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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 Stress distribution in a femoral implant with and without bone cement and at different inclination angles(Materialpruefung/Materials Testing, 2018-04) Topkaya, Tolga; Solmaz, Murat Yavuz; Turgut, Aydın; Dündar, Serkan; Şanlıtürk, İsmail HakkıThe purpose of this study was to investigate numerically the effects of the inclination (collodiaphyseal) angle and bone cement (polymethylmethacrylate) filling on the stress distribution of human femurs and implants after the implementation of a partial endoprotez arthroplasty. Ti6Al4V, which is the most commonly used implant material, was choosen for this study. In the numerical study, solid models of implants and femurs were created using the SolidWorks 2010 package program, then stress analyses were carried out at five different inclination angles, 120°, 125°, 130°, 135° and 140°, with and without bone cement (polymethylmethacrylate), using the ANSYS Workbench 12.0 package program. The anteversion angle was assumed to be 12.5° for all models. As a result of the increase in the inclination angle and the addition of bone cement, it was determined that the stress values of the femurs and implants were reduced. Within the limitations of this study it has been shown that parameters like bone cement, anteversion angle, and an appropriate inclination angle should be tested previous to partial endoprosthesis arthroplasty surgery necessary as a result of damage to the human femur.Öğe Çatlak bulunan izotropik dökme demir levhada gerilme analizinin incelenmesi(Karabük Üniversitesi, 2009-05) Adin, Hamit; İşcan, Bahattin; Turgut, AydınBu çalışmada, eksenel yüke maruz ve içinde yüke dik çatlak bulunan izotropik bir levhada gerilme analizi yapılmıştır. Çalışmada sonlu elemanlar metodu kullanılarak sayısal çözüm yapılmıştır. Çözümde SAP2000 programı kullanılmıştır. Çalışmada gerilme dağılımlarının hassasiyeti açısından levhanın boyutları küçük alınmıştır. Bu küçük levha sonlu küçük parçalara bölünüp uygulanan yük iki ayrı şiddette, tekil ve düzgün yayılı olarak uygulanmıştır. Uygulanan yükün dışında çatlak genişliği de değişken olarak alınmıştır. Levhanın malzemesi dökme demir olarak ele alınırken diğer parametreler değiştirilerek program çalıştırılmaktadır. Bu analizler sonucunda program, levhadaki gerilme dağılımlarını diyagram halinde vermektedir. Diyagramlardan çatlağın uç kısımlarında büyük gerilme yığılmaları olduğu görülmüştür.Öğe The influence of adherend width on tensile strength and failure load of Z joints bonded with adhesive(International Journal of Physical Sciences, 2012-07-19) Adin, Hamit; işcan, BahattinIn this study, the influence of the adherend width on the tensile strength and failure loads of Z joints were analyzed both experimentally and numerically. The Z joints were subjected to tensile load in the experiments. The stress analyses were executed using the finite element method (FEM). The FEM analyses were performed with Ansys (v.14.0.1). The FEM analyses were carried out to investigate the stress and strain distributions in the adhesive layer of the Z joints. Experimental results were also compared with numerical results, thus they were found quite reasonable. The results showed that the joint strength and failure loads increased when specimen width (b) was increased. Lowest failure load was also determined at the 10 mm width for each specimen. In order to increase the performance of the joint, 30 mm was found to be the most suitable value of widthÖğe The effects of width on the strength of adhesively bonded Z joints subjected to tensile loads(Taylor & Francis, 2012-11-15) Adin, HamitIn this study, the effect of the adherend width on the tensile strength and the failure load of Z joints was analyzed both experimentally and numerically using two adhesives with different properties. Atlac™ 580 and Flexsotix™ were used as adhesives, and adherends were prepared with two different composite materials. To identify the mechanical properties of the adhesives, the bulk specimen method was used. Then, the Z joints were prepared using the aforementioned adhesives. The Z joints were subjected to tensile loads in the experiments. The stress analyses were performed using a three-dimensional finite element method (3D FEM). The 3D FEM analyses were performed with ANSYS (10.0). The 3D FEM analyses were performed to investigate the stress distributions in the adhesive layers in the Z joints. The numerical results compared favorably with the experimental results, and were found to be quite reasonable. The results showed that the joint strength increased when the specimen width (b) was increased. To maximize the performance of the joint for either adhesive, b=15mm was found to be the most suitable value for the width.Öğe Helis dişli çarklarda farklı diş taban geometrisinin dişli çark ağırlığına ve gerilme analizine etkisi(e-Journal of New World Sciences Academy, 2011-01) Adin, Hamit; Topkaya, Tolga; Solmaz, Murat YavuzBu çalışmanın amacı, enerji ve malzeme tasarrufu sağlamak amacıyla güç ve hareket iletiminde sıklıkla kullanılan helis dişli çarkların ağırlıklarını azaltmaktır. Bu amaçla dişli çarkların normal çalışma şartları içerisinde gerilmeye en az maruz kalan yüzeyleri 7 farklı geometride delinerek boşaltılmıştır. Modeller SolidWorks 2010 programı kullanılarak modellenmiş ve daha sonra oluşturulan katı modeller ANSYS Workbench 12.0 sonlu elemanlar paket programına aktarılarak gerilme analizleri gerçekleştirilmiştir. Tüm analizlerde dişli çark malzemesi olarak AISI 1045 çeliği seçilmiştir. Gerçekleştirilen çalışma neticesinde elde edilen sonuçlar birbiriyle karşılaştırmalı olarak verilmiş ve en uygun tasarımın malzemeden %27 kazanım sağlayan 7 mm çapında 6 adet dairesel delik açılan model olduğu tespit edilmiştir.Öğe The effect of overlap length adhesive with bonded in Z type materials(Academic Journals, 2011-09-11) İşcan, Bahattin; Adin, Hamit; Aydın, TurgutThe usage of adhesives as connecting method is increasing rapidly in today world. Many of research, development and engineering have been made to find the most important parameters of adhesion. In this study, stress analysis of bonded Z type that connected with various adhesives has been investigated. The adhesive thickness and overlap non-angle was constant but overlap length and overlap angle were varied. This paper has deal with the effect of overlap length on predicting of failure load of adhesive. An effective method for numerical solution in finite element method (FEM) has been performed in analysis. The FEM code employed was ANSYS(10.0). Experimental results were compared with numerical results and were found quite reasonable.Öğe The effect of angle adhesive with bonded in Z type materials(e-Journal of New World Sciences Academy, 2010-03) Adin, Hamit; Turgut, Aydın; İşcan, BahattinThe usage of adhesives as connecting on method is increasing rapidly in today world. Many of research, development and engineering have been made to find the most important parameters for a success adhesion. In this study, stress analysis of Z type bonded sheet that connected with various adhesives has been investigated. The adhesive thickness was constant (0.20 mm) b lap joint length and lap joint angles (θ=15º, 30º, 45º) were varied for analysis. This study has deal with the effect of overlap angle on predicting of the damage load of adhesively bonded joints via a linear FEM(Finite Element Method). All of the analysis were carried out with Ansys (10.0) computer software with a generally purposed finite element application. Experimental results were compared with numerical results and were found quite reasonableÖğe Helis dişli çarklarda farklı diş taban geometrisinin dişli çark ağırlığına ve gerilme analizine etkisi(Diyarbakır Büyükşehir Belediyesi, 2010-10) Adin, Hamit; Topkaya, Tolga; Solmaz, Murat YavuzBu çal mann amac, enerji ve malzeme tasarrufu sa lamak amacyla güç ve hareket iletiminde sklkla kullanlan helis di li çarklarn a rlklarn azaltmaktr. Bu amaçla di li çarklarn normal çal ma artlar içerisinde gerilmeye en az maruz kalan yüzeyleri 7 farkl geometride delinerek bo altlm tr. Modeller SolidWorks 2010 program kullanlarak modellenmi ve daha sonra olu turulan kat modeller ANSYS Workbench 12.0 sonlu elemanlar paket programna aktarlarak gerilme analizleri gerçekle tirilmi tir. Tüm analizlerde di li çark malzemesi olarak AISI 1045 çeli i seçilmi tir. Gerçekle tirilen çal ma neticesinde elde edilen sonuçlar birbiriyle kar la trmal olarak verilmi ve en uygun tasarmn malzemeden % 27 kazanm sa layan 7 mm çapnda 6 adet dairesel delik açlan model oldu u tespit edilmi tir.Öğe Investigation of the effect of different variables on strength of adhesive joints(WILEY, 2014-10-01) Adin, Hamit; Deniz, Mehmet EminIn this article, the tensile strength of different adhesive bonded joints under a tensile load was analyzed numerically. The effects of certain parameters, including the bonding length and bonding ratio, were investigated. For this reason, the epoxy adhesive was used. Joints were prepared with aluminum materials. The stress analyses were employed using the Finite Element Method (FEM). ANSYS (v.14.0.1) FEM tool was utilized to investigate the stress distribution characteristics of aluminum lap joint under tensile loading. Numerical results were found to be quite reasonable. The numerical results show that the influences of variations are very notable when the equivalent stresses are between 18 MPa and 20 MPa. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
