University Rey Juan Carlos 1 article published in JoVE Engineering Strain Sensing Based on Multiscale Composite Materials Reinforced with Graphene Nanoplatelets Rocío Moriche1, Silvia G. Prolongo1, María Sánchez1, Alberto Jiménez-Suárez1, Mónica Campo1, Alejandro Ureña1 1Materials Science and Engineering Area, University Rey Juan Carlos The integration of conductive nanoparticles, such as graphene nanoplatelets, into glass fiber composite materials creates an intrinsic electrical network susceptible to strain. Here, different methods to obtain strain sensors based on the addition of graphene nanoplatelets into the epoxy matrix or as a coating on glass fabrics are proposed.