Results 61 to 70 of about 80,596 (262)
, 2012 The tonal noise or vibration of air-cooled or water-cooled chillers with rotary twin screw compressors is crucial for environmental concerns. This work aims to perform the receiver tests regarding the radiated noise and structural vibration due to the ...
Hsieh, Chang-Hung +3 more
core
A comparison between different optimization criteria for tuned mass dampers design [PDF]
, 2010 Tuned mass sampers (TMDs) are widely used strategies for vibration control in many engineering applications, so that many TMD optimization criteria have been proposed till now.
Greco, R. +4 more
core
Journal of Low Frequency Noise, Vibration and Active Control, 1990 A prototype of a low frequency differential-piezoelectric accelerometer is described. It has the function that the vibration signals can be transformed to a pair of push-pull signals which are out of phase. But for the non-vibration signals, such as the environmental temperature transient sensitivity, the out-puts are all in phase.
openaire +1 more source
Role of Intrinsic Electron Trapping in Negative Charging of Amorphous Alumina
Advanced Functional Materials, EarlyView.Intrinsic electron trapping in amorphous Al2O3 is examined using hybrid‐DFT models spanning a wide density range. Both spontaneous and thermally activated trapping are identified, with pronounced spontaneous localization in dense, partly crystallized structures.
Jack W. Strand +5 more
wiley +1 more source
Experimental study on active vibration isolation by wib in layered ground under vertical loading
, 2009 link_to_OA_fulltextThe 4th International Symposium on Environment Vibration: Prediction, Monitoring and Evaluation (ISEV2009), Beijing, China, 28-30 October 2009. In Environmental Vibrations: Prediction,Monitoring, Mitigation and Evaluation - Proceedings
Li, N, Gao, GY, Yue, QZQ
core
Advanced Functional Materials, EarlyView.Multiscale experiments and modeling reveal how Ti3C2Tx MXene nanosheets reinforce PVDF nanocomposites. An optimal MXene loading (∼1 wt.%) nearly doubles tensile strength through efficient stress transfer, flake alignment, and crack‐deflection mechanisms, transforming ductile polymer behavior into a controlled multi‐stage fracture pathway which aligns ...
Bita Soltan Mohammadlou +5 more
wiley +1 more source
The experimental response of a broadband base-excited vibration isolator incorporating cubic damping
, 2013 Structural damping is often assumed to be viscous and linear which leads to comparatively straightforward vibration analysis. In the case of vibration isolation mounts this assumption of linearity is particularly questionable and one might want to know ...
Ferguson, N.S. +2 more
core
Omnipolar Magnetic Field Detection by Superlattice‐Based Hall Sensor
Advanced Functional Materials, EarlyView.Magnetic‐field‐induced electronic switching is demonstrated in unit‐cell‐engineered La0.7Sr0.3MnO3–BiFeO3 superlattices. Distinct substrate terminations modify magnetic and transport properties. Hall resistance measurements show omnipolar, hysteretic anomalous Hall switching above the Curie temperature, arising from Fe─Mn interfacial exchange, enabling
Mark Huijben +6 more
wiley +1 more source
X‐Functionality–Driven Photocatalytic Hydrogen Evolution in 2D 4‐X‐PEA2SnI4 Perovskites
Advanced Functional Materials, EarlyView.We report a water‐based synthesis of 2D 4‐X‐PEA2SnI4 perovskite microcrystals with prominent photocatalytic (PC) activity for H2 production. The synergy between organic functionalization and HI‐derived iodide scavenges holes suppress octahedral distortion, and favor electron accumulation, enabling a PC H2 evolution ∼20 µmol·g−1 and long‐term stability ...
Taeyeon Kim +21 more
wiley +1 more source