Optimal Design Parameters of a Percussive Drilling System for Efficiency Improvement

<div>State of reaching drill bit dimensionless penetration <i>U</i><sub><i>m</i></sub> with respect to mass ratio, <i>m</i><sub><i>r</i></sub>, and <i>β</i>.</div>

Advances in Materials Science and Engineering

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Figure 6

Figure 6: Optimal Design Parameters of a Percussive Drilling System for Efficiency Improvement 