Results 121 to 130 of about 29,621 (297)

Unsteady Flow Behaviors and Vortex Dynamic Characteristics of a Marine Centrifugal Pump under the Swing Motion

Machines
Due to the effects of swing motion, the performances and internal flow characteristics of marine centrifugal pump undergo some unsteady variations in the marine environment. The hydraulic test system with six degree of freedom parallel motion platform is
Ye Yuan, Abdul Rahim Junejo, Jun Wang, Bo Chen   +3 more
doaj   +1 more source

A Unified Polymer Hydrogel Electrolyte Integrating Robust Adhesion, Self‐Healing, and Oxygen Permeability in Flexible Neutral Zn‐Air Batteries

Advanced Materials, EarlyView.
Flexible neutral Zn‐air batteries achieving a remarkable 3000‐cycle lifespan and withstanding 1000 bending cycles are reported. This performance is realized by employing a 3D physically cross‐linked neutral hydrogel electrolyte that integrates high adhesion, self‐healing, O2 permeability, and CO2 tolerance to resolve critical stability challenges ...
Zhenyu Sun, Kaiming Liao, Wei Zhou, Zongping Shao   +3 more
wiley   +1 more source

On the Roll Motion of a Trimaran in Beam Waves

, 2001
The roll motion of a trimaran ship composed of three Wigley hulls in beam waves has been studied on an experimental basis. Two different configurations as regards hull separation were combined with two longitudinal positions of outriggers. A mathematical
FRANCESCUTTO, ALBERTO
core  

A Coupled SVM-NODE Model for Efficient Prediction of Ship Roll Motion

Journal of Marine Science and Engineering
Traditional analyses of ship roll damping and added moment of inertia rely on free roll decay and forced roll tests, but acquiring linear (small angles) and nonlinear (large angles) relationships demands extensive computational cases and parameter ...
Yaxiong Zheng, Fei Peng, Zhanzhi Wang, Siwen Tian   +3 more
doaj   +1 more source

Soft Hardware, Flowing Software: Reconfigurable Microfluidics for Adaptable Chemical Computation

Advanced Materials, EarlyView.
A reconfigurable microfluidic platform based on soft, photo‐printable, and chemically erasable hydrogel structures printed and erased in situ is used to control flow routing, mixing, chemical patterning, and even chemical computing. Using hardware to control chemical computations decouples logic function from molecular composition, demonstrated via ...
Piet J. M. Swinkels, Brigitta Dúzs, Oliver Skarsetz, Kohei Nishiyama, Andreas Walther   +4 more
wiley   +1 more source

All‐Polyimide‐Mediated Liquid Metal Assembly on Aerogels for Breathable and Robust Electronic Skins

Advanced Materials, EarlyView.
An all‐polyimide‐mediated assembly strategy resolves the fundamental conflict between physiological breathability and electromechanical robustness in wearable electronics. By integrating a polyamic acid‐encapsulated liquid metal ink onto an ultralight polyimide aerogel, imidization‐induced contraction enables low‐temperature conductive activation and ...
Haijun Zhu, Jiancheng Dong, Hao Qiu, Je Hyeong Kim, Xingyu Liu, Shiyin Lin, Mengting Zheng, Chang Zhou, Yuduo Zhang, Jiayu Hou, Kangjia Geng, Yuchen Wang, Yidong Peng, Haoran Liu, Guanzheng Wu, Yunpeng Huang, Yongsheng Luo, Steve Park, Tianxi Liu   +18 more
wiley   +1 more source

Numerical study of scale effects of viscous roll damping for a container ship

Brodogradnja
In this paper, the scale effects on a container ship’s roll motion are investigated by numerical approach. The accuracy of the numerical method is verified by comparing numerical results with experimental data through a grid sensitivity study.
Nguyen Thi Ha Phuong, Tomoki Taniguchi, Toru Katayama   +2 more
doaj   +1 more source

High Center‐of‐Mass, Multi‐Legged Soft Robots Powered by Geometrically Encoded Liquid Crystal Elastomer Arc Appendages

Advanced Materials, EarlyView.
Inspired by the octopus and the golden wheel spider, soft robots with liquid crystal elastomer arc fibers as appendages are fabricated to transcend surface constraints through an elevated center of mass and minimal contact footprints. By leveraging curvature‐encoded deformation‐recovery cycles, these robots exhibit contractile, torsional, and flexural ...
Jong Bin Kim, Antonio Proctor Martinez, Yaoye Hong, Ziyun Zhang, Kun‐Yu Wang, Shu Yang   +5 more
wiley   +1 more source

Improved ship roll motion performance with combined EKF parameter estimation and MPC control [PDF]

Roll motion reduction is a critical operational challenge for ships operating in a seaway. This paper presents a nonlinear roll dynamics model for a gulet model ship equipped with active fins.
Kahramanoglu, Emre, Çakıcı, Ferdi, Peri, Fuat, Ugur, Mehmet, Oğur, Mehmet Utku, Kucukdemiral, Ibrahim Beklan; id_orcid, Jambak, Ahmad Irham, Karabuber, Ahmet Kaan, Şahin, Ömer Sinan, Uğur, Mehmet Akif, Karabuber, Ahmet, Küçükdemiral, İbrahim, Sahin, Omer, Jambak, Ahmad, Ogur, Mehmet, Cakici, Ferdi   +15 more
core   +1 more source

Influence of Carbon Nanoparticles on Electrically Induced Wear of Grease‐Lubricated Steels

Advanced Materials Interfaces, EarlyView.
When an electric current enters a pair of rubbing surfaces, enormous damage takes place. In this research, how such damage occurs in the presence of protective grease and the mitigation with added carbon nanoparticles, were investigated. It was discovered that those particles regulate transport and interfacial electrical stability of the grease ...
Mohammad Humaun Kabir, Darrius Dias, Jacob Bons, MD Wasek Foysal, Evan Johnson, Joe Kosmoski, Hong Liang   +6 more
wiley   +1 more source