A Study on G-modulus Measurement Using Strain Gauge Method for Accurate Shaft Power Measurement

摘要

The trial run of ships has become a more important issue which willevaluate the speed performance of the ship, due to the fact that IMOenforces the application of EEDI to new vessels. G-modulus is one of themost important factors for speed performance measurements of ships.Therefore, ISO suggested to adopt standard values (82.4 GPa), ifshipbuilders cannot prove other values through actual shaft torsionaltests. However, this standard value is not accurate to measure the Gmodulusof the actual shaft. Hence, we obtained the G-modulusmeasured by specimen test and compared it with the ISO standard value.