Intelligent Manufacturing and Design Under Challenging Conditions

This Reprint focuses on intelligent manufacturing and equipment design for extreme environments-deep earth, deep sea, and deep space. As surface resources dwindle, engineering operations increasingly move into high-temperature, high-pressure, and poorly maintainable conditions. The contributions in this Reprint address three core areas. First, intelligent drilling, coring, and robotic systems for harsh settings, such as deep coal mine support robots and lunar coring devices. Second, deep in situ environment reconstruction and high-temperature/high-pressure simulation testbeds for fidelity core transfer and ground-based validation. Third, reliability enhancement of critical components through multi-physics optimization, including thermo-electrical coupling, CFD-guided erosion mitigation, and downhole power and signal transmission. Together, these studies offer a pathway from experience-driven to data-driven high-reliability operations. This Reprint serves as a resource for researchers and engineers in deep underground engineering, deep-sea exploration, planetary drilling, and intelligent manufacturing under challenging conditions.