Low-cycle fatigue of steel structures. An experimental investigation with full scale ship structural components 1 2

Abstract

Low-cycle fatigue-tests with full scale structural specimens have been carried out in the Ship Structures Laboratory at Delft on a 600-ton tension-compression machine.

The specimens represented the interconnection of longitudinal frames at transverse bulkheads. Most were of the interrupted type and were constructed in mild steel. A small number of specimens made of a higher-strength steel was also available.

Axial cyclic loading was applied ( ${\mathit{P}}_{\min }\mathrm{/}{\mathit{P}}_{\max }=-\phantom{\mathrm{(}}1\mathrm{/}\phantom{\mathrm{(}}2$ ). The results are given for 0, 100 and 500 mm² crack-area as a function of nominal, local and peak-stresses.