THE EFFECT OF POROSITY ON ELASTIC-CONSTANTS OF REPRESENTATIVE AIRCRAFT LAMINATES

The methodology for evaluation of the elastic properties of continuous fiber composite laminates with various levels of porosity is proposed by the authors.1 The proposed model utilizes the latest non-destructi ve testing (NDT) techniques to estimate the degree of porosity in a pa rt. NDT data are used as input to the analytical model which is based on constitutive theory for elastic composites with distributed damage. The practical applications of the model and investigation of the effe ct of porosity on the elastic properties of representative aircraft co mposite laminates are presented in this paper.