Page 313 - Handbook of Properties of Textile and Technical Fibres

Tensile properties of flax fibers 287

1600

1400
Strength at break (MPa) 1000
1200

800

600

400
30 40 50 60 70 80
Young’s modulus (GPa)
Figure 8.5 Average tensile strength at break in function of average tangent modulus for 50 flax
fiber batches (Coroller et al., 2013; Martin et al., 2013; Roussi ere et al., 2012; Alix et al., 2012;
Baley, 2002; Bourmaud et al., 2010, 2013a; Charlet et al., 2007, 2009; Lefeuvre et al., 2013,
2014a; Pillin et al., 2011; Baley and Bourmaud, 2014).

Finally, without any accurate data and for a first design step, a design office would
be able to use minimum tensile properties of flax fibers to estimate ply properties for
composites. Indeed, 84% of batches have stiffnesses, strengths, and strains at break
higher or equal to 43.9 GPa, 745 MPa, and 1.2%, respectively. With these minimal

4

3
Strain at break (%) 2

1

0
30 40 50 60 70 80
Young’s modulus (GPa)
Figure 8.6 Average elongation at break in function of average tangent modulus of 50 flax fiber
batches (Coroller et al., 2013; Martin et al., 2013; Roussi ere et al., 2012; Alix et al., 2012;
Baley, 2002; Bourmaud et al., 2010, 2013a; Charlet et al., 2007, 2009; Lefeuvre et al., 2013,
2014a; Pillin et al., 2011; Baley and Bourmaud, 2014).