non-destructive testing

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NON DESTRUCTIVE TESTING

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NON DESTRUCTIVE TESTING

INTRODUCTION:It is a Non (physical, deep) Penetrating testing techniques of the material used in the science of maintenance engineering to determine the composition, characteristics, properties and internal faults of the material or working device’s components without interfering into material or working device and their on going work.

NON DESTRUCTIVE TESTING

MOST COMMON METHODS OF “NDT” : visual testing: It is the most common technique which

used to see crack inside or surface ofthe material. In classical time human eye is used as a driving force . But now a days technologically is growing faster so that’s why there are several equipments used for this testing i-e.

1.magnifying glass 2.Microscope (optical & electronic) 3. videoscope

NON DESTRUCTIVE TESTING

Magnifying glassVIDEOSCOPE

Microscope (optical) Microscope (electronic)

NON DESTRUCTIVE TESTING Dye Penetrating testing: it is most commonly used “NDT” testing

used for crack at inside of the material. It is mostly applied on the smooth surface.

METHOD: There are three major liquid are used in

this testing i-e. 1.cleaner 2. penetrator 3. developer

NON DESTRUCTIVE TESTING

1.cleaner: used for cleaning the extra material from the required place to do test2. penetrator: it should adhesive in nature to penetrate inside the cracks3. developer: it absorb the penetrator from surface but not from pitting and erosive place just only from surface

NON DESTRUCTIVE TESTING

NON DESTRUCTIVE TESTING

NON DESTRUCTIVE TESTING

NON DESTRUCTIVE TESTING

NON DESTRUCTIVE TESTING

ULTRA-SONIC TESTING: Ultrasonic Testing (UT) uses high

frequency sound energy to conduct examinations and make measurements. Ultrasonic inspection can be used for flaw detection/evaluation, dimensional measurements, material characterization, e.t.c.

NON DESTRUCTIVE TESTING A typical UT inspection system consists

of 3 units. Pulser : A pulser is an electronic device

that can produce high voltage electrical pulses.

transducer: it generates high frequency ultrasonic energy.

Receiver: a receiver receive signals and displays it to on the screen

NON DESTRUCTIVE TESTING

NON DESTRUCTIVE TESTING ADAVANTAGES OF ULTRA -SONIC TESTING:

It is sensitive to both surface and subsurface discontinuities. The depth of penetration for flaw detection or measurement

is superior to other NDT methods. Only single-sided access is needed when the pulse-echo

technique is used. It is highly accurate in determining reflector position and

estimating size and shape. Minimal part preparation is required. Electronic equipment provides instantaneous results. Detailed images can be produced with automated systems. It has other uses, such as thickness measurement, in

addition to flaw detection.

NON DESTRUCTIVE TESTING RADIOGRAPHY TESTING: It is a method for testing hidden flaw by

using the ability of the short wave length

(electromagnetic wave) or Photons energy

NON DESTRUCTIVE TESTING

NON DESTRUCTIVE TESTING

NON DESTRUCTIVE TESTING

NON DESTRUCTIVE TESTING

NON DESTRUCTIVE TESTING