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Cross-correlation-based algorithm for absolute stress evaluation in steel members using the longitudinal critically refracted wave

Zuohua Li, Jingbo He, Jun Teng, Ying Wang
2018 International Journal of Distributed Sensor Networks  
In this study, a cross-correlation-based algorithm is presented for stress evaluation using the longitudinal critically refracted wave.  ...  On this basis, the proposed cross-correlation-based algorithm is used to evaluate the stress of a steel member.  ...  Funding The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This work was financially supported by the National The authors  ... 
doi:10.1177/1550147718803312 fatcat:4excrkbrfvhdnaaj6aglyr5sk4

Recent Advancements in Non-Destructive Testing Techniques for Structural Health Monitoring

Patryk Kot, Magomed Muradov, Michaela Gkantou, George S. Kamaris, Khalid Hashim, David Yeboah
2021 Applied Sciences  
This study mainly focuses on the scope and recent advancements of the Non-destructive Testing (NDT) application for SHM of concrete, masonry, timber and steel structures.  ...  Currently, research has been conducted in order to develop non-destructive techniques for SHM to extend the lifespan of monitored structures.  ...  Van Der Kooi and Hoult [52] used DOFSs to monitor strain in the members of the steel model truss.  ... 
doi:10.3390/app11062750 fatcat:u2j7eiekprfwzp3yysgleuop6i


Ayman Khalil, Khaled Heiza, Omar El Nawawy
2016 The International Conference on Civil and Architecture Engineering  
Traditionally, modern nondestructive evaluation techniques have been utilized to test bridges. Numerous nondestructive test procedures are available for use on bridge components.  ...  Visual inspection of structural elements in bridges is the most basic approach to nondestructive evaluation.  ...  IMPACT ECHO METHOD The impact-echo method is based on the use of transient stress (sound) waves for nondestructive evaluation of structures, particularly reinforced concrete structures.  ... 
doi:10.21608/iccae.2016.43763 fatcat:2qkbpev7rrdgdblxnls2x2rkmy

Review: optical fiber sensors for civil engineering applications

Christopher K. Y. Leung, Kai Tai Wan, Daniele Inaudi, Xiaoyi Bao, Wolfgang Habel, Zhi Zhou, Jinping Ou, Masoud Ghandehari, Hwai Chung Wu, Michio Imai
2013 Materials and Structures  
It is believed that the State-ofthe-Art review is helpful to engineers considering the use of OFS in their projects, and can facilitate the wider application of OFS technologies in construction industry  ...  In this paper, which is resulting from the work of the RILEM technical committee "Optical fiber sensors for civil engineering applications", different kinds of sensing techniques, including change of light  ...  The EFPI strain wave sensors detected the wave propagation from a low strain impact clearly and correlated well to the RSG signals.  ... 
doi:10.1617/s11527-013-0201-7 fatcat:wv2vanhqdjfejfip3xjbysee4u

Development of a Bridge Weigh-in-Motion Sensor: Performance Comparison Using Fiber Optic and Electric Resistance Strain Sensor Systems

Myra Lydon, Susan E. Taylor, Desmond Robinson, Paul Callender, Ciaran Doherty, Simon K. T. Grattan, Eugene J. OBrien
2014 IEEE Sensors Journal  
The algorithm to process the data is based on the assumption that when a moving load is applied to a bridge this will cause the longitudinal members to bend in proportion to the product of the magnitude  ...  In the case of B-WIM, these positions are based on peak stress areas established using finite element analysis (FEA).  ... 
doi:10.1109/jsen.2014.2332874 fatcat:twsn4nhb7bgkxabh3vzxbtj6qa

Microseismic Monitoring Developments in Hydraulic Fracture Stimulation [chapter]

Mirko van der Baan, David Eaton, Maurice Dusseault
2013 Effective and Sustainable Hydraulic Fracturing  
Both hydraulic fracturing and steam injection create changes in local pore pressures and in situ stresses and thereby brittle failure in intact rock plus additional slip/shearing in naturally fractured  ...  The last decade has seen a significantly increased interest in microseismic monitoring by the hydrocarbon industry due to the recent surge in unconventional resources such as shale-gas and heavy-oil plays  ...  Acknowledgements The first two authors would like to thank the sponsors of the Microseismic Industry Consortium for financial support.  ... 
doi:10.5772/56444 fatcat:tzc4jj25pjbsnhsbdewzuwuxki

A Review of Recent Distributed Optical Fiber Sensors Applications for Civil Engineering Structural Health Monitoring

Mattia Francesco Bado, Joan R Casas
2021 Sensors  
The current work is structured in a manner that allows for the single consultation of any specific DOFS application field, i.e., laboratory experimentation, the built environment (bridges, buildings, roads  ...  Beforehand, a brief section was constructed around the recent progress on the study of the strain transfer mechanisms occurring in the multi-layered sensing system inherent to any DOFS deployment (different  ...  In order to improve the accuracy of the disturbing event recognition, the authors suggested the use of the Wigner bispectrum analysis combined with an extreme gradient boosting tree algorithm.  ... 
doi:10.3390/s21051818 pmid:33807792 pmcid:PMC7962066 fatcat:e4i6x7fxo5hcbjhzqfviywm2kq

Table of Contents

2016 Australian Journal of Primary Health  
Flow is characterized in terms of coherent vortex structures, Reynolds stress variation, turbulent cross-correlations and PDF distributions.  ...  This research specifically focused on students' understand of normal stress, shear stress, normal strain, and shear strain in pure axially loaded members (columns) and pure bending members (beams).  ... 
doi:10.1071/pyv22n4toc fatcat:hrwhnxdpjreslhuwi7y4edqmo4

A coupled bispectral, temporal and spatial coherence function of the pressure field, scattered from a moving sea surface

Christian Bjerrum‐Niese, Leif Bjo/rno/
1995 Journal of the Acoustical Society of America  
The international activities in ISO/TC 43 Acoustics, and IEC/TC 29 Electro-acoustics, will also be discussed. The chairs of the respective U.S. Technical Advisory Groups for ISO/TC 43 (P. D.  ...  The Chairs of the U.S. Technical Advisory Groups for ISO/TC 43 (P. D. Schomer), IEC/TC 29 (V. Nedzelnitsky), and ISO/'rc 108/SC4 (H.  ...  The speed of sound in the fluid corresponded to the longitudinal velocity for steel and exceeded the speed for the outer fluid (water).  ... 
doi:10.1121/1.414267 fatcat:gtdrkztuvfbova3a4rdj2f7umu

Noninvasive microtomographic inspection of rough surfaces by active triangulation

Manuel F. M. Costa, Armando Albertazzi, Jr.
2001 Laser Metrology for Precision Measurement and Inspection in Industry  
quantify the amount of residual stresses in each material layer The residual stresses profile is then determined for every 0 05 mm A controlled experiment using a bent plate is used to experimentally evaluate  ...  In this technique, the object surface model is generated based on the weights and control points. These parameters are deduced by means of the genetic algorithms with simulated cross over operator.  ...  Goal: For the participant to acquire basic notions of graphic programming language, in order to solve problems through software.  ... 
doi:10.1117/12.439209 fatcat:kc3xahntybhg5cyygebalmq7qa

Multimodal Ultrasonic Imaging for Breast Cancer Detection

Jorge Camacho, Luis Medina, Jorge F. Cruza, José M. Moreno, Carlos Fritsch
2012 Archives of Acoustics  
(AE) measurements in determining the critical stresses during four-point bending of mortar beams.  ...  In spite of their advantages, these factors have precluded the use of ultrasound for screening. This work approaches the ultrasound-based early detection of breast cancer with a different concept.  ...  Acknowledgments The author gratefully acknowledges ideas and constructive criticism offered by Prof. Dr. U. Jekosch, Dresden and Dr. R.-D. Dominicus, Ratingen.  ... 
doi:10.2478/v10168-012-0033-4 fatcat:fhhbdferdfaqxcbedyoljfvtxi

A design methodology for 2D sparse NDE arrays using an efficient implementation of refracted-ray TFM

Jerzy Dziewierz, Timothy Lardner, Anthony Gachagan
2013 2013 IEEE International Ultrasonics Symposium (IUS)  
These changes in collagen microstructure were produced using both ultrasound standing wave fields and traveling wave fields.  ...  Recent advances in the field of tissue engineering include the engineering of skin, cartilage, and bladder, all of which are relatively thin tissues that can rely on diffusion for the delivery of oxygen  ...  The authors acknowledge the ANR and DGA for their support under the project Metactif, grant ANR-11-ASTR-015.  ... 
doi:10.1109/ultsym.2013.0035 fatcat:th5znfh7y5bklfdbmhb4u6iq2i

Relevance of time‐varying properties of the first formant frequency in vowel representation

Maria‐Gabriella Di Benedetto
1985 Journal of the Acoustical Society of America  
rules, based on frequency of occurrence, is critical.  ...  In p•rticular, "slow" response has a critical effee• when trading ratios of 4 or 5 dB are used.  ...  The subject's performance is evaluated by comparing F2 curves of the produced vowels with those of the targets using cross-correlation and coherence techniques.  ... 
doi:10.1121/1.2023018 fatcat:3lbckbce2rglzj7zx3fp4nhiui

Theoretical and experimental investigation of the insertion loss of a dissipative muffler

Christian Pommer, Viggo Tarnow
1986 Journal of the Acoustical Society of America  
Thus the accurate computation of eigenray quantities can be used to evaluate broadband cross-correlation For benchmark purposes, one must integrate the remainder over wavenumbers of interest in order  ...  Based on the results of these measurements, the critical radius was calculated for different types of speakers in various areas.  ...  Our measure similarity is Cm, x, the maximum of the absolute value of the cross-correlation function of two time series, and Cma x has a strong dependence on R, g, and the experimental geometry; it has  ... 
doi:10.1121/1.2024087 fatcat:tcee6inawvhubc6ftuk2ffhyce

Temporal integration of loudness as a function of level

Mary Florentine, So/ren Buus, Torben Poulsen
1995 Journal of the Acoustical Society of America  
The method was designed to be used in Monte-Carlo studies of the effects of internal waves.  ...  The results are in good agreement with the PE for 1000-kin propagation through internal waves and for 3000-km mildly varying ocean environments.  ...  Thus reaching this fourth angle is too much costly in deformation amplitude and thus poorly efficient. 5pSC24. Does the perceptual magnet effect hold for the [•] category?  ... 
doi:10.1121/1.411567 fatcat:h52442zdrnc6zmr4ephlixbspu
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