Modern Materials and Manufacturing 2019 : 12th International DAAAM Baltic Conference and 27th International Baltic Conference BALTMATTRIB 2019. Selected, peer reviewedpapers from the conference Modern Materials and Manufacturing 2019 (MMM 2019), April 24-26, 2019, Tallinn, Estonia2019https://www.ester.ee/record=b5235278*esthttps://doi.org/10.4028/www.scientific.net/KEM.799