Results 41 to 50 of about 37,630 (312)

Experimental and Numerical Modal Analysis of Composite Sandwich Structures Using Surfboards as Model Systems

open access: yesAdvanced Engineering Materials, EarlyView.
This article presents an experimental and numerical modal investigation of composite sandwich structures using surfboards as model systems. By comparing different core materials and reinforcement strategies, the study demonstrates how local stiffeners influence vibrational response and introduce characteristic modal features, highlighting modal ...
Brett Connellan   +4 more
wiley   +1 more source

Parallel Load-Bearing and Damping System Design and Test for Satellite Vibration Suppression

open access: yesApplied Sciences, 2020
The traditional series-type satellite vibration suppression scheme significantly decreases satellite frequency, which leads to difficulty in controlling the amplitude.
Shenyan Chen   +5 more
doaj   +1 more source

Two-dimensional coupled vortex-induced vibration of circular cylinder : prediction and extraction of hydrodynamics properties [PDF]

open access: yes, 2013
This paper discusses two-dimensional coupled vortex-induced vibration of circular ...
Narakorn Srinil   +3 more
core   +1 more source

Ultrasensitive Anti‐Stokes Luminescence Thermometry in Transition Metal Dichalcogenide Monolayers

open access: yesAdvanced Functional Materials, EarlyView.
We demonstrate a highly sensitive nanothermometer using anti‐Stokes photoluminescence, also known as photoluminescence upconversion (UPL), in monolayer tungsten disulfide. A strong resonantly enhanced UPL is observed, confirming the central role of optical phonons in the PL upconversion mechanism.
Sharada Nagarkar   +6 more
wiley   +1 more source

The numerical calculation method based on equivalent frequency-independent time-domain damping model

open access: yesJournal of Low Frequency Noise, Vibration and Active Control, 2022
In order to realize the time-domain analysis based on hysteretic damping model, the frequency-independent time-domain damping model of single degree of freedom (SDOF) system is constructed.
Panxu Sun, Shuxia Wang, Dongwei Wang
doaj   +1 more source

Interlayer Expansion of Bulk MoS2 via Top‐Down Organic Pillaring Enables Tunable Li+ Intercalation and Controlled Solvent Co‐Intercalation

open access: yesAdvanced Functional Materials, EarlyView.
Top‐down organic pillaring expands the interlayer spacing of bulk‐sized MoS2 particles while preserving the bulk morphology. Operando X‐ray diffraction and electrochemical dilatometry show that MoS2‐bulk undergoes solvent co‐intercalation in diglyme electrolyte, causing large structural expansion, while pillared, expanded MoS2 suppresses solvent uptake
Jaehoon Choi   +8 more
wiley   +1 more source

Experimental Study on the Influence of the Viscosity of ISFD Damping Fluid on Vibration Reduction Characteristic of Gear Shafts

open access: yesJixie chuandong, 2019
Because of the higher viscosity and good thermal stability, the dimethyl silicone oil is considered as a damping fluid for integral squeeze film damper (ISFD).
Kaihua Lu   +4 more
doaj  

Evaluation of various fluid-film models for use in the analysis of squeeze film dampers with a central groove [PDF]

open access: yes, 2002
Experimental vibration responses of squeeze film dampers (SFDs) are obtained with four different central groove depths, two types of lubricant and various unbalance levels.
Hill, M.   +5 more
core   +1 more source

Targeting Post‐Irradiation Thyroid Dysfunction: Electrospun Scaffolds As A Dual‐Action Approach for Antioxidant and Immune Modulation

open access: yesAdvanced Healthcare Materials, EarlyView.
Radiation‐induced hypothyroidism follows head and neck radiotherapy due to oxidative stress and inflammation. Electrospun polycaprolactone scaffolds containing adenosine have potential to modulate thyroid repair. Scaffolds enhance thyrocyte proliferation, antioxidant enzymes glutathione peroxidase and catalase, reduce senescence and apoptosis markers ...
Maria Heim   +5 more
wiley   +1 more source

A self-mixing laser sensor design with an extended kalman filter for optimal online structure analysis and damping evaluation [PDF]

open access: yes, 2007
We have developed a new algorithm based on the extended Kalman filter, in order to improve the resolution of an optical displacement sensor. This new non contact sensor which provides vibration measurement with a very good accuracy might be used for ...
Bès, Caroline   +4 more
core   +1 more source

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