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

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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