Entwicklung einer Image-to-Analysis Pipeline zur Abbildung von Bruchprozessen. - Einzelansicht

Additively manufactured (AM) concrete parts with selective cement activation are prone to defects, heterogeneity and brittle fracture. To enable reliable application and structural design of such parts, it is essential to understand their failure behavior. To this end, AM specimen where manufactured, excavated, dried and tested for their limit load.

The goal of the special project is to design and image-to-analysis pipeline to numerically model these experimental tests using the finite cell method (FCM) in combination with the phase-field approach to fracture.

Each student is provided with:

1. A C++ finite element framework
2. One CT scan of an AM concrete specimen
3. Experimental data form three-point bending tests

[single]

The objective is to identify suitable numerical parameters of the phase-field model to reproduce the experimentally obtained limit loads. To achieve this, each student will:

-      Conduct a literature review on the phase-field approach to fracture and the FCM to determine relevant numerical / material parameters.

-      Process and modify CT scan data for numerical analysis.

-      Develop an analysis pipeline to enable the analysis of CT scans using the FCM in C++.

-      Perform a parameter study to match the simulation results to the experimental results and obtaining the phase-field parameters.

[team]

The students will then compare their results and jointly further develop this analysis pipeline to be provided as a Python library, allowing future researchers to perform similar analyses independently.

The results will be presented in a final presentation. The developed code must be submitted with a technical report.

The goals mentioned above will be adjusted to the capabilities and background of the students (Bachelor/Master)

[1] L. K. Hug, Simulation of Crack Propagation in Complex Geometries Using Phase-Field Modeling and the Finite Cell Method, PhD Thesis, Technical University of Munich, Munich, Germany, 2024. [2] D. Lowke, D. Talke, I. Dressler, D. Weger, C. Gehlen, C. Ostertag, and R. Rael, “Particle bed 3D printing by selective cement activation – applications, material and process technology,” Cement and Concrete Research, vol. 134, p. 106077, 2020. [3] P. Kopp, E. Rank, V. M. Calo, and S. Kollmannsberger, “Efficient multi-level hp-finite elements in arbitrary dimensions,” Computer Methods in Applied Mechanics and Engineering, vol. 401, p. 115575, 2022.

Time and place will be announced at the project fair.

Knowledge or strong interest in programming (C++ and Python)

Final presentation, code, and technical report.

B.Sc. Medieninformatik / Informatik

M.Sc. Computer Science and Media / Computer Science for Digital Media

M.Sc. Digital Engineering