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VIDAL NDT is a qualitatively different NDT training institute by offering broad range of training testing services in Vijayawada floated by qualified professionals. We foster our students by hostile training methods by experts and with the most effective resources and further to enrich them with various career opportunities in both India and abroad. We are committed to quality training and reliable NDT inspections. We have been offering training in area of NDT by providing critical NDT solutions to many of our clients.

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about us


VIDAL NDT is a qualitatively different NDT training institute by offering broad

range of training testing services in Vijayawada floated by qualified professionals. We

foster our students by hostile training methods by experts and with the most effective

resources and further to enrich them with various career opportunities in both India

and abroad. We are committed to quality training and reliable NDT inspections. We

have been offering training in area of NDT by providing critical NDT solutions to many

of our clients.

We follow RRR strategy for 100% satisfaction and benefit

of the students.

Requisite We requisite through college seminars, demos and awareness programs

Rearrange We rearrange students by our way of teaching though our courses.

Recruit Finally we prepare the students for company recruitments



ndt level 1 2 courses 1


Nondestructive testing or non-destructive testing (NDT) is a wide group of analysis

techniques used in science and technology industry to evaluate the properties of a material,

component or system without causing damage. Here the NDT Courses.


Ultrasonic testing is a method of characterizing the thickness or internal structure of a test

piece using high frequency sound waves to find

the weld and base metal defects.

Ultrasonic inspection can be used for flaw

detection/evaluation, dimensional measurements,

material characterization, and more. Ultrasonic

testing can remotely generate ultrasound in

materials without contact, leaves a very small

footprint so that it can be applied to irregular

geometries, and allows access to restricted areas

via fiber optics. It is used as non-contact and remote, allowing inspection of samples at high

temperature, which can be seen during welding with restricted access. It enables inspection of small

and complex geometries and high frequency capable of detecting very small flaws, Laser beam

scanning method for full coverage of inspection samples…



2 radiographic testing rt


In NDT, radiography is one of the most important and widely used methods. Radiographic

testing (RT) offers several advantages over other NDT methods, however, one of its major

disadvantages is the health risk associated with the radiation. This method of weld testing makes use

of X-rays, produced by an X-ray tube, or gamma rays, produced by a radioactive isotope. The basic

principle of radiographic inspection of welds is the same as that for medical radiography. Penetrating

radiation is passed through a solid object, in this case a weld rather that part of the human body, onto

a photographic film, resulting in

an image of the object’s internal

structure being deposited on the

film. The amount of energy

absorbed by the object depends

on its thickness and density.

Energy not absorbed by

the object will cause exposure of

the radiographic film. These areas

will be dark when the film is

developed. Areas of the film exposed to less energy remain lighter. Therefore, areas of the object

where the thickness has been changed by discontinuities, such as porosity or cracks, will appear as

dark outlines on the film. Inclusions of low density, such as slag, will appear as dark areas on the film

while inclusions of high density, such as tungsten, will appear as light areas. All discontinuities are

detected by viewing shape and variation in density of the processed film.



3 magnetic particle testing magnetic particle


Magnetic particle examination (MT) is a very popular, low-cost method to perform

nondestructive techniques of examination of ferromagnetic material. Magnetic Particle Testing

Examination is accomplished by inducing a magnetic field into a ferromagnetic material and applying

iron particles to the surface of the item being examined. Ferromagnetic is defined in ASME Section V

as “a term applied to materials that can be magnetizedor strongly attracted by a magnetic field.” MT

is an NDE method that checks for surface discontinuities but can also reveal discontinuities slightly

below the surface.

Surface and near-surface discontinuities affect the flow of the magnetic field within the part causing

the applied particles to gather at locations of flux leakage, thus producing a visible indication of the

irregularity on the surface of the material. By the 1930s, MT was quickly replacing the oil and whiting

method of NDE (liquid penetrant [PT]) in the railroad industry. It was quicker and did not leave

behind the white powder that required clean-up. After an MT evaluation, only iron powder was left

behind, which could easily fall off the part or be blown away.



4 penetrant testing pt


out of a colored or fluorescent dye from the flaw. The technique is based on the ability of a liquid to

be drawn into a “clean” surface breaking flaw by capillary action. After a period called the “dwell,”

excess surface penetrant is removed, and a developer applied. This acts as a blotter. It draws the

penetrant from the flaw to reveal its presence. Colored (contrast) penetrants require good white

light while fluorescent penetrants need to be used in darkened conditions with an ultraviolet “black


Liquid penetrant inspection is a method that is used to reveal surface breaking flaws by bleed

The advantage that a liquid penetrant inspection (LPI) offers over an unaided visual inspection

is that it makes defects easier to see for the inspector. There are basically two ways that a penetrant

inspection process makes flaws more easily seen. First, LPI produces a flaw indication that is much

larger and easier for the eye to detect than the flaw itself. Many flaws are so small or narrow that

they are undetectable by the unaided eye. Due to the physical features of the eye, there is a threshold

below which objects cannot be resolved. This threshold of visual acuity is around 0.003 inch for a

person with 20/20 vision.



5 radiography film interpretation


Radiography film interpretation test is basically of recording of varying degree of absorption of

penetrating radiation by an object. In conventional film radiography, this varying of absorption

produces a latent image of object being examined on the film. The film is chemically processed,

transforming the latent image into

permanent shadow image of internal and

external condition of the project. The

processed film is called radiograph. The

radiograph can be interpreted and thee

integrity of the object can be evaluated. The

major objective of radiographic testing of

castings is the disclosure of defects that

adversely affect the strength of the product.

Castings are a product form that often

receive radiographic inspection since many

of the defects produced by the casting process are volumetric in nature, and are thus relatively easy

to detect with this method. These discontinuities of course, are related to casting process

deficiencies, which, if properly understood, can lead to accurate accept-reject decisions as well as to

suitable corrective measures. Since different types and sizes of defects have different effects of the

performance of the casting, it is important that the radiographer can identify the type and size of the

defects. ASTM E155, Standard for Radiographs of castings has been produced to help the

radiographer make a better assessment of the defects found in components. The castings used to

produce the standard radiographs have been destructively analyzed to confirm the size and type of

discontinuities present.



6 visual testing vt


Visual Examination is the oldest and most common non-destructive testing method which is

an effective way to recognize surface imperfections that could adversely affect a part or component.

Visual Examiners use knowledge of how a part is manufactured, the function of the human eye,

lighting requirements, and precise measuring tools to evaluate materials.

Computer controlled camera systems and optical aids such as borescopes may also be used to

recognize and measure features of a component. In visual testing the product forms including castings,

forgings, machined components and weld elements etc. are tested.

Visual inspection is the process of examination and evaluation of systems and components by

use of human sensory systems aided only by mechanical enhancements to sensory input such as

magnifiers, dental picks, stethoscopes, and the like. The inspection process may be done using such

behaviors as looking, listening, feeling, smelling, shaking, and twisting. “It includes a cognitive

component wherein observations are correlated with knowledge of structure and with descriptions

and diagrams from service literature.”



head office


40-1-100, 4th Floor,

HRT Plaza, Bandar Road,

Benz Circle, Vijayawada,


Andhra Pradesh 520010.


D.No-304, 3rd floor, Gyan arcade,


Beside Seshmahal Cinema Theater,

Ammerpet Hyderabad, A.P, India

TECHNICAL HEAD: 888605-3111

MANAGING DIRECTOR: 888605-4111 (For Business)

HR MANAGER: 888605-2111

Mail Us: info@vidalndt.com