Prof Dr. Changgen Bu , China University of Geosciences (Beijing), China.
Dr. Changgen Bu , a prominent mechanical engineer and professor at China University of Geosciences (Beijing), has made significant strides in mechanical dynamics and diamond tool brazing. Since joining the university in 1987, he has focused on mechatronic systems, shock and vibration dynamics, and innovative diamond tool technologies. Known for his contributions to advancing the field of DTH hammer mechanics, he has led projects funded by the NSFC and CGS, developing theories that enhance drill-string durability in challenging conditions. His patented work on diamond bit technology has revolutionized China’s manufacturing sector. 
Publication profile
Education and Experience
- Ph.D. in Mechanical Engineering – China University of Geosciences
- M.S. in Mechanical Engineering – China University of Geosciences
- Professor and Doctoral Supervisor – China University of Geosciences (Beijing), since 1987
- Recipient of First Prize, Anhui Science and Technology Award (2015) – Recognized for advancements in mechatronic design and diamond brazing tools
Suitability For The Award
Professor Changgen Bu is highly suitable for the Excellence in Engineering Award due to his exceptional contributions to mechanical engineering, particularly in the areas of mechatronic systems, mechanical dynamics, and diamond tool brazing technology. He has dedicated his career to advancing engineering solutions with significant impact on industrial practices in China and beyond.
Professional Development
Professor Bu has cultivated his expertise through extensive research, especially in mechatronic systems and mechanical dynamics. With funding from esteemed organizations like NSFC and CGS, he has developed theories for enhancing the DTH hammer’s functionality in hard-rock drilling, pioneering concepts like the resonant theory of DTH hammers with short drill strings. His patented innovations, including new diamond drill bit technologies, address metallurgical bonding between diamond and matrix, extending drill bit lifespan. Recently, he is venturing into domain decomposition methods to model nonlinear dynamics in drill strings, pushing forward advancements in deep-well drilling systems. 
Research Focus
Professor Bu’s research centers on cutting-edge mechatronic design, particularly focusing on drill-string dynamics and brazing technology. His work addresses critical challenges in mechanical dynamics involving shock and vibration, creating solutions for down-the-hole (DTH) hammers used in hard-rock drilling. With an emphasis on sonic and ultrasonic drill string systems, he has established innovative theories, such as the standing wave vibration framework, which reveals sonic/ultrasonic drilling mechanisms and fatigue damage prevention. His exploration of brazed diamond bit technology enables breakthroughs in tool durability and performance, significantly impacting China’s diamond tool industry. 
Awards and Honors
- Anhui Science and Technology Award, First Prize (2015) – Recognized for significant contributions in mechanical engineering and brazing technology advancements
- Principal Investigator, NSFC Project – Led research on DTH hammer dynamic design and drill string resilience
Publications
“Theoretical study on fatigue damage of sonic standing wave resonant drill-string” – cited by 1 (2023).- “Influence of sonic vibrator mass on the modal frequency of the drill string” – cited by 4 (2020).
- “Symmetrized splitting operator method for dynamic consolidation problem of saturated porous semi-infinite foundation” – cited by 2 (2019).
- “In-lab micro drill test of brazed diamond bit” – cited by 0 (2018).
- “The transient impact of the resonant flexible drill string of a sonic drill on rock” – cited by 16 (2017).
- “Tensile test and section analysis on matrix of brazing diamond bit” – cited by 0 (2017).
- “Cost-effective improvements of a rotating platform by integration of a high-accuracy inclinometer and encoders for attitude evaluation” – cited by 5 (2017).
- “Arithmetic solution for the axial vibration of drill string coupling with a down-the-hole hammer in rock drilling” – cited by 11 (2016).
- “Research on flexible drill string vibration induced by sonic harmonic excitation” – cited by 4 (2015).