Murat Koru

• Doctor of Engineering
• Isparta University of Applied Sciences

According to the current fire regulations in Turkey, the use of insulation materials such as EPS, which are commonly employed in building insulation, is limited to buildings up to 28.5 m in height. The regulations mandate the use of Class A fire-resistant thermal insulation materials in high-rise buildings. However, these materials may present chal...

Sonlu farklar metodu (FDM) ve sonlu elemanlar yöntemi (FEM) kullanılarak bilgisayar programı yardımıyla döküm prosesi benzer şartları oluşturulmaktadır. Döküm simülasyonu yöntemi ile döküm prosesinde karşılaşılacak muhtemel sonuçlar hesaplanarak simülasyon ortamında görsel olarak gösterilmektedir.Piyasada bu amaçlar için geliştirilmiş çeşitli progr...

Foam concrete; It is a type of lightweight concrete that can be produced by adding cement, water, surfactant, and if desired, sand or fine aggregate. It has high fluidity in fresh form and low density after hardening. It can provide a thermal conductivity of 90 mW/mK at a density of 400 kg/m3. In this study, the foam concrete samples were produced...

Patient-specific studies on vascular flows have significantly increased for hemodynamics due to the need for different observation techniques in clinical practice. In this study, we investigate aortic aneurysms in terms of deformation, stress, and rupture risk. The effect of Ascending Aortic Diameter (AAD) was investigated in different aortic arche...

In the high-pressure die casting method (HPDC), the determination of the cast-mold interface heat transfer coefficient (IHTC) is important for improving the part quality. This value varies depending on the casting temperature, mold temperature, injection pressure, injection velocity, mold design and various parameters. In this study, the IHTC and h...

The studies on vascular flows have increased in the last decade. In this work; we have focused on the effects of flow model and blood rheology on hemodynamics for a real-subject scan using Computed Tomography Angiography (CTA) during numerical solutions. Various vascular flow studies using Newtonian or non-Newtonian blood models were presented in t...

In the construction sector, the search for sustainable, environmentally friendly, and economical materials continues to find alternatives to conventional thermal insulation materials. Magnesium oxychloride cement (MOC) is widely used in panels, industrial floor coverings, and exterior wall coverings because of some of its properties some of its adv...

Bu çalışmada, ısı kaybını belirlemek amacıyla farklı duvar modelleri tasarlanmıştır. Bu amaçla klasik duvar, cam yünlü yalıtımlı duvar, taş yünlü yalıtımlı duvar, tromble duvar ve faz değiştiren malzemeli (FDMli) tromble duvar olmak üzere 5 farklı duvar termal davranışları irdelenmiştir. İlk olarak 2 cm iç sıva, 18,5 cm tuğla ve 2 cm dış sıvadan ol...

Thermal insulation is one of the most effective techniques to save energy in terms of heating and cooling in buildings. In terms of energy savings and providing thermal comfort conditions, the insulation material chosen, and the optimum insulation thickness determined are critical. Many studies have been conducted to establish the ideal insulating...

Fluid-Structure Interaction (FSI) modeling is highly effective to reveal deformations, fatigue failures, and stresses on a solid domain caused by the fluid flow. Mechanical properties of the solid structures and the thermophysical properties of fluids can change under different operating conditions. In this study, we investigated the interaction of...

In this study, the thermal conductivity (k-values) of pure and composite samples obtained from raw materials which these samples came from different parts (stalk, fiber) and different regions (bottom, middle and top) of nettle plants and collected from low and high altitudes (350 and 2100) in the Black Sea regions were investigated depending on ori...

The pressure casting method changes depending on the mold temperature, the casting temperature, the injection pressure, the injection speed, the mold surface roughness, the mold design, the alloy type, the application of a vacuum to the mold cavity, and many similar parameters. This study investigated filling analyses on the Al6061 alloy with and w...

This study investigated the production potential of foam glass having an apparent density of < 200 kgm−3 from waste glass powders ground to a grain size < 150 µm. In the study, glass powders obtained from waste window glass and waste soda bottles were used as fillers, and sodium silicate, silicon carbide, manganese oxide, calcium carbonate, activat...

Kalsiyum alüminat çimentosu yol uygulamaları, endüstriyel zemin uygulamaları, yüksek sıcaklık direnci gerektiren refrakter uygulamaları vb. gibi durumlarda üstün performans göstermektedir. Bu çalışmada, hidrojen peroksit, hidrojen peroksit +2mm genleştirilmiş perlit ve yalnızca köpük kullanımıyla olmak üzere, 3 farklı yöntemle kalsiyum alüminat çim...

In automotive industry, noise from the road, engine and environment are undesirable sounds which impacts the driver and passengers. In automobiles, the connection between the gear shifter mechanism and the transmission is carried out through cables and these cables go through a passage between the engine and the passenger compartment and rubber-bas...

Vascular hemodynamics play an important role in cardiovascular diseases. This work aimed to investigate the effects of an increase in ascending aortic diameter (AAD) on hemodynamics throughout a cardiac cycle for real patients. In this study, two scans of thoracic aortic aneurysm (TAA) subject with different AADs (42.94 mm and 48.01 mm) and a scan...

The aim of the research is to investigate the usability of composites produced using the organic waste from hazelnut and corn processing in the Black Sea Region in constructional applications with regard to mechanical and thermal conduction. Polymer composite test samples were produced to which hazelnut shells, corn stalk, nettle stalk (excl. fibre...

This study investigated the production of monolithic thermal insulation material (monoper) using coarse and fine raw perlite. In this research, coarse and fine raw perlite powder was used as a filling material, and sodium hydroxide and a foaming agent were used as chemical additives. The fillers and additives were mixed in different proportions and...

Pressure casting process, which is based on the principle of filling and solidifying the liquid metal into the mold cavity with the effect of speed and pressure, enables to obtain a serial product. The pressure casting process usually involves a thermal process. Starting with the casting process, the thermal resistances, especially formed at the ca...

Ülkemizde bina yalıtımında EPS ve XPS ısı yalıtım levhaları halen yaygın olarak kullanılmaktadır. Ancak, bu malzemelerin düşük yangın dirençleri nedeniyle son yıllarda yüksek katlı binalarda kullanımı sınırlandırılmıştır. Bu tür yapılarda camyünü-taşyünü levhalar ve ısı yalıtım sıvaları gibi A sınıfı yangın dayanımına sahip malzemelerin kullanımı m...

The reduction of radiation heat transfer in VIPs is an important issue. In VIPs, the radiation heat transfer is reduced by the use of opacifier. However, the amount of opacifier also significantly affects the cost of VIP. In this study, the effect of different types and sizes of opacifiers on VIP thermal conductivity was investigated. For this purp...

The thermal conductivities of many building materials are defined in the TS 825 standard. In this standard, the thermal conductivity of wall units such as brick and lightweight block was determined depending on the mass per unit volume and their configurations. Additionally, these values are used in the heat loss calculations of the buildings. The...

The physical properties of the materials used are also important in the thermal conduction, besides many other factors. In this study, nettle fiber/polyester composites were formed using stinging nettle grown in the Black Sea region. The stinging nettle fibers used in the formation of these composites were divided into three parts as bottom, middle...

Enerji ve enerjinin verimli bir şekilde kullanımı günümüzün en önemli konuları arasında yer almaktadır. Özellikle evsel ve endüstriyel soğutma uygulamalarında enerjinin daha verimli kullanımı için 1 Temmuz 2012 tarihinde enerji verimliliği strateji belgesi uyarınca A+ sınıfının altındaki buzdolaplarının satışı ve ithalatı yasaklanmıştır. Bu durum b...

Along with the emergence of thermoplastic polyurethane materials with its elastomeric behavior, there has been an improvement in the production of composites with functional properties by adding additives as well as advantages such as high production rates and diversity. In this study, thermal and mechanical behaviors of thermoplastic polyurethane...

High-Pressure Die Casting (HPDC) is a near-net shape manufacturing method for the non-ferrous materials casting process, and it is widely used in the automotive industry. In the HPDC method, mold (TM) and casting temperature (TC), first- (V1) and second (V2)-phase injection velocity, injection pressure (P3), mold and casting material, mold design a...

Foam concrete is a type of light weight concrete having self-compacting properties. It can be obtained by mixing the foam, formed by the foaming agent, with a mixture consisting of cement, water and aggregate. It contains independent closed pores with a volume of 75–80% within its body. In this study, three series of foam concrete were produced usi...

Köpük beton, taze halde yüksek akıcılığa ve sertleştikten sonra normal betona kıyasla düşük yoğunluğa ve yüksek ısıl dirence sahip ısıl işlemsiz olarak üretilebilen bir hafif beton türüdür. Köpük betonun yapı ve yalıtım elemanı olarak kullanılabilme potansiyeli birlikte değerlendirildiğinde bina ısıl performansı, konforu ve doğru projelendirilmesi...

In this study, using type CEM I 42.5 R Portland cement, limestone powder, polypropylene fibers and superplasticizer, additive foam concrete specimens were produced. 28 days compressive strengths, dry densities, ultrasonic pulse velocities and thermal conductivity coefficient of these samples were determined. Analysing test results, it was noticed t...

High-pressure die casting (HPDC) is widely used to manufacture nonferrous castings for the automotive industry. HPDC products’ properties, such as strength, porosity shape and size, heat conductivity, and microstructure, vary with changes in process parameters, such as vacuum, casting temperature, pressure, velocity, cooling, and die quality. This...

The main purpose of temperature insulation is to increase the thermal transport resistance of structural materials. The products used for thermal insulation are usually classified as either open cell or closed cell. Expanded polystyrene (EPS), extruded polystyrene (XPS), expanded nitrile rubber (ENR), polyurethane (PUR), polyethylene (PE) and ethyl...

There are many studies about the thermal conductivity coefficient of lightweight concrete using lightweight aggregates such as perlite, pumice, vermiculite, diatomite earth and expanded clay aggregates. However, researches related to the thermal conductivity of lightweight aggregates is limited. The lightweight aggregates are the main raw materials...

In this study, a gearbox produced by high-pressure die casting method is analyzed depending on different thermal and dynamic parameters by Vulcan and Flow3D simulation soft wares. In the simulations, die temperature is taken as 423 and 573 K, and casting temperature is taken as 953 and 1053K. In addition, Injection’s second phase velocity is determ...

z Köpük beton; çimento, su, sürfaktan ve istenirse kum ya da ince agrega ilave edilerek, ısıl işlemsiz olarak üretilebilen bir hafif beton türüdür. Taze halde yüksek akıcılığa ve sertleştikten sonra düşük yoğunluğa sahiptir. 400 kg/m 3 yoğunlukta 90 mW/mK ısıl iletkenlik katsayısını sağlayabilmektedir. Bu çalışmada CEM I 42.5 R tipi Portland çiment...

Polymer concretes (PC) finds many application fields in civil engineering, especially the requirements on chemical resistance and high mechanical strength, repairing-retrofitting and precast industry. The thermal conductivity “λ” properties of PC were investigated according to different mix components conductivity apparatus, in this study. PC was p...

zet: Basınçlı döküm prosesinde, kalıpta, döküm-kalıp ara yüzeyinde ve döküm malzemesinde oluşan termal dirençler üretilen parçanın mekanik, fiziksel özelliklerini belirleyen ve katılaşma oranını kontrol eden önemli faktörlerdir. Özellikle döküm ve kalıptaki ısı transferinin belirlenmesi döküm parçasının kalitesi açısından önemlidir. Bu amaçla, A413...

Thermal resistances in the mould, die-mold interface and mould material are most important parameters for produced material's mechanical, physical and solidification properties in die casting. Particularly, determining of heat transfer in die and mould is important for quality of die material. For this aim, die-mould interfacial heat transfer coeff...

Bu çalışmada, soğutma kulelerinde kullanılan dolgu elemanlarının basınç kaybı değerleri deneysel olarak incelenmiştir. Üç farklı soğutma kulesi dolgu elemanı deneysel çalışmalarda kullanılmıştır. Değişik hava debisi değerlerinde bu elemanların basınç kaybı değerleri ölçülmüştür. Sonuçlar grafik halinde sunulmuştur. Dolgu elemanlarının oluşturduğu b...

This work is focused on effect of various cooling strategies on surface roughness and tool wear during computer aided milling of soft workpiece materials. These milling operations were selected as dry milling, cool air cooling milling and fluid cooling milling. A cool air cooling system was designed and produced to cool end milling tools. Cool air...

Ceramic based coatings are used to increase the die and cutting tool life, and to produce quality parts which have surface and dimension sensitive. In this experimental study, the wear performance and thermal properties of the ceramic based coatings were investigated, using the forming tool and cutting tool. M41 high speed steel was coated with TiN...

In this study, cutting force of circular diamond saw in marble cutting industry was modeled using fuzzy logic method. Different cutting forces are effective during cutting processes and saw is damaged by these forces. Monitoring and controlling of the forces is important for cutting machine and circular diamond saw life and its influence the work-p...

ZET Binalarda ve fabrikalarda kurulacak olan HVAC sistemlerinin amacı, insanların bulundukları ortamları konfor şartlarına getirmek ve aynı şekilde fabrika ortamlarını da üretim yapılan alanla ilgili olarak gerekli olan ortam şartlarını sağlamaktır. Bu çalışmada, özellikle gelişen teknoloji ile insanların daha iyi konfor şartlarını arzulamaları ile...