%0 Journal Article %T Fault Diagnosis of Electric Impact Drills Based on Time-Varying Loudness and Logistic Regression %A Jing, Yapeng %A Su, Haitao %A Wang, Shao %A Gui, Wenhua %A Guo, Qing %J Shock and Vibration %V 2021 %@ 1070-9622 %D 2021-03-24 %I Hindawi %~ DeepDyve