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In this work, the evaluation of brake disc fixation bolt integrity, used at high speed train wheels, is presented. Inspection procedure is detailed, and it is shown how progressive focusing technique (ProFoc®) ensures the best lateral resolution at any inspection depth.

The goal of the inspection is to detect three artificial notches that emulate a broken thread at different depths. Figure 2 shows resultant images with three configurations: (a) fixed focus at 20mm, (b) fixed focus at 40 mm and (c) progressive focusing (ProFoc®).

A quite short deep of field (DOF) is obtained when a single focus is applied, which prevents to evaluate the whole component with a single image. Progressing focusing technique overcomes this problem, because it maintains a constant angular resolution at any inspection depth.


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DASEL launches a series of handheld tools for NDT, based on Android Operative System.

Ultrasound Calc, Phased Array Wizard and TOFD-Calc contain all calculations which are frequently required in industrial applications by NDT technicians of levels II  and III.

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MotorMOTION is a fully programmable stepper motor control unit, capable of simultaneously controlling up to 3 axes, with configurable acceleration ramp and micro-steps.

It also includes 6 limit switches and emergency stop switch control, and supports motor currents from 1.2A up to 5.6A. This unit is provided with an user software with B and C-Scan capabilities. It also includes a programming library for C++, LabView and Matlab developments.

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FocalSim is a fast simulation software suite can handle complex geometries, as well as the latest developments in probes, inspection strategies and data-analysis techniques.

Being able to accurately simulate your inspection during the design process, it allows you to identify and account for critical issues. This procedure greatly reduces unforeseen problems, and thus, additional costs during operation

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All the equipment manufactured by DASEL is supported by powerful software tools to easily configure the system parameters, display the signals and images and evaluate possible defects.

DASEL also provides a set of Library Toolboxes for different programming environments such as C++, LabVIEW or MATLAB, in order to facilitate the integration of their equipments into automatic inspection systems and R&D laboratories.

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ULTRAVIEW : Conventional Ultrasound

Intuitive and easy to use, it allows taking advantage of all features available in ULTRASCOPE systems. It is possible to display the captured A-scan, B-Scan and C-Scan.

SCANVIEW : Phased-Array software suite

Its intuitive design reduces the learning curve, and so on, the time required to configure the equipment. It takes maximum advantage of all functionality included in SITAU systems.

TOFDVIEW : TOFD software suite

With this tool you can get the maximum performance of DIFRASCOPE systems. It includes many advanced processing techniques like lateral wave straightening and SAFT).



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