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Torquing

Torquing—Vibration is an inherent problem of chainsaws, and over the years 1 have noticed the struggle of manufacturers to design bolts, nuts and screw s that won t shake loose. While modern design has come close to finding the proper bolt, nut, washer and lock nut combinations, proper torquing is still vital. [Pg.5]


Between the bit and the surface, where the torque is generated, we find the drill string (Fig. 3.9). While being mainly a means for power transmission, the drill string fulfils several other functions, and if we move up from the bit we can see what those are. [Pg.37]

High deviation angles (above 60°) may cause excessive drag or torque while drilling, and will also make it difficult to later service the well with standard wireline tools. [Pg.49]

The torque to obtain the specified body force under construction conditions and on bolts removed from the bridge. [Pg.8]

Fig. 7 shows the torque necessary to obtain the specified body force under construction conditions and in tbe state when removed from the bridge. It can well be seen that the change of the friction coefficient causes a very big scattering, and the necessary torque is much bigger than specified. The distribution of the results of a measurement performed on 1,127 bolts is presented in Figure 8. An average of 80% of nominal body force was found by the new method. The traditional method found the nuts could be swivelled much further than specified on 42 bolts, these bolts were found to have 40 - 60 % body force by the new method. [Pg.9]

The traditional method for investigating the forces originating in the body of the bolt, which is based on measuring the torque of the nut, can detect only the bolts with a very great lack of body force since tbe friction coefficient worsens with time. [Pg.9]

Figure Al.6.4. FVH diagram, showing the eoneept of adiabatie following. The Bloeh veetor, f, preeesses m a narrow eone about the rotating frame torque veetor, i2. As the detuning. A, ehanges from negative to positive, the field veetor, J , beeomes inverted. If the ehange m j is adiabatie the Bloeh veetor follows the... Figure Al.6.4. FVH diagram, showing the eoneept of adiabatie following. The Bloeh veetor, f, preeesses m a narrow eone about the rotating frame torque veetor, i2. As the detuning. A, ehanges from negative to positive, the field veetor, J , beeomes inverted. If the ehange m j is adiabatie the Bloeh veetor follows the...
Other external forces or potentials can also be used, e.g., constant forces, or torques applied to parts of a protein to induce rotational motion of its domains (Wriggers and Schulten, 1997a). [Pg.42]

Ljii.iiitiJtTi mechanical calculation on this molecule used 1000 basis functions). However, dis-nilnited multipole models have not yet been widely incorporated into force fields, not least because of the additional computational effort required. It can be complicated to calculate llic atomic forces with the distributed multipole model in particular, multipoles that are lull located on atoms generate torques, which must be analysed further to determine the roi es on the nuclei. [Pg.215]

Figure 5,16. It is assumed that by using an exactly symmetric cone a shear rate distribution, which is very nearly uniform, within the equilibrium (i.e. steady state) flow held can be generated (Tanner, 1985). Therefore in this type of viscometry the applied torque required for the steady rotation of the cone is related to the uniform shearing stress on its surface by a simplihed theoretical equation given as... Figure 5,16. It is assumed that by using an exactly symmetric cone a shear rate distribution, which is very nearly uniform, within the equilibrium (i.e. steady state) flow held can be generated (Tanner, 1985). Therefore in this type of viscometry the applied torque required for the steady rotation of the cone is related to the uniform shearing stress on its surface by a simplihed theoretical equation given as...
The stress field corresponding to this regime is shown in Figure 6.18. As this figure shows the measuring surface of the cone is affected by these secondary stresses and hence not all of the measured torque is spent on generation of the primary (i.e, viscometric) flow in the circumferential direction. [Pg.169]

I liis simulation provides the quantitative measures required for evaluation of the extent of deviation from a perfect viscometric flow. Specifically, the finite element model results can be used to calculate the torque corresponding to a given set of experimentally determined material parameters as... [Pg.170]

In the case of a polyatomic molecule, rotation can occur in three dimensions about the molecular center of mass. Any possible mode of rotation can be expressed as projections on the three mutually perpendicular axes, x, y, and z hence, three moments of inertia are necessar y to give the resistance to angular acceleration by any torque (twisting force) in a , y, and z space. In the MM3 output file, they are denoted IX, lY, and IZ and are given in the nonstandard units of grams square centimeters. [Pg.106]

Write the rotational analog of Hooke s law for the torque x driving the oseillation in Problem 3. Write the rotational analog of Newton s second law. Combine the two laws to obtain the rotational analog of the Newton-Hooke equation, Eq. (4-1). [Pg.129]

The K quantum number ean not ehange beeause the dipole moment lies along the moleeule s C3 axis and the light s eleetrie field thus ean exert no torque that twists the moleeule about this axis. As a result, the light ean not induee transitions that exeite the moleeule s spinning motion about this axis. [Pg.454]

The radius R also applies to the entire fluid sample. Since torque equals the product of force and R, canceling out one power of R leaves the shearing force acting on the fluid on the left-hand side of Eq. (2.7). [Pg.82]

A constant force is applied to an ideal elastomer, assumed to be a perfect network. At an initial temperature Tj the length of the sample is Ij. The temperature is raised to Tf and the final length is If. Which is larger Ij or If (remember F is a constant and Tf > Tj) Suppose a wheel were constructed with spokes of this same elastomer. From the viewpoint of an observer, the spokes are heated near the 3 o clock position-say, by exposure to sunlight-while other spokes are shaded. Assuming the torque produced can overcome any friction at the axle, would the observer see the wheel turn clockwise or counterclockwise How would this experiment contrast, in magnitude and direction, with an experiment using metal spokes ... [Pg.193]

Techniques for evaluating processing stabiHty and mechanochemical effects include using a Brabender torque rheometer (29,30), injection mol ding (26,28), capillary rheometry (26,28), and measuring melt index as a function of residence time (26). [Pg.203]

The first methanol bus in the world was placed in revenue service in Auckland, New Zealand in June 1981. It was a Mercedes O 305 city bus using the M 407 hGO methanol engine. This vehicle operated in revenue service for several years with mixed results. Fuel economy on an equivalent energy basis ranged from 6 to 17% mote than diesel fuel economy. Power and torque matched the diesel engine and drivers could not detect a difference. ReHabiUty and durabihty of components was a problem. Additional demonstrations took place in Berlin, Germany and in Pretoria, South Africa, both in 1982. [Pg.428]


See other pages where Torquing is mentioned: [Pg.35]    [Pg.38]    [Pg.38]    [Pg.41]    [Pg.46]    [Pg.48]    [Pg.51]    [Pg.3]    [Pg.120]    [Pg.1470]    [Pg.2042]    [Pg.2555]    [Pg.352]    [Pg.355]    [Pg.356]    [Pg.356]    [Pg.360]    [Pg.205]    [Pg.385]    [Pg.396]    [Pg.161]    [Pg.170]    [Pg.89]    [Pg.108]    [Pg.81]    [Pg.82]    [Pg.108]    [Pg.128]    [Pg.128]    [Pg.1004]    [Pg.335]    [Pg.323]    [Pg.429]   


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Accelerating torque

Acceleration torque

Angular torque

Applied torque

Automotive transmission/torque

Back-torque

Bending moments and torque

Body torque/couple

Bolt Torque Effect

Brabender torque

Brabender torque rheometer

Brake torque

Braking torque

Breakaway torque

Capillary torque

Coefficient friction torque

Constant Torque Characteristics

Constant torque speed control

Control direct torque

Control torque

Control torque sensors

Conveyor torque

Couple/Torque

Couple/Torque surface

Curing torque strength

Damping torque sensors

Development of High Torques, Volumes and Screw Speeds

Differential torque analysis

Drive motor torque

Driving torque

Elastic torques

Electric dipole torque

Electrical properties dielectric torque

Electrostatic torques

Engine torque

Equation torque balance

Extrusion torque

Fasteners torque

Ferroelectric torque

Field Free Energy and Torques

Flagellar motor torque generation

Flexoelectric effect surface torques

Fluctuating torque model

Force and torque

Force, torque, and stress in systems with slab geometry

Force-torque vector

Gravitational torques

Haake rheocord torque rheometer

High-torque

INDEX torque

Impeller torque

Induction motors Maximum torque

Interfaces torque sensors

Interfacial torque

Joint torques

Loading high torque

Loads torque

Magnetic torque

Maximum standard torque

Maximum torque

Mechanical Torque Measurements

Mechanical properties torque rheometry

Mechanical torque measurements, nematics

Microprocessor-controlled torque

Mixing torque

Molecular Field and Torques

Moment of Torque

Moment, Torque—Forces Acting at a Distance

Mooney torque peak

Motor Power and Torque

Motors accelerating torque

Motors direct torque

Motors torque

Nematic liquid crystal viscous torque

Opposing torque

Optical torque sensors

Parallel operation driving torques

Passive joint torque control

Passive joint torque control Equation

Poly torque

Potential of mean torque

Power Draw Or Torque Measurement

Procedure 3-4 Bolt Torque Required for Sealing Flanges

Quantum torque

Quasi-torque

Randomly fluctuating torque

Rate Limited by Discharge Temperature and Torque for Starch Extrusion

Reaction torque

Reduced torques

Rheology torque

Rheometers, torque measurement

Ribbon torque

Roll torque

Rolling friction torque

Running torque

Sandwich peel torque

Scale torque

Screw stripping torque

Screw torque speed

Self-aligning torque

Shaft Torque, Critical Speed, and Retrofitting

Shaft torque

Signal torque sensors

Simple Dewatering and Torque Scale-Up

Speed-torque

Speed-torque curves

Speed-torque tests

Stall torque

Starting torque

Steering, torque sensors

Stochastic torques

Strain gauges, torque

T Torque

TIME DEPENDENCE TORQUE

The Torque Balance Equation

Tool joints makeup torque

Torque

Torque Method

Torque Requirements

Torque balance

Torque breakdown

Torque calculations

Torque converter

Torque converter adjustable

Torque converter characteristics

Torque converter components

Torque converter operation

Torque converter power transmission)

Torque converter schematic

Torque dielectric

Torque drill collar

Torque elastic properties

Torque electric

Torque feedback system

Torque flexoelectric

Torque flow/viscosity

Torque fluid

Torque full-load

Torque generation

Torque imposed

Torque induction motors

Torque level

Torque lock nut

Torque locked-rotor

Torque magnetometry

Torque makeup

Torque measurement

Torque measurement strain gauges

Torque measurement transducers

Torque meter

Torque on a particle

Torque optical

Torque output

Torque patterns

Torque pendulum

Torque ratios

Torque rheological property

Torque rheometer test

Torque rheometers

Torque rheometry

Torque rotational viscosity

Torque sensors

Torque shaft design

Torque strength

Torque strength tests

Torque stress

Torque surface

Torque tensor

Torque test

Torque total surface

Torque transducers

Torque transmission

Torque values

Torque versus speed

Torque wrench

Torque, mean square

Torque, rotating sphere viscometer

Torque, suspensions

Torque-controlled adhesive anchors

Torque-limited drivers

Torque-time

Torque-time behaviour

Torque-time curve

Torque/tension method

Torqued cylinder apparatus

Torques electric field

Torques magnetic field

Torques molecular field

Torques, dipole

Torque—temperature curve

Transmitted torque

Turbine motor stall torque

Variable-torque rheometers

Variational Problem and Elastic Torques

Viscosity torque sensors

Viscous torque

Wire torque

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