Problems of mechanics in pump and compressor engineering : selected, peer reviewed papers from the XIV International Scientific and Engineering Conference on Hermetic Sealing, Vibration Reliability and Ecological Safety of Pump and Compressor Machinery (HERVICON+PUMPS 2014), September 9-12, 2014, Sumy, Ukraine - Martsynkovskyy, Volodymyr; Zahorulko, Andriy (Applied mechanics and materials, 2014)