New blade tip-timing system for measuring rotor blade vibration of steam and gas turbinesPiotr Kowaleczko, Romuald Rządkowski, Leszek Kubitz, Paweł Troka, Paweł Kowaleczko and Ryszard SzczepanikE3S Web Conf., 137 (2019) 01040DOI: https://doi.org/10.1051/e3sconf/201913701040