Results 91 to 100 of about 3,841 (276)

Research on key technologies for efficient rock-breaking equipment of high-torque hard rock drilling tools

Journal of Physics: Conference Series
Abstract To address technical bottlenecks such as insufficient power, low rock-breaking efficiency, poor directional control accuracy, and inadequate experimental testing capabilities in the horizontal directional crossing of hard rock formations, this study investigates key technologies for high-efficiency rock-breaking equipment ...
Qinwen Wei, Danyang Mei, Ming Chen, Xu Ji, Liuqing Yang   +4 more
openaire   +1 more source

Breaking the Durability–Power Trade‐Off: Boron‐Directed Faceted O3 Cathodes for High‐Rate Sodium‐Ion Batteries

Advanced Energy Materials, EarlyView.
Boron‐oxide‐assisted particle engineering stabilizes O3‐type layered cathodes for sodium‐ion batteries by mitigating phase transitions and lattice strain. Acting as flux and structural modifier, boron forms submicron hexagonal platelets with (003) facets and expanded Na‐layer spacing, enabling rapid Na⁺ diffusion and mechanical resilience.
Tengfei Song, Alexis Manche, Dongrui Xie, Bowen Liu, Chenglong Wu, Bo Dong, Reda Malakauskaite, Manoj Ovhal, David O. Scanlon, Emma Kendrick   +9 more
wiley   +1 more source

Experimental Study on Rock Cutting with the Combination of Conical Diamond Elements and Conventional PDC Cutters

Shiyou jixie, 2023
PDC bits with mixed cutters have performed well in enhancing rate of penetration(ROP)and drilling footage in oilfields.However,the design of such bits excessively depends on the designer's experience and lacks theoretical references and support of ...
Zhang Wenbo, Shi Huaizhong, Xi Chuanming, Zhang Nan, Xiong Chao, Chen Zhenliang   +5 more
doaj  

Effect of Soft–Hard Rock Composites on Rock Breaking Efficiency of TBM Disc Cutters in Deep Tunnels

Applied Sciences
Soft–hard composite strata are widely distributed in the surrounding rock of deep tunnels, which severely reduces TBM excavation efficiency. To elucidate the rock-breaking mechanism of TBM disc cutters in composite strata and to address unresolved issues related to cutter force evolution, a self-developed rotary cutting test platform was employed, and ...
Heng Sun, Weilong Tao, Chuang Jia, Fuquan Ji, Peishuai Chen, Xuewei Liu, Pengfei Liu, Xiaoxiang Peng, Bin Liu   +8 more
openaire   +1 more source

Emerging Materials and Future Strategies for Solid Oxide Electrochemical Cells

Advanced Energy Materials, EarlyView.
Solid oxide electrochemical cells operate under strongly coupled electrochemical and thermodynamic conditions, where performance is constrained by interactions among crystal structure, defect chemistry, and interfacial evolution. This review, based on a structure‐defect‐property‐durability framework, reveals the roles of lattice symmetry and defect ...
Qiuchun Lu, Yufei Zhang, Han Zhao, Pooi See Lee, Daniel H.C. Chua   +4 more
wiley   +1 more source

Smart Exploration of Perovskite Photovoltaics: From AI Driven Discovery to Autonomous Laboratories

Advanced Energy Materials, EarlyView.
In this review, we summarize the fundamentals of AI in automated materials science, and review AI applications in perovskite solar cells. Then, we sum up recent progress in AI‐guided manufacturing optimization, and highlight AI‐driven high‐throughput and autonomous laboratories.
Wenning Chen, Zheyu Zhang, Kelvian T. Mularso, Bonghyun Jo, Hyun Suk Jung   +4 more
wiley   +1 more source

On‐Demand Deconstructable Thermosets Through Cleavable Comonomer and Thermolatent Base Synergy

Angewandte Chemie, EarlyView.
Thermosets, valued for their chemical and mechanical properties, resist recycling due to their cross‐linked structure. Weak bonds via comonomers enable degradability, but diffusion limits effectiveness. We incorporate thermolatent bases before polymerization (thermal or 3D‐VAT printing).
Sophia Kouider, Loic Buchon, Luna Choulot, Paul Greuet, Julie Bratasanu, Patrick Désirée, Jessica Mauriello, Elsa Maarek, Jean‐Louis Clément, Laurence Charles, Emmanuelle Gastaldi, Damien Montarnal, Olivier Soppera, Didier Gigmes, Catherine Lefay, Yohann Guillaneuf   +15 more
wiley   +2 more sources

A Large Scale Multi‐Modal Workflow for Battery Characterization: From Concept to Implementation

Advanced Energy Materials, EarlyView.
Isolated characterization techniques produce independent datasets and single‐property insights. However, progressively more holistic interpretations of battery‐material behavior is needed in the future. Here we demonstrate a coordinated multimodal workflow enabling the correlation of heterogeneous datasets and the construction of multidimensional ...
François Cadiou, Cinthya Herrera, Duncan Atkins, Elixabete Ayerbe, Giorgio Baraldi, Stéphanie Belin, Anass Benayad, Didier Blanchard, Federico Capone, Ennio Capria, Isidora Cekic‐Laskovic, Robert Dominko, Kristina Edström, Ajay Gautam, Lukas Helfen, Antonella Iadecola, Quentin Jacquet, Gregor Kapun, Xinyu Li, Aleksandar Matic, Nataliia Mozhzhukhina, Andrew J. Naylor, Poul Norby, Chris O'Keefe, Alexandre Ponrouch, Jean‐Pascal Rueff, Elena Tchernykova, Deyana Tchitchekova, Israel Temprano, Nikita Vostrov, Marnix Wagemaker, Martin Winter, Christian Wölke, Tejs Vegge, Sandrine Lyonnard   +34 more
wiley   +1 more source

Characterizing Rock-Breaking Performance of PDC Cutters via Stability Metrics and Energy consumption in FDEM Simulations [PDF]

As oil production increasingly transitions from shallow to deep formation, the need for efficient PDC cutters to drill through deep hard rock becomes paramount.
Zhuoxin Dong, Jun Li, Yuting Zhou, Boyuan Yang, Xinrui Wang, Cheng Qin, Hui Zhang   +6 more
core   +1 more source

Analysis of Rock-Breaking Load Characteristics and Efficiency Optimization of Conical Cutterhead Hobs in Urban Hard-Rock SBM

Eng
To investigate the load characteristics and rock-breaking efficiency of the hobs on the conical cutterhead, a theoretical model of the hob’s rock-breaking load was established based on the plastic-brittle characteristics of rock, with a verification error of less than 5%.
Geqiang Li, Yunpeng Chen, Zhichong Qi, Dan Lyu, Shuai Wang, Zhenle Dong   +5 more
openaire   +1 more source