In this study, friction performance, surface textures, and wear mechanisms of Titanium Grade (Gr) 2 material were investigated with a pin-on-disc tester. The study was carried out under dry, basefluid (vegetable-based oil), graphene nanoplatelets (GNPs), hexagonal boron nitride (hBN) nanofluids, GNPs+hBN hybrid nanofluid conditions. addition, the fluid's viscosity thermal conductivity coefficient measurements out. As performance criterion test, (COF), vibration peak values, roughness (Ra...

Electrical discharge machining (EDM) provides many advantages for the shaping of metallic materials. It also better surface quality Ti alloys used in defense industry. In this study, experiments were carried out with different EDM parameters using Titanium (Gr2) alloy. A number novel industrial processes have been developed as a result advances technology. For product to be developed, these approaches must utilized determine optimum parameters. The Taguchi method was applied EDM. impact test...

Abstract In this study, an eco‐friendly brake composite sample (EFP) was produced with 3.5% hazelnut shell dust as a natural additive material. Friction tests were performed on the manufactured pad and commercial (CP) using both Chase‐type test machine specially designed device. A different approach is presented evaluation of two device results. The experimental results compared Taguchi method it concluded that braking performance in accordance international standards. As result study;...

Purpose The purpose of this study is to investigate the effect new green hexagonal boron nitride (hBN) nanofluid on AISI 316L stainless friction coefficient, wear resistance and using a ball disc tester. Design/methodology/approach Nanofluids were prepared by adding hBN nanoparticles with two-step method vegetable-based oil at 0.50 vol%. Before experiments, viscosity, pH thermal conductivity specifications determined. Friction tests steel performed under 2 N, 5 N 8 loads 400 rpm ball-on-disc...

Purpose The purpose of this study was to optimize the surface roughness (Ra), delamination damage at hole entrance (FdT) and exit (FdB) kerf angle (K) in drilling aramid fiber-reinforced polymer (AFRP) composite material using abrasive water jet (AWJ) machining. Design/methodology/approach AFRP produced by vacuum infusion method. experiments were performed on an AWJ machine a three-axis computerized numerical control system. Machine processing parameters determined as pressure (2,000, 3,000...

In the production of brake pad composites, a well-designed new composition formulation plays key role in improving performance. The purpose this study; was to investigate effectiveness specifically developed under brake-test conditions. lining consists 18 powder materials. As friction adjuster, Petro-coke used instead Cashew, which is cheaper and more readily available. wear tests were carried out special design test device simulated close real environment. results obtained have been...

Tribology is one of the most important issues for repair and regeneration living tissues in human body, as it deals with wear, lubrication, friction interrelated surfaces. Hydrogels show potential cartilage agents due to their biocompatibility behave similarly lubricating mechanisms found tissue. Cryogels, which are included class hydrogels, more stable than hydrogels terms mechanical strength, references tribological properties these polymers literature have been minimal so far. In this...

Cryogenic treatment has been used in recent years to improve the performance of cutting tools. This study evaluated machinability a nickel–molybdenum-based super alloy using cryogenically treated (–80 ℃ and –145 ℃) ceramic inserts under dry turning conditions. Three speeds (350, 400, 450 m/min), three feed rates (0.1, 0.2, 0.3 mm/rev), 1-mm fixed depth were tests. Experiments conducted Taguchi orthogonal array L 27 design. The factors affecting surface roughness (Ra) determined via analysis...

Along with the developing technology, expectations for improved automobile brake pads are also rising. Research on higher performance is contin-uing at a rapid pace. It recognized that in this field, widespread efforts being made towards production of which economical, envi-ronmentally friendly and do not pose risks to human health. In recent years, non-industrial waste products have been used as additives pads, thus contributing local economy. Performance tests be carried out so produced...

Purpose The purpose of this study is to optimize processing parameters get the smallest average surface roughness ( Ra ) and delamination damage F d values during drilling via abrasive water jet (AWJ) glass fiber-reinforced polymer composite material produced at [0°/90°] s fiber orientation angles. Design/methodology/approach Drilling experiments were done AWJ with three-axis computer numerical control (CNC) system. Machine such as pressure 3,600, 4,300, 4,800 5,300 bar; stand-off distance...

Bu çalışmada kriyojenik işlem uygulanmış nikel esaslı süper alaşımın elektro erozyon işleme (EEİ) ile işlenme performansı araştırılmıştır. amaçla ısıl dirençli alaşıma sığ ve derin uygulanmıştır. Deneylerde kullanılan parametreler deney maliyetini azaltmak için Taguchi L 9 ortogonal diziyle tasarlanmış olup elde edilen sonuçlar istatistiksel olarak incelenerek işlemin yüzey pürüzlülüğü malzeme aşınma kaybı (MAK) etkisi Her iki çıktı parametresi en ideal parametrelerin belirlenmesinde ise...

After the realization that asbestos fiber is harmful to human health, efforts produce organic and environmentally friendly brake pads have increased. In this study, an pad (NUS sample) was produced with addition of 3.5% hazelnut shell powder. Hardness density measurements sample were made. Chase type device used for wear friction tests. The experiments done according SAE J661 standard. average coefficient value obtained as a result found be 0.435 µ. Bu değer standartlara uygundur ve “FF”...

In this study, the effects of cutting speed, feed rate and different types coating materials on thrust force hole diameter were investigated in drilling AISI D2 cold work tool steel.In addition, forces diameters predicted by artificial neural networks (ANN) using experimental data.Uncoated, TiN, TiAlN monolayer TiAlN/TiN multi-layer coated cemented carbide drills with 5 mm used experiments.The holes drilled at combinations four speeds (50, 55, 60, 65 m/min), two rates (0.063 0.08 mm/rev),...

In recent years, cryogenic treatment has been applied to improve the performance of cutting tools. Improving tools can surface qualities workpiece and reduce costs. Nickel-based superalloys are difficult machine. It is necessary machinability properties these hard-to-machine alloys increase product quality. this study, effects cryogenically treated physical vapor deposition-coated on turning nickel-based Hastelloy C22 superalloy were investigated. Deep (−145°C) shallow (−80°C) Experiments...

Bu çalışmada, Renault Clio otomobilin fren balatası, bor oksit tozu katkısı ile sıcak presleme yöntemiyle üretilerek, tozunun balatanın tribolojik özellikleri üzerine etkisi deneysel olarak araştırılmıştır. Son yıllarda çevre dostu malzemelerin kullanılmasının önem kazanmasından dolayı balatasının içeriğinde kullanılmıştır. Ayrıca bu malzemenin seçilmesinde ülke ekonomisine fayda sağlamakta amaçlanmıştır. Karşılaştırma yapmak için ticari balatası Balata numunelerinin aşınma sürtünme...

After understanding that asbestos fibers are harmful to human health; researchers have investigated for alternative and eco-friendly materials. Agricultural products can be an example of these environmentally friendly materials because they easily supplied . Thus, in this study, asbestos-free automotive brake pads produced from %7 hazelnut dusts with other seventeen additives. Hazelnut shell is preferred it widespread our country. Cryogenic process applied at -80°C the pads. Before after...

Purpose With the development of technology, production industrial products with 3D (3-Dimensional) printing has become widespread. Variables in methods affect durability products. For this reason, studies to increase are gaining importance. This paper aims examine tribological behavior produced different patterns using methods. Design/methodology/approach Friction wear tests polylactic acid (PLA) samples were carried out on a pin-on disc testing device. performed according ASTM G-99...