%0 Journal Article %T A New Mechanical Specific Energy Model for Composite Impact Drilling %A Qin, Jianyu %A Yin, Siyuan %A Yang, Naitong %A Chen, Xuyue %A Tian, Bo %A Xue, Liang %A Ma, Yi %J Applied Sciences %V 12 %N 20 %@ 2076-3417 %D 2022-10-14 %I Multidisciplinary Digital Publishing Institute %~ DeepDyve