MECHANICAL ENGINEERING PHD THESIS DEFENSE BY ERDEM BEKTAS

Title: In-process Monitoring and Qualification of SLM Produced Nickel Based Superalloys Using Eddy Current Inspection Method and a Novel EC Array Probe Design

Speaker: Erdem Bektaş

Time: August 05, 2022, 18:00

Place: Online via Zoom

Thesis Committee Members:

Prof. Dr. Demircan Canadinç (Advisor, Koç University)

Prof. Dr. İsmail Lazoğlu (Koç University)

Assoc. Prof. Dr. Uğur Ünal (Koç University)

Assoc. Prof. Dr. Burak Bal (Abdullah Gül University)

Assist. Prof. Dr. Sıdıka Mine Toker (Eskişehir Osmangazi University)

Abstract:

Additive manufacturing gives high flexibility to part designers on the manufacturability of optimized and complex parts. This advantage brings a part inspectability challenge. In this study, the Eddy Current Array sensor application is investigated as an in-process monitoring/inspection method and discussed as a L-PBF layer acceptance technique for the volumetric qualification of aerospace parts. Laser Powder Bed Fusion (L-PBF) process produced Inconel 625 test samples are used for data collection. Intentionally defects are produced using a waterjet-guided laser system for L-PBF in-process eddy current inspection capability trials.