Effect of the lateral resistance of fabric on the critical load of the sewing needle in sewing technology part A: Theoretical approach
The needle of the industrial sewing machine is its most important part. During the sewing process, the needle is subjected to various actions and interactions between these actions. One of the factors that are most related to these interactions is the lateral elastic resistance – spring effect – of...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-12-01
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| Series: | Alexandria Engineering Journal |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1110016821002908 |
| _version_ | 1798032703719735296 |
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| author | Wael A. Hashima Ibrahim A. Elhawary |
| author_facet | Wael A. Hashima Ibrahim A. Elhawary |
| author_sort | Wael A. Hashima |
| collection | DOAJ |
| description | The needle of the industrial sewing machine is its most important part. During the sewing process, the needle is subjected to various actions and interactions between these actions. One of the factors that are most related to these interactions is the lateral elastic resistance – spring effect – of the sewn fabric on the needle during its penetration in the layers of fabric. In the present work, this effect has been investigated via a special formula, where the spring constant is incorporated. It was found that the equivalent length coefficient of the sewing needle (γ) ranged between 0.7, where the lower end of the needle still has not penetrated the fabric and 2, where the lower end has already penetrated the fabric. The elastic stability factor (η) was changed from 2.46 to 20.35, to create a critical axial compressive load Pcr=5 for a 39 cN of the sewing needle. This means that the spring constant (S) changed from S=0 to S=∞, which enhanced the critical load by 8 folds. For S=0, the angle has two options, the first is ≤π2λloand the second ≥π2λl/o. The values ofγ, η, and Pcr for (λl)o were not reasonable, while values of these variables for λl/o were acceptable. The future vision of the present work is to design and construct a stand to experimentally check the theoretical work suggested in this paper and to find its experimental values. |
| first_indexed | 2024-04-11T20:17:52Z |
| format | Article |
| id | doaj.art-66d6e1de21ca4799853953200eca1dad |
| institution | Directory Open Access Journal |
| issn | 1110-0168 |
| language | English |
| last_indexed | 2024-04-11T20:17:52Z |
| publishDate | 2021-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Alexandria Engineering Journal |
| spelling | doaj.art-66d6e1de21ca4799853953200eca1dad2022-12-22T04:04:54ZengElsevierAlexandria Engineering Journal1110-01682021-12-0160650195024Effect of the lateral resistance of fabric on the critical load of the sewing needle in sewing technology part A: Theoretical approachWael A. Hashima0Ibrahim A. Elhawary1Textile Engineering Department, Alexandria University, EgyptTextile Engineering Department, Alexandria University, EgyptThe needle of the industrial sewing machine is its most important part. During the sewing process, the needle is subjected to various actions and interactions between these actions. One of the factors that are most related to these interactions is the lateral elastic resistance – spring effect – of the sewn fabric on the needle during its penetration in the layers of fabric. In the present work, this effect has been investigated via a special formula, where the spring constant is incorporated. It was found that the equivalent length coefficient of the sewing needle (γ) ranged between 0.7, where the lower end of the needle still has not penetrated the fabric and 2, where the lower end has already penetrated the fabric. The elastic stability factor (η) was changed from 2.46 to 20.35, to create a critical axial compressive load Pcr=5 for a 39 cN of the sewing needle. This means that the spring constant (S) changed from S=0 to S=∞, which enhanced the critical load by 8 folds. For S=0, the angle has two options, the first is ≤π2λloand the second ≥π2λl/o. The values ofγ, η, and Pcr for (λl)o were not reasonable, while values of these variables for λl/o were acceptable. The future vision of the present work is to design and construct a stand to experimentally check the theoretical work suggested in this paper and to find its experimental values.http://www.sciencedirect.com/science/article/pii/S1110016821002908SewingNeedleLateral resistanceSpring stiffnessAnalytical and graphical solution |
| spellingShingle | Wael A. Hashima Ibrahim A. Elhawary Effect of the lateral resistance of fabric on the critical load of the sewing needle in sewing technology part A: Theoretical approach Alexandria Engineering Journal Sewing Needle Lateral resistance Spring stiffness Analytical and graphical solution |
| title | Effect of the lateral resistance of fabric on the critical load of the sewing needle in sewing technology part A: Theoretical approach |
| title_full | Effect of the lateral resistance of fabric on the critical load of the sewing needle in sewing technology part A: Theoretical approach |
| title_fullStr | Effect of the lateral resistance of fabric on the critical load of the sewing needle in sewing technology part A: Theoretical approach |
| title_full_unstemmed | Effect of the lateral resistance of fabric on the critical load of the sewing needle in sewing technology part A: Theoretical approach |
| title_short | Effect of the lateral resistance of fabric on the critical load of the sewing needle in sewing technology part A: Theoretical approach |
| title_sort | effect of the lateral resistance of fabric on the critical load of the sewing needle in sewing technology part a theoretical approach |
| topic | Sewing Needle Lateral resistance Spring stiffness Analytical and graphical solution |
| url | http://www.sciencedirect.com/science/article/pii/S1110016821002908 |
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