⚡ electrical engineering

Natural visibility graph-based multiscale dispersion entropy for chatter identification in thin-walled parts finishing milling

This paper proposes an intelligent chatter identification method for thin-walled parts finishing milling that combines second-order generalized synchrosqueezing transform for signal reconstruction with natural visibility graph-based multiscale dispersion entropy for feature extraction, achieving high recognition accuracy through a crayfish optimization algorithm-optimized support vector machine.

ZeRui Bai, Junxue Ren, Weijun Tian, Yizhuo Wang2026-07-06
⚡ electrical engineering

Investigation into the material removal mechanism and surface integrity of Zr-based bulk metallic glass via rotary ultrasonic vibration grinding

This study demonstrates that rotary ultrasonic vibration-assisted grinding (RUVAG) significantly improves the surface integrity and reduces material removal defects of Zr-based bulk metallic glasses compared to conventional grinding by introducing intermittent contact that mitigates stress concentration and lowers surface roughness by approximately 21%.

Guijiu Xie, Yunfeng Liao, Xufeng Tang, Junsheng Gao, Xinyi Li, Wenqing Ding, Yan Wang, Zhongpeng Zheng2026-07-06
⚡ electrical engineering

Development of a Wire-Renewal EDM Milling Electrode for Fabricating Microlens Array Molds with High Shape Accuracy on Tungsten Carbide

This study proposes and validates a novel wire-renewal EDM milling electrode that overcomes traditional electrode wear limitations to fabricate high-accuracy microlens array molds on tungsten carbide through optimized rotationally averaged annular discharge.

Md Nasir Uddin, Fubin Ma, Tianfeng Zhou, Liheng Gao, Gang Wang, Weijia Guo2026-07-06
⚡ electrical engineering

Gas-assisted acidification realizes low-cost deep plugging removal of oil wells

This study proposes and validates a gas-assisted acidizing technology that effectively removes deep plugging (≥3 m) in Bohai Oilfield polymer-flooded heavy-oil reservoirs by alternating nitrogen and acid injection to enhance penetration and permeability recovery, resulting in significant production increases in field tests.

Xiaonan Yuan, Shang Gao, Jian Zou, Yangyang Fu, Liping Zhang2026-07-06
⚡ electrical engineering

Nanoparticle-Enhanced Polymeric Fluid for Sand Control in Unconsolidated Petroleum Wells

This study demonstrates that incorporating SiO₂ nanoparticles into a furan-based polymeric fluid significantly enhances the unconfined compressive strength and thermal stability of chemical sand consolidation in unconsolidated petroleum wells while preserving reservoir permeability, offering a robust and cost-effective alternative to conventional mechanical sand-control methods.

Amir Mirzaei, Ehsan Khamehchi, Mahmoud Akbari, Hooman Banashooshtari2026-07-06