Results 21 to 30 of about 4,652,142 (278)

Seismic physics-based characterization of permafrost sites using surface waves [PDF]

open access: yesThe Cryosphere, 2022
The adverse effects of climate warming on the built environment in (sub-)arctic regions are unprecedented and accelerating. The planning and design of climate-resilient northern infrastructure, as well as predicting deterioration of permafrost from ...
H. Liu   +3 more
doaj   +1 more source

Inspection of Multilayer Pipes Using Longitudinal Guided Waves [PDF]

open access: yesEPJ Web of Conferences
Currently, Multilayer pipes are increasingly preferred over single-layer alternatives due to their enhanced mechanical and chemical properties. This research establishes governing equations for longitudinal guided wave propagation in multilayered pipes ...
Drissi Azdine   +2 more
doaj   +1 more source

First Principle Study of the Mechanical Properties and Phonon Dispersion of the Iron Pnictide Compound EuFe2As2

open access: yesThe Scientific World Journal, 2020
We present results on the first principle study of the elastic constants and the phonon dispersion of EuFe2As2 at zero pressure. The ground-state energy calculations were performed within Density Functional Theory (DFT) and the generalized gradient ...
N. K. Omboga   +2 more
doaj   +1 more source

Characterizing Mechanical Properties of Layered Engineered Wood Using Guided Waves and Genetic Algorithm

open access: yesSensors, 2023
This study develops a framework for determining the material parameters of layered engineered wood in a nondestructive manner. The motivation lies in enhancing nondestructive evaluation (NDE) and quality assurance (QA) for engineered wood or mass timber,
Nemish Atreya, Pai Wang, Xuan Zhu
doaj   +1 more source

Splitting of waves in rotor-in-rotor nonlocal metamaterials by internal rotor coupling

open access: yesMaterials & Design, 2022
Mechanical metamaterials can be used to control wave propagation because they are flexibly adjustable. In this paper, a one-dimensional rotor-in-rotor metamaterial with internal rotor coupling is proposed.
Leiyu Yang   +3 more
doaj   +1 more source

Numerical and Experimental Investigation of Guided Wave Propagation in a Multi-Wire Cable

open access: yesApplied Sciences, 2019
Ultrasonic guided waves (UGWs) have attracted attention in the nondestructive testing and structural health monitoring (SHM) of multi-wire cables. They offer such advantages as a single measurement, wide coverage of the acoustic field, and long-range ...
Pengfei Zhang   +3 more
doaj   +1 more source

NUMERICAL SIMULATION OF STRESS WAVE PROPAGATION IN SAP CONCRETE [PDF]

open access: yesCivil Engineering Journal, 2018
The SAP (Super Absorbent Polymers) concrete is a new kind of concrete materials with uniformly distributed spherical pores with diameter of millimetre-size.
Zhenqun Sang   +4 more
doaj   +1 more source

Mechanical balance laws for fully nonlinear and weakly dispersive water waves [PDF]

open access: yesPhysica D: Nonlinear Phenomena, 2016
The Serre-Green-Naghdi system is a coupled, fully nonlinear system of dispersive evolution equations which approximates the full water wave problem. The system is an extension of the well known shallow-water system to the situation where the waves are long, but not so long that dispersive effects can be neglected.
Henrik Kalisch   +2 more
openaire   +2 more sources

2011-2013 Biennial Report [PDF]

open access: yes
Oregon Wave Energy Trust (OWET) is a nonprofit public-private partnership funded by the Oregon Innovation Council. Its mission is to support the responsible development of wave energy in Oregon. OWET emphasizes an inclusive, collaborative model to ensure
Oregon Wave Energy Trust
core   +5 more sources

Petrophysical properties and their influencing factors of carbonates in the fourth member of Sinian Dengying Formation, Sichuan Basin, SW China

open access: yesPetroleum Exploration and Development, 2023
Based on the measurements of petrological, petrophysical and elastic properties of the samples of different sedimentary facies in the fourth member of Sinian Dengying Formation (Deng 4 Member) in the Sichuan Basin, the diagenetic processes of reservoirs ...
Jiaqing WANG   +4 more
doaj   +1 more source

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