Osman Güner, Gökhan ALTINTAŞ, Abdülkerim ERGÜT

Mikro-CT Çözünürlüğünün Voksel Tabanlı Model ve Analiz Sonuçları Üzerindeki Etkileri - Effect of Micro-CT Resolutions of Voxel Based Model and Analysis Results

Mikro-CT Çözünürlüğünün Voksel Tabanlı Model ve Analiz Sonuçları Üzerindeki Etkileri Çalışma konusu bilimin pek çok alanında kullanılan yöntemlerin bir arada kullanılmasını gerektiren güncel bir konudur. Tıp, malzeme ve uçak-uzay teknolojilerinin kullanıldığı pek çok alanda bu konu kapsamında kullanılan metotlar kullanılmaktadır. Öncelikle iki boyutlu tomografi taraması yapılan malzemelerin, elde edilen görüntüleri piksel piksel işlenerek üç boyutlu solid model haline getirilmesi işlemi yapılmıştır. Bu işlem aşamasının ilk kısmı ağırlıklı olarak treshold segmentasyonunun ve algoritmasının kullanılmasıyla yapılmıştır. Her iki algoritmanın seçimlik parametreleri ve sonlu eleman modellerinin geometrik morfolojisi ayrıntılı olarak incelenmiştir. Sonlu elemanlar modellerinin çözümleri ABAQUS® paket programı yardımıyla yapılmıştır. Farklı çözünürlük seçimi ile elde edilen modellerin analizleri sonucunda doğal frekansın, burkulma yükünün ve statik analiz değerlerinin değiştiği gösterilmiştir. Effect of Micro-CT Resolutions of Voxel Based Model and Analysis ResultsThe subject of paper is a contemporary subject that requires the use of a combination of the methods used in many fields of science. Medicine, material and air space technologies used in the methods used within the scope of this paper is used in many areas. Whit in the scope of this paper the images, obtained from materials subjected to two dimensional tomography scanning, were processed pixel by pixel into three-dimensional solid model. Phase of the first part of this process required the usage of predominantly Threshold segmentation and flood fill algorithm. The optional parameters and the geometric morphology of finite element models of both algorithms were examined in detail. ABAQUS ® software program was carried out using solutions of finite element models. The change of the natural frequencies, buckling loads and the values of static analysis of the models, obtained from selection of different resolution, are presented by the results.

Anahtar Kelimeler:

Tersine mühendislik, Vokselizasyon, Mikro-BT, Sonlu elemanlar metodu, Burkulma / Reverse Engineering, Voxelization, Micro-CT, Finite Elements Method, Buckling

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