Results 21 to 30 of about 71,141 (311)

Feasibility Study on Crack Detection of Pipelines Using Piezoceramic Transducers

International 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, Qingzhao Kong, Timothy Lai, Gangbing Song   +3 more
doaj   +1 more source

Internalizing and externalizing symptoms of crack-cocaine users

Psychologica, 2017
The present study aimed to analyse the psychopathological functioning of crack-cocaine users compared to the general population. It is a quantitative cross-sectional study.
Margareth da Silva Oliveira, Fernanda Cerutti, Fernanda de Almeida Ribeiro, Irani Iracema de Lima Argimon   +3 more
doaj   +1 more source

A specified procedure for distress identification and assessment for urban road surfaces based on PCI [PDF]

, 2017
In this paper, a simplified procedure for the assessment of pavement structural integrity and the level of service for urban road surfaces is presented.
Loprencipe, Giuseppe, PANTUSO ROMERO, Antonio   +1 more
core   +2 more sources

Simulation of ethane steam cracking with severity evaluation

IOP Conference Series: Materials Science and Engineering, 2016
Understanding the influence of operating parameters towards cracking severity is paramount in ensuring optimum operation of an ethylene plant. However, changing the parameters in an actual plant for data collection can be dangerous. Thus, a simulation model for ethane steam cracking furnace is developed using ASPEN Plus for the assessment.
M N Rosli, N Aziz
openaire   +1 more source

Automatic Pavement Crack Detection and Classification Using Multiscale Feature Attention Network

IEEE Access, 2019
Pavement crack detection and characterization is a fundamental part of road intelligent maintenance systems. Due to the high non-uniformity of cracks, topological complexity, and similar noise from crack texture, the challenge arises in this domain with ...
Weidong Song, Guohui Jia, Di Jia, Hong Zhu   +3 more
doaj   +1 more source

An improved analytical dynamic model for rotating blade crack: With application to crack detection indicator analysis

Journal of Low Frequency Noise, Vibration and Active Control, 2021
Rotating blade is one of the most important components for turbomachinery. Blade crack is one of the most common and dangerous failure modes for rotating blade. Therefore, the fault mechanism and feature extraction of blade crack are vital for the safety
Laihao Yang, Meng Ma, Shuming Wu, Xuefeng Chen, Ruqiang Yan, Zhu Mao   +5 more
doaj   +1 more source

Separating the Location and Severity Effects in Frequency-Based Crack Detection Using the Dynamic Stiffness Matrix

Journal of Experimental and Theoretical Analyses
The Dynamic Stiffness Matrix (DSM) of a structure is a frequency-dependent stiffness matrix relating the actions (forces and moments) and displacements (translations and rotations) when the structure vibrates at a given frequency.
Julian De Los Rios, Sinniah Ilanko, Yusuke Mochida, David Kennedy   +3 more
doaj   +1 more source

CrackVision: A Bayesian CNN–Vision Transformer Bagging Ensemble for Enhancing Multiclass Concrete Crack Severity Classification [PDF]

E3S Web of Conferences
This paper presents CrackVision, a bagging ensemble integrating a Bayesian Convolutional Neural Network (BCNN) and Vision Transformer (ViT) for multiclass concrete crack severity classification.
Mandap Jomer R., Sanchez Daniel John Henrick D., Ontanillas Steven Mark B., Magloyuan Neil P.   +3 more
doaj   +1 more source

Damage detection in beams from modal and wavelet analysis using a stationary roving mass and noise estimation [PDF]

, 2018
This paper uses the Continuous Wavelet Transform Analysis on mode shapes for damage identification. The wavelet analysis is applied to the difference in the mode shapes between a healthy and a damaged state.
Andreaus, Bendat, Cao, Fan, García, Gentile, Jiang, Katunin, Katunin, Katunin, Katunin, Limongelli, Mallat, Montanari, Ovanesova, Panopoulou, Rajendran, Ren, Rucka, Rucka, Shao, Solís, Solís, Strang, Taha, Ulriksen, Unger, Xu, Xu, Yang, Yi, Zhong, Zhong, Zhong   +33 more
core   +1 more source

An Integrated Framework for Pavement Crack Segmentation and Severity Estimation

Buildings
Pavement maintenance programs rely on timely and accurate crack assessment to preserve roadway quality and reduce long-term rehabilitation costs. Manual inspection remains the prevailing practice, yet it is slow, subjective, and exposes crews to safety ...
Osama Alsharayah, Dmitry Manasreh, Munir D. Nazzal   +2 more
doaj   +1 more source