modulus of toughness

modulus of toughness

The amount of energy per unit volume which is absorbed by a structural material when subject to shock or impact, up to the point of fracture.
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Type of sample Tensile strength, Tensile modulus, [E.sub.y] [[sigma].sub.ymax] (MPa) (MPa) Neat LDPE 26 [+ or -] 1 274 [+ or -] 10 LDPE-MWCNT 32 [+ or -] 4 430 [+ or -] 50 LDPE-MWCNT-UHMWPE 25 [+ or -] 2 381 [+ or -] 21 Type of sample Ultimate fracture strain, Modulus of toughness, [[epsilon].sub.ymax] (%) [u.sub.t] (MJ/[m.sup.3]) Neat LDPE 99 [+ or -] 8 22 [+ or -] 2 LDPE-MWCNT 54 [+ or -] 9 14 [+ or -] 4 LDPE-MWCNT-UHMWPE 143 [+ or -] 6 34 [+ or -] 4 Type of sample Normalizing velocity [[cube root of ([OMEGA])] (m/s) Neat LDPE 197 LDPE-MWCNT 184 LDPE-MWCNT-UHMWPE 230 [FIGURE 3 OMITTED]
The modulus of toughness ([u.sup.t]) was calculated from the area under the stress-strain curve as shown in Fig.
The modulus of toughness also called the specific volume energy absorption to fracture, which is an indication of the toughness of a material, was calculated based on the area integration of the stress-strain curve from the tensile tests.
The modulus of toughness (also called the specific volume energy absorption to fracture), which is an indication of the toughness of a material, was calculated based on the area integration of the stress-strain curve from the tensile test.
Figure 18 demonstrates that the addition of CSR particles improved the modulus of toughness of the specimen, particularly at the 0.5 wt% CSR level.