Pub Date : 2024-02-06DOI: 10.1177/00405175231223758
Xixi Qian, Yuyang Zhou, J. Ruan, Chongwen Yu
Tuft disentanglement involves the principal actions of opening and carding, which are essential processing in textile technology. In this article, tuft disentanglement is modeled as fiber withdrawal considering the fiber interactions within the tuft. Based on the reasonable tuft model, the kinematic constraints were constructed in the disentanglement considering the carding essence and fiber interactions. Combined with the dynamic equation, the state of the fibers can be solved as a linear complementarity problem due to the complementarity in the fiber interactions. The withdrawal forces verified the simulations, which capture the qualitative features of experiments. Also, the effect of the withdrawal parameters on disentanglement was studied. The simulation results showed that the withdrawal forces increased with increasing withdrawal velocities and decreasing gauge lengths. The simulation results are consistent with the experiments. The proposed computational framework can be extended for predicting the mechanical behaviors of other random fibrous materials involving fiber interactions.
{"title":"Withdrawal model for fiber motions in the tuft disentanglement","authors":"Xixi Qian, Yuyang Zhou, J. Ruan, Chongwen Yu","doi":"10.1177/00405175231223758","DOIUrl":"https://doi.org/10.1177/00405175231223758","url":null,"abstract":"Tuft disentanglement involves the principal actions of opening and carding, which are essential processing in textile technology. In this article, tuft disentanglement is modeled as fiber withdrawal considering the fiber interactions within the tuft. Based on the reasonable tuft model, the kinematic constraints were constructed in the disentanglement considering the carding essence and fiber interactions. Combined with the dynamic equation, the state of the fibers can be solved as a linear complementarity problem due to the complementarity in the fiber interactions. The withdrawal forces verified the simulations, which capture the qualitative features of experiments. Also, the effect of the withdrawal parameters on disentanglement was studied. The simulation results showed that the withdrawal forces increased with increasing withdrawal velocities and decreasing gauge lengths. The simulation results are consistent with the experiments. The proposed computational framework can be extended for predicting the mechanical behaviors of other random fibrous materials involving fiber interactions.","PeriodicalId":505915,"journal":{"name":"Textile Research Journal","volume":"313 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139858477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The synthetic filament winder drives the filament through the traverse mechanism with rotary wings so that it can complete the transverse reciprocating motion when it is continuously wound and achieve the spiral distribution on the cylindrical package. When the existing traverse mechanism leads the filament, the filament is easy to oscillate and breaks away from the control of the rotary blade during the reversing process at both ends of the package, which directly affects its forming on the package. In this study, firstly, the filament leading process is analyzed from the filament leading principle of the traverse mechanism with rotary wings and the key points of the profile are identified. Secondly, we applied parameter constraints of key points and developed a blade profile that can not only meet the demand of filament reversing but also improve the above abnormal phenomena by curve-fitting, so that the blade can continuously and stably lead and control the filament during the reversing process. Finally, through the actual winding experiment, we contrasted the state of the filament leading process of the original blades with the improved blades, and verified the improvement effect. This study provides a design basis and optimization reference for realizing a smooth and stable relay between the filament and blades.
{"title":"Improvement design of blade profile on rotary wings of winder for synthetic filament: Analysis and experiment","authors":"Qinglong Liu, Shujia Li, Jincan Wang, Zihang Chen, Yongxing Wang, Hongbo Shan, KeHan Wu","doi":"10.1177/00405175241226663","DOIUrl":"https://doi.org/10.1177/00405175241226663","url":null,"abstract":"The synthetic filament winder drives the filament through the traverse mechanism with rotary wings so that it can complete the transverse reciprocating motion when it is continuously wound and achieve the spiral distribution on the cylindrical package. When the existing traverse mechanism leads the filament, the filament is easy to oscillate and breaks away from the control of the rotary blade during the reversing process at both ends of the package, which directly affects its forming on the package. In this study, firstly, the filament leading process is analyzed from the filament leading principle of the traverse mechanism with rotary wings and the key points of the profile are identified. Secondly, we applied parameter constraints of key points and developed a blade profile that can not only meet the demand of filament reversing but also improve the above abnormal phenomena by curve-fitting, so that the blade can continuously and stably lead and control the filament during the reversing process. Finally, through the actual winding experiment, we contrasted the state of the filament leading process of the original blades with the improved blades, and verified the improvement effect. This study provides a design basis and optimization reference for realizing a smooth and stable relay between the filament and blades.","PeriodicalId":505915,"journal":{"name":"Textile Research Journal","volume":"13 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139859322","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This paper explores the sensing performance displayed by warp-knitted strain sensors under biaxial stretching. These sensors were knitted using silver-plated nylon to be interlooped on a tricot warp-knitting machine. Eight types of warp-knitted sensing fabrics with different loop parameters were prepared and, afterward, electro-mechanical tests were conducted on a biaxial tensile testing machine. These specimens offered similar ground structures but differed in conductive yarn configuration in terms of linear density, number of underlapping wales, open/closed loop type, and guide-bar lapping sequence. Experimental results showed that the loop parameters significantly played a fundamental role in determining sensing performance. It is therefore possible to improve the sensing performance of warp-knitted sensors and engineer them by differing the loop parameters based on certain applications.
{"title":"Warp-knitted strain sensors: impact of loop parameters on sensing performance under biaxial stretching","authors":"Xinxin Li, Binhong Zhou, Meiling Tian, Xiangshuai Li, Xiaohong Qin","doi":"10.1177/00405175241226490","DOIUrl":"https://doi.org/10.1177/00405175241226490","url":null,"abstract":"This paper explores the sensing performance displayed by warp-knitted strain sensors under biaxial stretching. These sensors were knitted using silver-plated nylon to be interlooped on a tricot warp-knitting machine. Eight types of warp-knitted sensing fabrics with different loop parameters were prepared and, afterward, electro-mechanical tests were conducted on a biaxial tensile testing machine. These specimens offered similar ground structures but differed in conductive yarn configuration in terms of linear density, number of underlapping wales, open/closed loop type, and guide-bar lapping sequence. Experimental results showed that the loop parameters significantly played a fundamental role in determining sensing performance. It is therefore possible to improve the sensing performance of warp-knitted sensors and engineer them by differing the loop parameters based on certain applications.","PeriodicalId":505915,"journal":{"name":"Textile Research Journal","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139861286","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-02-05DOI: 10.1177/00405175231222933
Li Tu, Mingrui Guo, Jingan Wang, Weidong Gao
The traditional tension control method with tension as the control target is to uniformly control multiple warp beams and has low control accuracy. Simultaneously, it is difficult to install an independent sensor for a single warp beam to achieve a closed-loop control, due to the space limitation. Combined with the theoretical model, this paper proposes a novel method to achieve the closed-loop unwinding tension control of warp beams by taking the unwinding length as the control target and using the self-developed turns measuring device. First, the dynamic model between different factors and unwinding tension was established in this study. Furthermore, the influence of unwinding radius, unwinding speed and winding density on the tension was investigated to clarify the fluctuation mechanism. Based on these, simulation experiments were conducted for verifying the control effect of the proposed method. The results showed that the proposed single warp beam unwinding tension control method can achieve constant tension throughout the unwinding process, which is superior to the empirical open-loop control method that adjusts the tension according to the linear proportional change of the braking torque. Meanwhile, it has the similar control effect as the ideal closed-loop tension control method, maintaining stability under different reference tensions and disturbances. In addition, the proposed multiple warp beams unwinding tension control method also outperformed the traditional unified tension control method. Our measuring device can be easily installed on the single warp beam for control, resulting in consistent tension between multiple warp beams. Therefore, the proposed methods have a certain control effect and application value.
{"title":"Dynamic tension control for warp beams on sizing machine based on unwinding length monitoring","authors":"Li Tu, Mingrui Guo, Jingan Wang, Weidong Gao","doi":"10.1177/00405175231222933","DOIUrl":"https://doi.org/10.1177/00405175231222933","url":null,"abstract":"The traditional tension control method with tension as the control target is to uniformly control multiple warp beams and has low control accuracy. Simultaneously, it is difficult to install an independent sensor for a single warp beam to achieve a closed-loop control, due to the space limitation. Combined with the theoretical model, this paper proposes a novel method to achieve the closed-loop unwinding tension control of warp beams by taking the unwinding length as the control target and using the self-developed turns measuring device. First, the dynamic model between different factors and unwinding tension was established in this study. Furthermore, the influence of unwinding radius, unwinding speed and winding density on the tension was investigated to clarify the fluctuation mechanism. Based on these, simulation experiments were conducted for verifying the control effect of the proposed method. The results showed that the proposed single warp beam unwinding tension control method can achieve constant tension throughout the unwinding process, which is superior to the empirical open-loop control method that adjusts the tension according to the linear proportional change of the braking torque. Meanwhile, it has the similar control effect as the ideal closed-loop tension control method, maintaining stability under different reference tensions and disturbances. In addition, the proposed multiple warp beams unwinding tension control method also outperformed the traditional unified tension control method. Our measuring device can be easily installed on the single warp beam for control, resulting in consistent tension between multiple warp beams. Therefore, the proposed methods have a certain control effect and application value.","PeriodicalId":505915,"journal":{"name":"Textile Research Journal","volume":"41 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139806019","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-02-05DOI: 10.1177/00405175231222933
Li Tu, Mingrui Guo, Jingan Wang, Weidong Gao
The traditional tension control method with tension as the control target is to uniformly control multiple warp beams and has low control accuracy. Simultaneously, it is difficult to install an independent sensor for a single warp beam to achieve a closed-loop control, due to the space limitation. Combined with the theoretical model, this paper proposes a novel method to achieve the closed-loop unwinding tension control of warp beams by taking the unwinding length as the control target and using the self-developed turns measuring device. First, the dynamic model between different factors and unwinding tension was established in this study. Furthermore, the influence of unwinding radius, unwinding speed and winding density on the tension was investigated to clarify the fluctuation mechanism. Based on these, simulation experiments were conducted for verifying the control effect of the proposed method. The results showed that the proposed single warp beam unwinding tension control method can achieve constant tension throughout the unwinding process, which is superior to the empirical open-loop control method that adjusts the tension according to the linear proportional change of the braking torque. Meanwhile, it has the similar control effect as the ideal closed-loop tension control method, maintaining stability under different reference tensions and disturbances. In addition, the proposed multiple warp beams unwinding tension control method also outperformed the traditional unified tension control method. Our measuring device can be easily installed on the single warp beam for control, resulting in consistent tension between multiple warp beams. Therefore, the proposed methods have a certain control effect and application value.
{"title":"Dynamic tension control for warp beams on sizing machine based on unwinding length monitoring","authors":"Li Tu, Mingrui Guo, Jingan Wang, Weidong Gao","doi":"10.1177/00405175231222933","DOIUrl":"https://doi.org/10.1177/00405175231222933","url":null,"abstract":"The traditional tension control method with tension as the control target is to uniformly control multiple warp beams and has low control accuracy. Simultaneously, it is difficult to install an independent sensor for a single warp beam to achieve a closed-loop control, due to the space limitation. Combined with the theoretical model, this paper proposes a novel method to achieve the closed-loop unwinding tension control of warp beams by taking the unwinding length as the control target and using the self-developed turns measuring device. First, the dynamic model between different factors and unwinding tension was established in this study. Furthermore, the influence of unwinding radius, unwinding speed and winding density on the tension was investigated to clarify the fluctuation mechanism. Based on these, simulation experiments were conducted for verifying the control effect of the proposed method. The results showed that the proposed single warp beam unwinding tension control method can achieve constant tension throughout the unwinding process, which is superior to the empirical open-loop control method that adjusts the tension according to the linear proportional change of the braking torque. Meanwhile, it has the similar control effect as the ideal closed-loop tension control method, maintaining stability under different reference tensions and disturbances. In addition, the proposed multiple warp beams unwinding tension control method also outperformed the traditional unified tension control method. Our measuring device can be easily installed on the single warp beam for control, resulting in consistent tension between multiple warp beams. Therefore, the proposed methods have a certain control effect and application value.","PeriodicalId":505915,"journal":{"name":"Textile Research Journal","volume":"88 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139865557","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-01-05DOI: 10.1177/00405175231221598
Yajie Gao, Xiaogang Chen
Auxetic textiles, as one of the synthetic auxetic materials, have attracted much research interest in recent years due to their material adaptability and structural variability. Based on the experimental results reported in our previous papers, the auxetic behavior of woven fabrics was further investigated and the key factors affecting weaving the fabrics were studied systematically by using a combination of experiments and numerical simulation. In this paper, different types of woven fabrics were compared based on finite element analysis and the key parameters influencing the Poisson’s ratio were analyzed, including the helical auxetic yarn (HAY) arrangements, fabric density, helical angles of the HAY, thickness of the HAY, weave structures, warp yarn types and loading directions. The auxeticity of the fabrics was first analyzed out-of-plane and in-plane. The results showed that the maximum negative Poisson’s ratio can be achieved as −3.57 out-of-plane and −1.17 in-plane. The out-of-plane auxeticity of the fabric is notable, which could provide a reference for industry and researchers for potential applications.
{"title":"Finite element analysis study of parameters influencing the Poisson’s ratio of auxetic woven fabrics","authors":"Yajie Gao, Xiaogang Chen","doi":"10.1177/00405175231221598","DOIUrl":"https://doi.org/10.1177/00405175231221598","url":null,"abstract":"Auxetic textiles, as one of the synthetic auxetic materials, have attracted much research interest in recent years due to their material adaptability and structural variability. Based on the experimental results reported in our previous papers, the auxetic behavior of woven fabrics was further investigated and the key factors affecting weaving the fabrics were studied systematically by using a combination of experiments and numerical simulation. In this paper, different types of woven fabrics were compared based on finite element analysis and the key parameters influencing the Poisson’s ratio were analyzed, including the helical auxetic yarn (HAY) arrangements, fabric density, helical angles of the HAY, thickness of the HAY, weave structures, warp yarn types and loading directions. The auxeticity of the fabrics was first analyzed out-of-plane and in-plane. The results showed that the maximum negative Poisson’s ratio can be achieved as −3.57 out-of-plane and −1.17 in-plane. The out-of-plane auxeticity of the fabric is notable, which could provide a reference for industry and researchers for potential applications.","PeriodicalId":505915,"journal":{"name":"Textile Research Journal","volume":"27 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139384089","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-01-05DOI: 10.1177/00405175231203398
Junli Chen, Xiaojing Wen, Xiang Liu, Z. Du
In this paper, the tensile models of the negative Poisson’s ratio yarn with incompressible component yarn and compressible component yarn are constructed. The theoretical Poisson’s ratio curves exhibit the same trend as the experiment. Compared with the theoretical model of incompressible component yarns, a 14% reduction was found in the maximum negative Poisson’s ratio value in the compressible component yarns model. Additionally, the modified theoretical model was established to improve further the accuracy of the model. Both the variation trend and Poisson’s ratio value of the theoretical curves are highly consistent with the experimental results, and the average difference rate of the maximum Poisson’s ratio value is below 10%, which proves the effectiveness of the corrected theoretical model in predicting the auxetic behavior. Our theoretical model not only considers the initial helical path of the wrap yarn could not be completely horizontally straightened when it is just subject to an axial tensile force but also takes the influence of component yarn sectional shape changes into account. The as-constructed theoretical model is more realistic and can guide the design of negative Poisson’s ratio yarn and optimize the theoretical modeling method.
{"title":"Tensile theoretical modeling and auxetic behavior analyzing of negative Poisson’s ratio yarn","authors":"Junli Chen, Xiaojing Wen, Xiang Liu, Z. Du","doi":"10.1177/00405175231203398","DOIUrl":"https://doi.org/10.1177/00405175231203398","url":null,"abstract":"In this paper, the tensile models of the negative Poisson’s ratio yarn with incompressible component yarn and compressible component yarn are constructed. The theoretical Poisson’s ratio curves exhibit the same trend as the experiment. Compared with the theoretical model of incompressible component yarns, a 14% reduction was found in the maximum negative Poisson’s ratio value in the compressible component yarns model. Additionally, the modified theoretical model was established to improve further the accuracy of the model. Both the variation trend and Poisson’s ratio value of the theoretical curves are highly consistent with the experimental results, and the average difference rate of the maximum Poisson’s ratio value is below 10%, which proves the effectiveness of the corrected theoretical model in predicting the auxetic behavior. Our theoretical model not only considers the initial helical path of the wrap yarn could not be completely horizontally straightened when it is just subject to an axial tensile force but also takes the influence of component yarn sectional shape changes into account. The as-constructed theoretical model is more realistic and can guide the design of negative Poisson’s ratio yarn and optimize the theoretical modeling method.","PeriodicalId":505915,"journal":{"name":"Textile Research Journal","volume":"7 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139381085","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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