This study aims to investigate the mechanical properties of Functionally Graded Lattice Structures (FGLSs) and to determine their industrial application possibilities through additive manufacturing. For this purpose, lattice structures with uniform and horizontal, vertical and radially graded configurations are designed using auxetic unit cells were fabricated with RGD720 photopolymer resin using Material Jetting. FGLSs are compared with uniform structures in regards with deformation behavior, structural strength and energy absorption. The results showed that the most significant deviation in the strut diameters of the uniform lattice structures was seen in the rotation lattice structure at 8.2%. The lowest deviation was seen in the chiral structure, which deviated by 5.4%. The lowest deviations (between 3.4% and 9%) in FGLSs were obtained in chiral structures. The highest relative density value (0.3049 g/cm³) among all configurations was observed in the vertically graded chiral structure. The lowest relative density value (0.1865 g/cm³) was obtained in uniform re-entrant structures. According to the compression test results, the highest compressive stress (2.61513 MPa) and elastic modulus (84.63192 MPa) were formed in the rotation structure. The maximum energy absorption capacity value (19.381 KJ) and the maximum specific energy absorption value (3649.905 KJ/kg) were obtained in the uniform chiral structure.

Digital Human Modeling (DHM) is an integral part of computerized engineering studies. In this study, an assembly fixture has been designed that will be used in the assembly of the helicopter transmission and it has been analyzed for compliance of ergonomic conditions using DHM technique. Rapid Upper Limb Assessment (RULA) and Biomechanical Motion Analyses (BMA) were used in the analyses. The ergonomic competence of the human was analyzed empirically for two different assembly conditions. The assembly fixture redesigned has significant ergonomic advantages over the conventional ones. According to the analyses was provided that 79.6 % advantage in compression loading and 94.3 % advantage in moment loading, which occurs on the L4-L5 lumbar vertebra discs. As a result, it was revealed that the ergonomic assembly fixture designed for workers to work in a more comfortable and safe manner was suitable for its purpose.

In this study, a detailed research was carried out to solve the two-stage planetary gearbox design optimization problem by using nature-inspired optimization methods. Seven different nature-inspired meta-heuristic optimizers were applied to minimize the volume of the planetary gear. The recent optimizers, Grey Wolf Optimizer, Artificial Bee Colony, Multi-verse Optimizer, Cuckoo Search, Whale Optimization Algorithm and Salp Swarm Algorithm methods were applied to the problem for the first time. The optimal volume values obtained with the seven different optimizers are much better than the best values known in the literature. The best fitness value obtained is 30% better than the best known in the literature.

İç mimari tasarımların gereklerinin başrollerinden birisi de mekân aydınlatmasıdır. Doğru tasarlanmış bir aydınlatma ile mekânların ergonomik kullanımı mümkün kılınmaktadır. Mekanda kurgulanmak istenen konsept, kullanım amacı ve fonksiyonellik doğru aydınlatma tasarımı ve kullanımıyla gerçekleşebilmektedir. Son yıllarda popüler olan kişiselleşmiş tasarımlar, aydınlatma sektöründe de önemli bir kriter olarak yerini almaktadır. Bu çalışma kapsamında, ortak yaşam alanını kullanan bireylerin, aynı anda farklı şiddette ışığa ihtiyaç duyabileceği öngörülerek yeni bir aydınlatma elemanı TRIZ metodolojisinden faydalanılarak tasarlanmıştır. Aynı mekânda hem aydınlık hem de loş ışık olmasının istenmesi, TRIZ metodolojisine göre bir fiziksel çelişki örneğidir ve bu problem, zamanda ve mekanda ayırma yöntemlerinin prensipleri ile çözülmüştür. Tasarlanan yeni aydınlatma elemanı ile yurt ve otel gibi paylaşımlı alanlarda, kişilerin farklı ihtiyaçlarına çözüm olabilecek ayarlanabilen ışık seviyeleri ve odak noktaları sağlanmıştır.