Computerized training system

Computerized training system

- N e w equipment after 1 yr, give a good prediction of plant lifetime, which will be of value in forward planning. AC potential drop techniques, whic...

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- N e w equipment after 1 yr, give a good prediction of plant lifetime, which will be of value in forward planning. AC potential drop techniques, which are only applicable to surface-breaking flaws where there is access to that surface, may also be used in certain cases. The systematic errors in ACPD will be eliminated in monitoring, and the method is well suited to continuous monitoring. For geometries where standard TOFD using two transducers connected by a coupling bar cannot be used, monitoring can be based on scanning with a pulse-echo probe and subsequent image processing, but the relatively poor accuracy in this case will not give an early prediction of probable plant life. At present, TOFD inspections to detect and size flaws are carried out with Zipscan, which is designed for rapid survey work. At present its accuracy is limited by the 20 MHz digitizing rate, and so the monitoring service will

initially use slower but more accurate Camac-based equipment. It is planned to upgrade the digitizer of the Zipscans to 100 MHz within a few months, to enable the initial rapid survey and more accurate monitoring measurements to be made with the same equipment.

National NDT Centre, Harwell Laboratory, Didcot, Oxon, OXl 1 ORA, UK

High sensitivity microradiometer Temperature resolution better than +0.002°C is possible with the high-sensitivity scanning micro-radiometer developed by the Aerospace and Defence Systems Division of Sira Ltd. According to the company, this resolution is two orders of magnitude higher than that of other thermographic systems currently available. The instrument uses microcomputer control for automatic remote sensing of

thermal emissions from one or many points within a preselected, variable field of view, in the 8 #m to 12/~m spectral region. It also gives high spatial resolution, with a measurement point size of 0.5 mm, and may be calibrated to better than 0.1 °C. The system comprises a detection unit, an interface unit and a computer control console with high-resolution colour monitor and keyboard. Thermal data are displayed either digitially or as graphs, or as a colour-coded thermal map with eight selectable colour scales and a choice of temperature units and displayed scale values. The output can also be directed to a printer, colour plotter or a host computer via an RS232C link. Data are stored automatically to hard disk as the scans take place. Connection to a dual floppy disk drive is also provided for archiving or transportation of the information to another computer.

SlRA Ltd, South Hill, Chislehurst, Kent, BR7 5EH, UK

-International news Computerized training system The release of Expert Training System (ETS) Version 3.0 has been announced by Karta Technology. This testing and training software enables users to create multiple choice tests or administer NDE certification tests using ASNT questions and answers. Modules for UT, RT, MT, PT, and ET levels I, II, and III for training and testing are available. The program is completely menu-driven and the software and manual are designed for people with little or no computer experience. Features include: training or testing mode (hints and explanations are

NDT International August 1 989

provided in the training mode), ability to print multiple tests in either identical or random versions, an extensive database for personnel files, and the capability to store and graphically display student scores. A new feature offered in ETS 3.0 is a built-in word processor for creating tests or import questions from any word processor capable of storing text in the ASCII format. Password protection provides restricted access to confidential data. The software is not copy protected and operates on IBM PCs and compatibles. A demonstration disk is available.

N DT company acquired

Karta Technology Inc, 1892 Grandstand, San Antonio, TX 78238, USA

A.E. Venture Group, PO Box 10, South Marston Industrial Estate, Swindon, Wiltshire, SN3 4YG, UK

Aerospace Engineering has acquired Cartis Inspection Technology for £115 000. Cartis designs and manufactures filmless real-time inspection equipment, which is used in the nondestructive testing and analysis of materials and components. Two of the company's former employees, Subash Sood and Mike Smith, have both accepted offers for fresh employment with the Aerospace subsidiary.

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