Controlling the Fiber Stress Distribution with Variable-Frequency Step Roll for Tunable Spun Yarn Structures
The dynamic regulation of fiber stress distribution in the yarn-forming triangle area is critical for controlling variable composite yarn structures, including siro and sirofil composite yarns. In this study, comparison analyses of the variable geometric structure and stress distribution during the...
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-07-01
|
| Series: | Polymers |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4360/15/13/2974 |
| _version_ | 1797590941521936384 |
|---|---|
| author | Zhiyong Peng Wei Li Ze Chen Pinxun Wang Ziyi Su Yue Sun Keshuai Liu Duo Xu Weilin Xu |
| author_facet | Zhiyong Peng Wei Li Ze Chen Pinxun Wang Ziyi Su Yue Sun Keshuai Liu Duo Xu Weilin Xu |
| author_sort | Zhiyong Peng |
| collection | DOAJ |
| description | The dynamic regulation of fiber stress distribution in the yarn-forming triangle area is critical for controlling variable composite yarn structures, including siro and sirofil composite yarns. In this study, comparison analyses of the variable geometric structure and stress distribution during the yarn-forming process, which involves step rolls with asymmetrical fiber control, have been carried out using ring-spinning technology. The geometric analyses show that partly staple fibers are continuously controlled while other fibers intermittently lack stress restraint, resulting in cyclically changed helical angles and wrapping density in the yarn-forming triangle area. The yarn structure model displayed that periodically distributed staple fibers occur in siro composite yarn, while sirofil composite yarn shows gradual periodic changes with uniform thickness variations, caused by cyclical changes in the stress distribution between filaments, and the strand altered the yarn-forming zone shapes from symmetrical to offset. Then, a systematic comparison of variable composite yarns with different frequencies (high, medium and low frequency) revealed that low-frequency step roll with wider grooves resulted in an intermittent output of staple fibers with less stress restraint, resulting in more pronounced structural variation in the siro and sirofil composite yarns with a slight yarn quality deterioration. |
| first_indexed | 2024-03-11T01:30:20Z |
| format | Article |
| id | doaj.art-695b78ebee8e49dbb16970ac8c9342f4 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-11T01:30:20Z |
| publishDate | 2023-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-695b78ebee8e49dbb16970ac8c9342f42023-11-18T17:22:52ZengMDPI AGPolymers2073-43602023-07-011513297410.3390/polym15132974Controlling the Fiber Stress Distribution with Variable-Frequency Step Roll for Tunable Spun Yarn StructuresZhiyong Peng0Wei Li1Ze Chen2Pinxun Wang3Ziyi Su4Yue Sun5Keshuai Liu6Duo Xu7Weilin Xu8State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan 430200, ChinaState Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan 430200, ChinaState Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan 430200, ChinaState Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan 430200, ChinaState Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan 430200, ChinaState Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan 430200, ChinaState Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan 430200, ChinaState Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan 430200, ChinaState Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan 430200, ChinaThe dynamic regulation of fiber stress distribution in the yarn-forming triangle area is critical for controlling variable composite yarn structures, including siro and sirofil composite yarns. In this study, comparison analyses of the variable geometric structure and stress distribution during the yarn-forming process, which involves step rolls with asymmetrical fiber control, have been carried out using ring-spinning technology. The geometric analyses show that partly staple fibers are continuously controlled while other fibers intermittently lack stress restraint, resulting in cyclically changed helical angles and wrapping density in the yarn-forming triangle area. The yarn structure model displayed that periodically distributed staple fibers occur in siro composite yarn, while sirofil composite yarn shows gradual periodic changes with uniform thickness variations, caused by cyclical changes in the stress distribution between filaments, and the strand altered the yarn-forming zone shapes from symmetrical to offset. Then, a systematic comparison of variable composite yarns with different frequencies (high, medium and low frequency) revealed that low-frequency step roll with wider grooves resulted in an intermittent output of staple fibers with less stress restraint, resulting in more pronounced structural variation in the siro and sirofil composite yarns with a slight yarn quality deterioration.https://www.mdpi.com/2073-4360/15/13/2974step rollfiber stressyarn-forming triangle areavariable structuresiro spinningsirofil spinning |
| spellingShingle | Zhiyong Peng Wei Li Ze Chen Pinxun Wang Ziyi Su Yue Sun Keshuai Liu Duo Xu Weilin Xu Controlling the Fiber Stress Distribution with Variable-Frequency Step Roll for Tunable Spun Yarn Structures Polymers step roll fiber stress yarn-forming triangle area variable structure siro spinning sirofil spinning |
| title | Controlling the Fiber Stress Distribution with Variable-Frequency Step Roll for Tunable Spun Yarn Structures |
| title_full | Controlling the Fiber Stress Distribution with Variable-Frequency Step Roll for Tunable Spun Yarn Structures |
| title_fullStr | Controlling the Fiber Stress Distribution with Variable-Frequency Step Roll for Tunable Spun Yarn Structures |
| title_full_unstemmed | Controlling the Fiber Stress Distribution with Variable-Frequency Step Roll for Tunable Spun Yarn Structures |
| title_short | Controlling the Fiber Stress Distribution with Variable-Frequency Step Roll for Tunable Spun Yarn Structures |
| title_sort | controlling the fiber stress distribution with variable frequency step roll for tunable spun yarn structures |
| topic | step roll fiber stress yarn-forming triangle area variable structure siro spinning sirofil spinning |
| url | https://www.mdpi.com/2073-4360/15/13/2974 |
| work_keys_str_mv | AT zhiyongpeng controllingthefiberstressdistributionwithvariablefrequencysteprollfortunablespunyarnstructures AT weili controllingthefiberstressdistributionwithvariablefrequencysteprollfortunablespunyarnstructures AT zechen controllingthefiberstressdistributionwithvariablefrequencysteprollfortunablespunyarnstructures AT pinxunwang controllingthefiberstressdistributionwithvariablefrequencysteprollfortunablespunyarnstructures AT ziyisu controllingthefiberstressdistributionwithvariablefrequencysteprollfortunablespunyarnstructures AT yuesun controllingthefiberstressdistributionwithvariablefrequencysteprollfortunablespunyarnstructures AT keshuailiu controllingthefiberstressdistributionwithvariablefrequencysteprollfortunablespunyarnstructures AT duoxu controllingthefiberstressdistributionwithvariablefrequencysteprollfortunablespunyarnstructures AT weilinxu controllingthefiberstressdistributionwithvariablefrequencysteprollfortunablespunyarnstructures |