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Another important component of rock drill tools is the drilling machine itself. These machines are usually powered by compressed air or hydraulics, providing the necessary force to drive the drill bit into the rock. The drilling machine allows for precise control of the drilling process, ensuring accuracy and efficiency in tunnel excavation The drilling machine allows for precise control of the drilling process, ensuring accuracy and efficiency in tunnel excavation
Inspired by the flexibility and rigidity of natural spider silks webs, a research team led by Prof. YU Shuhong from the University of Science and Technology of China (USTC) developed a simple and general method to fabricate superelastic and fatigue resistant hard carbon aerogels with nanofibrous network structure by using resorcinol-formaldehyde resin as a hard carbon source.