Cihat Ensarioglu

Bursa Uludağ Üni̇versi̇tesi̇ · Department of Mechanical Engineering

Crash boxes in vehicles are one of the passive safety measures that aim to reduce injury to passengers and damage to the vehicle during a collision. Their function is to absorb the mechanical energy resulting from a collision by deforming plastically. Considering human safety, not only the energy must be damped, but also the forces acting on the pa...

In this study, the performance of the front collision zone of the vehicle, reinforced with an S-shaped front collision rail, was compared to that of the classic straight front collision rail. In order to create a safe living cage in automobiles, half vehicle model was used and the collision performances of two different front collision zone models...

In this study, the performance of the front collision zone of the vehicle, reinforced with an S-shaped front collision rail, was compared to that of the classic straight front collision rail. In order to create a safe living cage in automobiles, half vehicle model was used and the collision performances of two different front collision zone models...

The most attractive aspect of metal foams is that they can combine the properties of metallic materials (e.g., strength, high melting temperature) with the properties of porous materials (e.g., light-weightiness, sound/heat energy absorption). This makes them favorable in aerospace applications where multifunctional lightweight materials are requir...

Kaza anında araçların hızları ve kütleleri sebebiyle yüksek miktarda enerji açığa çıkmakta ve bu enerjinin uygun şekilde sönümlenmesi gerekmektedir. Düzgün sönümlenemeyen enerji iç parçalara, sürücüye ve yolculara zarar verecek kuvvetlerin oluşmasına sebep olarak hayati sorunlara yol açar. Araçlarda bu sönümlemeyi yapabilmek için devletlerin, kurum...

The closed-cell metal foams are utilized in various industrial applications due to their impact and energy absorption capacity, noise cancelation, and lightweight properties. Additionally, the manufacturing methods of stochastic foams with blowing agents or inert gas injection are well known. However, the poor mechanical strength and high brittlene...

Negatif Poisson oranına sahip olan öksetik yapılar, mekanik enerji/darbe sönümleme açısından iyi özelliklere sahiptir. Bu yapılar; havacılık-uzay ve savunma sektörlerindeki sandviç yapılı kompozitlerde, zırh üretiminde veya koruyucu spor ekipmanı üretiminde uygulama alanı bulmuştur. Bu çalışmada, öksetik bal peteği yapısının darbe yüklemesi altında...

Bu çalışmada, rijit duvar testi sanal ortamda simule edilerek yüksek mukavemetli düşük alaşımlı çelik ön çarpışma kolu et kalınlığının aracın çarpışma performansına etkisi incelenmiş ve en uygun et kalınlığı tespit edilmiştir. Ön çarpışma kollarında HSLA (High-Strength Low-Alloy) çelik grubundaki FEE340 malzemesi kullanılmış ve altı farklı et kalın...

zet Çarpışma-kutuları otomobillerde, kaza anında çarpışma enerjisini sönümleyerek aracın ve yolcuların en az zararı almasını sağlayan önemli elemanlardır. Bu çalışmada, öncelikle, alüminyum köpük malzemesinin yarı-statik basma testleri gerçekleştirilerek malzeme modeli oluşturulmuştur. Bu malzeme modeli; farklı oranlarda alüminyum köpük takviyesi y...

In order to absorb the kinetic energy of the crash and provide a sufficiently low deceleration, crash-boxes are employed in vehicles. Occupants and the vehicle body itself are protected in this way. For this purpose, thin-walled steel or aluminum crash-boxes are widely used in automotive industry. Besides, aluminum foam-filling of thin-walled struc...

Crash-boxes are used in vehicles for absorbing the kinetic energy of the crash and providing a sufficiently low deceleration with the help of the crush forces. Occupants and the vehicle body itself (the components behind the crash-box and the bumper) are protected in this way. Thin-walled steel or aluminum crash-boxes are widely used in automotive...

In vehicle design, crash-boxes are employed on bumpers for a number of reasons. Among them are absorbing the kinetic energy of the crash, ensuring sufficiently low forces, and providing a sufficiently low deceleration. By achieving these; they protect the passengers, the other body in the crash, and the vehicle body itself (the high cost components...

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 operation, which can substitute grinding in most cases, has some disadvantages. One of them is the significant increase of surface...

TOFAŞ ve FIAT'da ilk  Daha hafif  Darbenin yönünden etkilenmeksizin yüksek darbe ve titreşim sönümleme  Yerli tedarikçi ile yurt-dışına bağımlılığın önüne geçilmesi  Daha ucuz ve rekabetçi  Patentlenebilir Arka sigorta çarpma testi performans beklentisini karşılayabilen, yüksek enerji emilimi özelliği olan, ve % 30 oranında ağırlık düşüşü sağl...

This article contains our perceptions and comments on the literature concerning morphological computation. We argue that, if there is no computation without intelligence and if morphology is the embodiment of this intelligence, the usage of the term ”morphological computation” is trivial. Therefore, another term should be used to define this new di...

In this paper, ductile irons with different microstructures were machined in a group of experiments using standard testing procedure and the effect of microstructure on the machinability was investigated. Bars (diameter 90mm×320mm) of ferritic/pearlitic, tempered martensitic, and lower ausferritic microstructures were produced by various heat treat...

The work presented in this paper examines the effects of cutting parameters (cutting speed, feed rate and depth of cut) onto the surface roughness through the mathematical model developed by using the data gathered from a series of turning experiments performed. An additional investigation was carried out in order to evaluate the influence of two w...

Bu çalışmada, alüminyum köpük malzemelerin ikincil işlemleri sonlu elemanlar yöntemiyle (FEM) modellenmiştir. Kapalı hücre ve sandviç yapılı numuneler CO2 lazer kesme teknolojisi, tel erozyonla kesim (EDM) yöntemi ve mekanik dairesel döner testere ile kesilmiş; sandviç yapılı alüminyum köpük malzeme numuneleri farklı bir metot (metal dolgulu epoksi...