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Bu çalışmada, araçlarda kullanılan yangın söndürücü tüplerin iç basınç altında yapısında meydana gelen mekanik davranışları incelendi. Bu amaç için bir deneysel düzenek tasarlanarak tüplerin iç basınç testleri gerçekleştirildi. Kurulan deney düzeneğinde, uygulanan iç basınç değerinin tüpün yırtılarak patlaması sonucunda tüpün etrafına yerleştirilen deformasyon ölçerler (strain gauge) vasıtasıyla ölçümler yapılmıştır. Ayrıca yapılan bu çalışma NX/Nastran programında yapılan SEA analizi ile desteklendi. İç basınç testinde çok yaygın kullanılan 1 kg’lık yangın tüpün 92 bar civarında tüp yarılarak patlamış ve patlama anına kadar tüpteki deformasyonlar incelenmiştir. Deformasyon sonuçlarına göre çevresel gerilmelerin daha büyük önem arz ettiği görüldü. Bu sayede yangın söndürmede kullanılan ve hayati önem taşıyan bu ürünlerin iç basınç altında ortaya koydukları mukavemet performansı incelendi. Bu tüplerin mekanik davranışlarının anlaşılmasıyla yapılacak tasarım ve imalat değişkenleriyle aynı hacimlere daha yüksek kütleleri ihtiva eden yangın tüplerinin üretilmesi açısından önemlidir.
This study examined the mechanical behaviors occurring in the structure of the internal pressure of the fire deterrent pipes used in vehicles. For this purpose, an experimental arrangement was designed to conduct internal pressure tests of the pipes. In the established experimental arrangement, measurements were made through the deformation measurements (strain gauge) placed around the tube as a result of the explosion of the internal pressure value applied. This study was also supported by the SEA analysis conducted in the NX/Nastran program. The 1 kg fire tube, which was widely used in the internal pressure test, exploded by half-pipe around 92 bar and the deformations in the tube were studied until the moment of the explosion. The results of deformation showed that environmental tensions were more important. Thus, the strength performance of these products that are essential and used in the fire extinction was studied under internal pressure. Understanding the mechanical behavior of these pipes is important in terms of the production of fire pipes that contain higher masses to the same volumes with the design and manufacturing variables.
In this study, the mechanical behaviors of the fire extinguisher tubes used in vehicles under the internal pressure were examined. For this purpose, an experimental setup was designed and internal pressure tests of the tubes were carried out. In the experiment set up, strain gauge measurements were made around the tube as a result of the tearing of the applied internal pressure value and the tube bursting. In addition, this study was supported by FEM analysis in NX / Nastran program. In the internal pressure test, 92 kg of 1 kg fire tube, which is widely used, burst by breaking the tube and deformations were examined until the moment of the explosion. According to the deformation results, environmental stresses were found to be of greater importance. In this way, the strength performance of these products, which are used in fire extinguishing and are of vital importance, were examined. It is important for the production of fire tubes containing higher masses with the same volumes as the design and manufacturing variables to be made by understanding the mechanical behavior of these tubes.
Field : Fen Bilimleri ve Matematik
Journal Type : Ulusal
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