Results 41 to 50 of about 122,703 (243)

Design of Temperature Fluctuation Test Platform Based on Radiation Heat Transfer

MATEC Web of Conferences, 2019
The optical characteristics of the space science detectors are very sensitive to the temperature fluctuation. In order to study the effect of it, a method to simulate the temperature fluctuation was put forward in this paper, and the feasibility of this ...
Xiao Han, Ying Zhou, Ruijin Jia, Wang Zijuan   +3 more
doaj   +1 more source

In Situ X‐Ray Tomography and Acoustic Emission Monitoring of Damage Evolution in C/C‐SiC Composites Fabricated by Liquid Silicon Infiltration

Advanced Science, EarlyView.
This study investigates how the internal structure of fiber‐reinforced ceramic composites affects their resistance to damage. By combining 3D X‐ray imaging with acoustic emission monitoring during mechanical testing, it reveals how silicon distribution influences crack formation.
Yang Chen, Renato S. M. Almeida, Stefan Flauder, Guillaume Couégnat, Kamen Tushtev, Jürgen Horvath, Peter Wriggers, Kurosch Rezwan   +7 more
wiley   +1 more source

Research of the Technology and Application of Spacecraft Assembly Data-package Construction Based on MBD

MATEC Web of Conferences, 2016
In order to implement spacecraft assembly based on MBD, this article proposes a method to construct data-package automatically based on 3D model. First, an Assembly Digital Mock-up (ADMU) is constructed.
Wan Bi Le, Chen Chang Yu, He Wen Xing
doaj   +1 more source

Rod Origami (RodOri) Spring Metamaterials for Tunable Vibration Control via Tailored Structural Instabilities

Advanced Science, EarlyView.
Rod Origami (RodOri) springs harness snap‐through instabilities of pre‐stressed curved rods with geometrically programmable buckling behavior. Integrating RodOri springs with distinct geometries yields multistable metamaterials that undergo stepwise reconfiguration via sequential snapping, achieving wide‐range tunability of stiffness and resonance ...
Jeseung Lee, Sophie Leanza, Ruike Renee Zhao   +2 more
wiley   +1 more source

Bio‐Inspired Bidirectional Winding Origami With Programmable Modular Reconfigurability and Scalability

Advanced Science, EarlyView.
A bio‐inspired bidirectional‐winding origami platform enables scalable and programmable deployable structures. Double axial folding inspired by earwig hindwings and Flasher‐based hybridization create modular multilayer architectures with diverse attainable winding angles under fixed boundary conditions.
Wenyao Zhang, Chunlong Wang, Mingli Liu, Chuang Shi, Hongwei Guo, Rongqiang Liu   +5 more
wiley   +1 more source

Study on thermal analysis simulation and test of propellant refueling process for optical module

Xibei Gongye Daxue Xuebao
Propellant refueling is important for long-term operation of the optical module in orbit. However, its thermal environment is harsher than on previous missions. Therefore, thermal control of the entire process is required.
LU Wei, ZHANG Ningli, WANG Shuai, FENG Maolong, FAN Hanlin   +4 more
doaj   +1 more source

Engineering Dirac Cones in Graphene for Efficient Iodide Catalysis: Insights by Nanoscale Electrochemistry

Advanced Science, EarlyView.
Graphene iodide oxidation is regulated by Dirac cone engineering. Electrostatic gating tunes the Fermi level to control local iodide oxidation reaction activity, while magic‐angle twisted bilayer graphene creates flat‐band‐derived interfacial states that promote charge transfer and iodine‐species interaction, revealing a nanoscale route to electronic ...
Yang‐Sheng Lu, Kuo‐En Chang, Ta‐Lei Chou, Aitor Garcia‐Ruiz, Ting‐Han Lin, Yen‐Ting Liu, Akichika Kumatani, Ming‐Hao Liu, Kenji Watanabe, Takashi Taniguchi, Ming‐Wen Chu, Tse‐Ming Chen, Chun‐Wei Chen, Shao‐Sian Li   +13 more
wiley   +1 more source

A Multifunctional Mesoporous Janus Separator With Optimized Mass Transport Regulation Enabling 800‐Cycle Lithium‐Oxygen Batteries

Advanced Science, EarlyView.
To resolve the fundamental cycling decay of lithium‐oxygen batteries arising from lithium dendrite propagation, anode corrosion, and cathode passivation, we fabricate a mesoporous silica/polyurethane Janus separator integrating interfacial protection and mass transport modulation, which markedly enhances battery cycling stability and cycle life ...
Hailiang Mu, Anlong Liu, Kun Luo, Yaming Pang, Chengde Xie, Xiaoteng Liu, Zhihong Luo, Guangbin Zhu, Yucheng Wang, Qirong Liu, Yongbing Tang   +10 more
wiley   +1 more source

Damage Effects of Electron Irradiation with Different Energy on Mechanical Properties of Polyethylene Heat-shrinkable Sleeves

Journal of Aeronautical Materials, 2016
Damage effects of electron irradiation with different energy on mechanical properties of polyethylene heat-shrinkable sleeves were studied by irradiating the sleeves with 45 keV, 1 MeV and 2 MeV electrons respectively.
LIU Yuming, ZHAO Chunqing, LI Man, ZHANG Kai, SHEN Zicai   +4 more
doaj   +1 more source

Orbit Design Elements of Chang’e 5 Mission

Space: Science & Technology, 2021
The three key orbit design technologies employed in the Chang’e 5 mission are identified and discussed in this paper: orbit design for lunar orbit rendezvous and docking, orbit design for precision lunar landing and inclination optimization, and orbit ...
Zhong-Sheng Wang, Zhanfeng Meng, Shan Gao, Jing Peng   +3 more
doaj   +1 more source