TY - JOUR T1 - Ultrasound for the non-invasive measurement of internal combustion engine piston ring oil films JO - Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology UR - http://eprints.whiterose.ac.uk/86931/ PY - 2015/02/01 AU - Mills R AU - Vail JR AU - Dwyer-Joyce R ED - DO - DOI: 10.1177/1350650114552538 PB - SAGE Publications VL - 229 IS - 2 SP - 207 EP - 215 Y2 - 2024/12/27 ER -