What is magnification factor?

Abbreviation: MF. A quantitative expression of the degree of enlargement of an image in which the image size is divided by object size. In radiography, it is the ratio of the source-to-image-receptor distance to the source-to-object distance. See also: factor.

What is dynamic magnifier?

Magnification Factor or Dynamic Magnifier. It is the ratio of maximum displacement of the forced vibration (xmax) to the deflection due to the static force F (xo).

How do you calculate dynamic amplification factor?

Thus a dynamic amplification factor (DAF) is applied to the physical system so that the possibility of sling snap does not occur. This value of DAF can be obtained from the DNV code (DNV-RP-H103). DAF can be calculated by dividing the sum of the static and hydrodynamic forces.

What is value of magnification factor?

The value of deflection under the dynamic force divided by the deflection under the static type of force is called as the dynamic magnification factor. It magnifies the static response with help of factor and determine the equivalent dynamic response. …

What is dynamic magnification factor give expression also?

Dynamic magnification factor is defined as the ratio of the dynamic deflection at any time to the static deflection which would have resulted from the static application of the external load, which is used in specifying the load-time variation [1-3]. … The dynamic magnification factors were computed.

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How do you find magnification factor?

What do you mean by magnification factor in mechanical vibration?

The magnification factor, MF, is the ratio of the actual vibration amplitude (X)normalized by the displacement (X0). In all cases MF is a function of the frequency ratio, r.

What is amplification factor in vibration?

The dynamic amplification factor (DAF), which is defined as the ratio of the amplitude of the vibratory response to the static response, is normally used to depict the dynamic effect. For a single-degree-of-freedom system (SDOF) subjected to a sudden dynamic load, the maximum value of DAF is 2.

What is meant by dynamic amplifying?

Dynamic Amplification Factor (DAF) or Dynamic Increase Factor (DIF), is a dimensionless number which describes how many times the deflections or stresses should be multiplied to the deflections or stresses caused by the static loads when a dynamic load is applied on to a structure.

How do you calculate amplification factor?

When a voltage is supplied to the input of the amplifier circuit it is multiplied by the amplification factor and appears at the output. This amplification factor is obtained by dividing the output voltage by the input voltage.

What do you mean by amplification factor?

The amplification factor, also called gain , is the extent to which an analog amplifier boosts the strength of a signal . Amplification factors are usually expressed in terms of power . The decibel (dB), a logarithmic unit, is the most common way of quantifying the gain of an amplifier.

How do you calculate dynamic load?

Calculate the vehicle’s rate of acceleration. Sixty mph equates to 88 feet-per-second, divided by 7.2 seconds, yielding 12.22 feet-per-sec^2. Calculate the dynamic load to the drive wheels by solving the F = m x a formula, which is Newton’s Second Law of Physics.

What is the value of magnification factor when there is no damping?

ζ=0 The curves show that as the damping ratio increases, the maximum value of magnification factor decreases. When there is no damping i.e. (ζ=0), it reaches to infinity at the resonance i.e. when ω/ω nf = 1.

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What does magnification depend on?

The image is located on the same side of the lens as the object, and it appears upright (see Figure 1). The image is a virtual image and appears as if it were 10 inches from the eye, similar to the functioning of a simple magnifying glass; the magnification factor depends on the curvature of the lens.

What does zero frequency deflection mean?

Zero frequency deflection is the deflection under the action of impressed force. Since X = F /k , also called static deflection A is also referred as X max. DYNAMICS OF MACHINERY. RESPONSE TO PERIODIC FORCING. Show that amplitude of forced vibrations due to unbalanced rotating mass is constant at high speeds.

What forced vibration?

Forced vibration is a type of vibration in which a force is repeatedly applied to a mechanical system. … Forced vibration is when an alternating force or motion is applied to a mechanical system, for example when a washing machine shakes due to an imbalance.

What are the types of vibration?

A vibrating motion can be oscillating, reciprocating, or periodic. Vibration can also be either harmonic or random. Harmonic vibration occurs when a vibration’s frequency and magnitude are constant. A vibration is random when the frequency and magnitude vary with time.

What is magnification factor in radiography?

Magnification in radiography is defined as (Image Size/Object Size) and is equal to the (SID/SOD) which is the source to image distance divided by the source to object distance.

What is the formula for the magnification factor using image and object size?

An object’s magnification is generally given by the equation M = (hi/ho) = -(di/do), where M = magnification, hi = image height, ho = object height, and di and do = image and object distance.

Which type of vibration are also known as transient vibration?

Q. Which type of vibrations are also known as transient vibrations?
B. Damped vibrations
C. Torsional vibrations
D. Transverse vibrations
Answer» b. Damped vibrations

What is transient vibration?

A transient vibration is one that dies away with time due to energy dissipation. Usually, there is some initial disturbance and following this the system vibrates without any further input. This is called transient vibration.

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What is meant by frequency ratio?

OECD Statistics. Definition: A frequency ratio is the proportion of national tariff lines that are affected by a particular non- tariff barrier or by a specified group of non tariff barriers, irrespective of whether the products affected are actually imported.

What is a dynamic amplification factor in vibration?

The dynamic amplification factor (DAF), which is defined as the ratio of the amplitude of the vibratory response to the static response, is normally used to depict the dynamic effect. For a single-degree-of-freedom system (SDOF) subjected to a sudden dynamic load, the maximum value of DAF is 2.

What is dynamic load factor?

The dynamic load factor is a non-dimensional factor by which the static displacement (Xg) produced by a reference load P applied as a static load should be multiplied by in order to obtain the dynamic displacement (^ ) if P is a function of time.

What is dynamic factor in lifting?

A dynamic factor is the value by which the static load is multiplied to account for the dynamic effects of crane and load motion. … This factor depends on the magnitude of the load lifted, the wave parameters and the crane stiffness.

What is an example of a dynamic load?

Dynamic loads include people, wind, waves, traffic, earthquakes, and blasts. … This action can be in the form of load due to the weight of things such as people, furniture, wind, snow, etc. or some other kind of excitation such as an earthquake, shaking of the ground due to a blast nearby, etc.

What is DAF force?

The United States Department of the Air Force (DAF) is one of the three military departments within the Department of Defense of the United States of America. … The Secretary of the Air Force’s principal deputy is the Under Secretary of the Air Force (SAF/US).

What is DAF offshore?

In this table, a dynamic amplification factor (DAF) means a value of maximum dynamic load divided by static load. This static load means the weight of the equipment in the air.