Pub Date : 2024-06-16DOI: 10.1177/00405175241258797
Pu Zhao, Peng Xu
The polydopamine-cross-linked serine protease anti-felting process of wool fibers was optimized by response surface methodology to prepare wool fabrics with a low tendency to shrink and high strength. The effects of dopamine substrate concentration, serine protease substrate concentration, and reaction time on the physical properties and surface color of wool were investigated. The experimental data were fitted and analyzed by the polynomial regression model, and the predicted area shrinkage and breaking strength response of wool fabric were obtained. The results were analyzed by variance analysis to determine the important parameters for optimization. Wool fabrics were prepared under the conditions of dopamine substrate concentration of 0.834 g/l, serine protease substrate concentration of 2.5 g/l, and reaction world of 127 min. Scanning electron microscopy images showed that the surface of wool fibers was covered with a large amount of polydopamine and some edge scales were passivated. After 20 cycles of washing, the shrinkage area of wool fabric is from 1.49–7.25%, with good durability. In addition, X-ray photoelectron spectroscopy, and X-ray diffraction analysis results showed that the behavior of polydopamine-coated fibers prevented the excessive hydrolysis of scales by serine protease, and the crystallization index and solubility in alkaline solution increased.
采用响应面方法优化了多巴胺交联丝氨酸蛋白酶抗羊毛纤维起绒工艺，制备出了低收缩倾向和高强度的羊毛织物。研究了多巴胺底物浓度、丝氨酸蛋白酶底物浓度和反应时间对羊毛物理性能和表面颜色的影响。采用多项式回归模型对实验数据进行拟合和分析，得出羊毛织物的预测面积收缩率和断裂强度响应。通过方差分析确定了优化的重要参数。在多巴胺底物浓度为 0.834 g/l、丝氨酸蛋白酶底物浓度为 2.5 g/l、反应时间为 127 min 的条件下制备了羊毛织物。扫描电子显微镜图像显示，羊毛纤维表面覆盖了大量的多巴胺，部分边缘鳞片被钝化。经过 20 次洗涤后，羊毛织物的缩水率为 1.49%-7.25%，具有良好的耐久性。此外，X 射线光电子能谱和 X 射线衍射分析结果表明，聚多巴胺涂层纤维的行为阻止了丝氨酸蛋白酶对鳞片的过度水解，结晶指数和在碱性溶液中的溶解度也有所提高。
{"title":"Analyzing the effect of polydopamine cross-linked serine protease on anti-shrinkage finishing of wool using response surface methodology design","authors":"Pu Zhao, Peng Xu","doi":"10.1177/00405175241258797","DOIUrl":"https://doi.org/10.1177/00405175241258797","url":null,"abstract":"The polydopamine-cross-linked serine protease anti-felting process of wool fibers was optimized by response surface methodology to prepare wool fabrics with a low tendency to shrink and high strength. The effects of dopamine substrate concentration, serine protease substrate concentration, and reaction time on the physical properties and surface color of wool were investigated. The experimental data were fitted and analyzed by the polynomial regression model, and the predicted area shrinkage and breaking strength response of wool fabric were obtained. The results were analyzed by variance analysis to determine the important parameters for optimization. Wool fabrics were prepared under the conditions of dopamine substrate concentration of 0.834 g/l, serine protease substrate concentration of 2.5 g/l, and reaction world of 127 min. Scanning electron microscopy images showed that the surface of wool fibers was covered with a large amount of polydopamine and some edge scales were passivated. After 20 cycles of washing, the shrinkage area of wool fabric is from 1.49–7.25%, with good durability. In addition, X-ray photoelectron spectroscopy, and X-ray diffraction analysis results showed that the behavior of polydopamine-coated fibers prevented the excessive hydrolysis of scales by serine protease, and the crystallization index and solubility in alkaline solution increased.","PeriodicalId":505915,"journal":{"name":"Textile Research Journal","volume":"1 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141335453","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 : 2024-06-11DOI: 10.1177/00405175241259204
Sheng Hu, Jiaqi Zhang
To solve the problem of false positives and false negatives in the manual detection of fabric sewing breaks, a method of fabric sewing break detection based on the U-Net network is proposed. By detecting the adjacent distance between the characteristic contours of adjacent sewing stitches, the distribution uniformity of sewing stitches in sewing patterns is calculated, and the abnormal detection and traceability of fabric sewing broken threads are realized. First, the U-Net network sewing feature extraction model was trained using sewing images and their corresponding stitching feature annotation maps. Then, the trained network model was used to process sewing image samples to obtain binary stitching feature maps. Second, the stitching feature maps were processed using a closing operation to eliminate residual image noise. On this basis, the template matching algorithm was used to extract the stitching feature contours. Finally, according to the distance between adjacent feature contours, the fabric sewing break detection and abnormality tracing model was constructed. The model is validated by examples, and the results show that the abnormal samples of stitching lines are detected, and the corresponding break positions are given. The overall detection accuracy of the model is 95.75%, indicating that the constructed fabric sewing break detection model is effective.
{"title":"Modeling of fabric sewing break detection based on U-Net network","authors":"Sheng Hu, Jiaqi Zhang","doi":"10.1177/00405175241259204","DOIUrl":"https://doi.org/10.1177/00405175241259204","url":null,"abstract":"To solve the problem of false positives and false negatives in the manual detection of fabric sewing breaks, a method of fabric sewing break detection based on the U-Net network is proposed. By detecting the adjacent distance between the characteristic contours of adjacent sewing stitches, the distribution uniformity of sewing stitches in sewing patterns is calculated, and the abnormal detection and traceability of fabric sewing broken threads are realized. First, the U-Net network sewing feature extraction model was trained using sewing images and their corresponding stitching feature annotation maps. Then, the trained network model was used to process sewing image samples to obtain binary stitching feature maps. Second, the stitching feature maps were processed using a closing operation to eliminate residual image noise. On this basis, the template matching algorithm was used to extract the stitching feature contours. Finally, according to the distance between adjacent feature contours, the fabric sewing break detection and abnormality tracing model was constructed. The model is validated by examples, and the results show that the abnormal samples of stitching lines are detected, and the corresponding break positions are given. The overall detection accuracy of the model is 95.75%, indicating that the constructed fabric sewing break detection model is effective.","PeriodicalId":505915,"journal":{"name":"Textile Research Journal","volume":"55 23","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141358130","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 : 2024-06-11DOI: 10.1177/00405175241259505
Aiqiong Wang, Jianxiong Li, Xiaoming Zhao
The development of intelligent and portable electrics necessitates the creation of an enhanced electromagnetic absorption and broad bandwidth microwave absorber. The synthesis of nano cobalt ferrite (CoFe2O4; CFO) combined with hollow carbonized kapok fiber by the Sol-Gel method and annealing process is a promising approach. The microwave absorption of carbonized kapok fiber/CFO was enhanced, and the bandwidth broadened due to the dielectric loss microwave absorber carbonized kapok fiber synergizing with the magnetic loss microwave absorber CFO. The results demonstrated that the minimal reflection loss of carbonized kapok fiber/CFO-6 was −52.2 dB at 8.56 GHz, with a thickness of 3.37 mm, and the broadest effective absorbing bandwidth was 6.2 GHz, with a thickness of 2.31 mm. The simulation results, which were obtained using the CST MWS software, exhibited a high degree of agreement with those obtained from the experimental measurements. The strategy offers a prospective method for the preparation of enhanced absorption and broad bandwidth microwave absorbers.
{"title":"A hollow carbonized kapok fiber/nano CoFe2O4 composite for broad bandwidth and enhanced microwave absorber","authors":"Aiqiong Wang, Jianxiong Li, Xiaoming Zhao","doi":"10.1177/00405175241259505","DOIUrl":"https://doi.org/10.1177/00405175241259505","url":null,"abstract":"The development of intelligent and portable electrics necessitates the creation of an enhanced electromagnetic absorption and broad bandwidth microwave absorber. The synthesis of nano cobalt ferrite (CoFe2O4; CFO) combined with hollow carbonized kapok fiber by the Sol-Gel method and annealing process is a promising approach. The microwave absorption of carbonized kapok fiber/CFO was enhanced, and the bandwidth broadened due to the dielectric loss microwave absorber carbonized kapok fiber synergizing with the magnetic loss microwave absorber CFO. The results demonstrated that the minimal reflection loss of carbonized kapok fiber/CFO-6 was −52.2 dB at 8.56 GHz, with a thickness of 3.37 mm, and the broadest effective absorbing bandwidth was 6.2 GHz, with a thickness of 2.31 mm. The simulation results, which were obtained using the CST MWS software, exhibited a high degree of agreement with those obtained from the experimental measurements. The strategy offers a prospective method for the preparation of enhanced absorption and broad bandwidth microwave absorbers.","PeriodicalId":505915,"journal":{"name":"Textile Research Journal","volume":"97 22","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141359404","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 : 2024-06-11DOI: 10.1177/00405175241258173
Michael Sturm, A. Roselli, Niklas von Weymarn, Birgit Kosan, Jussi Helminen, I. Kilpeläinen
In the research of new solvents for cellulose dissolution for textile fiber production, some ionic liquids offer high dissolving capacities making them attractive solvents for lyocell processes. One especially interesting group is superbase carboxylates. However, despite their excellent pulp dissolving abilities and good spinnability properties in a lyocell process, they have been lacking hydrolytic stability, which hinders their recyclability. In this article, a new type of superbase-based ionic liquid, [MTBNH][AcO], is aimed to provide higher hydrolytic stability than its structural relative predecessors. For evaluation of the hydrolysis behavior of [MTBNH][AcO], we have tested the ionic liquid in two sets of recycling experiments. The “blank-experiments” were applied to investigate hydrolytic behavior without the presence of pulp. These values were compared with the results from spinning trials with pulp. It was found that this new ionic liquid is not only more stable than its predecessor [MTBDH][AcO] in terms of hydrolysis but can also dissolve and spin cellulose at lower temperatures. The spun fibers were tested for their textile-physical properties and their performance was comparable to other lyocell fibers.
{"title":"Improved recyclability of the superbase ionic liquid [MTBNH][AcO] used in the lyocell fiber spinning process","authors":"Michael Sturm, A. Roselli, Niklas von Weymarn, Birgit Kosan, Jussi Helminen, I. Kilpeläinen","doi":"10.1177/00405175241258173","DOIUrl":"https://doi.org/10.1177/00405175241258173","url":null,"abstract":"In the research of new solvents for cellulose dissolution for textile fiber production, some ionic liquids offer high dissolving capacities making them attractive solvents for lyocell processes. One especially interesting group is superbase carboxylates. However, despite their excellent pulp dissolving abilities and good spinnability properties in a lyocell process, they have been lacking hydrolytic stability, which hinders their recyclability. In this article, a new type of superbase-based ionic liquid, [MTBNH][AcO], is aimed to provide higher hydrolytic stability than its structural relative predecessors. For evaluation of the hydrolysis behavior of [MTBNH][AcO], we have tested the ionic liquid in two sets of recycling experiments. The “blank-experiments” were applied to investigate hydrolytic behavior without the presence of pulp. These values were compared with the results from spinning trials with pulp. It was found that this new ionic liquid is not only more stable than its predecessor [MTBDH][AcO] in terms of hydrolysis but can also dissolve and spin cellulose at lower temperatures. The spun fibers were tested for their textile-physical properties and their performance was comparable to other lyocell fibers.","PeriodicalId":505915,"journal":{"name":"Textile Research Journal","volume":"6 25","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141356573","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 : 2024-06-06DOI: 10.1177/00405175241246115
D. Rimaud, Ahmed El-Aouadi, P. Calmels, R. Convert
The main objective of this study was to compare the interface pressure applied by four different compression bandages (two elastic, one inelastic, and one multi-layer system), in various static and dynamic conditions and over time. The second objective was to compare their Static Stiffness Index and their Dynamic Stiffness Index. The compression bandages were applied on 20 legs of healthy females. Interface pressure was measured at two different points of the leg (ankle and calf), at rest in two positions (standing, supine), and during walking sequences. Interface pressure depends mainly on the mechanical properties of compression devices and on the subject morphology. Both elastic and multilayer compression devices exhibited a pressure gradient loss from the ankle to the calf. Over time, pressure loss was higher for inelastic compression bandages ( p < 0.001) than for elastic and multilayer compression systems. Pressure variation from a supine to a standing position, and during walking, was higher for both inelastic bandage and multilayer system, than for elastic bandages ( p < 0.01) whatever the measurement time and the measurement point. For all compression devices, pressure variation during walking at the ankle was about 25% of the pressure variation when switching from a supine to a standing position. These results provide a better understanding of the behavior of various bandage types. The pressure variations measured during walking are lower than those obtained when the subject switches from a supine to a standing position. This study suggests that the efficacy of compression bandages relies on the interface pressure that they exert on the legs, and the capacity of the patient to walk, which activates calf muscle.
{"title":"Effects of bandage types on interface pressure in static positions and during walking","authors":"D. Rimaud, Ahmed El-Aouadi, P. Calmels, R. Convert","doi":"10.1177/00405175241246115","DOIUrl":"https://doi.org/10.1177/00405175241246115","url":null,"abstract":"The main objective of this study was to compare the interface pressure applied by four different compression bandages (two elastic, one inelastic, and one multi-layer system), in various static and dynamic conditions and over time. The second objective was to compare their Static Stiffness Index and their Dynamic Stiffness Index. The compression bandages were applied on 20 legs of healthy females. Interface pressure was measured at two different points of the leg (ankle and calf), at rest in two positions (standing, supine), and during walking sequences. Interface pressure depends mainly on the mechanical properties of compression devices and on the subject morphology. Both elastic and multilayer compression devices exhibited a pressure gradient loss from the ankle to the calf. Over time, pressure loss was higher for inelastic compression bandages ( p < 0.001) than for elastic and multilayer compression systems. Pressure variation from a supine to a standing position, and during walking, was higher for both inelastic bandage and multilayer system, than for elastic bandages ( p < 0.01) whatever the measurement time and the measurement point. For all compression devices, pressure variation during walking at the ankle was about 25% of the pressure variation when switching from a supine to a standing position. These results provide a better understanding of the behavior of various bandage types. The pressure variations measured during walking are lower than those obtained when the subject switches from a supine to a standing position. This study suggests that the efficacy of compression bandages relies on the interface pressure that they exert on the legs, and the capacity of the patient to walk, which activates calf muscle.","PeriodicalId":505915,"journal":{"name":"Textile Research Journal","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141378033","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}
Shear thickening fluid (STF) for personal stab-resistant clothing has been consistently discussed. However, it is not clear whether STF in STF–fabric composite materials undergoes thickening under normal loads, and to what extent. In this study, the yarn pullout test and the knife-stab test in the quasistatic mode were used to establish the enhancement effect of STF, owing to the dominant thickening mechanism. The results of pullout–in tests for STF show that the thickening effort of STF becomes stronger with increasing speed. There is an observable increase for the pullout–in force. The addition of STF can slightly improve the yarn pullout force and peak stab force for STF-treated fabric at low velocities, owing to friction enhancement. More importantly, at higher speeds, the peak pullout force of yarn was increased to 28.9 N, which increased by about 140% compared with low velocities. The peak stab forces increased by about 80% compared with low stab speeds. It is affirmed that the thickening effect of STF under normal loads plays a dominant role in enhancing STF–fabric composite materials.
{"title":"Thickening effect of shear thickening fluid under normal loading to improve stab resistance of shear thickening fluid–fabric composite","authors":"Lijuan Wang, Qi Zhao, Xingxing Hu, Qingping Liu, Kejing Yu","doi":"10.1177/00405175241256406","DOIUrl":"https://doi.org/10.1177/00405175241256406","url":null,"abstract":"Shear thickening fluid (STF) for personal stab-resistant clothing has been consistently discussed. However, it is not clear whether STF in STF–fabric composite materials undergoes thickening under normal loads, and to what extent. In this study, the yarn pullout test and the knife-stab test in the quasistatic mode were used to establish the enhancement effect of STF, owing to the dominant thickening mechanism. The results of pullout–in tests for STF show that the thickening effort of STF becomes stronger with increasing speed. There is an observable increase for the pullout–in force. The addition of STF can slightly improve the yarn pullout force and peak stab force for STF-treated fabric at low velocities, owing to friction enhancement. More importantly, at higher speeds, the peak pullout force of yarn was increased to 28.9 N, which increased by about 140% compared with low velocities. The peak stab forces increased by about 80% compared with low stab speeds. It is affirmed that the thickening effect of STF under normal loads plays a dominant role in enhancing STF–fabric composite materials.","PeriodicalId":505915,"journal":{"name":"Textile Research Journal","volume":"98 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141378186","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 : 2024-06-04DOI: 10.1177/00405175241252964
H. Dalkılıç, Hakan Özdemir, Mehmet Hilal Özcanhan
The use of smart textiles is expanding. The wearer’s data are transferred to the Cloud by a mobile device, and shared with authorized parties. The study aims to monitor continuously and share our wearable smart textile’s heartbeat, body temperature, and the surrounding magnetic field data, providing early intervention before negative health events occur, or a high magnetic field is of concern to its wearer. A heartbeat sensor, a temperature sensor, and an ESP32 module with a built-in Hall effect sensor were integrated with a special conductive wire woven fabric. The data measured by the sensors were sent to the cloud server wirelessly by the ESP32. Our custom-made software analyzes the collected data with statistical methods, enabling the generation of predictions and early warnings. The generated reports can be sent to the smart textile user, doctors, and authorized third-party health institutions, and relevant magnetic field authorities. Our study shows that the body temperature reported by the designed smart textile has less than a 2.0% error compared with the actual value. On the other hand, the reported heartbeat has a 11.0% error, as it largely depends on sensor quality and placement location. In addition to these, continuous monitoring of the ambient magnetic field has been achieved with smart textiles. Our smart textile design sends the wearer’s body temperature, heartbeat, and surrounding magnetic field information to a cloud server automatically and wirelessly. Our custom-made software and mobile application use the data to provide early warnings and live reports on users’ mobile devices.
{"title":"Wireless transmission of vital body data and ambient magnetic field with wearable IoT device attached smart textile","authors":"H. Dalkılıç, Hakan Özdemir, Mehmet Hilal Özcanhan","doi":"10.1177/00405175241252964","DOIUrl":"https://doi.org/10.1177/00405175241252964","url":null,"abstract":"The use of smart textiles is expanding. The wearer’s data are transferred to the Cloud by a mobile device, and shared with authorized parties. The study aims to monitor continuously and share our wearable smart textile’s heartbeat, body temperature, and the surrounding magnetic field data, providing early intervention before negative health events occur, or a high magnetic field is of concern to its wearer. A heartbeat sensor, a temperature sensor, and an ESP32 module with a built-in Hall effect sensor were integrated with a special conductive wire woven fabric. The data measured by the sensors were sent to the cloud server wirelessly by the ESP32. Our custom-made software analyzes the collected data with statistical methods, enabling the generation of predictions and early warnings. The generated reports can be sent to the smart textile user, doctors, and authorized third-party health institutions, and relevant magnetic field authorities. Our study shows that the body temperature reported by the designed smart textile has less than a 2.0% error compared with the actual value. On the other hand, the reported heartbeat has a 11.0% error, as it largely depends on sensor quality and placement location. In addition to these, continuous monitoring of the ambient magnetic field has been achieved with smart textiles. Our smart textile design sends the wearer’s body temperature, heartbeat, and surrounding magnetic field information to a cloud server automatically and wirelessly. Our custom-made software and mobile application use the data to provide early warnings and live reports on users’ mobile devices.","PeriodicalId":505915,"journal":{"name":"Textile Research Journal","volume":"2 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141267944","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 : 2024-06-04DOI: 10.1177/00405175241256385
Long Li, Yujing Zhang, Jiajun Sheng, Zhuo Meng, Yize Sun
Braiding machines occupy an important position in the textile industry. Aiming at the characteristics of high real-time requirements for yarn target detection in braiding machines, small yarn change curvature, and large background interference, based on the YOLOv7 algorithm model, the lightweight convolution GSConv and VoVGSCSP modules are used to replace the ELAN-H module in the YOLOv7 algorithm to reduce the complexity of the model and improve the detection speed. In order to solve the problems of confusing detection target categories and poor detection effect of targets with small curvature change, a new bounding box loss function, wise intersection over union loss, is introduced to solve the imbalance of sample quality and improve the robustness and generalization ability of the model. The ablation experiment proves that the added modules can be well fused together. The mean average precision, precision, recall, frames per second, and GFLOPs of the improved YOLOv7 are 92.2%, 93.1%, 89.7%, 123.6, and 89.9, respectively.
{"title":"Yarn target detection of a braiding machine based on the YOLO algorithm","authors":"Long Li, Yujing Zhang, Jiajun Sheng, Zhuo Meng, Yize Sun","doi":"10.1177/00405175241256385","DOIUrl":"https://doi.org/10.1177/00405175241256385","url":null,"abstract":"Braiding machines occupy an important position in the textile industry. Aiming at the characteristics of high real-time requirements for yarn target detection in braiding machines, small yarn change curvature, and large background interference, based on the YOLOv7 algorithm model, the lightweight convolution GSConv and VoVGSCSP modules are used to replace the ELAN-H module in the YOLOv7 algorithm to reduce the complexity of the model and improve the detection speed. In order to solve the problems of confusing detection target categories and poor detection effect of targets with small curvature change, a new bounding box loss function, wise intersection over union loss, is introduced to solve the imbalance of sample quality and improve the robustness and generalization ability of the model. The ablation experiment proves that the added modules can be well fused together. The mean average precision, precision, recall, frames per second, and GFLOPs of the improved YOLOv7 are 92.2%, 93.1%, 89.7%, 123.6, and 89.9, respectively.","PeriodicalId":505915,"journal":{"name":"Textile Research Journal","volume":"1 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141266777","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 : 2024-06-04DOI: 10.1177/00405175241256593
Ludmila Fridrichová, Pavel Němeček, R. Knížek, Katarzyna E Buczkowska
There are many indoor and outdoor areas where one encounters acoustic discomfort. In this study, the design possibilities of a passive acoustic panel with macro-openings are investigated. An acoustic panel which absorbs a defined frequency of sound can be created when a suitable combination of acoustic absorption affecting parameters is found. These optimum parameters for a panel with macro holes were sought by means of experimental research regarding: the type of raw material suitable for the production of the components of the acoustic panel, the optimal hole shapes, their size and positioning on the panel lid, the possibility of using shredded textile from unsorted textile waste. The experiments in which the influence of the hole size and placement on the acoustic absorption was investigated were verified using a theoretical electrical equivalent circuit model created in the MathCad programming environment. The study found that the commonly used perforated panels made of Plexiglas can be fully replaced by panels made of shredded unsorted textile waste. It has also been shown that the shapes of the holes which can act as a design element can have various combinations, i.e. as long as the same percentage of perforation is maintained, the size of the circular holes or the shape of the slotted holes do not matter, as their acoustic absorption is within approximately the same range. The findings published in the study can help in the design of passive panels for both interiors and exterior use.
{"title":"Opportunities to use textile waste for the production of acoustic panels","authors":"Ludmila Fridrichová, Pavel Němeček, R. Knížek, Katarzyna E Buczkowska","doi":"10.1177/00405175241256593","DOIUrl":"https://doi.org/10.1177/00405175241256593","url":null,"abstract":"There are many indoor and outdoor areas where one encounters acoustic discomfort. In this study, the design possibilities of a passive acoustic panel with macro-openings are investigated. An acoustic panel which absorbs a defined frequency of sound can be created when a suitable combination of acoustic absorption affecting parameters is found. These optimum parameters for a panel with macro holes were sought by means of experimental research regarding: the type of raw material suitable for the production of the components of the acoustic panel, the optimal hole shapes, their size and positioning on the panel lid, the possibility of using shredded textile from unsorted textile waste. The experiments in which the influence of the hole size and placement on the acoustic absorption was investigated were verified using a theoretical electrical equivalent circuit model created in the MathCad programming environment. The study found that the commonly used perforated panels made of Plexiglas can be fully replaced by panels made of shredded unsorted textile waste. It has also been shown that the shapes of the holes which can act as a design element can have various combinations, i.e. as long as the same percentage of perforation is maintained, the size of the circular holes or the shape of the slotted holes do not matter, as their acoustic absorption is within approximately the same range. The findings published in the study can help in the design of passive panels for both interiors and exterior use.","PeriodicalId":505915,"journal":{"name":"Textile Research Journal","volume":"6 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141266377","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 : 2024-06-04DOI: 10.1177/00405175241253867
M. Y. H. Saty, Ibrahim Abdalla, Bismark Sarkodie, Amjad Farooq, Ahmed Elhassan, Yong Wang, Zhenzhen Xu
There has been a recent transition from conventional textiles to smart and electronic textiles, mostly due to the rise of wearable technology. Functional yarns have been created to fulfil the varied application needs in various environments. Conductive yarns have attracted considerable interest because of their exceptional softness, comfort, and diverse capabilities, such as electromagnetic shielding and soft sensors. This paper presents a comprehensive examination of spinning techniques utilized for the production of conductive yarns, incorporating a range of conductive additives, conductive fabrics, and conventional electrical elements. The text emphasizes that the performance of conductive yarns is significantly affected by their structure, which is dictated by the geometrical configurations of their elements, and the spinning geometry, commonly known as the twisted triangle. The performance of conductive yarns is primarily determined by the concentration of conductive components in their structure. Moreover, this paper examines the possible uses of conductive fabrics in several technical domains. The mentioned applications encompass antistatic packaging, heating elements, wearable electronics, smart membrane technology, data storage and transmission, sensors, actuators, and protection against electromagnetic interference and electrostatic discharge. Conductive textiles possess a versatile character that presents a wide range of opportunities for progress in multiple industries. To summarize, this review thoroughly examines the spinning methods used to create conductive yarns, with a particular focus on the significance of yarn structure in influencing their performance. Furthermore, it emphasizes the wide range of technological applications in which conductive textiles can be utilized.
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