Results 111 to 120 of about 815,753 (200)

Toward Pore‐Engineered 3D‐Printed Materials for Sorption Water Harvesting, Interfacial Evaporation, and Radiative Cooling

Advanced Materials, EarlyView.
Water harvesting, radiative cooling, and interfacial solar evaporation are fundamentally governed by coupled heat, mass, and light transport processes. These processes are mediated by pore architecture, including pore size, connectivity, and hierarchical organization.
Dejan J. Trajkovski, Higgins M. Wilson, Abdallah Y. M. Ali, Jiaxing Xu, Ruzhu Wang, Primož Poredoš   +5 more
wiley   +1 more source

Noise of elastic vibrations of the helicopter blade under an aerodynamic load

Авіаційно-космічна техніка та технологія
This study develops a theoretical model of vibration-induced noise generation in helicopter blade elastic vibrations. Vibration and aerodynamic noises are generated during helicopter rotor rotation.
Petro Lukianov, Sergii Karmazin
doaj   +1 more source

Inductively Expandable Supraparticles as Microscopic Force Generators for Remote Mechanical Actuation

Advanced Materials, EarlyView.
This study demonstrates the combination of magnetic nanoparticles and functional blowing agents into supraparticles. Upon induction heating, they actuate via rapid gas generation or extensive volume expansion. These supraparticles lift up to 25 000 times their own mass and rapidly open cured epoxy resins, providing a versatile strategy for fast micron ...
Leoni Luthardt, Stephan Müssig, Robert Luxenhofer, Karl Mandel   +3 more
wiley   +1 more source

Radiative Thermal Management for Extreme Environments: Mechanisms and Design Strategies

Advanced Materials, EarlyView.
In this review, we discuss the fundamental mechanisms of radiative cooling and solar heating, material and structural design strategies, hybrid approaches integrating additional heat transfer pathways, and durability‐oriented designs addressing environmental stresses.
Hyung Rae Kim, Haeseong Kim, Joo Hwan Ko, Gil Ju Lee, Dae‐Hyeong Kim, Young Min Song   +5 more
wiley   +1 more source

Double-frequency stator core vibration in large two-pole turbogenerators

, 1990
This Thesis describes the development of a model to represent the variation with load and excitation of double-frequency stator core vibration in large two-pole turbogenerators.
Tampion, Ariadne Ann
core   +1 more source

Vibration Reduction Technology for Under-Car Equipment in Rail Transit Vehicles Based on Negative Stiffness Hanging Design

Chengshi guidao jiaotong yanjiu
ObjectiveCarbody vibration in rail transit vehicles has become increasingly prominent. Traditional rubber elastic suspensions have a fixed vertical-to-lateral stiffness ratio，making it difficult to simultaneously optimize vertical and lateral vibration ...
Weiguang SUN, Lixiang GU, Hongfeng GE, Guoshun LI, Dao GONG   +4 more
doaj   +1 more source

Saturated duration for dynamic structural plastic response and fundamental periods of elastic vibration

, 1998
The relationship is determined between saturated duration of rectangular pressure pulses applied to rigid, perfectly plastic structures and their fundamental periods of elastic vibration.
赵亚溥, Zhao, YP (reprint author), Chinese Acad Sci, Inst Mech, Lab Nonlinear Mech Continuous Media LNM, Beijing 100080, Peoples R China.   +1 more
core   +1 more source

Strong Fully Reprocessable Engineered Wood Composites

Advanced Materials, EarlyView.
Engineering a hyperbranched adhesive with complementary imine‐bond and hydrogen‐bond networks, combining it with wood particles to fabricate the wood composite (WP/HTP) under mild hot‐pressing conditions. The WP/HTP exhibits 100% mechanical strength recovery after three cycles of reprocessing, and the reprocessed modulus of rupture (MOR) and modulus of
Xilin Zhang, Zheng Liu, Zhezhe Zhou, Mark Lynch, Jianzhang Li, Paulomi Burey, Jingchao Li, Cheng Zhang, Qiang Gao, Pingan Song   +9 more
wiley   +1 more source

Tłumienie Falami Naprężeń w Belkach Sprężystych

Engineering Transactions, 1958
An analogy is indicated between vibrations in elastic bodies and in liquids. In a number of cases of forced vibration of infinite elastic beams, reaction forces of these beams are found.
J. Więckowski
doaj  

A New Type of Dynamic Vibration Fiber Sensor

Sensors
A new-type vibration sensor based on a fiber Bragg grating combined with a special structure-packaged design is proposed for monitoring the mechanical vibration signals.
I-Nan Chang, Chih-Chuan Chiu, Wen-Fung Liu   +2 more
doaj   +1 more source