Increasing energy need brings people one step closer to energy saving and alternative sources. The search for reliable and sustainable resources also contributes greatly to technological progress. Thanks to advanced technology, energy use becomes more efficient. However, the concept of sustainability emerges in the field of energy as in other sectors. It is expected that electric vehicles, which have started to increase in interest in recent years, will make a positive contribution to issues such as environmental protection and sustainable energy. In addition, production centers for electric vehicles should also be sustainable and sensitive to carbon emissions. In this study, energy and carbon loss assessment was carried out in an electric bus manufacturing factory. With the help of linear regression analysis, the data of the last 3 years were evaluated. Moreover, as a result of internal audits, energy loss points were determined. As a result of this study, sustainability, carbon loss, and energy management issues in an electric vehicle production factory were evaluated and guiding qualities for today's and future technology companies were revealed.
Throughout this study, Tubitak 2244 program scholar Efe Savran with project code 119C154 would like to thank the institution received partial support from.
In addition to the significant contribution of electric vehicles to energy consumption and carbon emissions, the fact that they are quiet and highly sustainable in terms of use causes an increase in demand. Buses, which are a type of public transportation vehicle among vehicles, are of great importance for transportation, providing fuel savings for society in general and being a solution to the traffic problem. Gathering two separate phenomena such as electricity and a bus under one roof raises the impact values of the concepts to a higher level. In addition to having systemic differences, electric vehicles should be put into use in a way that is ready to provide long-term service in operating conditions, similar to conventional vehicles. To prove the readiness for use of the vehicles, they are subjected to multiple stages of testing simulating real operating conditions. At the end of the test process, if the vehicle meets the predetermined criteria, the test process is completed, and the vehicle is approved. In this study, two different battery electric bus models were subjected to road endurance tests and critical parts were determined and product reliability was ensured by making product development studies. The results of the study revealed the areas that should be considered in terms of periodic maintenance in electric vehicles.
Corrugated sheets are sheet parts used in various applications. The shapes of parts are dominators in mechanical behavior. Structural reliability is related to the ability of the structure to remain within the desired range of stress and deformation values according to the load type. The use of corrugated plates on platforms for load-bearing both prevents the use of thick materials for strength and ensures that the structure created is light. In this study, corrugated plate samples that have 100 mm width and 2 mm thickness were comthepared by the finite element method. Corrugated plate models such as pentagon, circle, supported rectangle, rectangle, square, saw, and trapeze were designed and evaluated under 20 kg load that was t applied on the surface of 50 mm width. Results showed that the trapeze model is the most rigid and circle has the least stress value model. The study revealed the effect of the corrugate model on the structural strength for plates, which are frequently used in industrial applications.
Bone tissue loss may occur in bone structures, which are one of the elements that provide the body’s endurance and movement of living things, due to situations such as falling, hitting, or cancer formation. In bad scenarios, applications such as an external plate or internal rod addition are made to regain the old durability of the structure. At the same time, full or semi-prosthesis applications can be made in cases where the original bone structure cannot be preserved. With today’s advanced possibilities, lattice structures can be produced effortlessly with the additive manufacturing (AM) method. Here, the formation of the structure that can show anisotropic behavior depending on the production and the effect of the roughness caused by the production quality should also be seen in the process plan. In this study, it was aimed to compare the durability of titanium (Ti-6Al-4V) and magnesium (ZK60) materials for humeral half prosthesis using cubic-based lattice structure and to show their differences compared to the original bone structure. Maximum stress and deformation values were obtained by performing analyses with the finite element method on the lattice semi-humerus prosthesis obtained with this aim. Reliability analysis was made on the data obtained, and parameter optimization of the lattice structure was aimed. As a result of the study, it was seen that the lattice structure with 65% porosity compared to the reference values is reliable and with the same reliability rate, magnesium provides approximately 60% lightness compared to titanium.
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