University of Turku
We have a regular computer class with 16 machines, whereof 4 will be replaced by more powerful modelling computers, which are suitable for standard modelling activities for undergraduate and research level.
An interesting work in progress comprises development of an automated thin section machine for the purposes of compiling detailed 3D-models from closely spaced images. The piloting project will focus at concrete samples but any material with visual contrasts will do. The idea is to grind off slices off the sample at regular intervals, image each step and generate 3D-models of the evenly distributed slices (Fig. 1). The principle has proven to be successful, as shown by distinguishing the fluorescent epoxy, representing fractures and voids, from the intact concrete sample. The targets of development comprise automated image recognition tools, mounting a camera in the thin section machine, automating the imaging and the grinder operation etc. For this purpose, we are about to recruit a person for half a year, and are in discussions with commercial companies.
Used 3D/4D modelling software:
We are in collaboration with Michael Hillier from the Geological Survay of Canada. The collaboration aims at development of SURFE plug-in for gocad to be suited for structural geological data e.g. not associated with ductile folding.
Otherwise the principal 3D tool is MOVE, the others are used occasionally. There are plans to use and develop GroundHog with BGS if we get a positive funding decision for a project focusing at 3D-modelling of Glasifluvial Aquifers and the underlying bedrock topography.
- Synthesis of brittle structures at the Kevitsa Open pit in Northern Finland
- 3D modelling of rock and concrete samples
- 3D modelling of Glasifluvial Aquifers
Fig. 1: A manually constructed 3D model of a concrete drill core sample. The green surfaces stand for rock clasts and the red for a fracture surface.
Dr. Pietari Skyttä
University of Turku