عنوان
پدید آورنده
موضوع
رده
کتابخانه
محل استقرار
شماره کتابشناسی ملی
شماره
TLpq2522835958
زبان اثر
زبان متن نوشتاري يا گفتاري و مانند آن
انگلیسی
عنوان و نام پديدآور
عنوان اصلي
Katmanlı imalata uygun metal tozlarının yayılım ve karakterizasyonu
نام عام مواد
[Thesis]
نام نخستين پديدآور
Hasdemir, Beyza
نام ساير پديدآوران
Ahmetoğlu, Çekdar Vakıf
وضعیت نشر و پخش و غیره
نام ناشر، پخش کننده و غيره
Izmir Institute of Technology (Turkey)
تاریخ نشرو بخش و غیره
2020
مشخصات ظاهری
نام خاص و کميت اثر
68
یادداشتهای مربوط به پایان نامه ها
جزئيات پايان نامه و نوع درجه آن
Master's
کسي که مدرک را اعطا کرده
Izmir Institute of Technology (Turkey)
امتياز متن
2020
یادداشتهای مربوط به خلاصه یا چکیده
متن يادداشت
Powder Bed Fusion (PBF) is one of the Additive Manufacturing (AM) techniques, in which metal powders are used as feedstock. AM process enables the production of lightweight structures, design freedom in 3D printed parts, short cycle time, etc. AM made part properties are affected by the powder characteristics used to form the component. A part comprises hundreds of spread layers; however, a homogeneous layer is crucial for obtaining the necessary final part properties. Spreadability can be defined as a method to quantify the powder distribution through the layer. Although it has not been standardized yet, currently, it is merely controlled by following the powder flowability, a standardized characterization method for AM. This thesis investigates the spreadability of the utilized powders for AM (here only Laser-Powder Bed Fusion will be used), with the image processing algorithms in MATLAB. Besides, it also aims to examine the spreadability correlation with the other characteristics such as flow rate, apparent density, angle of repose, and thus the final 3D printed components. Samples in six different particle size distribution were characterized, and spreadability tests were performed with the L-PBF machine. The powder characterization results demonstrated that an increase in fine particle ratio by volume (below 20 µm) enhances the angle of repose (AOR). The tests demonstrated that irregularities on the spread layer could be quantified with the image processing algorithms. The 3D printed samples were found porous. The reason for porosity in the sample might base on a combination of various factors, poor spreadability, spatter formation, and other L-PBF processing parameters might be the reasons for such microstructural development.
موضوع (اسم عام یاعبارت اسمی عام)
موضوع مستند نشده
Additive manufacturing
موضوع مستند نشده
Computer aided design--CAD
موضوع مستند نشده
Engineering
موضوع مستند نشده
Metals
موضوع مستند نشده
Powder metallurgy
موضوع مستند نشده
Rapid prototyping
نام شخص به منزله سر شناسه - (مسئولیت معنوی درجه اول )
مستند نام اشخاص تاييد نشده
Ahmetoğlu, Çekdar Vakıf
مستند نام اشخاص تاييد نشده
Hasdemir, Beyza
دسترسی و محل الکترونیکی
نام الکترونيکي
مطالعه متن کتاب وضعیت انتشار
فرمت انتشار
p
اطلاعات رکورد کتابشناسی
نوع ماده
[Thesis]
کد کاربرگه
276903
اطلاعات دسترسی رکورد
سطح دسترسي
a
تكميل شده
Y
