Results 41 to 50 of about 64,286 (293)

Comparative Study of Two Optimization Methods for Structural Damage Severity Estimation

Electronic Journal of Structural Engineering, 2012
This paper presents comparative assessment of the performance characteristics of two optimization algorithms, namely a deterministic nonlinear least squares (NLS) optimization and a stochastic adaptive simulated (ASA) annealing global optimization ...
W.L. Bayissa, N. Haritos
doaj   +1 more source

Statistical damage identification method based on dynamic response sensitivity

Journal of Low Frequency Noise, Vibration and Active Control, 2020
The traditional deterministic damage detection method is based on the assumption that the measured data and the finite element model are accurate. However, in real situation, there are many uncertainties in the damage identification procedure such as the
Ling Mao, Shun Weng, Shu-Jin Li, Hong-Ping Zhu, Yan-Hua Sun   +4 more
doaj   +1 more source

Using a moving load to simultaneously detect location and severity of damage in a simply supported beam [PDF]

Journal of Vibration and Control, 2019
This paper demonstrates the feasibility of simultaneously identifying both the location and severity of structural damage in a beam by using two independent moving load experiments. First, a simple but sufficiently accurate single degree of freedom model is presented to simulate the structure efficiently over a wide range of relevant inputs.
Mohsen Mousavi, Damien Holloway, J C Olivier   +2 more
openaire   +1 more source

Thermoreflectance Detection of Point Defects Resulting from Focused Ion Beam Milling

Advanced Engineering Materials, EarlyView.
Focused ion beam (FIB) milling is a common tool for nanoscale material processing, however irradiation damage, redeposition, and contamination can occur. We use several characterization tools to show FIB‐induced effects beyond 1 mm from the milled area.
Thomas W. Pfeifer, Eric R. Hoglund, Anton V. Ievlev, Patrick E. Hopkins   +3 more
wiley   +1 more source

FE Model Updating on an In-Service Self-Anchored Suspension Bridge with Extra-Width Using Hybrid Method

Applied Sciences, 2017
Nowadays, many more bridges with extra-width have been needed for vehicle throughput. In order to obtain a precise finite element (FE) model of those complex bridge structures, the practical hybrid updating method by integration of Gaussian mutation ...
Zhiyuan Xia, Aiqun Li, Jianhui Li, Maojun Duan   +3 more
doaj   +1 more source

EBSD Study of Creep‐Induced Lattice Misorientation in MgO‐Particle‐Reinforced Austenitic Steel Composites

Advanced Engineering Materials, EarlyView.
Creep experiments at 900°C on coarse‐grained steel‐ceramic composites containing recycled magnesia reveal that higher ceramic volume fractions significantly enhance the creep resistance. Detailed EBSD investigations identify subgrain formation in the steel matrix as the dominant deformation mechanism.
Moritz Müller, Amaya Compart, Mahnaz Mehdizadehlima, Serhii Yaroshevskyi, Christos G. Aneziris, Horst Biermann, Anja Weidner   +6 more
wiley   +1 more source

Handbook of Establishing and Maintaining Oxygen‐Free Atmospheres

Advanced Engineering Materials, EarlyView.
This study presents a practical framework for creating oxygen‐free atmospheres at ambient pressure using silane‐doped inert gases. The results show that ultra‐low oxygen levels and strongly reduced water content can be achieved through controlled silane dosing, drying systems, and sensor monitoring.
Sascha Jan Zimmermann, René Gustus, Lienhard Wegewitz, Wolfgang Maus‐Friedrichs   +3 more
wiley   +1 more source

Effect of road quality in structural health monitoring under operational conditions [PDF]

, 2015
The effect of unevenness in a bridge deck for the purpose of Structural Health Monitoring (SHM) under operational conditions is studied in this paper. The moving vehicle is modelled as a single degree of freedom system traversing the damaged beam at a ...
Jaksic, Vesna, O'Connor, Alan J., Pakrashi, Vikram   +2 more
core  

Damage identification of simply-supported beams based on SD value method

Journal of Physics: Conference Series
Abstract Combining the relationships among the displacement mode, rotation mode, and curvature mode, this study proposes a structural curvature variance ratio (SD) method that can simplify the calculation and reduce the damage recognition error.
Yiming Li, Qiyang Liu, Jiangwei Geng, Yang Wang   +3 more
openaire   +1 more source

Oxide‐Free Titanium Coatings by Wire Arc Spraying in a Silane‐Doped Inert Atmosphere

Advanced Engineering Materials, EarlyView.
A silane‐doped argon atmosphere enables the production of oxide‐free titanium coatings via twin‐wire arc spraying at ambient pressure. This innovative approach eliminates residual oxygen, creating process conditions that prevent oxidation and nitride formation.
Manuel Rodriguez Diaz, Maik Szafarska, René Gustus, Kai Möhwald, Hans Jürgen Maier   +4 more
wiley   +1 more source