Results 41 to 50 of about 193,144 (316)

Control technology of drilling fluid performance in horizontal directional crossing of Tongming Strait by product pipeline

You-qi chuyun, 2021
As the environmental protection requirements for surrounding sea areas of Tongming Strait are high, the crossing strata are complex and changeable, the underground fresh water and sea water appear alternately, the crossing section is long with large ...
Yuguang MING, Chuanfu WANG, Qiang LAN, Hui LI, Zhendong LIU, Shuquan LYU   +5 more
doaj   +1 more source

Planar Solid‐State Nanopores Toward Scalable Nanofluidic Integration Based on CMOS Technology

Advanced Engineering Materials, EarlyView.
We present a scalable silicon‐based fabrication strategy for planar solid‐state nanopores to enable their integration with complex nanofluidic systems. Prototype devices demonstrate normal voltage‐current characteristics, good noise performance, and appreciable streaming currents. Our CMOS‐compatible fabrication process offers precise geometric control
Ngan Hoang Pham, Chenyu Wen, Mohammad Hadi Khaksaran, Won‐Yong Lee, Javier Cruz, Klas Hjort, Dongping Wu, Shi‐Li Zhang   +7 more
wiley   +1 more source

Study of the local forces along a drill edge – comparison of two methodologies [PDF]

, 2013
In aerospace applications, drilling is one of the most common operations. However, this machining stays complex and expensive, especially in hard to cut materials. Because of the closed aspect of the operation, the measure or evaluation of the phenomenon
M'SAOUBI, Rachid, ABRIVARD, Guillaume, POULACHON, Gerard, POUTORD, Antoine, ROSSI, FREDERIC   +4 more
core  

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

Phase Field Failure Modeling: Brittle‐Ductile Dual‐Phase Microstructures under Compressive Loading

Advanced Engineering Materials, EarlyView.
The approach by Amor and the approach by Miehe and Zhang for asymmetric damage behavior in the phase field method for fracture are compared regarding their fitness for microcrack‐based failure modeling. The comparison is performed for the case of a dual‐phase microstructure with a brittle and a ductile constituent.
Jakob Huber, Jan Torgersen, Ewald Werner
wiley   +1 more source

Proceedings of the Integrated Ocean Drilling Program 307: Modern Carbonate Mounds: Porcupine Drilling

, 2006
<p>Challenger Mound, a prominent mound structure covered with dead cold-water coral rubble on the southwest Irish continental margin, was the focus of 12 days of scientific drilling aboard the <em>JOIDES Resolution</em> during ...
Sasaki, Keiichi, Titschack, Jürgen, Foubert, Anneleen, Browning, Emily L., Gharib, Jamshid J., Frank, Tracy D., Bjerager, Morten, Andres, Miriam S., Li, Xianghui, Léonide, Philippe, Gaillot, Philippe, Abe, Kohei, Mangelsdorf, Kai, Huvenne, Veerle Ann Ida, Novosel, Ivana, Samarkin, Vladimir, Kano, Akihiro, Williams, Trevor, Fuwa, Yuji, De Mol, Ben, Spivack, Arthur J., Takashima, Chizura, Ferdelman, Timothy G., Cragg, Barry, Sakai, Saburo   +24 more
core   +1 more source

Key Technologies Measures for Drilling Ultra-Deep（>9 000 m）Horizontal Wells in Sichuan-Chongqing Region

Shiyou jixie
To provide experience and promote the development of deep and ultra-deep well drilling technology， taking Well SY001-H6 on the Shuangyushi structure in northwestern Sichuan Basin as an example， the characteristics of the formation and the problems ...
He Mingmin, Song Dongdong, Wang Jian, Lü Siduan, Chen Yousheng, Li Zijie, Tu Jianping   +6 more
doaj   +1 more source

Time‐Dependent Oxidation and Scale Evolution of a Wrought Co/Ni‐Based Superalloy

Advanced Engineering Materials, EarlyView.
This study shows how a new wrought Co/Ni‐based superalloy resists oxidation at 800 ∘$^\circ$C. The oxide scale changes from rough, fast‐growing spinel to a dense, protective chromia–alumina layer. Atom probe analysis reveals tiny refractory‐rich bubbles at the interface that mark the transition to long‐term, diffusion‐controlled protection ...
Cameron Crabb, Zachary T. Kloenne, Samuel R. Rogers, Chi Hang Dominik Kwok, Mark C. Hardy, Michele S. Conroy, David Dye   +6 more
wiley   +1 more source

Proceedings of the Integrated Ocean Drilling Program 346: Asian Monsoon

, 2015
<p>Integrated Ocean Drilling Program (IODP) Expedition 346 drilled seven sites covering a wide latitudinal range in the body of water bordered by the Eurasian continent, the Korean Peninsula, and the Japanese Islands, as well as two closely spaced ...
Irino, Tomohisa, Zheng, Hongbo, Lee, Gwangsoo, Holbourn, Ann E., Kubota, Yoshimi, Ikehara, Ken, Clemens, Steven C., Lopes, Cristina I.C.D., Gallagher, Stephen J., Anderson, Jr., William T., Sagawa, Takuya, Xuan, Chuang, Lofi, Johanna, Sugisaki, Saiko T., Kinsley, Christopher W., Saavedra Pellitero, Mariem, Henderson, Andrew C.G., Itaki, Takuya, Murray, Richard W., Giosan, Liviu, Wan, Shiming, Brace, Bobbi J., da Costa Gurgel, Marcio H., Toucanne, Samuel, Dunlea, Ann G., Karasuda, Akinori, Bassetti, Maria A., Singh, Raj K., Ziegler, Martin, Peterson, Larry C., Dickens, Gerald R., Tada, Ryuji, Alvarez Zarikian, Carlos A., Lee, Kyung Eun   +33 more
core   +1 more source

Experimental study on new structure teeth in a high-temperature environment

Science Progress
In high-temperature drilling, especially in high-temperature geothermal drilling, cone bits often experience common and severe tooth loss. This issue significantly reduces the cone bit's service life and has a detrimental impact on drilling efficiency ...
Dongdong Song, Yingxin Yang, Zhangping Ren, Jian Wang, Xianzhi He, Ya Huang, Siduan Lv, Kaizhi Yang, Song Peng, Hanyu Chen   +9 more
doaj   +1 more source