@article{oai:uec.repo.nii.ac.jp:00009037,
 author = {多田, 和希 and TADA, Kazuki and 結城, 宏信 and YUKI, Hironobu and 薬師寺, 正人 and YAKUSHIJI, Masato and 中島, 大 and NAKAJIMA, Hiroshi},
 issue = {5},
 journal = {非破壊検査, Journal of The Japanese Society for Non-Destructive Inspection},
 month = {May},
 note = {The Effects of the clamping force of the bolts of engine gaskets on acoustic emission (AE) signals caused by gas leaks from a cylinder were investigated in order to evaluate the gasket mounting condition. Leaks were caused by increasing the pressure of nitrogen gas injected into the cylinder. A proportional relationship was shown between the clamping force and the threshold pressure, the critical pressure for increasing the average signal level (ASL) of AE due to a leak, so that the clamping force could be evaluated based on AE monitoring. The threshold pressure was revealed to depend on the clamping force by application of a pre-clamping force on the gasket, while that indicates nearly a constant value for the gasket was shown without pre-clamping. It was also found that the increase ratio of ASL becomes larger by applying the pre-clamping force, and the coefficient of the relationship between the clamping force and the threshold pressure increases when using the gasket to apply the pre-clamping force. Therefore, the sealability of gaskets can be evaluated quantitatively by determining the coefficient of the proportional relationship.},
 pages = {215--218},
 title = {エンジンガスケット取り付け状態のAE法による評価},
 volume = {65},
 year = {2016},
 yomi = {タダ, カズキ and ユウキ, ヒロノブ and ヤクシジ, マサト and ナカジマ, ヒロシ}
}