Qualification

Besides the design instructions like ASME III Subsection NF and KTA 3205.3, the Sway Struts are subjected to a test procedure according to KTA 3205.3.

The following tests were performed:

A) Dimension control

• Eccentricity
• Measurement of the free motion

B) Dynamic tests at 10 Hz

• 1,5 x FN 25 load cycles
• 1,0 x FN 3.300 load cycles
• 0,5 x FN 47.000 load cycles
• 0,1 x FN 330.000 load cycles

C) Nondestructive examination

• Liquid penetrant test

D) Failure test at 150°

• tensile load at 5° deflection
• compression load at 0° deflection
  

E) Additional tests

In order to ensure for emergency condition the 1.5 fold nominal load and for faulted condition the 1,7 fold nominal load, the following tests were performed:

Test load = (failure load compression x 1,7 x 1,2) : 2,5

The Sway Struts met all requirements of KTA 3205.3.