Co-Investigators:
Annotation:
The present project deals with testing and investigation of multimaterial samples created by 3D printing. Such structures have a wide range of applications as a wide range of elements can be worked with and combined within the design to create the desired properties. The created component can be used as a frequency filter, a component with variable mechanical, thermal and electrical properties or the created structure, can seduce mechanical waves to a specific location where a piezoelectric member can be placed and used for Energy Harvesting. In these applications, the multimaterial is subjected to different types and rates of mechanical deformation. The material can be stressed non-destructively by wave propagation at different frequencies, or destructively at different strain rates and under cyclic loading. The behaviour of these structures is not well described for the above mentioned mechanical stresses. The proposed project will address the development of a methodology for non-destructive and destructive testing at high strain rates on a Hopkinson split pressure bar (SHPB) and at medium and low strain rates on an experimental setup using linear induction motors (LIMA). The objective of the experimental testing will be to determine the strain and wave characteristics of the multimaterial structures in question. Thanks to the possibility of using advanced experimental equipment (fast X-ray imaging, precision cyclic loading, electron microscopy), it will also be possible to investigate the influence of the quality of the interface between the sub-materials. The quality of the interface has a key influence on the behaviour of the overall multi-material structure, both in terms of deformation behaviour and stress wave propagation.
Department:
Year:
2025 - 2026
Program:
Studentská grantová soutěž ČVUT - SGS25/103/OHK2/2T/16
