Results 131 to 140 of about 2,570 (205)

Percussive Augmenter of Rotary Drills for Operating as a Rotary-Hammer Drill [PDF]

A percussive augmenter bit includes a connection shaft for mounting the bit onto a rotary drill. In a first modality, an actuator percussively drives the bit, and an electric slip-ring provides power to the actuator while being rotated by the drill ...
Aldrich, Jack Barron, Badescu, Mircea, Bao, Xiaoqi, Bar-Cohen, Yoseph, Scott, James Samson, Sherrit, Stewart   +5 more
core   +1 more source

Experimental Study on Millisecond Laser Percussion Drilling of Heat-Resistant Steel. [PDF]

Materials (Basel)
Wang L, Wu C, Rong Y, Xu L, Xia K.
europepmc   +1 more source

An intelligent approach to predict the drilling penetration rate using acoustic emission technique (AET). [PDF]

Sci Rep
Khoshouei M, Bagherpour R, Jalalian MH, Purhamadani E.   +3 more
europepmc   +1 more source

Development of the RANCOR Rotary-Percussive Coring System for Mars Sample Return [PDF]

A RANCOR drill was designed to fit a Mars Exploration Rover (MER) class vehicle. The low mass of 3 kg was achieved by using the same actuator for three functions: rotation, percussions, and core break-off.
Indyk, Stephen, Paulsen, Gale, Zacny, Kris   +2 more
core   +1 more source

Design, Analysis, and Prototyping of a Multifunctional Digital Twin-Enabled Aerospace Drilling End-Effector Deployable by a Collaborative Robot. [PDF]

Sensors (Basel)
Kazemiesfahani M, Dilfanian E, Monsarrat B, Hajzargarbashi S.   +3 more
europepmc   +1 more source

EnViTSA: Ensemble of Vision Transformer with SpecAugment for Acoustic Event Classification. [PDF]

Sensors (Basel), 2023
Lim KM, Lee CP, Lee ZY, Alqahtani A.
europepmc   +1 more source

Analysis on Fluid-Solid-Thermal Coupling Field in Rock Breaking Under Composite Impact Loads Based on Simulation Model

Shiyou jixie
In order to reveal the rock-breaking mechanism of full-size PDC bit under composite impact loads,from the perspective of temperature,a simulation model of fluid-solid-thermal coupling in rock breaking of PDC bit under composite impact loads was built ...
Cao Jifei, Zou Deyong, Li Cheng, Wang Hanxiang, Che Jiaqi, Zhang Weiqiang, Huang Zhe   +6 more
doaj  

Effect of Carbon Fiber and Potassium Titanate Whisker on the Mechanical and Impact Tribological Properties of Fe-Based Impregnated Diamond Bit Matrix. [PDF]

Materials (Basel)
Wang Z, Guan C, Sun W, Tan S, Duan L, Fang X.   +5 more
europepmc   +1 more source

Advancing "Autonomous" sensing and prediction of the subsurface environment: a review and exploration of the challenges for soil and groundwater contamination. [PDF]

Environ Sci Pollut Res Int, 2023
Davis GB, Rayner JL, Donn MJ.
europepmc   +1 more source

Deviation to mucking analysis. [PDF]

Discov Miner
Heske C, Apel DB, Adil M, Kahraman B, Liu WV, Pu Y.   +5 more
europepmc   +1 more source