‘Pulsatron’ booklet

‘Pulsatron’ booklet

Part 2 covers the automatic examination of welded butt joints. When the standard was first published it recommended procedures agreed among organizati...

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Part 2 covers the automatic examination of welded butt joints. When the standard was first published it recommended procedures agreed among organizations chiefly interested in the manufacture and use of boilers and pressure vessels. It now covers automatic examination in a range of shapes and forms of ferritic steels, in addition to laying down the broad principles of automatic ultrasonic examination.

Sonatest’s range of equipment incIudes three basic fIaw detectors: a portable; a more versatile, heavier portable; and a bench unit. They also produce thickness gauges and probes. The arrangement is described as one of cooperation and is not a take over. Both organizations remain completely independent. Balteau SA, 4610 Beyne-Heusay, Liege, Belgium

Part 3 covers the manual examination of nozzle welds, as before. Both parts include guidance on the dgs (distance, gain, size) diagram and on the determination of probe characteristics and sensitivity settings.

Sonatest, Hood Street, Northampton, UK - until early 1973 and then - Old WolvertonRoad, Milton Keynes, Buckinghamshire, UK

Rritish Standards Institution, Sales Branch, 101 Pentonville Road, London NI 9ND, UK

Bringing home the bacon

‘Pulsetron’ booklet Kerry Ultrasonics have issued a six page publication on their range of ‘Pulsatron’ high-intensity ultrasonic cleaning equip ment. It outlines the principles of ultrasonic cleaning and its advantages over other cleaning methods. Kerry’s range of ‘Pulsatron’ equipment is described with full technical specifications on each unit. Kerry Ultrasonics L td, Hunting Gate, Wilbuty Way, Hitchin, Hertfordshire, UK

Dutch holding company formed A holding company, Krautkramer-Branson International BV, has been formed in The Netherlands to control the affairs of two of the world’s major ultrasonic equipment manufacturers - J. and H. Krautkramer of Cologne and the nondestructing testing division of Branson Instruments. The move is part of Wells-Krautkramer’s plan to increase their share of the UK market in ultrasonic instruments and automatic installations. Wells-KrautkramerL td, Blackhorse Road, Letchworth, Hertfordshire, UK BR flaw detector contract Portable ultrasonic flaw detector units made by Baugh and Weedon Ltd are being supplied to British Rail. Used in conjunction with a custom-built probe array for testing the critical areas of rails, the units give both visual and audible indication of faults. This is the second order for portable equipment received from British Rail, The first was awarded in March 1970. Baugh and Weedon Ltd, Blackfriars Street, Hereford, Hertfordshire, UK European firms co-operate Balteau SA of Liege in Belgium, Balteau Electric Corporation of Stamford, Connecticut, and Sonatest of Northampton, UK, have agreed to co-operate where they have common interests in non-destructive testing. Balteau who manufacture industrial x-ray equipment and who have an international sales organization, will sell the new range of Sonatest ultrasonic equipment (see New Equipment). Previously, Sonatest have had an office in Switzerland but have made little attempt to export.

ULTRASONICS.

JANUARY

1973

The Canadian Department of Agriculture (CDA) has recently reported its success with using ultrasonics to measure the quality of meat on livestock. The report appeared in CanadianNondestructive Testing News and stated that the technique could now accurately measure back fat thickness and loin eye area in pigs, and went on to say that in future the technique will be applied to beef cattle and sheep. The report followed the completion of a research programme by the Livestock Division of the CDA. In 1969 the Division analysed some European research results which appeared very encouraging and the first steps were taken towards a demonstration of ultrasonic equipment at the Pig Test Station, Waterloo, Ontario, in conjunction with ElectroPhysical Instruments Ltd. Similar experiments date back to 1962 at the University of Guelph, Ontario, and other research centres in Canada. The first results were a success and led to a more extensive research project at the CDA Brandon Research Station, Manitoba. In this project 154 young boars were ultrasonically measured for average back fat thickness and loin eye area. The animals were also ‘ruler probed’ with the so called ‘ruler-stab method’, in which a small incision is made in the skin of the pig in the mid-back area and about one inch lateral off the backbone. A small steel ruler is then inserted into the incision and gradually pushed through the fat cover of the pig until it comes to a stop on top of the muscle and at this point a fat depth reading is taken. The method is not painless, and from the humane point of view very strongly rejected. It was, however, the only method of measuring back fat thickness before the introduction of ultrasonic techniques. All the pigs were then slaughtered and the actual carcass results compared with ultrasonic results and the ruler probe results. These results showed that the ultrasonic technique was superior to the ruler probe, more accurate, painless, and more humane. For example the following correllations were obtained: fat r = 0.94; loin eye area r = 0.88. The equipment used during the trials was a Krautkramer USK-5 battery operated unit with a 2 MHz normal probe. Krautkramer have since, however, developed the USM 2F, specially designed for live measurements on pigs, cattle and sheep, and even more recently the Vidison unit. This latest device, produced jointly by Krautkramer and Siemens AG, can take very clear Polaroid cross-section pictures of the fat cover and loin muscle area. At present there are about 30 USM 2Fs in operation within the Canadian livestock testing programme, showing that the technique has now been officially recognized.

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