TY JOUR TI RELIABILITY INCREASE IN HIGH-DYNAMIC AXIAL-PISTON HYDROMACHINES KW reliability KW axial-piston hydromachine KW friction couples KW wear KW capacity loss KW sliding KW materials JO Bulletin of Bryansk state technical university AU Voronov, S.. AU Gavrilova, V.. PY 2016 IS 2016 PB Bryansk State Technical University