Electrical insulation with oxidized bitumen electrical cabling, condensers, batteries.  [c.289]

H = Hydraulic Hoses P = Power Cables S = Signal Cables  [c.271]

The paper discusses the application of dynamic indentation method and apparatus for the evaluation of viscoelastic properties of polymeric materials. The three-element model of viscoelastic material has been used to calculate the rigidity and the viscosity. Using a measurements of the indentation as a function of a current velocity change on impact with the material under test, the contact force and the displacement diagrams as a function of time are plotted. Experimental results of the testing of polyvinyl chloride cable coating by dynamic indentation method and data of the static tensile test are presented.  [c.239]

Specimens used in tests were sections of cables with PVC outer coating. PVC was plasticized with DOF softener. The materials considered were exposed to the radiation and thermal aging. The samples have been irradiated at room temperature by hard gamma rays with 10 rad/sec dose power. A number of samples had been heated for long different times at 90°C. Besides a special specimens were cut out from outer coating for test on tensile machine like "Instron". The total doses of irradiation, times of heating and elongations at break obtained with "Instron" are listed in Table 1.  [c.244]

Exciting developments based on electromagnetic induction raced along from that time, giving us the sophisticated products our everyday lives depend on. During most of the period productive uses for eddy current technology were few and few people believed in it as a usefiil tool eddy currents caused power loss in electrical circuits and, due to the skin effect, currents flowed only in the outer surfaces of conductors when the user had paid for all the copper in the cable. The speedometer and the familiar household power meter are examples of everyday uses that we may tend to forget about. The brakes on some models of exercise bicycle are based on the same principle.  [c.272]

Fligh-tech ceramics withstand great mechanical stresses even thin structures and sharp edges are feasible with high reliability. This allows connecting the HT cables reliably to the ceramic part of the tubes directly. Many available resin systems bond easily to ceramics.  [c.534]

The metal vacuum envelope is grounded and can be made quite thick. Even radiation-tight designs are feasible. The tube ean be shipped ready-to-use with a bonded cable.  [c.534]

The bonding of the HT cable to the tube reduces production costs and tube length.  [c.536]

A major advantage using the multiplier based SMART 160 is that the unit is self contained in its housing so the only cables that are required are the signal cables. This makes it possible to build the X-ray unit into a specially cooled, IP 65 sealed stainless steel housing so that the X-ray unit is protected from the very abrasive cleaning agents used in the food industry. The Tru-Vision unit is built into a similar IP 65 sealed housing opposite the X-Ray unit.  [c.591]

RCT are designed to successfully solve a whole number of tasks in nuclear power when testing fuel elements, in aviation and space industry when testing construction materials, nozzles and engine units, turbine blades and parts, in electromechanical industry-cables switching elements, electric motors in defense sphere- charges, equipment in prospecting for research of rock distribution and detection of precious stones in samples.  [c.598]

The changes described above also allowed much easier access to the high voltage cable for routine (6-month) owner directed, service operations, and provided better upper and lower x-ray cabinet and control cabinet ventilation. With the exception of the x-ray tubes, all the individual manufactured components, on all four systems are identical. There are very subtle differences in the warm-up/start-up sequence on the x-ray controllers on the newer systems due to model/year and x-ray tube differences. The last three systems were supplied with environmental type key-boards for the image processors and base-mounted , rather than conduit-mounted exterior warning indicators. The first system was subsequently upgraded to include the better keyboard and the external warning appliances/features.  [c.611]

Operated broadband amplifier 1, has uniform (not worse than 1 dB) frequency feature within the range of 1 to 50 MHz and the range of reinforcement from 0 to 90 dB. The input cascade has an impedance switch that enables to matching of sensors of different types and to avoid signals and distortions caused by the cable.  [c.731]

Setting up the test system, including the cable connections of the components  [c.778]

Small size, ruggedness, simple cabling and the ability to operate the equipment under adverse conditions in the field has also been design goals. The system should also conform with the regulations necessary for the CE-marking (i. e. standards and directives for EMC, Electrical Safety and Machine Safety).  [c.782]

The P-scan processing unit is shown in figure 2. It integrates the ultrasonic, digitizing, and digital signal processing parts of the system into a small unit. The PSP-4 operates as a remotely controlled front end. It can be controlled from a computer over a distance of up to several hundred metres, and needs no attention during an inspection job. By placing the front end processor relatively close to the scanner during the inspection, the rather critical ultrasonic cables can be kept short, even if the distance to the computer is long.  [c.784]

To meet the demand for flexibility the basic electronic components of the scanner system are build as individual modules (Master, Link, Driver and Motor Modules) containing control-and communication electronics. The modules connect through external cables.  [c.800]

Single Scanner main cable, 08 mm, max length 25 m.  [c.800]

Up to 20 modules can be connected to the network without the need for extra cable between the base station and the scanner is needed.  [c.801]

To simplify the mechanical connection of the motor modules to the scanner actuator axes, a number of gear units (strait, miter and worm gears) are part of the scanner module system (Figure 2, f). The system also includes a number of external sensor units e.g. an angle sensor (Figure 2, g) used for controlling scanner operation and position. The sensor signals (analogue signal, incremental encoder signal and resolver signal) can interface directly to the system through sensor input connectors on motor modules and motor driver units. Therefore, a sensor used in a specific scanner configuration will not result in any extra cables.  [c.802]

In addition to the controlling computer the system contains only a small control unit - PSP-4 (weight approx. 5 kg.) which among other system components includes a motor control system integrated closely with the PS-4 ultrasonic system. For communication between the PSP-4 control unit and the robot as well as robot power supply is used a single cable less than 10 mm. in diameter.  [c.870]

Locating and sizing reinforcement and pre-stressing cables  [c.999]

Condition of pre-stressing cables and injection grout  [c.999]

The most challenging of these applications has been the location and characterisation of anomalies in thick concrete structures using seismic methods and the detection of reinforcing steel and pre-stressing cables in congested structures using radar.  [c.999]

The radiographic technique is well established and has been used for years to inspect concrete structures. BS 1881 Part 205 provides recommendations regarding film quality, density and geometric sharpness, depending on the type of investigation. Lower quality radiographs are acceptable if the object is to determine the position of reinforcement, while more demanding investigations, such as the study of material density or existence of voids in pre-stressing cables require good contrast and low geometric unsharpness. The Betatron has a small focal spot (1.0x0 2 mm) and the focus-object distances are usually adequate to keep unsharpness at a low level, typically around 0.3.  [c.1001]

The special problem of inspecting pre-stressed cables  [c.1002]

Radiography provides the only means of reliably detecting voids in pre-stressed cable ducts or of detecting loss of section or fracture of eables inside the duets. The maximum thiekness of eonerete whieh ean be radiographed for confident loeation of voids inside ducts is of course dependant on a number of variables, e g. amount of reinforcing bars, size of void in duet etc  [c.1002]

A great deal of effort has been put into promoting some seismic techniques for this same purpose. The obvious advantage being that they require only one-sided access and are more easily applied on site. However, seismic pulse echo techniques will only under the right circumstances give an indication of the risk of voids occurring inside ducts, and will not give a confident answer. The reason for this is that concrete has a tendency to shrink causing loss of bond from the cable duct wall. A lack of bond caused by shrinkage or other reasons will cause the seismic wave to reflect from the duct walls, in the same way as would a large void.  [c.1002]

Figure 5(a) and (b) represent cable ducts in concrete elements. In both cases the ducts have been injected with cement grout to provide corrosion protection. In the ease of 5(a) the grout has shrunk causing loss of bond with the duct wall. In the case of 5(b) there is a large void. With respect to risk of damage to the pre-stressing cables, only case 5(b) ean be regarded as a problem case.  [c.1002]

Wilhelmy plate (4) force transducer (5) pointer for water level (6) reservoir for aqueous subphase (7) suction tubes for cleaning the surface (8) inlet and outlet in trough base for thermostatted water (9) accessory rack (10) micrometer (11) vertical slide for Wilhelmy plate assembly (12) barrier drive and lifting assembly (13) linear motion assembly for barriers (14) shafts for 13 (15) cable for barrier movement (16) control knob for barrier lift mechanism (17) knob for raising and lowering suction tubes (18) optical shaft encoder for barrier position (19) knob for manual barrier drive (20) clutch and gear assembly for motorized barrier drive (21) barrier drive motor (22) grooved drum for barrier drive cable (23) support plate (24) trough base. (Courtesy of G. T. Barnes.)  [c.115]

Cable J R and Albrecht A C 1986 The inverse transform in resonance Raman scattering Conf. sponsored by the University of Oregon ed W L Peticolas and B Hudson  [c.1227]

Cable J R and Albrecht A C 1986 A direct inverse transform for resonance Raman scattering J. Chem. Phys. 84 4745-54  [c.1227]

Raab E, Prentiss M, Cable A, Chu S and Pritchard D E 1987 Trapping of neutral sodium atoms with radiation pressure Phys.Rev.Lett. 59 2631-4  [c.2480]

Nylon A class of synthetic fibres and plastics, polyamides. Manufactured by condensation polymerization of ct, oj-aminomonocarboxylic acids or of aliphatic diamines with aliphatic dicarboxylic acids. Also rormed specifically, e.g. from caprolactam. The different Nylons are identified by reference to the carbon numbers of the diacid and diamine (e.g. Nylon 66 is from hexamethylene diamine and adipic acid). Thermoplastic materials with high m.p., insolubility, toughness, impact resistance, low friction. Used in monofilaments, textiles, cables, insulation and in packing materials. U.S. production 1983 11 megatonnes.  [c.284]

After the drilling has progressed for some time, a new piece of drill pipe will have to be added to the drill string (see below). Alternatively, the bit may need to be replaced or the drill string has to be removed for logging. In order to pull out of hole , hoisting equipment is required. On a rotary rig this consists of the hook which is connected to the travelling block. The latter is moved up and down via a steel cable block Und ) which is spooled through the crown blockon to a drum draw workd ). The draw works, fitted with a large brake, move the whole drill string up and down as needed. The derrick or mast provides the overall structural support to the operations described.  [c.38]

Figure 5.37 depicts the basic set up of a wireline logging operation. A sonde is lowered downhole after the drill string has been removed. The sonde is connected via an insulated and reinforced electrical cable to a winch unit at the surface. At a speed of about 600m per hour the cable Is spooled upward and the sonde continuously records formation properties like natural gamma ray radiation, formation resistivity or formation density. The measured data is sent through the cable and is recorded and processed in a sophisticated logging unita the surface. Offshore, this unit will be located in a cabin, while on land it is truck mounted. In either situation data can be transmitted in real time via satellite to company headquarters if required.  [c.131]

I/O. All the I/O (apart from EC probes) are cormected on this board. It is then easier to manage EMC problems, and to make the cabling. As the I/O board is very simple, it is easy to customise it for users who want specific IP modules.  [c.277]

The ethemet connection is combined with the power supply to the PSP-4 and the connected scanner into a single standard cable, that can be used for distances up to 100 m. By using special cables, the distance between the PSP-4 and the eontrol unit can be extended to practieally any distance.  [c.784]

A new system for automated ultrasonic inspection has been described. The key element of the new system is the remotely controlled front end processor, which includes ultrasonics, digital conversion and processing electronics, as well as scanner control electronics. The system operation and image analysis is performed on a portable industrial laptop computer. Data communication between the front end processor and the computer takes place by means of an ethemet connection through a cable which may be several hundred metres long. An inspection may include simultaneous execution of more inspection types in a single scanning P-scan, T-scan. Through Transmission, TOFD and A-scan. Data storage in frill 3D and off-line reconstruction of data is supported.  [c.789]

The design of pulse sequences to selectively control chemical bond breaking is naturally fomuilated as a problem in the calculus of variations [17, ]. This is the mathematical apparatus for finding the best shape, subject to certain constraints. For example, the shape which encloses the maximum area for a given perimeter the minimum distance between two points on a sphere subject to the constraint that the comiecting path be on the sphere the shape of a cable of fixed length and fixed endpoints which minimizes the potential energy the trajectory of least time the path of least action all these are searches for the best shape, and are problems in the classical calculus of variations. In our case, we are searching for the best shape of laser pulse intensity against time. If we admit complex pulses this involves an optimization over the real and imaginary parts of the pulse shape. We may be interested in the optimal pulse subject to some constraints, for example for a fixed total energy in the pulse.  [c.268]

In a two detector coincidence experiment, of which figure Bl.10.7 is an example, pulses from the two detectors are amplified and then sent to discriminators, the outputs of which are standard rectangular pulses of constant amplitude and duration. The outputs from the two discriminators are then sent to the start and stop inputs of a TAC or TDC. Even tliough a single event is responsible for ejected and scattered electrons, the two electrons will not arrive at tlie detectors at identical times because of differences in path lengths and electron velocities. Electronic propagation delays and cable delays also contribute to the start and stop signals not arriving at the inputs of the TAC or TDC at identical times sometimes the start signal arrives first, sometimes  [c.1428]

Waveguides are coimnonly used to transmit microwaves from the source to the resonator and subsequently to the receiver. For not-too-high-frequency radiation (<10 GHz) low-loss MW transmission can also be achieved usmg strip-lines and coaxial cables. At the output of a klystron an isolator is often used to prevent back-reflected microwaves to perturb the on-resonant klystron mode. An isolator is a microwave-ferrite device that pemiits the transmission of microwaves in one direction and strongly attenuates their propagation in the other direction. The prmciple of this device involves the Faraday effect, that is, the rotation of the polarization  [c.1559]

Cable A, Prentiss M and Bigelow N P 1990 Observation of sodium atoms in a magnetio molasses trap loaded by a oontinuous unoooled souroe Opt. Lett. 15 507-9  [c.2480]

See pages that mention the term Cables : [c.24]    [c.236]    [c.271]    [c.271]    [c.322]    [c.337]    [c.612]    [c.800]    [c.1429]   
See chapters in:

Handbook of cathodic corrosion protection  -> Cables