Abdulkadir Yasar

• Professor
• Professor (Full) at Cukurova University

Due to environmental concerns and sustainability issues, researchers have focused on developing novel composite structures in different industries. In this study, aramid and basalt fiber reinforced polymer hybrid composites were designed and manufactured as an alternative material to carbon fiber reinforced polymer (CFRP) composites. The hybrid com...

Makine parçaları korozyon ve aşınma gibi malzeme yüzeylerinde hasara neden olan çeşitli etkilere maruz kalmaktadır. Malzeme yüzeylerinin bu zararlı etkilerden korunması için çeşitli ve etkili yöntemler bulunmaktadır. Elektrokimyasal kaplama bu yöntemlerden en çok tercih edilenlerden bir tanesidir. Bu çalışmada, Ni-B alaşımı ana yapısı titanyum karb...

In this experimental work, Ni–B/TiC nanocomposite coatings were deposited on a stainless steel substrate by conventional electrodeposition method and their features such as hardness, crystalline structure, corrosion and wear behavior were investigated. Furthermore, the same method was carried out in order to produce pure Ni and Ni–B alloy coatings...

In this study, composite coatings with NiB alloy main structure reinforced with TiC nanoparticles were coated on a stainless steel substrate by electrodeposition method. The microhardness and crystal structures of the produced nanocomposite films were examined and the relations between the obtained results and the production parameters were discuss...

Ni-B alloy coatings can be successfully applied in many industries thanks to their superior properties such as high hardness, high wear resistance and good corrosion resistance. In this study, Ni-B alloy coatings were deposited on a stainless steel substrate at different current density values by conventional electrochemical coating method. A tradi...

This paper reveals the results of metallic-based nanoparticle's effect on the performance, emission, and vibration of a diesel engine. Various metal-based nanoparticles such as Nickel (II) nitrate hexahydrate (Ni(NO 3) 2 .6H 2 O), Silver nitrate (AgNO 3), and Manganese (II) nitrate hydrate (Mn(NO 3) 2 .xH 2 O) were chosen as fuel additives into die...

Electricity is the most substantial energy form that significantly affects the development of modern life, work efficiency, quality of life, production, and competitiveness of the society in the ever-growing global world. In this respect, forecasting accurate electricity energy consumption (EEC) is fairly essential for any country's energy consumpt...

Bu çalışmada, Watts tipi nikel banyosunda Ni-B alaşım anayapılı ve TiB2 mikro parçacık takviyeli kompozit kaplama, paslanmaz çelik altlık üzerine depolanmıştır. Elde edilen kompozit kaplamanın özellikleri saf nikel ve Ni-B alaşım kaplamalar ile mukayese edilerek incelenmiştir. Takviye parçacıkların etkisini belirlemek amacıyla kristal yapı, mikrose...

Bu çalışmada, St37 çelik altlık üzerine elektrokimyasal olarak depolanan nikel-bor (Ni-B) alaşım ana yapılı ve titanyum diborür (TiB2) takviye parçacık destekli kompozit kaplamaların korozyon davranışları saf nikel ve Ni-B alaşım kaplamalar ile mukayese edilerek incelenmiştir. Üretilen kaplamalar Watts tipi geleneksel nikel banyosunda depolanmıştır...

In this experimental study, silver nitrate (AgNO3) – tetraamin palladium (II) nitrate solution (Pd(NO3)2·4NH3) – titanium dioxide (TiO2) based catalyst was synthesized with the impregnation method for hydrocarbon-selective catalytic reduction (HC-SCR) system. In this system, 2-propanol and different mixtures of 2-propanol and adBlue were used as re...

In current study, exhaust emission, vibration and noise features of diesel engine with addition of metallic based nanoparticles into diesel fuels were investigated experimentally. Various nanoparticles called as silver (II) nitrate (AgNO3), manganese (II) nitrate hydrate (Mn(NO3)2. xH20) and nickel(II) nitrate hexahydrate (Ni(NO3)2.6H2O) were used...

Bu çalışmada, nikel esaslı alaşım ve nanokompozit kaplamalar elektrokimyasal depolama metodu ile paslanmaz çelik altlık üzerine üretilmiştir. Watts tipi nikel banyosuna bor kaynağı olarak trimetilamin boran (TMAB) ilave edilerek Ni-B alaşım kaplama elde edilmiş, daha sonra buna ilave olarak banyoya titanyum diborür (TiB2) seramik nano parçacıkları...

In this study, monthly total heat loss (evaporative and convective heat losses) and exergy flow that occur as a result of respiration were determined for human bodies in states of light and heavy activity levels, and comparisons of the results obtained were made according to different meteorological conditions and regions. For this purpose, seven d...

Coating processes are of great importance for protecting the materials used in the industry from the damaging effects of external environments and mechanical forces. There are a wide variety of coating methods, but the electrochemical deposition method within them is one step ahead because of its low cost, easy manufacturability and rapidity. Ni–B...

Selective Catalytic Reduction (SCR) is an emission control system used in diesel engines to reduce NOx emissions. In this study, synthesized of catalyst for SCR system was investigated as experimentally. For this purpose, silver nitrate (AgNO3), niobium (V) chloride (NbCl5) and tetra amine platinum (II) nitrate (Pt(NH3)4(NO3)2) were used to coat th...

This experimental study reports the results of emission and vibration characteristics of compression ignition (CI) engine with variable compression ratios (VCR) using nanoparticles added to diesel fuels. Three different nanoparticles namely, titanium (IV) dioxide (TiO2), copper (II) nitrate (Cu(NO3)2) and cerium (III) acetate hydrate (Ce(CH3CO2)3·H...

This experimental study was focused on use of CuNO3 as a fuel additive with butanol-diesel blends in diesel engine and its effects on fuel specifications and emission characteristics. With this purpose, CuNO3 nano additive was mixed with diesel-butanol and each test fuel was analyzed to determine fuel specifications (density, viscosity, Cetane numb...

Influence of biodiesel-diesel fuel blends with acetylferrocene and palladium based additives on diesel engine performance and emissions were studied experimentally. The additives were dosed into the blend fuels as 25 ppm. Bis-[N,N-dimethyl-N′-2-chlorobenzoylthioureato] palladium (II), PdL2 was prepared as palladium based additive. The engine tests...

In this study, the effects of metal titanium dioxide and butanol additives on engine performance, combustion, emissions, vibration and noise characteristics were investigated experimentally. The experiments were conducted at various partial load conditions with diesel engine having variable compression ratio. Engine was fuelled with diesel fuel and...

The operation of modern horizontal axis wind turbine (HAWT) includes a number of important factors, such as wind power (P), power coefficient (CP), axial flow induction factor (a), rotational speed (Ω), tip speed ratio (λ), and thrust force (T). The aerodynamic qualities of these aspects are evaluated and discussed in this study. For this aim, the...

In this study, mechanical and thermal properties of boron containing polyethylene and polyurethane was investigated. Manufacturing and characterization are main parts of the experimental study. Samples are manufactured by extruder, then tensile and impact tests samples is obtained by injection molding. Data showed that there is no significant decre...

Application of mathematical modelling and numerical methods is a key element of optimum vehicle in this study, the effects of various materials, fillet radius and diameter of an engine valve on stress concentration error were investigated. Multiple regression analysis was employed to derive the predictive equations of the Von Mises Stress and displ...

In this study, performance and emission characteristics of a variable compression ratio (VCR) diesel engine fuelled with diesel fuel and diesel-biodiesel-alcohols blends have been evaluated in detail. The results of performance and emission characteristics of fuel blends were compared with low sulphur diesel fuel. Experimental study showed that bio...

In this study, energy and exergy analyses were applied to experimental data obtained from a four stroke, four cylinders, naturally aspirated, having 1800 rpm direct-injected diesel engine in case of using various fuels. Air and fuel flow rates, engine speed, emissions and relevant temperatures are taken into consideration to be able to perform the...

This study aims to determine the wind characteristics and wind power potential of the Gelibolu peninsula in the Çanakkale region of Turkey. For this purpose, hourly average wind data observed at the Gelibolu meteorological station were used. The Weibull probability density functions and Weibull parameters of time-series of wind speed, mean wind spe...

This study aims to determine the wind characteristics and wind power potential of the Gelibolu peninsula in the Çanakkale region of Turkey. For this purpose, hourly average wind data observed at the Gelibolu meteorological station were used. The Weibull probability density functions and Weibull parameters of time-series of wind speed, mean wind spe...

The purpose of this study is to design rigid and lightweight chassis for an electric vehicle. Design criteria and constraints are obtained from the TÜBİTAK electromobile racing rules. Various chassis types with different geometries are considered and 18 units of chassis are designed using Computer Aided Design (CAD) software. Designs are analysed u...

This work presents an experimental investigation on energy and exergy performance characteristics of a typical residential split air conditioning system. Analyses are performed for different atmospheric temperatures. On the basis of experimental data coefficient of performances (COP), exergy efficiencies (psi) and exergy destructions ((E)over dotx(...

In this paper, exergy analysis was implemented to improve the inter-city bus air-conditioning (AC) system design. Firstly, an inter-city bus with a passenger capacity of 56 people was selected and then its hourly cooling load capacity was determined with the help of cooling load hourly analysis program (HAP). Analyses were performed for different a...

The main challenge in today's vehicle industry is to implement the increasing demands for higher performance, longer life, and lower weight of components so as to satisfy fuel economy demands, at a realistic cost using new safety requirements. In this work, optimum design parameters of the car chassis were examined by taking into account different...

Wind turbine aerodynamic characteristics play a vital role in condition monitoring and control of wind turbines in a wind power plant. Today, the most common design of wind turbine is the horizontal axis wind turbine. In this study, horizontal axis wind turbine aerodynamic characteristics including wind power (P), power coefficient (CP), axial flow...

In this study, fuel properties, performance and emission characteristics of sunflower biodiesel and its blends with diesel fuel and alcohols has been evaluated. Blend ratios used in this study were diesel-biodiesel-methanol (50-30-20% by volume) and diesel-biodiesel-propanol (50-30-20% by volume). Experiments showed that alcohol blends improved the...

The most prominent challenge in today's vehicle industry is how to cope with the accretive demand for ever higher performance, longer life, safety and lower weight of components so that fuel economy requirements can be achieved at realistic cost levels. Chassis of a truck is the skeleton for a vehicle providing structural strength and mounting poin...

The pure biodiesel is not widely used in diesel engines due to its high viscosity leading to the fuel droplet size, poor atomization qualities and fuel penetration in the cylinder which is very vital in terms of engine performance and emissions. Therefore it is important to balance the biodiesel's high viscosity with alcohol additives and positivel...

In this study, tensile and fatigue behavior of glass fiber-reinforced (MAT-8)/polyester automotive composite was investigated experimentally. The composite used in this study consists of polyester, fiber and gelcoats. The fiber contents were kept constant at 37 wt% during the tests. But, polyester and gelcoat contents were changed. The tests were c...

In this study, performance and exhaust emissions of a diesel engine fueled with Fuel A (60% diesel–30% biodiesel–5% ethanol–5% butanol) and Fuel B (40% diesel–50% biodiesel–5% ethanol–5% butanol) were investigated. The biodiesel produced from trap grease was obtained with an oil separator. Fuel A and Fuel B were tested in a single cylinder, four-st...

This paper deals with predicting the performance of a split air conditioning (SAC) system using artificial neural network (ANN) approach. For this aim, an experimental R-22 split air conditioning system was developed and equipped with instruments used for temperature, pressure, current and power measurements. The experimental system was operated at...

The main objective of the present study is to apply the nonlinear regression (NLR) model in order to forecast water demand in Adana city of Turkey. The average monthly water bill, total subscribership, atmospheric temperature, relative humidity, rainfall, global solar radiation, sunshine duration, wind speed and atmospheric pressure are selected as...

In this study, influences of the plugging in the evaporator filters and condenser coils on the system performance were examined in a wall type split air conditioning system. In an original air conditioning system designed for digital experimental measurements, the changes in operating parameters such as temperature, pressure, thermal capacity, c...

The main objective of the present study is to apply the artificial neural network (ANN) methodology, linear regression (LR) and nonlinear regression (NLR) models to estimate the electricity consumptions of the residential and industrial sectors in Turkey. Installed capacity, gross electricity generation, population and total subscribership were sel...

The use of split-type air conditioners (STAC) is very popular in residential and commercial buildings and demand for these types of air conditioners is increasing year by year. Theoretical and practical case studies for fault detection and diagnosis of STAG constitute a vital part in technical services and refrigeration/air-conditioning laboratorie...

Wind power, as a renewable source of energy, produces no emissions and is an excellent alternative in environmental terms to conventional electricity production based on fuels such as oil, coal or natural gas. At present, the vast majority of wind power is generated from onshore wind farms. However, their growth is limited by the lack of inexpensiv...

The aim of this study is to estimate the monthly mean relative humidity (MRH) values in the Aegean Region of Turkey with the help of the topographical and meteorological parameters based on artificial neural network (ANN) approach. The monthly MRH values were calculated from the measurement in the meteorological observing stations established in Iz...

It is utilized increasingly to use adhesive bonding in automotive industry to join structural components of metallic materials. The aim of this experimental study is to extend the information available to the automotive design engineer and contribute the better understanding of how the various geometrical shaped of steel parts affect the adhesive b...

It is utilized increasingly to use adhesive bonding in automotive industry to join structural components of metallic materials. The aim of this experimental study is to extend the information available to the automotive design engineer and contribute the better understanding of how the various geometrical shaped of steel parts affect the adhesive b...

In the experimental study, tall oil fatty and resinic acids were investigated as alternative diesel fuels. The fatty acids, obtained by distilling the crude tall oil, were esterified with methanol in order to obtain tall oil methyl ester (biodiesel). Blends of the methyl ester, resinic acids and diesel fuel were prepared for test fuels. Performance...

In this study, the effect of methanol or butanol addition to gasoline on exhaust emissions and noise level has been experimentally investigated. Results showed that the concentrations of CO and NO_x emissions were decreased depending on the higher alcohol contents and the carbon monoxide concentration of gasoline was higher than that of m...

In this study, the effects of seasonal weather differences city on the bio-heat losses from the human body have been investigated in Antalya. For application, the monthly atmospheric temperature, relative humidity, wind speed and atmospheric pressure data, which are observed in 2006, have been used. The sensible and latent heat losses from the huma...

In this study, the effects of seasonal weather differences in Antalya city on the bio-heat losses from the human body have been investigated. For application, the monthly atmospheric temperature, relative humidity, wind speed and atmospheric pressure data, which are observed in 2006, have been used. The sensible and latent heat losses from the huma...

In this study, the effect of methanol or butanol addition to gasoline on exhaust emissions and noise level has been experimentally investigated. Results showed that the concentrations of CO and NOx emissions were decreased depending on the higher alcohol contents and the carbon monoxide concentration of gasoline was higher than that of methanol or...

In this study, artificial neural networks (ANNs) were applied to predict the mean monthly wind speed of any target station using the mean monthly wind speeds of neighboring stations which are indicated as reference stations. Hourly wind speed data, collected by the Turkish State Meteorological Service (TSMS) at 8 measuring stations located in the e...

In this study, the characteristics of flow emerging from the inlet of the intake port in the cylinder were investigated experimentally. A particle image velocimetry (PIV) technique was used to measure the velocity distribution in order to observe and analyse the flow behaviour. High-image-density PIV provided acquisition of patterns of instantaneou...