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Table 4 Overview on repetitive impact campaign on grinded steel substrates (H-shaped specimen in Charpy machine)

From: Adhesive bonding of measurement equipment on impact-driven offshore monopile foundations

Experiment no

Impact hammer type

Number of blows

Failure in specific type of adhesive layer

1

P1 (2 kg hammer)

54

No failure

2

P2 (6.6 kg hammer)

23

Auxiliary bonding

3

P2

2

Auxiliary bonding

3a (repaired aux. bond)

P2 (2nd run)

18

Thick film adhesive layer

4

P2

1

Auxiliary bonding

4a (repaired aux. bond)

P2 (2nd run)

11

Thick film adhesive layer

5

P2

38

Thick film adhesive layer

6

P2

4

Auxiliary bonding

7

P2

32

Thick film adhesive layer

8

P2

19

Thick film adhesive layer

9

P2

7

Both types of adhesive layer

10

P2

2

Both types of adhesive layer

11

P2

9

Both types of adhesive layer

12

P2

10

Both types of adhesive layer