Composite Materials Research Progress

Tensile Test: Load at rupture (kN)
Tensile Residual Strength (kN)
40
35
30
25
20
15
10
5
Damage Evaluation and Residual Strength Prediction of CFRP Laminates … 203
0
0 1 2 3 4 5 6
Tensile Test: Displacement at rupture (mm)
[0,90,+-45]
[90,0,+-45]
Figure 31. Ultimate load and ultimate displacement from the residual strength tensile tests.
45.0
40.0
35.0
30.0
25.0
20.0
15.0
10.0
5.0
[0,90,+-45]
[90,0,+-45]
0.0
0.0 20.0 40.0 60.0 80.0 100.0 120.0 140.0 160.0
Int(f ) (mm)
Figure 32. Tensile residual strength versus the integrate of the function f and the representation of the
respective correlation model for the two damaged laminate configurations [0°,90°.+45°,-45°]s and
[90°,0°.+45°,-45°] s