Relative permittivity armour bedding

Symbol
$\epsilon_{ab}$
Formulas
$\frac{\epsilon_{ab,1} t_{ab,1}+\epsilon_{ab,2} t_{ab,2}}{t_{ab}}$
Choices
MaterialValue
PE2.26omnicable.com
PVC2.7omnicable.com
EPR2.24omnicable.com
POC2.26= PE
IIR2.6= SiR
NR2.6= SiR
PP2.21omnicable.com
SiR2.6omnicable.com
CR2.6= NR
CSM2.15omnicable.com (Teflon)
CJ1.87Mustata 2013
RSP2.7= SiR
BIT2.8various sources
fPOC2.3= POC
fPP2.21= PP
fPE2.3= PE
fPVC2.7= PVC
tape1.5assumption
Ot2.3PE, IEC 60287-1-1