--- _id: '2181' abstract: - lang: eng text: " Crocheted textiles receive scarce scientific study and are at present not produced in automatized industrial scale. Computer-aided modelling and simulation offer capabilities for investigating possible technical fields of application. In this context a novel approach for modelling crocheted textiles consisting of chains, slip stitches and single crochets using a topology based and parameterized key point representation at the meso scale is proposed. According to the stitch size, yarn diameter and pattern spline interpolated models, which are free of interpenetrations up to approximately a 1/10 ratio of yarn diameter to stitch size, are generated by a developed Python program and software from the company TexMind. The models are suitable for finite element method (FEM) applications with LS-DYNA with which the mechanical properties of crocheted textiles can be studied. Exemplary simulations show anisotropic properties and homogeneous distribution of stresses in a crocheted textile. Due to the computationally simple and flexible modelling the presented approach may serve as a tool for designing planar crocheted textiles. This allows for estimation of the required yarn length and offers the prediction capabilities of simple and fast FEM simulations based on beam elements.\r\n \ " article_number: '152808372211392' article_type: original author: - first_name: Jan Lukas full_name: Storck, Jan Lukas id: '221157' last_name: Storck orcid: 0000-0002-6841-8791 - first_name: Dennis full_name: Gerber, Dennis last_name: Gerber - first_name: Liska full_name: Steenbock, Liska last_name: Steenbock - first_name: Yordan full_name: Kyosev, Yordan last_name: Kyosev citation: alphadin: 'Storck, Jan Lukas ; Gerber, Dennis ; Steenbock, Liska ; Kyosev, Yordan: Topology based modelling of crochet structures. In: Journal of Industrial Textiles Bd. 52, SAGE Publications (2022)' ama: Storck JL, Gerber D, Steenbock L, Kyosev Y. Topology based modelling of crochet structures. Journal of Industrial Textiles. 2022;52. doi:10.1177/15280837221139250 apa: Storck, J. L., Gerber, D., Steenbock, L., & Kyosev, Y. (2022). Topology based modelling of crochet structures. Journal of Industrial Textiles, 52. https://doi.org/10.1177/15280837221139250 bibtex: '@article{Storck_Gerber_Steenbock_Kyosev_2022, title={Topology based modelling of crochet structures}, volume={52}, DOI={10.1177/15280837221139250}, number={152808372211392}, journal={Journal of Industrial Textiles}, publisher={SAGE Publications}, author={Storck, Jan Lukas and Gerber, Dennis and Steenbock, Liska and Kyosev, Yordan}, year={2022} }' chicago: Storck, Jan Lukas, Dennis Gerber, Liska Steenbock, and Yordan Kyosev. “Topology Based Modelling of Crochet Structures.” Journal of Industrial Textiles 52 (2022). https://doi.org/10.1177/15280837221139250. ieee: J. L. Storck, D. Gerber, L. Steenbock, and Y. Kyosev, “Topology based modelling of crochet structures,” Journal of Industrial Textiles, vol. 52, 2022. mla: Storck, Jan Lukas, et al. “Topology Based Modelling of Crochet Structures.” Journal of Industrial Textiles, vol. 52, 152808372211392, SAGE Publications, 2022, doi:10.1177/15280837221139250. short: J.L. Storck, D. Gerber, L. Steenbock, Y. Kyosev, Journal of Industrial Textiles 52 (2022). date_created: 2022-11-17T09:12:15Z date_updated: 2024-03-27T14:01:15Z doi: 10.1177/15280837221139250 file: - access_level: open_access content_type: application/pdf creator: jstorck date_created: 2022-11-17T09:11:11Z date_updated: 2022-11-17T09:11:11Z file_id: '2182' file_name: 15280837221139250.pdf file_size: 2360432 relation: main_file success: 1 file_date_updated: 2022-11-17T09:11:11Z has_accepted_license: '1' intvolume: ' 52' language: - iso: eng license: https://creativecommons.org/licenses/by-nc/4.0/ main_file_link: - open_access: '1' url: https://doi.org/10.1177/15280837221139250 oa: '1' publication: Journal of Industrial Textiles publication_identifier: eissn: - 1530-8057 issn: - 1528-0837 publication_status: published publisher: SAGE Publications quality_controlled: '1' status: public title: Topology based modelling of crochet structures tmp: image: /images/cc_by_nc.png legal_code_url: https://creativecommons.org/licenses/by-nc/4.0/legalcode name: Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) short: CC BY-NC (4.0) type: journal_article urn: urn:nbn:de:hbz:bi10-21811 user_id: '216459' volume: 52 year: '2022' ... --- _id: '1055' abstract: - lang: eng text: " Polyacrylonitrile can be used as a base material for thermochemical conversion into carbon. Especially nanofiber mats, produced by electrospinning, are of interest to create carbon nanofibers. Optimal stabilization and carbonization parameters, however, strongly depend on the spatial features of the original material. While differences between nano- and microfibers are well known, this paper shows that depending on the electrospinning method and the solvent used, considerable differences between various nanofiber mats have to be taken into account for the optimization of the stabilization conditions. Here, we examine for the first time polyacrylonitrile nanofiber mats, electrospun with wire electrospinning from the low-toxic dimethyl sulfoxide as a solvent, instead of the typically used needle electrospinning from the toxic dimethylformamide. Additionally, we used inexpensive polyacrylonitrile from knitting yarn instead of highly specialized material, tailored for carbonization. Our results show that by carefully controlling the maximum stabilization temperature and especially the heating rate, fully stabilized polyacrylonitrile fibers without undesired interconnections can be created as precursors for carbonization.\r\n \ " author: - first_name: Lilia full_name: Sabantina, Lilia last_name: Sabantina - first_name: Michaela full_name: Klöcker, Michaela last_name: Klöcker - first_name: Martin full_name: Wortmann, Martin last_name: Wortmann - first_name: José Rodríguez full_name: Mirasol, José Rodríguez last_name: Mirasol - first_name: Tomás full_name: Cordero, Tomás last_name: Cordero - first_name: Elmar full_name: Moritzer, Elmar last_name: Moritzer - first_name: Karin full_name: Finsterbusch, Karin last_name: Finsterbusch - first_name: Andrea full_name: Ehrmann, Andrea id: '223776' last_name: Ehrmann orcid: 0000-0003-0695-3905 orcid_put_code_url: https://api.orcid.org/v2.0/0000-0003-0695-3905/work/94759306 citation: alphadin: 'Sabantina, Lilia ; Klöcker, Michaela ; Wortmann, Martin ; Mirasol, José Rodríguez ; Cordero, Tomás ; Moritzer, Elmar ; Finsterbusch, Karin ; Ehrmann, Andrea: Stabilization of polyacrylonitrile nanofiber mats obtained by needleless electrospinning using dimethyl sulfoxide as solvent. In: Journal of Industrial Textiles Bd. 50, SAGE Publications (2020), Nr. 2, S. 224–239' ama: Sabantina L, Klöcker M, Wortmann M, et al. Stabilization of polyacrylonitrile nanofiber mats obtained by needleless electrospinning using dimethyl sulfoxide as solvent. Journal of Industrial Textiles. 2020;50(2):224-239. doi:10.1177/1528083718825315 apa: Sabantina, L., Klöcker, M., Wortmann, M., Mirasol, J. R., Cordero, T., Moritzer, E., … Ehrmann, A. (2020). Stabilization of polyacrylonitrile nanofiber mats obtained by needleless electrospinning using dimethyl sulfoxide as solvent. Journal of Industrial Textiles, 50(2), 224–239. https://doi.org/10.1177/1528083718825315 bibtex: '@article{Sabantina_Klöcker_Wortmann_Mirasol_Cordero_Moritzer_Finsterbusch_Ehrmann_2020, title={Stabilization of polyacrylonitrile nanofiber mats obtained by needleless electrospinning using dimethyl sulfoxide as solvent}, volume={50}, DOI={10.1177/1528083718825315}, number={2}, journal={Journal of Industrial Textiles}, publisher={SAGE Publications}, author={Sabantina, Lilia and Klöcker, Michaela and Wortmann, Martin and Mirasol, José Rodríguez and Cordero, Tomás and Moritzer, Elmar and Finsterbusch, Karin and Ehrmann, Andrea}, year={2020}, pages={224–239} }' chicago: 'Sabantina, Lilia, Michaela Klöcker, Martin Wortmann, José Rodríguez Mirasol, Tomás Cordero, Elmar Moritzer, Karin Finsterbusch, and Andrea Ehrmann. “Stabilization of Polyacrylonitrile Nanofiber Mats Obtained by Needleless Electrospinning Using Dimethyl Sulfoxide as Solvent.” Journal of Industrial Textiles 50, no. 2 (2020): 224–39. https://doi.org/10.1177/1528083718825315.' ieee: L. Sabantina et al., “Stabilization of polyacrylonitrile nanofiber mats obtained by needleless electrospinning using dimethyl sulfoxide as solvent,” Journal of Industrial Textiles, vol. 50, no. 2, pp. 224–239, 2020. mla: Sabantina, Lilia, et al. “Stabilization of Polyacrylonitrile Nanofiber Mats Obtained by Needleless Electrospinning Using Dimethyl Sulfoxide as Solvent.” Journal of Industrial Textiles, vol. 50, no. 2, SAGE Publications, 2020, pp. 224–39, doi:10.1177/1528083718825315. short: L. Sabantina, M. Klöcker, M. Wortmann, J.R. Mirasol, T. Cordero, E. Moritzer, K. Finsterbusch, A. Ehrmann, Journal of Industrial Textiles 50 (2020) 224–239. date_created: 2021-05-31T18:36:08Z date_updated: 2021-06-01T07:36:26Z doi: 10.1177/1528083718825315 intvolume: ' 50' issue: '2' language: - iso: eng page: 224-239 publication: Journal of Industrial Textiles publication_identifier: eissn: - 1530-8057 issn: - 1528-0837 publication_status: published publisher: SAGE Publications status: public title: Stabilization of polyacrylonitrile nanofiber mats obtained by needleless electrospinning using dimethyl sulfoxide as solvent type: journal_article user_id: '237837' volume: 50 year: '2020' ... --- _id: '1056' abstract: - lang: eng text: " Textile fabrics are often subject to abrasion, starting from exposed parts of garments to a variety of technical textiles. Abrasion protection by usual coatings, however, can significantly decrease the water vapor transport through a fabric which is often not desired, especially in the case of garments. In our paper, we report on an approach to combine increased abrasion resistance with sufficient water vapor transport properties. For this, different polymers (poly(methyl methacrylate), acrylonitrile butadiene styrene, or amorphous polyamides) were coated on cotton and polyester woven fabrics. The results of abrasion tests against sandpaper show significantly increased abrasion resistance. The absolute evaporation resistance, measured by a Permetest testing device, was only slightly increased up to values still acceptable for typical garments. Images of all coatings by helium ion microscopy deliver an explanation for the measuring results. Polymer coatings on the polyester fabric resulted in a slight reduction of the hydrophobicity, while coating the cotton fabric severely increased the contact angles of the originally superhydrophilic material.\r\n " author: - first_name: Martin full_name: Wortmann, Martin last_name: Wortmann - first_name: Natalie full_name: Frese, Natalie last_name: Frese - first_name: Lubos full_name: Hes, Lubos last_name: Hes - first_name: Armin full_name: Gölzhäuser, Armin last_name: Gölzhäuser - first_name: Elmar full_name: Moritzer, Elmar last_name: Moritzer - first_name: Andrea full_name: Ehrmann, Andrea id: '223776' last_name: Ehrmann orcid: 0000-0003-0695-3905 orcid_put_code_url: https://api.orcid.org/v2.0/0000-0003-0695-3905/work/94759301 citation: alphadin: 'Wortmann, Martin ; Frese, Natalie ; Hes, Lubos ; Gölzhäuser, Armin ; Moritzer, Elmar ; Ehrmann, Andrea: Improved abrasion resistance of textile fabrics due to polymer coatings. In: Journal of Industrial Textiles Bd. 49, SAGE Publications (2018), Nr. 5, S. 572–583' ama: Wortmann M, Frese N, Hes L, Gölzhäuser A, Moritzer E, Ehrmann A. Improved abrasion resistance of textile fabrics due to polymer coatings. Journal of Industrial Textiles. 2018;49(5):572-583. doi:10.1177/1528083718792655 apa: Wortmann, M., Frese, N., Hes, L., Gölzhäuser, A., Moritzer, E., & Ehrmann, A. (2018). Improved abrasion resistance of textile fabrics due to polymer coatings. Journal of Industrial Textiles, 49(5), 572–583. https://doi.org/10.1177/1528083718792655 bibtex: '@article{Wortmann_Frese_Hes_Gölzhäuser_Moritzer_Ehrmann_2018, title={Improved abrasion resistance of textile fabrics due to polymer coatings}, volume={49}, DOI={10.1177/1528083718792655}, number={5}, journal={Journal of Industrial Textiles}, publisher={SAGE Publications}, author={Wortmann, Martin and Frese, Natalie and Hes, Lubos and Gölzhäuser, Armin and Moritzer, Elmar and Ehrmann, Andrea}, year={2018}, pages={572–583} }' chicago: 'Wortmann, Martin, Natalie Frese, Lubos Hes, Armin Gölzhäuser, Elmar Moritzer, and Andrea Ehrmann. “Improved Abrasion Resistance of Textile Fabrics Due to Polymer Coatings.” Journal of Industrial Textiles 49, no. 5 (2018): 572–83. https://doi.org/10.1177/1528083718792655.' ieee: M. Wortmann, N. Frese, L. Hes, A. Gölzhäuser, E. Moritzer, and A. Ehrmann, “Improved abrasion resistance of textile fabrics due to polymer coatings,” Journal of Industrial Textiles, vol. 49, no. 5, pp. 572–583, 2018. mla: Wortmann, Martin, et al. “Improved Abrasion Resistance of Textile Fabrics Due to Polymer Coatings.” Journal of Industrial Textiles, vol. 49, no. 5, SAGE Publications, 2018, pp. 572–83, doi:10.1177/1528083718792655. short: M. Wortmann, N. Frese, L. Hes, A. Gölzhäuser, E. Moritzer, A. Ehrmann, Journal of Industrial Textiles 49 (2018) 572–583. date_created: 2021-05-31T18:36:09Z date_updated: 2021-06-01T07:36:24Z doi: 10.1177/1528083718792655 intvolume: ' 49' issue: '5' language: - iso: eng page: 572-583 publication: Journal of Industrial Textiles publication_identifier: eissn: - 1530-8057 issn: - 1528-0837 publication_status: published publisher: SAGE Publications status: public title: Improved abrasion resistance of textile fabrics due to polymer coatings type: journal_article user_id: '237837' volume: 49 year: '2018' ...