A study to support Marine Engineers' sensory memory and to raise their sensing skills in maintenance inspection

本研究旨在支持及改善轮机工程师的技术。我们希望能帮助他们更早地发现发动机操作故障。我们的实验是通过改变柴油发动机的设置来进行的，包括燃油阀的爆炸压力和气门间隙。实验中声音和振动的多变量分析结果证实了设置项的信息。然后验证维修支持系统是否能够支持工程师的感觉记忆。我们在实验中使用了两套设置项目：标准设置和非标准设置。我们让考生在每个环境中都能感受到声音和振动。随后，他们回答了一份问卷，询问他们是否能够通过声音和振动区分不同的环境。结果显示，他们的判断正确率约为90%。我们发现维修支持系统能够支持工程师的感觉记忆。

This study was conducted to support and improve techniques of marine engineers. We expect to help them detect engine operation malfunctions earlier. Our experiment was conducted by changing settings of diesel engines including the blast pressure of fuel valves and valve clearance. Results of multivariate analyses using sound and vibration in experiment confirmed the information of setting items. Then we verified whether or not the maintenance support system was able to support engineers' sensory memory. We used two sets of setting items in the experiment: a standard setting and a non-standard setting. We made our examinees experience sound and vibration in each setting. Subsequently, they answered a questionnaire asking if they were able to distinguish one setting from another by sound and vibration. Results showed that they were able to judge correctly with around 90% probability. We found that the maintenance support system was able to support the engineers' sensory memory.