Research of long-term properties of high-strength fiberglasses by means of the built-in FBG sensorsPeter V. Mikheev, Andrey A. Dalinkevich, Sergey A. Gusev, Timofey N. Igonin, Ludmila B. Maksaeva and Tatyana A. NenashevaMATEC Web Conf., 77 (2016) 05003DOI: https://doi.org/10.1051/matecconf/20167705003