Results 71 to 80 of about 16,517 (291)

NEW MODEL IDEAS IN THE THEORY OF OSSILATION

Тонкие химические технологии, 2017
The article considers a new class of model representations in the theory of oscillation of systems described by the classical boundary value problems for hyperbolic equations.
E. M. Kartashov
doaj   +1 more source

Exponential solutions for a longitudinally vibrating inhomogeneous rod [PDF]

Journal of Mechanics of Materials and Structures, 2009
A special class of closed form solutions for inhomogeneous rods is investigated, arising from the follow- ing problem: for a given distribution of the material density, find the axial rigidity of an inhomogeneous rod so that the exponential mode shape serves as the vibration mode.
CALIO', Ivo Domenico, ELISHAKOFF I.
openaire   +2 more sources

3D Anodic Alumina Nanoarchitectures: A Decade of Progress from Foundational Science to Functional Metamaterials

Advanced Materials, EarlyView.
Ordered three‐dimensional anodic aluminum oxide (3D‐AAO) nanoarchitectures with longitudinal and transverse pores enable architecture‐driven metamaterials. The review maps fabrication advances, including hybrid pulse anodization, and shows how 3D‐AAO templates tailor properties across magnetism, energy, catalysis, and sensing.
Marisol Martín‐González
wiley   +1 more source

Study on the impact of vehicle-induced vibration on the flexural behavior of UHPC joints in widened bridges

Urban Lifeline
Bridge widening involves phased construction of adjacent structures to maintain uninterrupted traffic flow. This process exposes freshly placed longitudinal joints between staged deck constructions to vehicle-induced vibrations, potentially compromising ...
Jun Yang, Jingchen Leng, Jianting Zhou, Rui Chen, Kun Yu, Zhimei Jiang, Yang Zou, Zhongya Zhang, Jiang Du   +8 more
doaj   +1 more source

Ultrasonic rock drilling devices using longitudinal-torsional compound vibrations

, 2009
Nasa funded studies have proven that ultrasonics is a viable technology for extraterrestrial drilling. Previous research by the authors has indicated that ultrasonic longitudinal-torsional coupled vibrations may improve rock excavation.
Harkness, P., Andrea Cardoni, Lucas, M., Margaret Lucas, Patrick Harkness, Cardoni, A.   +5 more
core   +1 more source

Flexible Dielectric Acoustic Resonator Patch for Tissue Regeneration

Advanced Materials, EarlyView.
A flexible dielectric acoustic resonator patch enables MHz‐range ultrasound generation through resonance amplification without using piezoelectric materials. Conformal integration on a curved substrate allows efficient acoustic delivery to tissue‐mimicking environments.
Donyoung Kang, Byeongseok Ryu, Sujeong Ahn, Junhyub Kim, Myeonghun Jang, Jeong Ho Cho, Won‐Gun Koh, Hyungsuk Lee   +7 more
wiley   +1 more source

Bubble Formation Control: Fabrication of Centimeter‐Sized Tissue‐Like Constructs by Catalase‐Coated Oxygen‐Releasing Hydrogel

Advanced Materials, EarlyView.
Oxygen‐releasing hydrogels are widely used to support cell survival in 3D cultures and to promote wound healing. However, incorporating catalase to convert H2O2 into O2 often generates additional oxygen bubbles, leading to material instability which rarely addressed.
Sukulya Bunuasunthon, Isabel F. Amaral, Ana P. Pêgo, Michiya Matsusaki   +3 more
wiley   +1 more source

Longitudinal vibrations of tall concrete faced rockfill dams in narrow canyons

, 2012
Longitudinal vibrations of concrete-faced rockfill dams may cause significant compressive stresses and joint openings in the slab panels. The behavior of such dams subjected to longitudinal and vertical vibrations is investigated, based on numerical ...
Dakoulas, P.
core   +1 more source

Low frequency damping of metal panels in ambient Air [PDF]

, 2008
Mathematical models of structural dynamics are widely used and applied in many branches of science and engineering and it has been argued that many of the shortfalls with these models are due to the fact that the physics of joint dynamics are not ...
Paul Cunningham (1251771), Aglietti, GS, Walker, S.J.I., Walker, SJI, S.J.I. Walker (7122401), G.S. Aglietti (7122404), Cunningham, P, Cunningham, P.R., Aglietti, G.S.   +8 more
core   +1 more source

Phase Engineering of Atomically Precise Nanoclusters (APNCs) of Gold and Beyond

Advanced Materials, EarlyView.
Engineering the structural phase of materials is of paramount importance for both fundamental research and practical applications. In this Review, we summarize the recent progress in controlling the phases of atomically precise nanoclusters (APNCs) of gold, silver and copper, as well as bimetallic systems. The phase‐enabled material properties of APNCs
Yitong Wang, Avirup Sardar, Weijie Ji, Zhongyu Liu, Rongchao Jin   +4 more
wiley   +1 more source