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Manually-pulsed portable X-ray device
Manually-pulsed portable X-ray device A portable, manually-pulsed X-ray device which does not require the continuous shielding of an isotope source or a large electrical power conditioning unit has been developed at Battelle Memorial Institute's Columbus Laboratories in the USA.
The device, says Battelle, is an outgrowth of a concept originally demonstrated in the mid-1960s by Professor Robert McMaster at Ohio State University.
Battelle Columbus Laboratories, 505 King Avenue, Columbus, OH 43201, USA
The system consists of a manuallydriven hydraulic ram that compresses and then suddenly removes the pressure from a stack of piezoelectric crystals, generating a high-voltage pulse. The highvoltage end of the crystal stack is connected to a 150 kV flash X-ray tube, which in a single 70 ns discharge is sufficient to expose an x-ray film. Since it is portable the device has potential for radiographing critical parts in remote locations, such as road bridges and inspection of underwater structures and pipes.
Mobile high-intensity ultraviolet light source, the Kromayer lamp from Hanovia
Mobile ultraviolet source A mobile, high-intensity ultraviolet Demonstrating hydraulic activation of Battelle's portable X-ray device
Flaw detector measures thin materials Aerospace applications and measurement of thin materials are the main uses highlighted by Wells-Krautkramer for its USL 48 portable ultrasonic flaw detector. The unit has a selectable five-band amplifier, and range is from 4 mm up to 6 m. Immersion techniques can be used with the instrument. Fatigue inspection of a Rolls-Royce aircraft
engine with a flexible fibrescope from Fort
Flexible fibrescopes have improved optics A range of flexible fibrescopes has been announced by Fort with, the company says, improved optics in the variable focus eyepiece and at the objective tip to enhance image quality. Thirty five different models are offered, with outside diameters of 4.5, 6.8 and 11 mm and with working lengths from 1 to 3 m. Models with either two-way or four-way remote steerable tips are available and an attachment for converting from direct viewing to side viewing is included with each fibrescope. The fibrescopes can be used with 35 mm or polaroid photography, video and image enlarging systems.
Fort Fibre Optics Research and Technology Ltd, 2 Riverdale Estate, Vale Road, Tonbridge, Kent TN9 1SS, UK
Typical detection capability specified by the company is: in steel, with delay line contact probes, it can detect 1.19 mm diameter flat-bottomed holes 1.27 mm below the surface; with normal probes the same size hole can be detected 1.90 mm below the surface. In immersion mode a 0.40 mm diameter hole can be detected 1.90 mm below the surface in titanium.
light source, the Kromayer lamp, has been developed by Hanovia and could be used for crack and leak detection and fluorescence analysis. Interchangeable quartz applicators focus the lamp on small or inaccessible areas. The ultraviolet source is a watercooled, medium pressure mercury vapour arc tube which emits radiation in the 2 5 4 to 4 3 6 nm wavelength range. The hand-held lamp is connected to a mobile trolley control unit fitted with an intensity correction switch and a 'time-elapse' meter. A thermal cutout protects the lamp against cooling system failure and a safety screen is fitted to cut off radiation when the unit is running but not in use.
Hanovia Ltd, 145 Farnham Road, Slough, Berkshire SL 1 4XB, UK
Built-in distance-amplitude correction, with 40 dB dynamic range, allows signal heights to be equalized across the screen. Immersion techniques can be adopted through an interface triggering circuit. In this mode the unit can be used for production-line testing of volume manufactured components. The unit weighs 8.4 kg, and rechargeable batteries give 8 h operation.
Wells-Krautkramer Ltd, Blackhorse Road, Letchworth, Herts SG6 1HF, UK
NDT INTERNATIONAL. FEBRUARY 1985
Measuring the thickness of a coolant pipe on the engine of a Spitfire V using WellsKrautkramer's USL 48 portable ultrasonic flaw detector
41
The device, says Battelle, is an outgrowth of a concept originally demonstrated in the mid-1960s by Professor Robert McMaster at Ohio State University.
Battelle Columbus Laboratories, 505 King Avenue, Columbus, OH 43201, USA
The system consists of a manuallydriven hydraulic ram that compresses and then suddenly removes the pressure from a stack of piezoelectric crystals, generating a high-voltage pulse. The highvoltage end of the crystal stack is connected to a 150 kV flash X-ray tube, which in a single 70 ns discharge is sufficient to expose an x-ray film. Since it is portable the device has potential for radiographing critical parts in remote locations, such as road bridges and inspection of underwater structures and pipes.
Mobile high-intensity ultraviolet light source, the Kromayer lamp from Hanovia
Mobile ultraviolet source A mobile, high-intensity ultraviolet Demonstrating hydraulic activation of Battelle's portable X-ray device
Flaw detector measures thin materials Aerospace applications and measurement of thin materials are the main uses highlighted by Wells-Krautkramer for its USL 48 portable ultrasonic flaw detector. The unit has a selectable five-band amplifier, and range is from 4 mm up to 6 m. Immersion techniques can be used with the instrument. Fatigue inspection of a Rolls-Royce aircraft
engine with a flexible fibrescope from Fort
Flexible fibrescopes have improved optics A range of flexible fibrescopes has been announced by Fort with, the company says, improved optics in the variable focus eyepiece and at the objective tip to enhance image quality. Thirty five different models are offered, with outside diameters of 4.5, 6.8 and 11 mm and with working lengths from 1 to 3 m. Models with either two-way or four-way remote steerable tips are available and an attachment for converting from direct viewing to side viewing is included with each fibrescope. The fibrescopes can be used with 35 mm or polaroid photography, video and image enlarging systems.
Fort Fibre Optics Research and Technology Ltd, 2 Riverdale Estate, Vale Road, Tonbridge, Kent TN9 1SS, UK
Typical detection capability specified by the company is: in steel, with delay line contact probes, it can detect 1.19 mm diameter flat-bottomed holes 1.27 mm below the surface; with normal probes the same size hole can be detected 1.90 mm below the surface. In immersion mode a 0.40 mm diameter hole can be detected 1.90 mm below the surface in titanium.
light source, the Kromayer lamp, has been developed by Hanovia and could be used for crack and leak detection and fluorescence analysis. Interchangeable quartz applicators focus the lamp on small or inaccessible areas. The ultraviolet source is a watercooled, medium pressure mercury vapour arc tube which emits radiation in the 2 5 4 to 4 3 6 nm wavelength range. The hand-held lamp is connected to a mobile trolley control unit fitted with an intensity correction switch and a 'time-elapse' meter. A thermal cutout protects the lamp against cooling system failure and a safety screen is fitted to cut off radiation when the unit is running but not in use.
Hanovia Ltd, 145 Farnham Road, Slough, Berkshire SL 1 4XB, UK
Built-in distance-amplitude correction, with 40 dB dynamic range, allows signal heights to be equalized across the screen. Immersion techniques can be adopted through an interface triggering circuit. In this mode the unit can be used for production-line testing of volume manufactured components. The unit weighs 8.4 kg, and rechargeable batteries give 8 h operation.
Wells-Krautkramer Ltd, Blackhorse Road, Letchworth, Herts SG6 1HF, UK
NDT INTERNATIONAL. FEBRUARY 1985
Measuring the thickness of a coolant pipe on the engine of a Spitfire V using WellsKrautkramer's USL 48 portable ultrasonic flaw detector
41