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Geometrical and mechanical properties of polyamide PA 12 bonds in composite advanced pore morphology (APM) foam structures

Kovačič A., Novak N., Vesenjak M., Dubrovski P. D., Ren Z.

Archives of Civil and Mechanical Engineering

2018

Vol. 18, no. 4

1198--1206

Adhesive bonds have very strong influence on mechanical properties of composite particulate metal foams. This study experimentally investigates for the first time the geometrical and mechanical properties of PA 12 adhesive bonds between spherical advanced pore morphology (APM) elements made of AlSi10 foam. A new experimentation setup for mechanical testing of bonds in APM structures is based on APM element puncturing. The results show that mechanical behaviour of adhesive bonds differs much from the basic mechanical behaviour of adhesive. Two different bond failure modes are identified, depending on the bond geometry. The geometrical and mechanical results are statistically interpreted for simpler representation, applicability, and modelling of bonds in APM composites in the future.