Results 11 to 20 of about 46,341 (265)

Estimation of the severity of damage produced by a transverse crack

open access: yesStudia Universitatis Babeș-Bolyai Engineering, 2020
This paper presents a method to find the severity of a crack for cantilever beams that can be used to estimate the frequency drop due to the crack. The severity is found for the crack located at the location where the biggest curvature (or bending moment) is achieved.
Marius-Vasile POP   +4 more
openaire   +1 more source

Automatic Multiclass Instance Segmentation of Concrete Damage Using Deep Learning Model

open access: yesIEEE Access, 2021
Concrete is one of the primary and most commonly used materials for the construction of buildings, roads, bridges, and dams. But it may lose its strength with age, moisture content, or due to other factors. As a result, little damage (crack and spall) to
Prashant Kumar   +2 more
doaj   +1 more source

Determining the Severity of Open and Closed Cracks Using the Strain Energy Loss and the Hill-Climbing Method

open access: yesApplied Sciences, 2022
Evaluating the integrity of structures is an important issue in engineering applications. The use of vibration-based techniques has become a common approach to assessing cracks, which are the most frequently occurring damage in structures. When involving
Cristian Tufisi   +6 more
doaj   +1 more source

LDA-Based Model for Defect Management in Residential Buildings [PDF]

open access: yes, 2019
This study systematically analyzes various defect patterns that occur during the warranty period of residential buildings using the loss distribution approach (LDA).
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core   +1 more source

Multiple Cracks Detection in Pipeline Using Damage Index Matrix Based on Piezoceramic Transducer-Enabled Stress Wave Propagation

open access: yesSensors, 2017
Cracks in oil and gas pipelines cause leakage which results in property damage, environmental pollution, and even personal injury or loss of lives. In this paper, an active-sensing approach was conducted to identify the crack damage in pipeline structure
Guofeng Du   +3 more
doaj   +1 more source

Pitting damage levels estimation for planetary gear sets based on model simulation and grey relational analysis [PDF]

open access: yes, 2011
The planetary gearbox is a critical mechanism in helicopter transmission systems. Tooth failures in planetary gear sets will cause great risk to helicopter operations.
Cheng, Zhe   +3 more
core   +1 more source

Fatigue damage evaluation of 316LN stainless steel using acoustic emission monitoring

open access: yes工程科学学报, 2018
The initiation and growth of fatigue cracks usually lead to serious fatigue failure of steel structures such as pressure vessels and pipelines. Therefore, for the safety and reliability of engineering structures, monitoring the fatigue crack growth and ...
ZHANG Jin   +3 more
doaj   +1 more source

Unique determination of a single crack in a uniform simply supported beam in bending vibration [PDF]

open access: yes, 2016
In this paper we consider one of the basic inverse problems in damage detection based on natural frequency data, namely the identification of a single open crack in a uniform simply supported beam from measurement of the first and the second natural ...
Fernandez Saez, J   +3 more
core   +1 more source

Feasibility Study on Crack Detection of Pipelines Using Piezoceramic Transducers

open access: yesInternational Journal of Distributed Sensor Networks, 2013
Damage detection of pipelines is of great significance in terms of safety in the oil and gas industry. Currently, lead zirconate titanates (PZTs) are the most popular piezoceramic materials and show great potential in the applications of structural ...
Guofeng Du   +3 more
doaj   +1 more source

A Machine Learning Approach to Model Interdependencies between Dynamic Response and Crack Propagation

open access: yesSensors, 2020
Accurate damage detection in engineering structures is a critical part of structural health monitoring. A variety of non-destructive inspection methods has been employed to detect the presence and severity of the damage.
Thomas Fleet   +5 more
doaj   +1 more source

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