RT Journal Article SR Electronic A1 Doluk, Elżbieta A1 Rudawska, Anna A1 Stančeková, Dana A1 Mrázik, Jozef T1 Influence of surface treatment on the strength of adhesive joints JF Manufacturing Technology Journal YR 2021 VO 21 IS 5 SP 585 OP 591 DO 10.21062/mft.2021.068 UL https://journalmt.com/artkey/mft-202105-0003.php AB The article compared the strength results of single-lap adhesive joints made of galvanized steel sheet. The strength of adhesive joints was determined for two methods of surface treatment - using a degreaser (method B) and with-out a degreaser (method A). The samples were joined using a two-component epoxy adhesive based on Bisphenol A. The strength tests were carried out on a Zwick/Roell Z150 testing machine. The analysis of the surface roughness parameters of the samples for the method A was performed. The highest shear strength value (8.82 MPa) was ob-tained by method B and using P120 abrasive paper. The lowest shear strength value (4.08 MPa) was received using method A and P600 abrasive paper. The maximum values of measured surface roughness parameters were rec-orded for samples prepared with abrasive papers with granulations, respectively: P120, P220 and P180. The low-est values of Ra, Rz and Rt parameters gained using P600 abrasive paper.