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. 2022 Jul 6;15(14):4729. doi: 10.3390/ma15144729
Symbols Description
A Initial cross-sectional area of the compression scaffold, m2
Ao Initial cross-sectional area of the tensile sample within the gauge length, m2
Aef Effective contact area, nm2
B Fitting parameter
C Loading curvature
E* Reduced Young’s modulus, GPa
E Specimen Young’s modulus from nanoindentation, GPa
Ei Young’s modulus of the diamond indenter, GPa
F Applied force, N
H Hardness, GPa
h Indentation depth, nm
hc Indenter contact depth, nm
hm Max indentation depth, nm
hf Residual depth after unloading, nm
K Constant = 24.56
L Initial length of the compression scaffold, m
Lo Gauge length of tensile sample, m
Lc Initial length between the tensile sample grips, m
ΔL Displacement of top surface of the scaffold, m
m Fitting parameter
P Indentation load, mN
Pmax Maximum indentation load, mN
PS Pore size, μm
R Relative density of scaffolds, %
S Slope of the unloading curve
ST Strut thickness, μm
v Poisson ratio of the specimen
vi Poisson ratio of the diamond indenter
α Alpha phase of titanium alloy (Ti6Al4V)
β Beta phase of titanium alloy (Ti6Al4V)
σ Stress, MPa
σy Yield stress, MPa
γ Indenter geometry constant
λ Correction factor = 1.05
Diameter of samples
G Schoen gyroid unit cell
D Schwartz diamond unit cell
°C Celsius degree