All these data files are experimental data on a nonlinear acoustic metamaterial Beam and a Plate. The experiment apparatus and measuring methods are described in the Article. The position of the measuring points are also defined in the Article. There are two folders. 1. All files in 'beam' are relevant to the experiments for the nonlinear acoustic metamaterial beam. 2. All files in 'plate' are relevant to the experiments for the nonlinear acoustic metamaterial plate. 3. In each folder, there is a readme.txt file. Please read that before using the data.