27
Using this model, corrections of the stress field have been computed to take into account the effect of the end constraint.
The effect of the correction is maximal for the 15° off-axis test and it decreases while the off-axis angle increase becoming
negligible for the 75° and 90° tests. Globally an increase in the axial failure stress with the strain-rate has been observed for
all specimen orientations.
References
1. Sun, C.T., Chung, I.: An oblique end-tab design for testing off-axis composite specimens. Composites. 24(8), 619–623 (1993)
2. Pierron, F., Vautrin, A.: The 10 off-axis tensile test: a critical approach. Compos. Sci. Technol. 56(4), 483–488 (1996)
3. Maire, J.-F.: Etudes expérimentales et théoriques du comportement de matériaux composites en contraintes planes. Thèse de doctorat. Doctorate
Thesis of Franche-Comté University, Besançon (1992)
4. Missoum-Benziane, D., Chiaruttini, V., Garaud, J.-D., Feyel, F., Foerch, R., Osipov, N., Quilici, S., Rannou, J., Roos, A., Ryckelynck, D.: Z-set/
ZeBuLoN: une suite logicielle pour la mécanique des matériaux et le calcul de structures. 10e colloque national en calcul des structures (2011)
0
10
20
30
40
50
60
70
0
20
40
60
80
100
Transverse stress (MPa)
Shear stress (MPa)
10
−3
s
−1
0.1 s
−1
15 s
−1
Fig. 5.3 T700/M21 tensile
strength corrected using Finite
Elements simulations
presented in shear stress
versus transverse stress graph
(uncorrected values in
transparency)
5 Experimental Investigation of the Failure Rate Dependency of Composite Materials Using Off-Axis Tensile Tests
Using this model, corrections of the stress field have been computed to take into account the effect of the end constraint.
The effect of the correction is maximal for the 15° off-axis test and it decreases while the off-axis angle increase becoming
negligible for the 75° and 90° tests. Globally an increase in the axial failure stress with the strain-rate has been observed for
all specimen orientations.
References
1. Sun, C.T., Chung, I.: An oblique end-tab design for testing off-axis composite specimens. Composites. 24(8), 619–623 (1993)
2. Pierron, F., Vautrin, A.: The 10 off-axis tensile test: a critical approach. Compos. Sci. Technol. 56(4), 483–488 (1996)
3. Maire, J.-F.: Etudes expérimentales et théoriques du comportement de matériaux composites en contraintes planes. Thèse de doctorat. Doctorate
Thesis of Franche-Comté University, Besançon (1992)
4. Missoum-Benziane, D., Chiaruttini, V., Garaud, J.-D., Feyel, F., Foerch, R., Osipov, N., Quilici, S., Rannou, J., Roos, A., Ryckelynck, D.: Z-set/
ZeBuLoN: une suite logicielle pour la mécanique des matériaux et le calcul de structures. 10e colloque national en calcul des structures (2011)
0
10
20
30
40
50
60
70
0
20
40
60
80
100
Transverse stress (MPa)
Shear stress (MPa)
10
−3
s
−1
0.1 s
−1
15 s
−1
Fig. 5.3 T700/M21 tensile
strength corrected using Finite
Elements simulations
presented in shear stress
versus transverse stress graph
(uncorrected values in
transparency)
5 Experimental Investigation of the Failure Rate Dependency of Composite Materials Using Off-Axis Tensile Tests