Determination of moment of inertia of small mass, mixed geometry bodies

Bu araştırmada hassas cihazlarda ve makine elemanlarında kütlesel atalet momentinin önemi belirtilerek kütlesel atalet momenti ölçümü yöntemleri sunulmuştur. Sarkaç yöntemiyle, döner masa yöntemiyle, enerjinin korunumu yöntemiyle atalet momenti ölçümleri örnekleri verilmiştir. Bu örneklerde incelenen parçaların kütleleri büyük olduğundan (m 200 g) küçük kütleli cisimlerin atalet momentlerini (m 10-20g) ölçmek için iplik metodu seçildi. İplik metodunun teorisi ve hata analizleri verildi. Sonrada standart ve karışık geometrili farklı malzemelerden yapılmış (fiber, teflon, alüminyum ve demir) numunelerin atalet momentleri ölçüldü. Küçük kütleli m 20 g olan teflon, fiber gibi numunelerde hata az iken m 50-115 g olan alüminyum ve demirde hatalar arttı. Ölçüm parametrelerden tel çapı ve boyunun etkileri incelendi.In this study the importance of mass moment of inertia in the fine equipments and machine elements was pointed out and the methods of measurement the mass moment inertia were presented. The sample of measurement the maas moment of inertia by using the pendulum method, the turned table method and the conservation of energy method were given. In this examples, since the mass of samples were greater than 200 g., the 'thread method' was selected in order to measure the mass moment of samples whose masses were between 10-20 g. The theory and error analyses were given. Later on,the mass moments of standart and complicated shaped samples which are made of different type of materials (fiber, teflon, aliminium and iron) were measured. It was observed that while the error in light materials such as teflon and fiber (m 20 g) is smoll, it increased for the heavier materials such as aluminium and iron(m 50-115 g). The measurement parameters were also investigated. However the effects of diameter and length on the result were subject to different research projects