Results 101 to 110 of about 145,679 (305)

Microsphere‐Modulated Sensing‐in‐Energy Supercapacitor With Self‐Filtering Ultra‐Large Signal Under High‐g Shocks

Advanced Science, EarlyView.
To overcome severe signal oscillation under extreme impact conditions, this work presents a Sensing‐in‐Energy microdevice which integrates a MEMS inertial structure directly within a supercapacitor electrolyte cavity. Utilizing shock‐driven transient contact and electrolyte damping for signal self‐filtering, it achieves weak‐oscillation, large ...
Zhihao Zheng, Yiqun Wang, Kaiyou Liu, Shancheng Luan, Yajiang Yin, Xiaofeng Wang, Keren Dai, Zheng You   +7 more
wiley   +1 more source

Experimental and numerical study on the energy dissipation behavior of carbonyl iron powder/shear-thickening composites under high-energy impact [PDF]

AIP Advances
Shear-thickening materials exhibit rate-dependent mechanical responses. However, their intrinsic physical characteristics and dynamic performance under high-energy impact loading remain insufficiently studied.
Yankai Fu, Chengbin Du, Hanyan Wang, Maohui Ge   +3 more
doaj   +1 more source

Insulation bonding test system [PDF]

, 1984
A method and a system for testing the bonding of foam insulation attached to metal is described. The system involves the use of an impacter which has a calibrated load cell mounted on a plunger and a hammer head mounted on the end of the plunger.
Beggs, J. M., Coleman, A. D., Johnston, G. D., Porter, A. C., Portwood, J. N., Redmon, J. W., Saunders, J. M.   +6 more
core   +1 more source

Experimental Testing of Burglar Resistance of Fenestration [PDF]

, 2019
Currently, windows and glass facades are increasingly being used as a building envelope. These are elements that are functional and aesthetic, but there is a need to focus on their safety.
Figuli, Lucia, Jankura, Richard
core   +1 more source

Unity Quantum Yield of High‐Entropy Quantum Dots Composited With Photonic Crystals for Information Encryption

Advanced Science, EarlyView.
This study first extends the high‐entropy concept to I‐III‐VI quantum dots (QDs) and synthesizes CZCrGSe/ZnSe/ZnS core/shell/shell QDs with a record photoluminescence quantum yield (PLQY) of 100%. Their ZnSe/ZnS double shell efficiently passivates defects and boosts structural stability.
Maoyuan Huang, Ziqiang Tian, Binkun Xie, Haiyang Li, Bo Tan, Chang He, Shiliang Mei, Wanlu Zhang, Changchun Wang, Ruiqian Guo   +9 more
wiley   +1 more source

Concrete production using marble powder and marble coarse aggregates: an analysis of mechanical properties and sustainability

Budownictwo i Architektura
The growing demand for concrete driven by infrastructure and urbanization puts pressure on natural resources and harms the ecosystem. Using recycled materials like waste marble powder (WMP) and marble coarse aggregates (MCA) in concrete can address this
Saloua Filali, Abdelkader Nasser
doaj   +1 more source

Rejuvenated Amorphous Alloys: Processing Methods, Microstructures and Mechanical Properties

Advanced Science, EarlyView.
Three rejuvenation methods – mechanical and thermal rejuvenation, and other rejuvenation routes such as ultrasonic processing – can be used to modify structures of glassy alloys, especially atomic clusters, and therefore enhances plasticity and activates work‐hardening behaviors.
Can Yang, Yu Chen, Chunguang Tang, Si Lan, Jun Tan, Heng Ye, Hua Chen, Zhifu Yao, Jürgen Eckert, Dongxian Zhang, Jian‐Zhong Jiang   +10 more
wiley   +1 more source

Aseismic performances of constrained damping lining structures made of rubber-sand-concrete

Journal of Rock Mechanics and Geotechnical Engineering
Flexible damping technology considering aseismic materials and aseismic structures seems be a good solution for engineering structures. In this study, a constrained damping structure for underground tunnel lining, using a rubber-sand-concrete (RSC) as ...
Xiancheng Mei, Qian Sheng, Jian Chen, Zhen Cui, Jianhe Li, Chuanqi Li, Daniel Dias   +6 more
doaj   +1 more source

Ground Simulation Test of 2D Dynamic Overload Environment of Fuze Launching

Shock and Vibration, 2020
The fuze launch process is subjected to backseat and spin overloads. To address this issue, a loading method of a 2D dynamic acceleration environment was developed in this study for testing fuze antioverload performance on ground.
Zhibo Wu, Tiehua Ma, Yanbing Zhang, Hongyan Zhang   +3 more
doaj   +1 more source

Machining stability and machine tool dynamics [PDF]

, 2007
Machining is a common manufacturing process in industry due to its high flexibility and ability to produce parts which excellent quality. The productivity and quality in machining operations can be limited by several process constraints one of which is ...
Budak, Erhan
core