Portability

For the practical implementation of the above mentioned facts, the portable electronic digital coercive force meter with self-contained power supply, attached converter and closed type magnetic core. Instrument error is 5 %. ... 

The war itself also drove the development of improved and miniaturised electronic components for creating oscillators and amplifiers and, ultimately, semiconductors, which made practical the electronic systems needed in portable eddy current test instruments. The refinement of those systems continues to the present day and advances continue to be triggered by performance improvements of components and systems. In the same way that today s pocket calculator outperforms the large, hot room full of intercormected thermionic valves that I first saw in the 50 s, so it is with eddy current instrumentation. Today s handheld eddy current inspection instrument is a powerful tool which has the capability needed in a crack detector, corrosion detector, metal sorter, conductivity meter, coating thickness meter and so on. 

The contribution that Hocking wished to make was to refine the sensor system and the instrumentation paekage so as to be able to incorporate the necessary functionality within a lightweight portable battery operated instrument. This implied a lower power level and very low-noise instrumentation. We aimed also for a low cost instrument able to operate for several hours from fully charged batteries and able to operate at a pull speed of 500mm/second. 

Portable Eddy Curent Non-Destructive Testing Instrument. 

The Zond VD - 96 portable eddy-current flaw detector-tester is an original Russian development possessing heightened sensitivity for the surface defects and high inspection capacity. (Russia patent Xs 2063025. All-Union state standard certificate of Russian Federation JVa 2846 of 14. 07. 97)... 

Table 4 shows, the sources are available with physical sizes ranging from 1 mm x 1 mm up to 3 mm x 3 mm. They are produced from firmly compressed selenium pellets of cylindrical shape. The activities range up to 3 TBq or 80 Ci, which is the maximum allowed loading of the GammaMat SE portable isotope transport and working container, as well as the Source Projector M-Se crawler camera. 

The advent of a portable source of very high energy x-rays has opened up x-ray inspection possibilities in a wide range of environments. Applications include such fields as nuclear waste containers, bridges, nuclear and fossil power plants, surface and airborne transportation systems, space launch systems and other thick section NDT and other inspection problems that cannot be solved imaged using other NDT methods. 

As film we used AGFA Pb Vacupack D7 which was exposed using a portable Ir-192 source with an activity of ca. 50 Ci. The investigated tube diameters ranged between 40 mm and 80... 

There is a trend in the last years to extend the application range of metal-ceramic tubes also to medium power portable equipment 160kV to 300kV portable systems are well known in the market. 

The Pr EN 12668-1 concerns the verification of characteristics of ultrasonic flaw detector. It is mainly applicable to portable equipment incorporating Ascan visualisation on screen, and which bandwidth is comprised between 0,5 and 15 Mhz. The project describes three levels of verification ... 

Portable industrial PC with additional control electronics and application program... 

The modern Russian MIA flaw detectors use pulse version of the method [1-3], which peirnits to produce very portable (0.7 - 1.5 kg) and simple instruments, convenient especially for in-service testing. The objects to be tested are multilayer structures of reinforced plastics, metals and other materials honeycomb panels, antenna fairings, propellers, helicopter rotors and so on. In mentioned instruments amplitude-frequency analog signal processing is used. 

The software US-SCAN 3.0 (IBT GmbH, Ober-Ramstadt, Germany) provides all functions of a portable flaw detector and a powerful ultrasonic imaging in A-, B-, C- and D-scans. Not only motor driven scanners can he used, but also manual scanning systems with encoders. Further documentation and test reports can be carried out with Windows software. 

The HILL-SCAN 30XX boards can be used in different PCs. Desktop- and tower-PCs as well suited for laboratory uses. For in-field inspections rugged notebooks and portable PCs are advantageous. A typical portable system is shown in Fig. 2 (USPC 3010), used in MUSE (Mobile Ultrasonic Equipment). This portable PC not only contains the boards for ultrasonic testing but also a controller with power supply for stepper motors, so that a manipulator can be connected directly. The MUSE system is enlarged with a water circulation system which enables a local immersion technique" for in-field inspections. A typical result is shown in Fig. 3, which presents a D-scan of a CFRP- component in RTM-techniques. The defect area caused by an impact is clearly indicated. The manipulator is described in [3]. 

Fig.2 Portable PC used as ultrasonic system Fig-3 D- scan of an impacted RTM-panei...

The pulser/receiver HILL-SCAN 30XX boards satisfy DIN 25450. Typical applications are ultrasonie imaging systems for nuclear power stations and for aircraft, material characterization, transducer qualification, replacement of portable flaw detectors (inspections of welded joints), inspection of new materials, measurement systems with air eoupling. ... 

The Advanced Inspection Robot - AIR-1 is a portable (weight approx. 25 kg.) 6-axis articulated elbow type robot manipulator with 6 degrees of freedom. It is build from standard motor and control module components from FORCE Institutes Modular Scanner System and is controlled from within the UltraSlM/UlScan graphical generic robot control application. 

This electrical field potential is measured by means of portable millivoltmeter with high input resistance. The field registration is carried out in the mountain areas at the distance of 5 km and more, at the same time the minimal gradient value is about 10 mV/km. 

Be-1164 Development of a portable remote controlled reaMime radioscopy system for ouantitative Industrial insoection of larae thickness Mr. J. Rheinlandw RISO NATIONAL Labo... 

In non-destructive testing both the stationary and portable equipment is used, the latter - more frequently. Transportation of the equipment to the object to be tested demands adjustment of testing parameters directly before the examination realization. 

In the field of radiation methods of control, development work was performed in order to create the X-ray detectors with a low content of silver. X-ray TV systems with improved performance for automatic interpretation of the X-ray TV images, portable radiometers and dosimeters, creation of portable equipment for radioscopy of the welded joints of pipelines, etc. 

Threshold voltage. Batteries can only supply low voltages, so for portable appliances the switching voltage or tlireshold voltage must be sufficiently small. 

M. S. Warren and J. K. Salmon, A Parallel, Portable and Versatile Tdreecode, Proceedings, Seventh SIAM Conference on Parallel Processing for Scientific Computing, SIAM, Philadelphia (1995), pp. 319-324. 

W. T. Rankin and J. A. Board, Jr., A Portable Distributed Implementation of the Parallel Multipole Tree Algorithm, Proceedings, Fourth IEEE International Symposium on High Performance Distributed Computing, IEEE Computer Society Press (1995), pp. 17-22. 

Rankin, W., Board, J. A portable distributed implementation of the parallel multipole tree algorithm. IEEE Symposium on High Performance Distributed Computing. Duke University Technical Report 95-002. 

Kale, L., Krishnan, S. Charm-t—1- A Portable Concurrent Object Oriented System Based on C-(—1-. In Proceedings of the Conference on Object Oriented Programming Systems, Languages and Applications. A. Paepcke, editor. ACM Press, New York, N.Y., 1993. 

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