Partial least square/projection to latent structures (PLS) regression to estimate impact localization in structures

Abstract

This paper presents results from the application of partial least squares/projection to latent structures (PLS) as a regression tool in order to estimate the localization of impacts in an aircraft structure using the strain wave produced by the impact and recorded by sensors attached to the structure. PLS is a technique that maximizes the covariance between the predictor matrix X and the predicted matrix Y for each component of the space. The main objectives of PLS are: to model X and Y, and to predict Y from X.