STRAIN PROPERTIES AND FATIGUE STRENGTH OF STEEL PLATE WITH CIRCULAR HOLE FILLED BY EXPANSION FIT OF ROUND-BAR

Abstract

A circular hole which removes weld defect or is mistakely drilled is usually repaired by welding. This portion may have various defects. Instead of the welding, we are interested in expansion fit of the round steel bar into the hole as a repair method. This method may realize stress transmission through the hole position due to bearing-pressure.
This study aim at making clear the strain properties and fatigue strength of steel plate with circular hole filled by expansion fit steel round-bar. For this purpose, we have performed strain measuring tests, fatigue tests and stress analyses by finite element method on model specimens.