4.1 Sandwich core
43
a)
b)
c)
Figure 34 a) Experimental setup of transverse shear tests; b) stress strain relationship of tested
specimen in L-direction; c) stress strain relationship of tested specimen in W-direction
Summary
The obtained test results are generally in the range of the given mechanical properties
from manufacturers for the same Nomex honeycomb configuration, while all determined mechanical properties tend to be inferior if compared to typical manufacturers
data. This is summarized in Table 9, where the test results are averaged over all specimens for each test and opposed to the data from two manufacturers. In case of tension,
the manufacturers give no reference. It can be noted that the determined tensile properties exceed the compressive ones in terms of both, strength and modulus, by about
12%. This trend was has also been observed by Liu et al. [Liu15].
43
a)
b)
c)
Figure 34 a) Experimental setup of transverse shear tests; b) stress strain relationship of tested
specimen in L-direction; c) stress strain relationship of tested specimen in W-direction
Summary
The obtained test results are generally in the range of the given mechanical properties
from manufacturers for the same Nomex honeycomb configuration, while all determined mechanical properties tend to be inferior if compared to typical manufacturers
data. This is summarized in Table 9, where the test results are averaged over all specimens for each test and opposed to the data from two manufacturers. In case of tension,
the manufacturers give no reference. It can be noted that the determined tensile properties exceed the compressive ones in terms of both, strength and modulus, by about
12%. This trend was has also been observed by Liu et al. [Liu15].