PSI - Issue 61
G.J.C. Pinheiro et al. / Procedia Structural Integrity 61 (2024) 71–78 Pinheiro et al. / Structural Integrity Procedia 00 (2019) 000 – 000
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43.4%. For the 2015, by using a triangular propagation law the different curves are closer to each other and to the experimental values, which is further emphasized for the 7752. This difference in behavior between adhesives is justified by the brittleness of the AV138 leading to shorter damage zones during crack propagation, opposed to lengthier damage zones for the ductile adhesives. As a result, in brittle adhesives such as the AV138, the crack propagation rate with the applied displacement is significantly increased by reduction, leading to P m reduction.
30
25
25
20
20
15
15
P m [kN]
P m [kN]
10
10
5
5
0
0
0
10
20
30
40
50
0
10
20
30
40
50
[ ]
[ ]
a)
b)
L 0.5
L 1
L 2
Exp
L 0.5
L 1
L 2
Exp
10 12 14 16
0 2 4 6 8
P m [kN]
0
10
20
30
40
50
[ ]
c)
L 0.5
L 1
L 2
Exp
Fig. 5. P m comparison between different damage propagation exponents (linear law) and experimental data: (a) AV138; (b) 2015; (c) 7752.
30
30
25
25
20
20
15
15
P m [kN]
P m [kN]
10
10
5
5
0
0
0
10
20
30
40
50
0
10
20
30
40
50
[ ]
[ ]
a)
b)
E 0.5
E 1
E 2
Exp
E 0.5
E 1
E 2
Exp
30
25
20
15
P m [kN]
10
5
0
0
10
20
30
40
50
[ ]
c)
E 0.5
E 1
E 2
Exp
Fig. 6. P m comparison between different damage propagation exponents (exponential law) and experimental data: (a) AV138; (b) 2015; (c) 7752.
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