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RESEARCH PRODUCT

RESIDUAL STRESS ANALYSIS OF ORTHOTROPIC MATERIALS BY THE THROUGH-HOLE DRILLING METHOD

Bernardo ZuccarelloPierluigi Pagliaro

subject

Hole drilling methodMaterials sciencebusiness.industryMechanical EngineeringAerospace EngineeringDrillingStructural engineeringOrthotropic materiallaw.inventionStress fieldMechanics of MaterialslawResidual stressSolid mechanicsCartesian coordinate systemResidual stress Hole-drilling method Orthotropic materials Composite materialsbusinessStrain gauge

description

The present study deals with the development and the application of the through-hole drilling method for the residual stress analysis in orthotropic materials. Through a systematic theoretical study of the stress field present on orthotropic plates with a circular hole, the relationships between the relaxed strains measured by a rectangular strain gauge rosette and the Cartesian components of the unknown residual stresses are obtained. The theoretical formulas of each influence coefficient allow the user an easy application of the method to the analysis of uniform-residual stresses on a generic homogeneous orthotropic material. Furthermore, to extend the method to the analysis of the residual stresses on orthotropic laminates, caused by initial in-plane loadings, an alternative formulation is implemented. The accuracy of the proposed method has been assessed through 3D numerical simulations and experimental tests carried out on unidirectional, cross-ply and angle-ply laminates. © Society for Experimental Mechanics 2007.

yearjournalcountryeditionlanguage
2007-02-03
10.1007/s11340-006-9019-3http://hdl.handle.net/10447/17240