp parameters are being evaluated in terms of fiber material characteristics, such as fiber type, crimp processing settings and carding performance during nonwoven production. A dependence of the shape of the crimp removal curve on crimping settings during crimp production is established. The characteristic crimp parameters are also correlated to the sequence of processing stages during nonwoven production and cylinder speed during carding.
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    Future Internet: Application of Internet of Things in Textile Staple Spinning Industry.
    (2019-03-26) Manglani, Hitesh; William Oxenham, Co-Chair; George Hodge, Co-Chair; Kristin Barletta, Member
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    Impact of New Technologies on Textile Supply Chain.
    (2018-03-27) Patil, Sanjaykumar Anantrao; Trevor Little, Co-Chair; William Oxenham, Co-Chair; Michael Kay, Member; George Hodge, Member
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    Impact of Process Parameters and nozzle Design on the Tensile Properties of Air-Jet Textured Yarns.
    (2010-12-17) Muthusami, Ramakrishna Pra; Pamela Banks-Lee, Co-Chair; William Oxenham, Co-Chair; Nancy Powell, Member
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    Short- and Long-Term Opportunities for US Textile Manufacturing.
    (2012-09-25) Hamilton, Brian John; William Oxenham, Co-Chair; Kristin Barletta, Co-Chair; George Hodge, Member; Yingjiao Xu, Member; Herle McGowan, Graduate School Representative
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    Structures/Yarns/Fabrics for Biomedical Applications
    (2017-10-30) Jindani, Rahim; Behnam Pourdeyhimi, Co-Chair; William Oxenham, Co-Chair; Elizabeth Loboa-Polefka, Minor; Kyle Mathews, Member