Results 111 to 120 of about 209,989 (310)

DYNAMICAL CHARACTERISTICS OF STRUCTURES ON AN ELASTIC GROUND [PDF]

open access: yes, 1966
In this paper the dynamical characteristics of structures on an elastic ground are investigatedby making use of "Ground Compliance" I. E. the transfer function of an elastic halfapace.The amplitude and phase characteristics of the four structural models ...
小堀, 鐸二   +2 more
core  

Seismic scattering signatures of small-scale heterogeneities: examples from the Mount Messenger Formation, New Zealand [PDF]

open access: yes
Heterogeneity that is on a length scale just below that of a seismic wavelength is at the limit of resolution but may still cause significant wave scattering.
Haines, A. J., Hulme, T., Henrys, S. A.
core   +1 more source

Free vibration of a three-layered sandwich beam using the dynamic stiffness method and experiment [PDF]

open access: yes, 2007
In this paper, an accurate dynamic stiffness model for a three-layered sandwich beam of unequal thicknesses is developed and subsequently used to investigate its free vibration characteristics.
Morishima, R.   +4 more
core   +1 more source

Hardness Results on Characteristics for Elastic-Degenerated Strings

open access: yesCoRR
Generalizations of plain strings have been proposed as a compact way to represent a collection of nearly identical sequences or to express uncertainty at specific text positions by enumerating all possibilities. While a plain string stores a character at each of its positions, generalizations consider a set of characters (indeterminate strings), a set ...
Dominik Köppl, Jannik Olbrich
openaire   +2 more sources

Microstructure‐Controlled Crack Propagation and Fracture Resistance in MoSiBTiC Alloy Revealed by Multiscale Extended Finite Element Method Modeling

open access: yesAdvanced Engineering Materials, EarlyView.
A two‐dimensional multiscale finite element analysis framework was established for the first‐generation MoSiBTiC alloy, and the mechanical and fracture‐related parameters of the constituent phases were calibrated through experiments and simulations. The framework provides a basis for analyzing crack propagation behavior in its complex microstructure ...
Junfeng Du   +4 more
wiley   +1 more source

Appraising the suitability of a hybrid piston for internal combustion engines and its fatigue characteristics [PDF]

open access: yes, 2012
This thesis was submitted for the degree of Master of Philosophy and awarded by Brunel University.Automotive engine pistons are not normally expected to be made of plastics or even composites, but before now the latter have been applied to an Over Head ...
Unamka, Ugochukwu Gregory   +1 more
core  

Unparameterized Optimization of the Spring Characteristic of Parallel Elastic Actuators

open access: yesIEEE Robotics and Automation Letters, 2019
In electrically actuated robots most energy losses are due to the heating of the actuators. This energy loss can be greatly reduced with parallel elastic actuators, by optimizing the elastic element such that it delivers most of the required torques.
Linda F. van der Spaa   +2 more
openaire   +5 more sources

Hydrogen‐Assisted Fracture of Iron‐Based Fe–Ni–Al Alloys

open access: yesAdvanced Engineering Materials, EarlyView.
Principal relations and fracture mechanisms of single‐phase and precipitate‐strengthened Fe–Ni–Al alloys subjected to prior electrochemical hydrogen charging are identified. The mechanisms of hydrogen effect on strength and microhardness are discussed, including hydrogen‐induced increase in microhardness and the role of hydrogen in fracture behavior ...
Nataliya Yadzhak   +3 more
wiley   +1 more source

Tobacco price elasticity by socioeconomic characteristics in Ecuador

open access: yesPLOS ONE
Smoking is a worldwide epidemic and increased prices are one of the most cost-effective measures to reduce tobacco consumption. This article aims to estimate the price and income elasticity of cigarettes for different population groups in Ecuador. The National Survey of Urban and Rural Household Income and Expenditures (ENIGHUR) 2011–2012 was used ...
Ana Mena, Guillermo Paraje
openaire   +3 more sources

Fatigue Crack Initiation and Growth in Nanocrystalline Ni at Multiple Length‐Scales

open access: yesAdvanced Engineering Materials, EarlyView.
Overview of miniaturized in situ SEM fatigue setup and resultant fatigue crack growth data for nanocrystalline Ni. The presented study focuses on the analysis of fatigue crack growth rate (FCGR) in focused ion beam‐notched microcantilevers prepared from nanocrystalline (NC) Ni as a model material.
Igor Moravcik   +7 more
wiley   +1 more source

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