Each chapter contains a specific case study with a theoretical part but also presents experimental results. Georgiou encyclopedia of life support systems eolss difficult to detect by conventional methods. Nondestructive testing is a key tool for quality control, safety and reliability. Application examples are presented including fusion of in service acoustics emission and automated ut testing for corrosion mapping as applied on spheres. P211 do not spray on an open flame or other ignition source. Data fusion is a rapidly developing technology which involves the combination of information supplied by several ndt nondestructive testing sensors to provide a more complete and understandable picture of structural integrity. Intelligent monitoring from sgs to safely extend the life of your asset 5step process for structural health monitoring the simple fivestep process combines results from inspection data and monitoring data which enables owners to better manage critical maintenance investment. Its stateoftheart inspection fleet provides the entire inline inspection service spectrum for onshore and offshore pipelines worldwide.
Eddy current and thermographic images were used as input files to the data fusion centre in which the data fusion process took place. Ndt data gathered from modern onstream techniques, in a user friendly form that will permit data fusion and structure visualization, is discussed and software based solution is presented. Several ndt data fusion processes were applied to perform fusion of eddy current and thermographic images at the pixel level. Pdf ndt data fusion for evaluating concrete structures. The range of capabilities at fraunhofer ikts goes far beyond that of a classic provider of ndt testing services. To achieve this goal, the potential of data fusion in structural damage detection, identi.
Guidebook for the fabrication of nondestructive testing. The use of nondestructive testing methods for the condition. Eddy current and thermographic images were used as input files to the data fusion centre in which the data fusion. In industrial installations, the inspection of nonplanar surfaces requires that ndt probes passe on whole surface, while the autonomous robot navigates over an unknown environment.
Product identifier product identity ndt peraction alternate names ndt peraction 1. It combines information from multi sources, reducing signal uncertainty and improving the overall performance of the testing. Ndt data fusion for evaluating concrete structures. With the publication of the book applications of ndt data fusion 3, it appears that data fusion techniques are becoming more widespread in the nde. Research work carried out in the area of ndt and shm non.
Ndt global is a leading supplier of ultrasonic pipeline inspection and data analysis. This article is about data fusion and its potential applications in ndt. Each chapter contains a specific case study with a theoretical part but also presents experimental results from a practical point of view. To achieve this, we integrate in the fusion process the correlation laws between the ndt measurements, socalled ndps. Request pdf 2d and 3dvisualisation of ndtdata using data fusion technique nondestructive testing ndt of concrete structures plays an increasing role in civil engineering. Data fusion can be used to integrate the results from different devices in a synergistic way by utilizing the strengths of each method while minimizing the weaknesses. Data fusion literature defines different levels at which fusion may take place. Data fusion for automated nondestructive inspection. Data fusion approaches for structural health monitoring and. Wallace lai delivered a talk in the workshop on nondestructive damage assessment and environmental measurement m ethods in germany on 1117 june 2015, a group of 22 engineers from different parts of the world attended a workshop on nondestructive damage assessment and environmental measurement methods in berlin. Nondestructive testing ndt systems can generate incomplete, incorrect or conflicting. Safety data sheet bestwelds ndt standard developer 28 p201 obtain special instructions before use. The proposed approach uses a submap indexing system to achieve operation in arbitrarilysized environments. P202 do not handle until all safety precautions have been read and understood.
Research work is done at csirserc to study the effectiveness of various advanced ndt methods in evaluating different features in rcc and psc structures and also on the data fusion techniques. It is generally accepted that hp is susceptible to environmental factors caused by saltrelated deterioration, such as different moisture and chloride gradients. The defects and ndt methods discussed are summarized in tables for each manufacturing process. Nondestructive testing of materials and structures oral.
The data fusion of demand and response will create a platform for proactive maintenance procedures, design and model verification, and load development guidelines for future renewable energy installations on estuarine bridge structures. The full range of services includes geometry and deformation inspection, metal loss and crack inspection, defect. Ndt careers video watch this streaming video describing the field of ndt. Using the normal distributions transform ndt, a sparse gaussian mixture model, for representation of 3d range scan data, we propose a frametomodel registration and data fusion algorithm. Ostachowicz1,2 corresponding author 1 institute of fluid flow machinery, polish academy of science 14 fiszera st. One of the critical technological areas where great strides have been made is the area of data fusion or data management. P210 keep away from heat, sparks, open flames or hot surfaces. The condition monitoring process the simple fivestep process combines results from inspection data and. Outdoor environment perception for autonomous vehicles using deep learning.
This latter version included the development work carried out by the international committee for non destructive testing icndt and many. Abstractapplying contemporary data fusion techniques, the multimodal nondestructive testing ndt data sets can be combined to obtain more reliable results. Gros dut, bsc hon, msc, phd, in ndt data fusion, 1997. Fusion techniques allow reinforcing redundant evidence and integrating complementary information to achieve a higher degree of certainty. The data fusion operation was performed using feature based inference techniques as summarised in fig. Data fusion allows for logical combining and filtering of information to obtain a. The first refers to combining raw amplitudes, the second to extracting compatible features and combining these, and the last, the highest level, relates to combining the decisions reached by analysing. Implementation of data fusion techniques in nondestructive. However, for both methods, the probability of detection is strongly depthdependent and each method suffers from an almost blind region at a specific depth. Within this framework, the paper demonstrates the way the ndt data are fused and how this process helps towards evaluation of equipment integrity.
The techniques can also be utilized to detect, characterize, or measure the presence of damage mechanisms e. Moreover, compared with manual ultrasonic testing ut, for example. Results from the fusion of images from multiple nondestructive testing ndt. Ndt sensor fusion january 2016 bristol utsg 2 abstract the european road network ern is undoubtedly one of the most important land infrastructures in the eu. Wallace lai delivered a talk in the workshop on non. In other words, multisensor inspection differentiates. A better knowledge of ndt methods reliability, based on the detectable discontinuity types and characteristics, would help to increase the detection capability of critical flaws. Nondestructive testing ndt of concrete structures plays an increasing role in civil engineering. Dec 20, 2018 nondestructive testing is a key tool for quality control, safety and reliability. Training guidelines in nondestructive testing techniques. Consequently, training guidelines in nondestructive testing were issued in 1987 as iaeatecdoc407. Ground penetrating radar gpr and active thermography are well known nondestructive testing ndt methods for structural visualization and defect detection in concrete. Normal distributions transform occupancy map fusion. This publication concentrates on ndt data fusion for industrial applications.
Experimenting with pixellevel ndt data fusion techniques. Application of data fusion in nondestructive testing ndt. Different probability approaches to ndt data fusion were studied and their efficiency in combining information was assessed using statistical theories such as probability of detection 21 and receiver operating characteristic curves. Halfcell potential mapping hp is the most popular nondestructive testing method ndt for locating corrosion damage in concrete. The corresponding methodology involves automated processing of the individual sensor data. Ndt data fusion for the enhancement of defect visualization. Ultrasonic in line inspection company pipeline integrity. Guidebook for the fabrication of nondestructive testing ndt. Ndt sensors are in principle sensitive to the same class of defects, for example surface cracks in a certain parameter range with regards to their position, size and orientation. Todays ndt technology has advanced beyond its traditional role as a discontinuity detection technology. Data fusion process an overview sciencedirect topics.
Ndt data fusion is a fastgrowing signal processing technique. Proceedings of 16th international conference on information fusion, istanbul, turkey, 912 july 20. The iaea promotes the use of nondestructive testing technology to maintain the stringent quality control standards for the safe operation of nuclear and other industrial installations. Practical applications new ndt techniques on composite material in the aerospace industry p. This text is the first to be devoted exclusively to the concept of multisensor integration and data. Ndt sensor data acquired during a road survey decision level sensor fusion following data acquisition, the sensor data are exported into the rpb healtec postprocessing software for analysis. The use of nondestructive testing methods can help reduce the backlog of deficient bridges in two ways. It presents a broad selection of studies demonstrating that multisensor ndt is capable of combining complementary data, enhancing signal to noise ratio snr and performing more accurate defect detection. Consisting of a wide variety of types of roads and motorways, it is and will remain for the foreseeable future a crucial artery for europe. This paper presents a novel approach to environment mapping prediction with focus on autonomous climbing robot to ndt nondestructive technique inspection. Iii nondestructive testing and evaluation of metals g. Citescore values are based on citation counts in a given year e. We propose a new fusion strategy that combines spatially scattered detection locations to improve the.
Intelligent environment recognition and prediction for ndt. Pdf simultaneous estimation of porosity rate and water saturation is studied for undamaged concrete. Data fusion techniques particularly play a significant role in the digital twin framework. Damage monitoring is achieved by the use of a hybrid nondestructive testing system relying on the. Overview of nondestructive testing ndt inspectioneering. This publication concentrates on ndt data fusion for industrial applications and highlights progress and applications in the field of data fusion in areas ranging from materials testing in the aerospace industry to medical applications. The traditional strength of the institute handling noisy signals is reflected at the hardware level by adapted sensors and inhouse electronics with excellent signaltonoise ratios as well as by an inhouse software library and use of stateofthe art machine.
In this report the data fusion concept is described. The data platform powered by savi technology can handle and integrate all types of data, irrespective of the source, and generate highvalue analytics to be integrated in the monitoring report. The book should be considered more as a pragmatic introduction to the applications of ndt data fusion rather than a. The realtime digital technology makes the ndt results. At present there are several acoustic and electromagnetic methods, which cover a large area of.
A revised and enlarged version was issued as iaeatecdoc628 in 1991, both in spanish and english. Nondestructive evaluation nde, also termed nondestructive testing, is a field of. We propose a new fusion strategy that combines spatially scattered detection locations to improve. First, these techniques will allow inspectors to get a more accurate view of the condition of a bridge. The site was created by nondestructive testing professionals and educators from around the world. Relevant identified uses of the substance or mixture and uses advised against intended use laundry bleach application method see technical data sheet. Request pdf experimenting with pixellevel ndt data fusion techniques. Our objective is to discuss the capability of the ndt methods currently used in the hydraulic turbine industry and propose some alternatives.
The second way by which ndt can help is by allowing inspectors to locate damage earlier. Nondestructive testing ndt consists of a variety of noninvasive inspection techniques used to evaluate material properties, components, or entire process units. Decision level multi method fusion of spatially scattered. Data fusion for automated nondestructive inspection ncbi. Ndtshm of composite plates timereversal lamb waves aircoupled ultrasonics cscan ultrasonics. Data fusion makes it possible to manage the contradictions. Condition assessment and characterization of materials and structures by means of nondestructive testing ndt methods is a priority need around the world to meet the challenges associated with the durability, maintenance, rehabilitation, retrofitting, renewal and health monitoring of new and. This site was designed to be a comprehensive source of information and materials for ndt and nde technical education.
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