Determination of Paris parameters from S−N curve in the simulation of fatigue in Nomex honeycomb sandwich structures

Abstract Determination of S-N and Paris parameters form the two primary approaches as far fatigue testing is concerned. With many economic factors complexities involved in experimentation, these are not related to each other require implementation separate test standards for both them. In this work, an attempt made on interconvertibility experimental a numerical technique based virtual crack closure ( VCCT ) proposed evaluation from S−N curve, corresponding four-point bending end notched flexural (4 ENF sandwich specimen up Nomex ® aramid honeycomb core with glass fibre reinforced composite GFRP facesheets. was effectively utilised estimation strain energy release rates SERR ), 2 D plane stress/strain 3 conditions, which were compared other, resultant incorporated S − N data determination curve. These determined employed simulation delamination growth by using ‘Direct Cyclic’ step results obtained literature. The comparison revealed good agreement between two, thereby validating technique.