PSI - Issue 50

Andrey Yu. Fedorov et al. / Procedia Structural Integrity 50 (2023) 83–90 A.Yu. Fedorov et al. / Structural Integrity Procedia 00 (2023) 000–000

86

4

a

b

c

12.5

200

5

18

18

18

20

20

15

Fig. 1. Design scheme for ebonite specimens, dimensions in mm: a) a sample with a V-notch, unfilled with material; b) sample with a V-notch filled with material; c) sample without notch.

3.2. Determination of adhesive strength

The test method is based on breaking the adhesive bonding of the two 100 mm long glued ebonite bars with a rectangular 18 x 20 mm section (Fig. 2a). The thickness of the applied layer is minimal. The following materials were taken as the adhesive material: rubber adhesive, silicone sealant, epoxy resin and P1000 material.

c

a

b

Fig. 2. a) Adhesive strength tests of ebonite and epoxy resin; b) Epoxy resin tensile test specimens; c) Specimen of the P1000 material for tensile testing.