This dataset contains health monitoring data collected during compression compression fatigue tests of single stiffener (Level 1) aerospace composite panels. The coupons were initially or after some time damaged either by a low velocity impact or by an artificial disbond, located between the stiffener and the skin (a pdf file highlights the locations). Nine coupons were tested until failure and the folders contain Acoustic Emission and optical fibres (distributed sensing) data. Data recorded prior to impact are denoted as BI while those after impact are denoted with AI. This dataset is the fourth and final series of the 4 testing campaigns.