This work proposes a methodology for non destructive testing (NDT) of reinforced concrete structures, using superficial magnetic fields and artificial neural networks, in order to identify the size and position of steel bars, embedded into the concrete. For the purposes of this paper, magnetic induction curves were obtained by using a finite element program. Perceptron Multilayered (PML) ANNs, ...

In the last decade, ultrasonic imaging systems have been an essential tool for diagnosis in medical and industrial applications, especially in the Non Destructive Testing area (NDT). Conventional ultrasonic imaging devices produce high quality images with good resolution and contrast. However, these machines are usually associated to a high cost in hardware resources, as well as in the time req...

BACKGROUND/AIMS The drink test has been regarded as a surrogate marker of gastric accommodation. The aims of this study were to develop a novel nutrient drink test (NDT) protocol and investigate its potential for application to a clinical trial of functional dyspepsia (FD). METHODS A novel NDT was designed, involving drinking 125 mL of nutrient 4 times at 5-minute intervals or until maximal t...

Abstract Terahertz technologies for non-destructive testing (NDT) are continuing to find their way into the industrial sector in context of very specific inspection tasks. Part this development is capability adapt terahertz systems such a that they can meet sometimes harsh challenges and requirements real-world scenarios. One scenario components with limited available measurement space. In part...

The use of non-metallic composites that are durable, low cost, and lightweight is growing fast in various industries. A commonly used form these materials the shape pipes can be used, for instance, oil gas industry. Such damaged due to material loss (defects holes), erosions, more which may cause major production failures or environmental mishaps. To prevent issues, non-destructive testing (NDT...

This study aims at improving shearography non-destructive testing (NDT) of deep defects in thick composites with thermal loading. Instead conventional global heating (GH), the core idea is to apply novel spatially modulated (SMH) for NDT. In this paper, finite element method (FEM) has been used advance towards a quantitative inspection tool composites. Both GH and SMH have performed experimenta...

The character of cracks is an important parameter in manufacturing of test pieces for UT qualification. In these studies we (Trueflaw and Fortum Nuclear Services) have manufactured 22 cracks by different production methods. Opening of cracks have been manipulated for different values. Sizing of the true dimensions of cracks has been made by destructive tests. These values are the basis for the ...

Two non-contact NDT & E (non-destructive testing and evaluation) techniques were employed in the inspection of quarry Pentelic marble samples; surface profilometry and infrared thermography. The samples were processed with different roughness treatments (i.e. 60, 80, 100, 220, 400 and 600 mesh) and were evaluated in the laboratory. Furthermore, different surface cleaning treatments were applied...

The requirement to increase inspection speeds for non-destructive testing (NDT) of composite aerospace parts is common to many manufacturers. The prevalence of complex curved surfaces in the industry provides motivation for the use of 6 axis robots in these inspections. The purpose of this paper is to present work undertaken for the development of a KUKA robot manipulator based automated NDT sy...