Fraunhofer-Institut für Werkzeugmaschinen und Umformtechnik IWU
The history of medicine is characterized by aids that imitate the human body. Implants, for example, are based on the need for movement, stability and the best possible integration and size.
A close look at the internal bone structure reveals a geometric similarity to open-cellular metals and the idea of partial substitution in case of need is obvious. The ingrowth of bone cells into the cellular structure can ensure support and fixation in the body and the permeability can ensure the supply of nutrients through the structure.
Initial implementations of porous or cellular surfaces on implants are state of the art while exploiting the potential of the properties and adapting them to the specification of the human body are the subject of current research.
The poster shows that open-cellular aluminum foams have been investigated as a test material for dynamic fatigue testing and found to be useful. If the properties change in the absence of nutrient supply in human specimens, for example, in predicting the durability of screws, the metallic copy does not change in this respect.
Intelligent design of the cells and structures with the possibility of functional integration and adaptation to specific properties allow a wide range of applications that approximates the human model.
Abstract
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Poster
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