Browsing Makine Mühendisliği Bölümü / Department of Mechanical Engineering by Title
Now showing items 50-69 of 79
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Measurement and assessment of fatigue life of spot-weld joints
(Asme-Amer Soc Mechanical Eng, 2009-01)Spot-weld joints are commonly used to fasten together metal sheets. Because fatigue fracture is the most critical failure mode for these joints under fluctuating loads, understanding their fatigue failure behavior and ... -
Mechanical and thermal modeling of orthogonal turn-milling operation
(Elsevier Science BV, 2017)Turn-milling is a relatively new machining technology which is performed for cutting of symmetrical or non-symmetrical rotational parts. To improve productivity, determination of cutting parameters in turn-milling is ... -
A microwave kinetic inductance detector for the DAG telescope
(SPIE, 2016)We present the details of a proposed microwave kinetic inductance detector (MKID) for the DAG (Eastern Anatolia Observatory in Turkish) telescope, DAG-MKID. The observatory will have a modern 4m size telescope that is ... -
Modelling and simulation studies on adaptive controller for alt-azimuth telescopes despite unknown wind disturbance and mass
(SAGE Publications, 2020-09-15)Numerous ground-based observatories are using small sized ground telescopes for scientific research purposes. The telescopes that are available on the market have three main problems. These issues can be listed as: positioning ... -
Numerical investigation of the effect of radial lip seal geometry on sealing performance
(IOP Publishing Ltd, 2018)Sealing elements are often needed in industry and especially in machine design. With the change and development of machine technology from day to day, sealing elements show continuous development and change in parallel ... -
Observatory building design: A case study of DAG with infrastructure and facilities
(SPIE, 2018-07-29)[No abstract available] -
Observatory building design: A case study of DAG with infrastructure and facilities
(SPIE, 2016-08-19)Eastern Anatolian Observatory (DAG), will be built in one of the well-known mountain ridges of Erzurum, Turkey, at latitude of 39°46'50, longitude of 41°13'35 and an altitude of 3.151 meters. As well as erecting the largest ... -
Observing with DAG: performance metrics of imaging and spectroscopy
(Türk Astronomi Derneği, 2020-12-11)DAG telescope will be designed as a telescope with adaptive optics and seeing limited modes of observation. Its primary mirror will be a thin meniscus, controlled in shape by an active optics system. This implies specific ... -
OPAM tarafından üretilen derotator sistemi ve TROIA (Turkish Adaptive Optics System for Infrared Astronomy) adaptif optik sistemi
(Türk Astronomi Derneği, 2020-12-11)DAG teleskopu için FMV Işık Üniversitesi Optomekatronik Uygulama ve Araştırma Merkezi’nde (OPAM) son tasarımı başarıyla bitirilerek, üretim aşamasına geçilen derotator ve adaptif optik (TROIA) sistemleri tanıtılacaktır. -
Optical design of the adaptive optics system for DAG, the new 4 m Turkish telescope
(SPIE, 2020)We present the design of the Adaptive Optics System for the new Turkish 4-m telescope (DAG). The AO will use a pyramid WFS, with a double prism and a no noise EM-CCD camera to allow for oversampling of the pupil images and ... -
Optimal abs frenleme kontrolcüsünün geliştirilmesi
(Tübitak, 2015-03)Günümüzde taşıtlarda kullanılan ticari ABS sistemleri, frenleme sırasında tekerleklerin dönme hızlarını ölçmekte, tekerleklerin yavaşlama ivmesi belli bir kritik eşik değerini aştığında fren basıncına müdahale ederek ... -
Production of M1, M2 and M3 mirrors for DAG project (Belgium, Russia). Current status
(SPIE-Int Soc Optical Engineering, 2018)This paper describes the technology of production and testing of mirrors for DAG Telescope (Doge Anadolu Gozlemevi) produced by Belgium Company AMOS. JSC LZOS fulfils works on production and testing of three mirrors: primary ... -
Project management and status update for DAG (Eastern Anatolia Observatory) the 4 meter VIS/IR optical telescope
(SPIE-Int Soc Optical Engineering, 2018)The new 4 m Turkish telescope, DAG (East Anatolian Observatory, Fig. 2), will be located on the summit of the mountain Konakli-Karakaya, at an altitude of 3170 m, near the city of Erzurum, Turkey. First light is expected ... -
Project management of DAG: Eastern Anatolia Observatory
(SPIE, 2016)The four meter DAG (Eastern Anatolia Observatory in Turkish) telescope is not only the largest telescope in Turkey but also the most promising telescope in the northern hemisphere with a large potential to offer scientific ... -
A quasi-one-dimensional bubbly cavitating flow model and comparison with experiments
(European Turbomachinery Soc-Euroturbo, 2011)A bubbly cavitating flow model is constructed for unsteady quasi-one-dimensional and two-dimensional nozzle flows. In each case, the system of model equations is reduced to evolution equations for the flow velocity and ... -
A refinement of asymptotic predictions and full numerical solution of helicopter rotor noise in the far field
(Multi-Science Publ Co Ltd, 2012-09-01)The asymptotic analysis of Parry and Crighton [1] for propeller noise in the far field, which is based on Hanson's formulation [2] of the FW-H equation, is refined to second order by Laplace's method [3] for evaluating ... -
Self optimizing ABS control algorithm with application
(Institute of Electrical and Electronics Engineers Inc, 2015)A self optimizing control algorithm is applied to the ABS control problem where the algorithm accomplishes to maximize friction potential of the tires during braking in unknown road conditions. Simulation studies are ... -
Semianalytical solution of unsteady quasi-one-dimensional cavitating nozzle flows
(Springer, 2014-06)Unsteady quasi-one-dimensional bubbly cavitating nozzle flows are considered by employing a homogeneous bubbly liquid flow model, where the nonlinear dynamics of cavitating bubbles is described by a modified Rayleigh-Plesset ... -
Shocks in quasi-one-dimensional bubbly cavitating nozzle flows
(Springer Berlin Heidelberg, 2013-01-01)Stationary and propagating shock waves in bubbly cavitating flows through quasi-one-dimensional converging-diverging nozzles are considered by employing a homogeneous bubbly liquid flow model, where the nonlinear dynamics ...