Biomedical Engineering Reference
In-Depth Information
Fig. 4.23 a Scenario of the indenter compression test in a climatic chamber: foam core with
leather cover material of an airplane seat and b force-displacement data of the compound
material compared to the plain foam core material (force-displacement scales have been removed
due to confidentiality)
Fig. 4.24 a FE-simulation model of the indenter compression test and b force-displacement data
with simulated fit based on the equilibrium elasticity material parameters of foam, fire-blocker
and leather cover of an airplane seat
''face side'' refers to the main seat cushion for buttock and back support and
''beaded rim'' is the side part of the seat.
All tested foam materials exhibit the typical force characteristics (three distinct
regions) apparent in plate compression testing (cf. outlines in regard to Fig.
4.4
).
Note that the curve characteristics are qualitatively similar, but do differ distinc-
tively in their force values, indicating different material stiffness.
4.2.2.2 Airplane Seat Materials
Material identification of different airplane seat materials follows.
Seat System with Foam Core and Leather Covering: this seat system con-
sists of a foam core with fire blocker coating and a leather cover. Figure
4.22
illustrates the experimental plate compression and hemispherical punch com-
pression results together with the simulation fit based on material parameters of
