دورية أكاديمية
Numerical Investigations of the Crack Resistance of Ion-Strengthened Sheet Glass Under Bending Strains
| العنوان: | Numerical Investigations of the Crack Resistance of Ion-Strengthened Sheet Glass Under Bending Strains |
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| المؤلفون: | Pavlo P. Hontarovskyi, Natalia V. Smetankina, Serhii V. Ugrimov, Nataliia H. Garmash, Iryna I. Melezhyk |
| المصدر: | Journal of Mechanical Engineering, Vol 24, Iss 3, Pp 27-34 (2021) |
| بيانات النشر: | NAS of Ukraine, A. Pidhornyi Institute of Mechanical Engineering Problems, 2021. |
| سنة النشر: | 2021 |
| المجموعة: | LCC:Mechanical engineering and machinery |
| مصطلحات موضوعية: | aircraft, silicate glass, stress state, strength, residual stress, ion exchange, surface layer defects, Mechanical engineering and machinery, TJ1-1570 |
| الوصف: | The safety of reliable operation of aircraft and their durability essentially depend on the strength of the glazing, which is a critical structural element. There are a number of different requirements for glazing. To provide the necessary parameters, high-strength silicate glass is widely used, and special technologies for its strengthening are used. The analysis of the problem showed that the insufficient strength of aircraft glazing elements and the complexity of methods for monitoring the state of glass during production and operation due to the presence of microscopic surface defects, as well as the need for a reliable assessment of residual stresses, require that there be used new approaches and technical solutions for the development of modern technologies for creating structures. Ion exchange is one of the glass strengthening mechanisms, which makes it possible to reduce the negative effect of surface defects by artificially creating residual compressive stresses and reducing the thickness of the damaged layer. Computational studies, under bending strains, of the crack resistance of ion-exchange strengthened sheet glass were carried out using an in-house FEM-based software package developed to study the thermally stressed states of structures. The results obtained showed that the strength of real sheet glass fracture due to tensile stresses in bending is determined by crack-like surface defects. The creation of residual compressive stresses on the glass surface by ion exchange strengthening provides an increase in bending strength. With an increase in residual stresses and the depth of their distribution, the effect of ion-exchange treatment increases. If the depth of the zone of compressive stresses due to ion-exchange strengthening is much less than the depth of the surface crack, then the strength of the glass depends little on the maximum compressive stresses on the surface. The effect of ion-exchange strengthening increases significantly in the case of a decrease in the depth of the surface crack. The expediency of further research and comparison of calculation results with experimental data are shown. The developed technique will make it possible to solve important practical problems in studying the strength of the aircraft multilayer glazing and determining the optimal methods for eliminating defects |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English Russian Ukrainian |
| تدمد: | 2709-2984 2709-2992 |
| Relation: | https://journal-me.com/wp-content/uploads/2021/09/2021_3_4_eng.pdf; https://doaj.org/toc/2709-2984; https://doaj.org/toc/2709-2992 |
| DOI: | 10.15407/pmach2021.03.027 |
| URL الوصول: | https://doaj.org/article/02b245faa2bb4bc2a3cbff20304f0d1b |
| رقم الأكسشن: | edsdoj.02b245faa2bb4bc2a3cbff20304f0d1b |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 27092984 27092992 |
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| DOI: | 10.15407/pmach2021.03.027 |