Advanced manufacturing technologies and technologies for polymeric and composite products : 9th International Conference of Advanced Manufacturing Technologies (ICAMaT 2018) and 2nd International Conference on Technologies for Polymeric and Composite Products (POLCOM 2018) : selected, peer reviewed papers from the 9th International Conference of Advanced Manufacturing Technologies (ICAMaT 2018) and 2nd International Conference on Technologies for Polymeric and Composite Products (POLCOM 2018), November 1-2, Bucharest, Romania /