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Correlation of Optical Tomography (OT) and Mul-tispectral Imaging (MSI) in Powder Bed Fusion of Metals (PBF-LB/M)

Institut
Professur für Laserbasierte Additive Fertigung (TUM-ED)
Typ
Bachelorarbeit / Semesterarbeit / Masterarbeit /
Inhalt
experimentell / theoretisch /  
Beschreibung

Initial Situation

At the Professorship of Laser-based Additive Manufacturing, we conduct research on innovative process strategies, methods, and systems in the field of metal additive manufacturing. Our focus lies on the process Laser-based Powder Bed Fusion of Metals (PBF-LB/M), in which thin layers of metal powder are selectively melted by a laser, building up parts layer by layer. Different laser beam shapes and their influence on key process characteristics are investigated. Inline monitoring – using Optical Tomography (OT) and a multispectral camera (MSI) – plays a significant role in process observation and control.

Objective and Scope of the Thesis

The objective of this thesis is to correlate the signatures of OT and MSI on an EOS M290 FLX for various geometries. The main goal is the transfer of monitoring signatures between different beam shapes; a secondary goal is the correlation with local part properties (e.g. density or surface quality). 

The thesis comprises the following work packages:

  1. Literature review on OT, MSI, and beam shaping in PBF-LB/M
  2. Integration and calibration of monitoring equipment
  3. Experimental planning, sample design, and execution of experiments on the EOS M290 FLX 
  4. Data preparation as well as optical and metallographic analysis of the samples
  5. Correlation of the signatures with each other and with local part properties, transfer between beam shapes
  6. Evaluation and documentation of the results

You will be part of a student team of 3-4 members working together on closely related research questions. Each member conducts an independent thesis with regular exchange within the team.

Candidate Profile

  • Initiative and creativity
  • Analytical thinking and structured work
  • Strong interest in additive manufacturing
  • Programming skills (e.g. Python) beneficial
  • Enthusiasm for teamwork

Application and Contact

Please send a short motivation letter and your current academic transcript to the contact below by September 13, 2026. 

Candidate selection will be completed by September 18, 2026, followed by an invitation to an interview. The final decision will be communicated by the end of September, with the thesis starting on October 1, 2026. The thesis can be written in English or german.

Richard Off, M.Sc.  |  richard.off<script>document.write('@');</script>

<noscript>(at)</noscript>tum.de
Voraussetzungen
  • Initiative and creativity
  • Analytical thinking and structured work
  • Strong interest in additive manufacturing
  • Programming skills (e.g. Python) beneficial
  • Enthusiasm for teamwork
Möglicher Beginn
1.10.2026
Kontakt
Richard Off
Raum: B1.2.06
Tel.: 0172/5218161
richard.offtum.de
Ausschreibung