Results 41 to 50 of about 194,540 (292)

An efficient methodology to estimate probabilistic seismic damage curves [PDF]

open access: yes, 2019
The incremental dynamic analysis (IDA) is a powerful methodology that can be easily extended for calculating probabilistic seismic damage curves. These curves are metadata to assess the seismic risk of structures.
Barbat Barbat, Horia Alejandro   +3 more
core   +2 more sources

Hopfield Neural Networks for Online Constrained Parameter Estimation With Time‐Varying Dynamics and Disturbances

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView.
This paper proposes two projector‐based Hopfield neural network (HNN) estimators for online, constrained parameter estimation under time‐varying data, additive disturbances, and slowly drifting physical parameters. The first is a constraint‐aware HNN that enforces linear equalities and inequalities (via slack neurons) and continuously tracks the ...
Miguel Pedro Silva
wiley   +1 more source

Investigation of Fatigue Assessment Method for Glass Fiber Reinforced Composite Hull Structures Based on Stiffness Degradation

open access: yesJournal of Marine Science and Engineering
A study was conducted on the fatigue assessment method for composite ship structures under complex marine environments, and a fatigue assessment method based on the principle of stiffness degradation was proposed.
Kaiyan Li   +4 more
doaj   +1 more source

Experimental study on the tension-tension fatigue behaviour of glass/epoxy quasi-isotropic composites

open access: yesJournal of King Saud University: Engineering Sciences, 2020
This study investigates the tension-tension fatigue behaviour of glass/epoxy quasi-isotropic laminates. Constant amplitude tension-tension fatigue tests were performed at different stress level at a stress ratio, R = 0.1 and at a frequency of 3 Hz.
N.H. Padmaraj   +2 more
doaj   +1 more source

Matrix cracking in polymeric composites laminates: Modelling and experiments [PDF]

open access: yes, 2007
Composites ability to retain functionality in the presence of damage is a crucial safety and economic issue. Generally the first damage mode in composite laminates is matrix cracking, which affects the mechanical properties of the structure long before ...
Galiotis, C.   +3 more
core   +4 more sources

Enhancing Corrosion Resistance and Mechanical Strength of 3D‐Printed Iron Polylactic Acid for Marine Applications via Laser Surface Texturing

open access: yesAdvanced Engineering Materials, EarlyView.
Laser surface texturing significantly improves the corrosion resistance and mechanical strength of 3D‐printed iron polylactic acid (Ir‐PLA) for marine applications. Optimal laser parameters reduce corrosion by 80% and enhance tensile strength by 25% and ductility by 15%.
Mohammad Rezayat   +6 more
wiley   +1 more source

Damage indicators for unreinforced masonry building walls subjected to seismic actions [PDF]

open access: yesGrađevinski Materijali i Konstrukcije, 2017
Energy dissipation and stiffness degradation are important seismic performance indicators within the numerical modelling of structures, and in this case particularly of masonry.
Ademović Naida, Oliveira Daniel V.
doaj   +1 more source

Numerical model to account for the influence of infill masonry on the RC structures behaviour [PDF]

open access: yes, 2005
It is a common misconception considers that masonry infill walls in structural RC buildings can only increase the overall lateral load capacity, and, therefore, must always be considered beneficial to seismic performance.
Costa, A., Rodrigues, H., Varum, H.
core   +1 more source

Is Young's Modulus a Critical Coating Property Determining Fouling‐Release Performance of Marine Coatings?

open access: yesAdvanced Engineering Materials, EarlyView.
The release of foulers from protective marine coatings is determined by several interrelated material properties, including the strength of Young's modulus, the flexibility of chain segments, the surface free energy, and the magnitude of hydrodynamic stress.
Johann C. Schaal   +2 more
wiley   +1 more source

An Overview of Progressive Collapse Behavior of Steel Beam-to-Column Connections

open access: yesApplied Sciences, 2020
Local failure of one or more components due to abnormal loading can induce the progressive collapse of a building structure. In this study, by the aid of available full-scale test results on double-span systems subjected to the middle column loss ...
Iman Faridmehr   +1 more
doaj   +1 more source

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