Results 71 to 80 of about 193,780 (356)

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

Advanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal, Michael M. Becker, Sarah C. L. Fischer   +2 more
wiley   +1 more source

A Data-Driven Approach to Predict the ROP of Deep Wells in Fukang Sag

Applied Sciences, 2023
In the deep well drilling process in the Fukang Depression of the Eastern Junggar Basin, rock fracturing issues and low rate of penetration (ROP) have posed significant challenges to drilling efficiency.
Yingjie Wang, Qiang Tan, Desheng Wu, Hao Chen, Naikun Hu, Yuxuan Zhao   +5 more
doaj   +1 more source

Substantiating rational parameters of a method for shrinkage ore stoping while developing thin- vein steeply inclined deposits [PDF]

, 2018
Objective of the paper is to substantiate rational ore-stoping technique while using small wells in the context of thin-vein steeply inclined deposit mining.
Denyshchenko, Oleksandr, Koroviaka, Yevhenii, Rastsvietaiev, Valerii, Shyrin, Leonid   +3 more
core   +1 more source

Investigation of Thermo‐Chemical Processes in Commercial MgO‐C Refractory Bricks With and Without MgO‐C Recyclate at Elevated Temperatures

Advanced Engineering Materials, EarlyView.
This study investigates thermo‐chemical processes during high‐temperature testing of two commercial MgO‐C brick grades, one containing 47.5 wt.% MgO‐C recyclate. Using ETV, DTA/TG‐MS, XRD, and SEM/EDS/EBSD, mechanisms such as carbothermal reduction of magnesia, impurity incorporation into the secondary MgO surface layer, and calcium‐rich phase ...
Alexander Schramm, Jana Hubálková, Christian Schimpf, Thomas Schemmel, Christos G. Aneziris, Anja Weidner, Horst Biermann   +6 more
wiley   +1 more source

Tunnel Geology Prediction Using a Neural Network Based on Instrumented Drilling Test

Applied Sciences, 2020
Reliable geology prediction is of great importance in ensuring the stability and safety of tunnels and other underground engineering projects. This paper presents basic neural network and deep neural network models using a genetic algorithm (GA) to ...
Yuwei Fang, Zhenjun Wu, Qian Sheng, Hua Tang, Dongcai Liang   +4 more
doaj   +1 more source

Genetic Optimization of Machining Parameters Affecting Thrust Force during Drilling of Pineapple Fiber Composite Plates – an Experimental Approach

Journal of Natural Fibers, 2022
Natural fibers replace synthetic reinforcing fibers in polymer composites due to its biodegradability, strength, and satisfactory adhesion to the polymer matrix.
J. Lilly Mercy, P. Sivashankari, M. Sangeetha, K.R. Kavitha, S. Prakash   +4 more
doaj   +1 more source

Analisa dan Simulasi Gaya Potong pada Proses Machine Drilling dengan Menggunakan Software Ansys [PDF]

, 2013
Drilling process is a cutting metal process with multiple point cutting are used to make cylindrical holes. The process parameters used in drilling process are cutting speed, feed rate and depth of cut.
Rahman, M. I. (Muhammad), Setiawan, L. F. (Listy), Shofa, A. N. (Ahmad)   +2 more
core  

Intelligent Surrounding Rock Grade Identification Combining XGBoost Algorithm and Drilling Parameters of Drill Jumbo [PDF]

, 2022
Guoqiang Huang, Chengjin Qin, Feixiang Liu, Ruihong Wu, Jianfeng Tao, Chengliang Liu, Jinjun Liao   +6 more
openalex   +1 more source

Al–Cu Composite Casting of Laser‐Deoxidized Copper: Bonding, Interfacial Chemistry, and Thermal Conductivity

Advanced Engineering Materials, EarlyView.
This study investigates laser‐based oxide removal of Cu inserts in oxygen‐free conditions and examines long‐term oxidation kinetics and surface chemistry under different atmospheres via X‐ray photoelectron spectroscopy. Al–Cu compound casting with differently oxidized surfaces is performed, and intermetallic phase formation, morphology, and thermal ...
Timon Steinhoff, Finn‐Lennard Janthur, Sascha Zimmermann, Sarah Seffer, Jörg Hermsdorf, René Gustus, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Christian Klose   +9 more
wiley   +1 more source

Distribution law of 3D anti-drilling characteristic parameters in Shunbei block

Shenzhen Daxue xuebao. Ligong ban
Based on the characteristics such as lithology, a predictive model for anti-drilling characteristic parameters suitable for the Shunbei block was selected.
JIN Yonghong, LI Shuanggui, CHEN Shuai, CHEN Xiuping, LIU Jingtao, YU Yang, SHI Xiangchao   +6 more
doaj   +1 more source