Results 231 to 240 of about 16,082 (297)

Research on an intelligent drilling parameter optimization method using sliding window segmentation based on the hydraulic-mechanical specific energy model. [PDF]

PLoS One
Li W, Liu Y, Li X, Deng B, Zhao H, Zhu L, Zain U.   +6 more
europepmc   +1 more source

Flow Characteristics and Response Surface Methodology‐Based Pressure‐Loss Prediction Models for the Reverse Circulation Converter in Double‐Wall Drill Pipes

Energy Science &Engineering, EarlyView.
Flow characteristics and pressure loss mechanisms of a reverse circulation converter in dual‐wall drill pipes are systematically investigated using CFD and response surface methodology. The results reveal the dominant role of inertial dissipation and provide a predictive framework for optimizing converter design and operational parameters. ABSTRACT The
Mingming Geng, Hui Zhang, Junpeng Li, Baokang Wu, Geng Zhang, Xinrui Wang, Jintao An, Long Chen, Yiming Ma   +8 more
wiley   +1 more source

A Novel, Low-Cost, Non-laboratory Training Model for Neurosurgical Microdrilling Skills: A Proof-of-Concept Study. [PDF]

Cureus
Nerntengian N, Birbilis T, Tokas G, Ivanchenko A, Hajduk A, Sakowitz OW.   +5 more
europepmc   +1 more source

Numerical simulation study of gas-solid two-phase flow characteristics in borehole sampling of coal cuttings. [PDF]

PLoS One
Xue S, Zhang L, Zheng X, Gao C, Liu S.
europepmc   +1 more source

TOPSIS-Based Performance and Drilling Delamination Assessment of Chemically Treated PALF Composites for Lightweight UAVs. [PDF]

ACS Omega
Saha M, Singh H, Kumar Singh M, Arora G, Mavinkere Rangappa S, Siengchin S.   +5 more
europepmc   +1 more source

Research on the drilling pipe health monitoring and intelligent life prediction management platform. [PDF]

Sci Rep
Gao X, Wu X, Li Q, Wang L, Zhu Z, Qu F.
europepmc   +1 more source

Heat reduction during bone drilling using a two-stage drilling strategy. [PDF]

Sci Rep
Chen YC, Hsiao HY, Tu YK, Yen CY, Hong YY, Tsai YJ, Kao YH, Hsiao CK.   +7 more
europepmc   +1 more source

Research on Delamination Damage Factor of Hole-Making Process Optimization Based on Carbon Fiber Composite Materials. [PDF]

Polymers (Basel)
Liu L, Lai Y, Zhang Y, Huang L, Yang J, Jiang Y, Hu Z, Li Z, Wang B.   +8 more
europepmc   +1 more source