(Bio)mechanical testing

School of Life Sciences

Testing novel implant systems, surgical methods and minimally invasive treatments

Capabilities

Static and dynamic (bio)mechanical tests, including tensile and compression testing at various temperatures and fatigue testing
Removal-torque measurements
Tests with complex, multi-axial load sequences
Detection of trajectories and deformations, using video extensometers, digital image correlation and 3D navigation systems

Equipment

Tensile testing system with temperature chamber and video laser extensometer
Dynamic testing system
Removal torque testing system

Publications

Comparison of SLM and conventionally produced implants using dynamic biomechanical loading. R. Schumacher, P. Lamprecht, S. Zimmermann, M. de Wild, A. Spiegel, RapidTech Erfurt, 2013.

Optical strain fields by Scanning Electron Microscope Digital Image Correlation (SEM-DIC) while tensile testing a) a diamond, b) a single and c) a double strut micro-structure before fracturing. Scale bars indicate 2 mm. M. Meier, F. Schuler, M. de Wild, In-situ fracture analysis of 3D-printed structures, eCM Online Periodical, 2019, Collection 4; SSB+RM Conference Abstracts (page P2) (2019).

Plastic deformation bands perpendicular to the tensile loading direction (red arrows in b) are observed in the DIC analysis of an SLM micro specimen mechanically stressed in the SEM even before surface cracks occur. Scale bars indicate 500 µm.

Biomechanical testing of meniscus. C. Rosso, S. Müller, D.M. Buckland, T. Schwenk, S. Zimmermann, M. de Wild, V. Valderrabano, All-inside Meniscal Repair Devices Compared to Their Matched Inside-Out Vertical Mattress Suture Repair: Introducing 10k and 100k Loading Cycles, Am J Sports Med. 42, 9; 2226-33 (2014).

Project details

Type: Research project
Research areas: Functional materials and surfaces
University: FHNW School of Life Sciences / Institute for Medical Engineering and Medical Informatics
Partner: Universitätsspital Zürich, ArthroMedics, Atesos, Medartis, Straumann, Mimedis

Contact

Prof. Dr. Michael de Wild

Team leader, Functional Materials and Surfaces

Phone: +41 61 228 56 49
E-Mail: michael.dewild@fhnw.ch