Doğrudan Metal Lazer Sinterleme/Ergitme Yöntemi ile İmal Edilecek Parçanın Mekanik Özelliklerinin Tahmini

Yıl 2017, Cilt: 7 Sayı: 1, 12 - 28, 22.01.2017

Burhan Duman M. Cengiz Kayacan

Öz

Eklemeli
İmalat (Eİ) Teknolojilerinden biri olan Doğrudan Metal Lazer Sinterleme/Ergitme
(DMLS/E), katmanlar halinde metal tozlarını sererek ve lazer ışını ile
birleştirerek parça imalatını gerçekleştiren bir yöntemdir. Bu yöntemde, imal
edilecek parçanın mekanik özelliklerini etkileyen lazer gücü, tarama hızı,
tarama mesafesi, katman kalınlığı gibi birçok giriş (işlem) parametresi
bulunmaktadır. Belirtilen parametreler donanımın müsaade ettiği ölçüde kontrol
edilmekte ve değerleri ayarlanabilmektedir. Giriş parametreleri doğrudan imal
edilecek parçanın mekanik özelliklerini etkilemektedir. Farklı ihtiyaçlar
doğrultusunda imal edilecek parçada istenen mekanik özellikler, giriş parametre
değerlerinin değiştirilmesi ile ayarlanabilmektedir. En uygun değerde giriş
parametrelerinin seçilmesi ile de çok iyi mekanik özellikler elde
edilebilmektedir. Çalışmada, girilen işlem parametre değerlerine göre imal
edilecek parçanın mekanik özelliklerini tahmin etmek amacıyla bir Bulanık
Mantık modeli oluşturulmuştur. Böylece, mekanik özellikleri tespit etmek için
araştırmacıların makina üzerinde çok sayıda gerçek denemeler yapması gerekmeden
işlem parametrelerinin değerleri belirlenebilecek, zaman ve maliyet açısından
kazanç sağlanmış olacaktır.

Anahtar Kelimeler

Eklemeli İmalat, Seçmeli Lazer Sinterleme (SLS), Seçmeli Lazer Ergitme (SLE), Bulanık Mantık (BM)

Predicting The Mechanical Properties Of The Part Produced By Direct Metal Laser Sintering/Melting Method

Öz

The
Direct Metal Laser Sintering/Melting (DMLS/M) which is one of the Additive
Manufacturing (AM) technologies, is a method through which direct parts are
manufactured by spreading a layer of metal powder and combining them through
the laser beam. There are lots of input (process) parameters that affect the
mechanical properties of the part to be manufactured by this method such as
laser power, scan speed, hatching distance and layer thickness. These
parameters are controlled and adjusted as long as the hardware allows. The input
parameters affect the mechanical properties of the part to be manufactured
directly. The desired mechanical properties of the part to be manufactured in
line with different requirements can be adjusted by changing the values of
input parameters. In the study, a Fuzzy Logic model has been created allowing
to predict the mechanical properties of the part to be manufactured according
to the process parameter values. Thus, it will be possible to determine the operation
parameter values without requiring many real trials on the machine by the
researchers which means saving in time and money.

Anahtar Kelimeler

Additive Manufacturing, Selective Laser Sintering, Selective Laser Melting, Fuzzy Logic

Kaynakça

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