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Öğe Strength and failure analysis of inverse Z joints bonded with Vinylester Atlac 580 and Flexo Tix adhesives(Springer, 2012-11) Adin, Hamit; Turgut, AydınIn this study, the tensile strength and failure loads of the inverse Z joints were analyzed both experimentally and numerically by using two adhesives with different properties under a tensile load. Vinylester Atlac 580 and Flexo Tix were used as adhesives and the joints were prepared with two different composite materials. Initially, the mechanical properties of the adhesives were specified using bulk specimens. Then, the stress analyses were performed using three-dimensional finite element method (3-D FEM) via Ansys (V.10.0.1). The experimental results were compared with the numerical results and they were found quite reasonable. According to the test results, it can be seen that when the adherend thickness is increased, the stress increases as well. The most appropriate value of the adherend thickness is identified as t = 5 mm. Furthermore, it was observed that the lowest failure load was obtained at t = 3 mm the thickness for each specimen.Öğe Experimental determination of the mechanical properties of composite materials produced with particle reinforced adhesives(European Journal of Technic, 2017-12) Adin, Hamit; Seven, Burhan; Çakar, Fahri; Yıldırım, Hayri; Ataş, İsaThe composite adhesives which are produced by adding particles into the structural adhesives used in aviation field as well as the latest developments in nanotechnology have given a new perspective to the design of adhesively bonded joints. In this study, the mechanical aspects of fibre glass composite materials produced with method hand lay-up by adding powder of composite material into adhesives were examined with an experimental manner under tensile load. Polyester was used as the structural adhesives; powder of fibre glass composite materials was used as additive materials at 1% or 2% by weight, and the samples of tensile were produced. The results of the experiment showed that tensile failure load was increased in the fibre glass composite material bonded with particle-reinforced adhesive. In addition, the study examined the force-displacement curves and found that the joints with nanoparticle-added adhesive had an increased displacement capacity.Öğe Fıstık kabuğu takviyeli kompozitlerin aşınma davranışlarının incelenmesi(Fırat Akademi A.Ş, 2017) Çelik, Yahya Hışman; Kılıçkap, Erol; Yenigün, Burakİlerleyen teknoloji ile beraber geleneksel malzemeler yetersiz kalmakta ve bu malzemelerin yerine kompozit malzemeler kullanılmaktadır. Kompozit malzemelerin geleneksel malzemelere göre birçok avantajı bulunmaktadır. İstenilen fiziksel özelliklere göre kombine edilebilmesi önemli avantajlarındandır. Kompozitlerde takviye elemanı olarak genellikle cam, karbon, aramid, grafen gibi malzemeler kullanılır. Ancak bu malzemelerin üretim maliyetlerinin yüksek olması, geri dönüşüm işlemlerinin zorlu proseslerden oluşması ve doğada kaybolma sürelerinin uzun olması kenaf, jut, bambu, fıstık ve ceviz kabuğu gibi doğal takviye elemanlarının kullanımını arttırmaktadır. Bu çalışmada, farklı oranlarda fıstık kabuğu tozu takviyeli polimer matrisli kompozitler üretilmiştir. Üretilen bu kompozitlerin sertlik değerleri, basma dayanımları ve aşınma davranışları incelenmiştir. Aşınma deneyleri farklı yük ve kayma mesafelerinde gerçekleştirilmiştir. Yapılan çalışmalar sonucunda, takviye oranının artması ile beraber sertlik değerinin, basma dayanımının ve ağırlık kaybına bağlı aşınma direncinin arttığı tespit edilmiştir. Ayrıca uygulanan yük ve kayma mesafesinin artmasıyla kompozitteki ağırlık kaybının arttığı görülmüştür.Öğe The investigation of the effect of angle on the failure load and strength of scarf lap joints(Elsevier, 2012-05-22) Adin, HamitIn this study, the effect of scarf angle on tensile strength of an epoxy adhesive was investigated bothexperimentally and numerically. Tensile tests were carried out using Scarf Lap Joints (SLJs). Commer-cially available epoxy (Atlac 580) was used as adhesive and fiber reinforced epoxy/glass (Hgw 2372Grade G10 EP GC 203) was used as adherends. The stress analyses were performed using a three-dimensional Finite Element Method (FEM). The FEM analyses were executed with Ansys (V.14.0.1).Experimental results were compared with the FEM results and found quite reasonable. The results haveindicated that when overlap angle increases, the failure load values also decrease in all joints.Öğe The effect of angle on the strain of scarf lap joints subjected to tensile loads(Elsevier, 2011-09-02) Adin, HamitIn this paper, the mechanical behavior of the scarf lap joints (SLJs) bonded with adhesive (Vinylester Atlac 580) under a tensile load was analyzed. The effects of scarf angle at the interface strain distributions of SLJs were examined. The stress analyses were performed via three dimensional Finite Element Method (3D-FEM). The 3D-FEM code employed was Ansys (12.0). Experimental results were compared with the 3D-FEM results and were found quite reasonable. The results indicated that the maximum values of the normalized epsilon(x) strain values were determined at 0 = 60 degrees in all joints.
