scholarly journals Development and validation of an ultrasound imaging software for nondestructive evaluation of concrete pavements

2021 ◽  
Vol 14 (5) ◽  
Author(s):  
Henrique Luiz de Lima Seiffert ◽  
José Tadeu Balbo
Keyword(s):  
Nondestructive Evaluation ◽  
Ultrasound Imaging ◽  
Plain Concrete ◽  
Concrete Pavements ◽  
Practical Standpoint ◽  
Synthetic Aperture Focusing ◽  
Processing Techniques ◽  
Synthetic Aperture Focusing Technique ◽  
Development And Validation

ABSTRACT: A Synthetic Aperture Focusing Technique-based ultrasound imaging software was developed and validated in this work. The software development process was discussed in detail. For validation, Jointed Plain Concrete Pavements were imaged with the evaluated software and a software assumed to yield standard images. The quality of the standard and evaluated images were analyzed and compared. The backwalls and dowels were recognizable in the standard and evaluated images. The thickness estimates obtained with each software was the same. The characteristics of objects and artifacts were explained in terms of the technology’s fundamentals and its implementations’ characteristics. The evaluated software resulted, therefore, in images of similar quality to the standard software’s images from a practical standpoint. The herein developed software was then validated for research on nondestructive evaluation of concrete pavements and can be used for testing and development of performance-improving signal and image processing techniques.

SAFT processing for manually acquired ultrasonic measurement data with 3D smartInspect

2019 ◽  
Vol 61 (11) ◽  
pp. 663-669 ◽  
Author(s):  
F Krieg ◽  
J Kirchhof ◽  
S Kodera ◽  
S Lugin ◽  
A Ihlow ◽  
...  
Keyword(s):  
Visual Feedback ◽  
Measurement Data ◽  
Ultrasonic Measurement ◽  
Synthetic Aperture ◽  
Imaging Quality ◽  
Numerical Studies ◽  
Fraunhofer Institute ◽  
Synthetic Aperture Focusing ◽  
Synthetic Aperture Focusing Technique

The architecture and implementation of a system for synthetic aperture focusing technique (SAFT) reconstruction on ultrasonic data acquired using a hand-held device is described. The reconstruction and the measurement process are performed simultaneously, with the goal of providing instantaneous highly focused visual feedback to the engineer. The implementation is based on the 3D smartInspect system that is currently being developed at Fraunhofer Institute for Nondestructive Testing IZFP. This system assists engineers by recording, displaying and protocolling manually acquired data. In this paper, it is shown that it is possible to enhance this system by adding simultaneous SAFT processing on top of the existing functionality. This improves the imaging quality of the system. Possible limitations on the imaging quality are investigated by real-world hardware set-ups using numerical studies.

Overview of Ultrasound Imaging Algorithms Based on Synthetic Aperture Focusing Technique

2013 ◽  
Vol 712-715 ◽  
pp. 2051-2054
Author(s):  
Hong Chun Sun ◽  
Da Long Zhang ◽  
Shao Kun Wu
Keyword(s):  
Ultrasound Imaging ◽  
Three Dimensional ◽  
Synthetic Aperture ◽  
Imaging Technology ◽  
Signal Processing Method ◽  
Ultrasonic Echo ◽  
Synthetic Aperture Focusing ◽  
Imaging Algorithms ◽  
Synthetic Aperture Focusing Technique ◽  
Azimuth Resolution

Synthetic aperture focusing ultrasound imaging technique used signal processing method to analysis ultrasonic echo data. It let the performance of transducer with small apertures be as well as the transducer with large aperture. It can still obtain high azimuth resolution image and form three-dimensional image, when it was operated at lower operating frequency. This paper describes the history and the theory of synthetic aperture focusing ultrasound imaging technology. It also contains the development of the synthetic aperture focusing ultrasound imaging technology in China and at abroad. And lots of excellent synthetic aperture focusing ultrasound imaging algorithms were listed in this paper. We analyzed the deficiencies and problems of the existing ultrasound focusing algorithms. And we made forecast about the development of synthetic aperture technology in nondestructive testing.

Calibration of Performance Models for Jointed Plain Concrete Pavements Using Long-Term Pavement Performance Database

1998 ◽  
Vol 1629 (1) ◽  
pp. 108-116 ◽  
Author(s):  
Marcelo Bustos ◽  
Hernáan E. De Solminihac ◽  
Michael I. Darter ◽  
Andres Caroca ◽  
Juan Pablo Covarrubias
Keyword(s):  
Plain Concrete ◽  
Pavement Performance ◽  
Concrete Pavements ◽  
Performance Models ◽  
Climatic Regions ◽  
Transverse Cracking ◽  
Global Calibration ◽  
Regional Factors

A methodology for calibrating performance models for jointed plain concrete pavements (JPCP) is presented; it is based on statistical analysis of data from the Long-Term Pavement Performance (LTPP) database. The methodology provides calibration factors to pavements in four climatic regions (dry-freeze, dry-nonfreeze, wet-freeze, and wet-nonfreeze) for the JPCP performance models in HDM-4: joint faulting, transverse cracking, joint spalling, and roughness. The procedure allows calculation of global calibration factors, which does not affect significantly the quality of the prediction compared with the quality achieved through the use of regional factors.

18: Measuring Quality-of-Life after Surgery: Development and Validation of the Convalescence and Recovery Evaluation (CARE)

2007 ◽  
Vol 177 (4S) ◽  
pp. 7-7
Author(s):  
Brent K. Hollenbeck ◽  
J. Stuart Wolf ◽  
Rodney L. Dunn ◽  
Martin G. Sanda ◽  
David P. Wood ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Development And Validation
Sign in / Sign up

Export Citation Format

Share Document