Abbreviation	Meaning
AM	Additive manufacturing
C-CFF	Carbon continuous fiber-reinforced filament
CF	Carbon fiber
E 1	Longitudinal elastic modulus
E 2	Transverse elastic modulus
E c1	Young’s modulus of the first fiber composite system
E c2	Young’s modulus of the second fiber composite system
Eexp	Experimentally determined Young’s modulus
Ehyb	Young’s modulus of the hybrid composite
FDM	Fused Deposition Modeling
FEA	Finite element analysis
FFF	Fused Filament Fabrication
$F_f^c$	Fiber compression (Hashin)
$F_f^t$	Fiber tension (Hashin)
$F_m^c$	Matrix compression (Hashin)
$F_m^t$	Matrix tension (Hashin)
G12, G23	Shear modulus
G-CFF	Glass continuous fiber-reinforced filament
GF	Glass fiber
MEX	Material extrusion
λE	Hybrid effect of the Young’s modulus
ρ	Density
σ 11	Normal stress in x-direction
σ 22	Normal stress in y-direction
SEM	Scanning electron microscope
SL	Longitudinal shear strength
ST	Transverse shear strength
τ 12	Shear stress
v 12	Poisson’s ratio
VAS	Volume average stiffness
V c1	Volume fraction of the first fiber composite system
V c2	Volume fraction of the second fiber composite system
V f	Fiber volume fraction
v f	Volume of the fibers in the specimen
V t	Volume of the specimen
XC	Longitudinal compressive strength
XT	Longitudinal tensile strength
YC	Transverse compressive strength
YT	Transverse tensile strength