@inproceedings{inproceedings35022750, title = {Friction evaluation method for metal forming by a compression-twist type testing machine}, author = {Valdéz Salazar, Carlos Eddy and Stipkovic Filho, Marco and Batalha, Gilmar Ferreira}, year = {2004}, publisher = {Abcm}, booktitle = {Congresso Nacional de Engenharia Mecânica} }