- Email: [email protected]
BAS meets spring
SALES ENGINEER PIEZEOLECTRIC
CERAMIC TRANSDUCERS
Required by Europe's Leading Manufacturer. The successful applicant will be energetic, ambitious, have a degree in Electronics or Physics and three years experience in technical electronic component design or selling. He will be based in Southampton but is likely to spend three days per week visiting UK customers. Attractive salary, contributory pension and life insurance scheme. Please apply in writing to the Product Manager - Mr. D. G. Legg, Verniton Limited, Thorn Hill, Southampton S09 5QF.
used remote from the bridge unit. An interswitching facility allows shallow water readings on the bridge unit to be shown on the recorder. Three depth scales may be used: 0 60 fathoms (phasing in increments of 45 to 225 fathoms); 0 - 1 2 0 fathoms (phasing in increments of 90 to 450 fathoms); and 0 - 1 2 0 0 fathoms (phasing - increments of 900, up to 4500 fathoms). In conjunction with an oceanographic precision depth recorder, four depth scales are available. Whichever mode is in use, a loud-speaker provides audio-monitoring of depth. Kelvin Hughes, New North Rd, Hainault, Ilford, Essex, UK
Stanford's ultrasonic camera An ultrasonic camera system for viewing internal body organs is currently being developed and evaluated at
Stanford Research Institute in the USA, under a three-year grant from the National Institutes of Health. Unlike ultrasonic visualization systems now in diagnostic use, this one will produce focused tv images of soft tissue structures within certain organs of the body. Such imaging is expected to be complementary to x-ray diagnosis because of the strong interaction between ultrasound and soft tissue: clearly, organs not 'visible' in x-radiation may well be visible if illuminated by an ultrasonic beam. Anticipated applications of the ultrasonic camera, with ils characteristic sensitivity and resolution, are in mass screening and multiphasic testing. Its short examinationtime requirement is of particular value. Engineering Sciences Laboratory, Stanford Research Institute, Menlo Park, California 94025, USA
Strengthening steel A new achievement has been noted in the steel industry of the USSR, the production of a special high-tensile steel. Conventional steel, treated with high-power ultrasound at a continuous-pouring works in Tula (South of Moscow), has been known for some time to have a strength almost double that of the untreated metal. The ultrasonic vibrations are claimed to improve the structure of the metal and increase serviceable output. The latest steel development is the production of a high boron content steel by treating the smelted metal at 3,000°C with a high-power ultrasonic beam. Fused in this way with boron, the steel withstands higher pressures than hitherto expected. Novosti Information Service, 3 Rosary Gardens, London SW7 4NW, UK
ANNOUNCEMENTS Research facility The Electronic Materials Unit of the Royal Radar Establishment exists to make research quantities of electronic materials developed by their Materials Research Division. Many of these can be made available on special order. The materials involved include those of interest to workers in acoustoelectronics, and are mostly inorganic single crystals not commercially available due to their novelty or the difficulty of their preparation. Materials still under development may be supplied for testing. Electronic Materials Unit, Royal Radar Establishment, St Andrew's Road, Great Malvern, Worcs WR14 3PS UK
BAS meets Spring The Spring Meeting of the British Acoustical Society will be held at Loughborough University of Technology in April this year. Two parallel technical sessions are being organised, on 'Aerodynamic noise sources in industry' and 'Ultrasonics in industry'. The former session will range over all aspects
4
of the generation, measurement and control of noise arising from the movement of a compressible fluid, including valves, gas turbines and combustion. The session on ultrasonics in industry will probably be arranged in three sections: non-destructive testing, high power applications and miscellaneous measurements. Delegates to both technical sessions will meet during the event to hear invited lectures and attend the presentation of the Society's Rayleigh and Silver medals. British Acoustical Society, 1 Birdcage Walk, London SWl, UK
Macrosonics meeting Papers are invited for tile meeting of Macrosonics on 22nd March 1972 at Chelsea College of Science and Technology. The meeting is organised jointly by the British Acoustical Society and the Acoustics Group of The Institute of Physics. Prospective authors should send offers of papers to Dr R. W. B. Stephens, Chelsea College of Science and Technology, Fulton Place, Fulham, London, SW6 5PR.
ULTRASONICS. J A N U A R Y 1972
CERAMIC TRANSDUCERS
Required by Europe's Leading Manufacturer. The successful applicant will be energetic, ambitious, have a degree in Electronics or Physics and three years experience in technical electronic component design or selling. He will be based in Southampton but is likely to spend three days per week visiting UK customers. Attractive salary, contributory pension and life insurance scheme. Please apply in writing to the Product Manager - Mr. D. G. Legg, Verniton Limited, Thorn Hill, Southampton S09 5QF.
used remote from the bridge unit. An interswitching facility allows shallow water readings on the bridge unit to be shown on the recorder. Three depth scales may be used: 0 60 fathoms (phasing in increments of 45 to 225 fathoms); 0 - 1 2 0 fathoms (phasing in increments of 90 to 450 fathoms); and 0 - 1 2 0 0 fathoms (phasing - increments of 900, up to 4500 fathoms). In conjunction with an oceanographic precision depth recorder, four depth scales are available. Whichever mode is in use, a loud-speaker provides audio-monitoring of depth. Kelvin Hughes, New North Rd, Hainault, Ilford, Essex, UK
Stanford's ultrasonic camera An ultrasonic camera system for viewing internal body organs is currently being developed and evaluated at
Stanford Research Institute in the USA, under a three-year grant from the National Institutes of Health. Unlike ultrasonic visualization systems now in diagnostic use, this one will produce focused tv images of soft tissue structures within certain organs of the body. Such imaging is expected to be complementary to x-ray diagnosis because of the strong interaction between ultrasound and soft tissue: clearly, organs not 'visible' in x-radiation may well be visible if illuminated by an ultrasonic beam. Anticipated applications of the ultrasonic camera, with ils characteristic sensitivity and resolution, are in mass screening and multiphasic testing. Its short examinationtime requirement is of particular value. Engineering Sciences Laboratory, Stanford Research Institute, Menlo Park, California 94025, USA
Strengthening steel A new achievement has been noted in the steel industry of the USSR, the production of a special high-tensile steel. Conventional steel, treated with high-power ultrasound at a continuous-pouring works in Tula (South of Moscow), has been known for some time to have a strength almost double that of the untreated metal. The ultrasonic vibrations are claimed to improve the structure of the metal and increase serviceable output. The latest steel development is the production of a high boron content steel by treating the smelted metal at 3,000°C with a high-power ultrasonic beam. Fused in this way with boron, the steel withstands higher pressures than hitherto expected. Novosti Information Service, 3 Rosary Gardens, London SW7 4NW, UK
ANNOUNCEMENTS Research facility The Electronic Materials Unit of the Royal Radar Establishment exists to make research quantities of electronic materials developed by their Materials Research Division. Many of these can be made available on special order. The materials involved include those of interest to workers in acoustoelectronics, and are mostly inorganic single crystals not commercially available due to their novelty or the difficulty of their preparation. Materials still under development may be supplied for testing. Electronic Materials Unit, Royal Radar Establishment, St Andrew's Road, Great Malvern, Worcs WR14 3PS UK
BAS meets Spring The Spring Meeting of the British Acoustical Society will be held at Loughborough University of Technology in April this year. Two parallel technical sessions are being organised, on 'Aerodynamic noise sources in industry' and 'Ultrasonics in industry'. The former session will range over all aspects
4
of the generation, measurement and control of noise arising from the movement of a compressible fluid, including valves, gas turbines and combustion. The session on ultrasonics in industry will probably be arranged in three sections: non-destructive testing, high power applications and miscellaneous measurements. Delegates to both technical sessions will meet during the event to hear invited lectures and attend the presentation of the Society's Rayleigh and Silver medals. British Acoustical Society, 1 Birdcage Walk, London SWl, UK
Macrosonics meeting Papers are invited for tile meeting of Macrosonics on 22nd March 1972 at Chelsea College of Science and Technology. The meeting is organised jointly by the British Acoustical Society and the Acoustics Group of The Institute of Physics. Prospective authors should send offers of papers to Dr R. W. B. Stephens, Chelsea College of Science and Technology, Fulton Place, Fulham, London, SW6 5PR.
ULTRASONICS. J A N U A R Y 1972