Güncel Gönderiler: Makine Mühendisliği Bölümü
Toplam kayıt 117, listelenen: 81-100
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Analyzing the diffusion weldability of copper and porcelain
(Carl Hanser Verlag, 2016)Diffusion welding is one of the exclusive welding methods that provides a perfect material interface after joining of different materials and results in high mechanical properties at high temperatures. In particular, this ... -
Computer-aided ergonomic analysis for assembly unit of an agricultural device
(Wiley-Blackwell, 2016)In many applications, those who work on assembly processes are required to work in nonergonomic stances. Incorrect positions may cause strain and persistent problems. In addition, strain in workers' bodies also has a ... -
Experimental investigation of a novel machining strategy for rough turning using variable feed rate
(Springer London Ltd, 2016)The life of a tool is affected by many factors such as cutting speed, depth of cut, chip thickness, tool geometry, workpiece material, cutting fluid and the rigidity of the machine tool. This paper introduces the innovative ... -
Effect of matrix structure and boriding time on the wear behaviour of Cu-Ni-Mo alloyed ductile iron
(Gazi Univ, 2017)In this study, effects of matrix structure (pearlitic, tempered martensitic and ausferritic) and boriding time (3, 4,5 and 6 hours) at 800 degrees C on the wear behaviour of Cu-Ni-Mo alloyed ductile iron were investigated. ... -
Assessment of thermodynamic and environmental performances in subcooling process for different refrigerants
(Inderscience Enterprises Ltd, 2017)Subcooling application in cooling processes leads to increasing of cooling performance and energy efficiency within defined limits. This study examines subcooling effects of refrigerants on the coefficient of performance ... -
Effect of heat treatment on the impact toughness of 'high-chromium cast iron - low alloy steel' bimetal components
(Springer, 2017)A bimetallic 'low-alloy steel - high-chromium cast iron' composite obtained by successive sand casting is studied and shown to have good cohesion on the interface and no casting defects. The hardness and the impact toughness ... -
Bolted joints in three axially braided carbon fibre/epoxy textile composites with moulded-in and drilled fastener holes
(Springer, 2017)Experimental behaviour of bolted joints in triaxial braided (0 degrees/+/- 45 degrees) carbon fibre/ epoxy composite laminates with drilled and moulded-in fastener holes has been investigated in this paper. Braided laminates ... -
Thrust performance evaluation of a turbofan engine based on exergetic approach and thrust management in aircraft
(Walter De Gruyter Gmbh, 2017)The environmental parameters such as temperature and air pressure which are changing depending on altitudes are effective on thrust and fuel consumption of aircraft engines. In flights with long routes, thrust management ... -
Evaluation of approaches used for optimization of stand-alone hybrid renewable energy systems
(Pergamon-Elsevier Science Ltd, 2017)CdO and CdO:F films were prepared by ultrasonic spray pyrolysis method on glass substrates at temperature of 250 +/- 5 degrees C. The structural and optical properties of pure and fluorine doped CdO films were characterized ... -
Surface roughness analysis of greater cutting depths during hard turning
(Carl Hanser Verlag, 2017)Literally, hard machining describes machining of parts having hardness over 45 HRC. Besides its advantages like high metal removal rate, easiness of adapting to complex part geometries, possibility of dry cutting; this ... -
Assessment of degradation effects for an aircraft engine considering exergy analysis
(Pergamon-Elsevier Science Ltd, 2017)Despite the improvements in engine technology, the combustion processes and wear occurred in engine components affect performance adversely. The turbine and compressor fouling, degradation mechanisms such as erosion, ... -
Mechanical performance of marine sandwich composites subjected to flatwise compression and flexural loading: Effect of resin pins
(SAGE Publications Ltd, 2018)Mechanical performance of marine sandwich panels comprising E-glass/vinyl ester face sheets and perforated poly-vinyl chloride foam core was evaluated and compared with conventional foam core sandwich panels. Circular ... -
A new model for exergetic optimum insulation thickness
(Inderscience Enterprises Ltd., 2017)A new approach is presented to predict the exergetic optimum insulation thickness and the payback period. The calculation method consists of four innovations, namely, heating/cooling degree-hour figures for any given time ... -
Compression after low velocity impact tests of marine sandwich composites: effect of intermediate wooden layers
(Elsevier Sci Ltd, 2018)In the present work, compression after impact (CAI) behavior of sandwich composite materials with intermediate wooden layers was investigated. Sandwich panels were manufactured by using vacuum assisted resin transfer molding ... -
Bolted joints in quasi-unidirectional glass-fibre NCF composite laminates
(Elsevier Sci Ltd, 2018)In this study, crossply and quasi-isotropic quasi-unidirectional (quasi-UD) non-crimp fabric (NCF) glass/epoxy laminates were manufactured by using vacuum assisted resin transfer moulding (VARTM) and tested according to ... -
Calculation of fuel consumption and emissions in buildings based on external walls and windows using economic optimization
(Gazi Univ, 2018)In this study, emissions and fuel consumption calculations are made based on external walls and windows by using economic optimization in the buildings of Aydin, Amasya, Eskisehir and Ardahan located in four different ... -
A new risk assessment approach for the analysis of musculoskeletal disorders
(Gazi Univ, 2018)In this study a new risk assessment method for the evaluation of musculoskeletal disorders is proposed. "Musculoskeletal Discomfort Questionnaire" which was developed by Cornell University and widely used in the literature ... -
Assessment of energy and environmental performance of low-charge multiplex refrigeration system
(Springer, 2018)Low-charge multiplex refrigeration system (LCMRS) used in supermarket application is defined as low-energy performance in cooling system considered as important energy consumers. In this context, this study primarily ... -
Experimental investigation of pinned joints in ncf glass-fibre reinforced composite plates
(Gazi Univ, 2018)In this study, mechanical behaviour of quasi-unidirectional (quasi-UD) non-crimp fabric (NCF) reinforced composite plates with pinned joints was investigated experimentally. Composite laminates with three different cross-ply ... -
Evaluation of tool wear for hard turning operations through response surface methodology
(Gazi Univ, 2018)In the present work, the relationship between tool wear and the cutting parameters (cutting speed, V-c; feed, f; depth of cut, a(p)) was investigated in hard part turning operations of cold work tool steel (AISI D2) hardened ...
