Tagaluminium alloy EN AW-1050A

THE EFFECT OF THE SURFACE PREPARATION METHOD ON THE ULTIMATE STRENGTH OF A SINGLE LAP ADHESIVE JOINTS

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The aim of the article was to present issues related to the determination of the influence of the surface preparation
method on the strength of adhesive joints made of three types of construction materials: structural steel C45, aluminium alloy EN
AW-1050A and stainless steel 1.4401. The surfaces of the analysed materials were prepared by machining with three different
abrasive tools of different gradations: P120, P220, P400. Adhesive joints were prepared using the E53/Z-1/100:10 epoxy adhesive
composition. After the process of adhesive joint curing, destructive tests were carried out on the Zwick/Roell Z150 strength
machine, in accordance with PN-EN 1465 standard, which determined the shear strength of the analyzed joints. During the tests
it was observed that the most advantageous method of surface preparation is treatment using P220 grit abrasive.