
294 Biomaterials for Bone Regeneration
1960
1920
1880
1840
1800
0
0.2
0.4
0.6
0.8
1
0
200
400
600
800
1000
ω
s
0.016
0.012
0.008
0.004
0
0
0.2
0.4
0.6
0.8
1
0
200
400
600
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1000
ω
s
(a) (b)
9.9 3D plots of storage modulus (a) and loss factor (b) for a Havriliak-
Negami material with the following constants: α = 1, β = 0.5,
E
o
= 1800 MPa, E
∞
= 2000 MPa, relaxation times τ
o 1
= 1.696 × 10
–8
s,
τ
o 2
=1.696 × 10
–13
s, Q/R = 7264 K, undergoing a temperature change from
293 K to 323 K at time t
s
= 1 s and brought back to 293 K at time t
f
= 100 s.
For a Havriliak-Negami model with two relaxation times, where each of
them is a function ...