Facts About NDT Training

Now a days we came across hearing plenty of NDT training centres are offering NDT level 2 in Basic NDT methods like RT, UT, MT, PT etc within a duration of 15 days on 2- 4 hours training session per day.We are posting this article here for making aware the general public about the facts on what's NDT and How can be it acquired.Does'nt matter which training centre major factor shall be is there worth for what you pay and will it be recognized in industry and also will it be useful for the certified person because it's your hard earned Money is paying for each and every training programNormal NDT programs offered by Institutions are based on ASNT SNT 1A practice standard and which are accepted world wide if it's properly delivered.As per ASNT published  minimum training requirement each individual candidate should get a Minimum training hours for practical and theory for each method Eg: Ultraosonic Testing direct level 2 requires a Minimum Training hours of 120 for progr…

What is the Plate Lamination Defect?

Plate lamination defect is one of the primary processing discontinuity that originates during hot or cold forming processes and is considered as a serious metal plate defect. All the metals contain discontinuities at micro and macro levels. These discontinuities, when above the acceptance level, are termed as defects. The discontinuities in metal are classified according to the stage of manufacturing in which they initiate. Plate lamination defect can be defined as flat and thin subsurface separations present inside metal plate, parallel to the surface of the plates. The sources of this defect are inherent discontinuities present in metal such as inclusion and porosity, which are flattened during the rolling process. Carbon Steel Plate Lamination Defect & ReasonsA carbon steel plate is produced by the process of hot or cold rolling a thick slab. During this process, carbon steel may pass through the rollers many times to achieve the desired thickness.Each pass results in an increa…

What is a Square Wave in Ultrasonic Testing

Square wave is a shape of the signal
In the UT instruments the shape of firing pulse may be either spike or unipolar square wave or bipolar square wave; for the square wave firing pulse the half wave duration is tunable whilst the rising and falling edges should be kept as short as possible; also the stability of the amplitude should be provided within entire half wave duration. The video below shows the 3 types of firing pulse noted above - at the time of capturing of the video the standard load of 50 Ohm was connected to the pulser terminal, not the probe the probe is connected the efficiency of the spike / unipolar and bipolar square wave may be understood based on the observation of the echo returned from the material - this is illustrated by the video below half wave duration around 1/(2F) in the firing pulse (pulse Width) provides the maximal efficiency (F is the actual …

Comparison of the use of rutile and cellulosic electrodes Knowledge Sharing From Decibel.

Comparison of the use of rutile and cellulosic electrodes Types of electrodes and their compositions Many types of manual metal arc (MMA) electrodes are available on the market. Depending on the main constituent of their flux, they are grouped into three categories: cellulosic, rutile and basic. All electrodes consist of a cored wire (typically 2.5–6mm diameter) coated by a flux. The core wire is generally made of low-quality riming steel and the fluxes contain many elements allowing refinement of the weld macrostructure. The composition of the flux impacts the electrodes’ behaviour. The main constituents of the different types of electrodes and the shielding gas created for each are described in Table 1 (Bowniszewski, 1979). Table 1 Main constituent of the three possible types of electrodes and shielding gas created by its combustion. Electrode typeMain constituentShielding gas createdRutileTitania (TiO2)Mainly CO2BasicCalcium compoundsMainly CO2CellulosicCelluloseHydrogen + CO2
MMA e…

Tired of Removing Paint to Inspect Welds?

Removing Paint is Time Consuming and ExpensiveFor decades, legacy NDT methods, such as penetrant and magnetic particle inspection, required that paint be removed from parts before they could be inspected. The paint was often removed using harsh chemicals. Over time, increasingly strict government regulations about chemical safety and waste treatment have caused the cost of paint removal to rise dramatically. As the cost of paint removal increases so does the overall cost of inspection.Inspect Through Paint with Dynamic Lift-Off Compensation TechnologyThe use of a flexible PCB probe with cross-wound coil technology combined with dynamic lift-off compensation makes it possible to detect surface-breaking cracks through paint, resulting in significant time and cost savings.The principle of dynamic lift-off compensation.
Our MagnaFORM™ probe features dynamic lift-off compensation and helps make weld inspection fast and efficient. The dynamic lift-off compensation helps the probe maintain se…

Applications are Flooding for the NDT Level 2 Shutdown Post for Saudi Arabia

Applications are Flooding for the NDT Level 2 Shutdown Post for Saudi Arabia.

It's Really Painful that plenty of them Claiming years experiencing doesn't know how to calibrate equipment's and whats the basic material configuration. ( Words by the Interview Panel).

Thanking our Hard working Tutors, not receiving any such comments about any single students from Decibel.

Management can feel proud about the Decibel Team for their tiring service for excellence.

ASNT NDT Level 3 Preparatory Classes at Decibel Pattambi, Kerala, India

Refresher/ Preparatory Classes for ASNT NDT Level 3 Examination are Conducted at Decibel Pattambi in Regular Schedules. Which are considered to be very helpful for candidates preparing for NDT Level 3 Examination.

According to the words of the participants "Detailed Technological Training and Practical Integration along with Examination based points are actually a great support and positive way of learning"

Our Tutors Not only concentrate on Just Teaching What's for Exam it's really beyond that and we strive to Develop a Quality Level 3 instead of a Certified Level 3 Person.

The Codes & Ethics of Level 3 is an essential topic which we used to taught during the session as a part of commitment to the society.

Sonotron NDT presents on-the-fly defect pattern analysis whilst performing S-Scan material coverage

Sometime it may occur that the dangerous defects do not return the echoes exceeding the threshold level and may not be rejected based on the echo-amplitude evaluation. 
On the other hand the shape of the inhomogeneity on the cross-sectional image obtained through S-Scan coverage and the echo dynamic analysis may lead to suspecting a crack and rejecting the defect Sonotron NDT‘s portable ultrasonic PA instruments ISONIC 3510, ISONIC 2010, and ISONIC 2009 are featured with the ability of on-the-fly defect pattern analysis whilst observing the live cross-sectional image of the suspected section of the material.

The pattern analysis is performed through on-the-fly embedding and implementing additional focal laws into the running sequence with the purpose of receiving and analyzing of complementary echoes from the insonified inhomogeneity.

The said complementary signals carry the additional data required for identifying the defect under evaluation.

The instrument screen video illustrates the p…

PCN Level 2 in PAUT & TOFD Classes at Regular Session

Decibel's PCN Training & Examination Division will be offering Regular PAUT & TOFD Session from March 2017 Onwards at a most competitive pricing.

Special 2017 Pricing will be applicable for Pre-Booking Candidates for PAUT & TOFD.

Interested Candidates may Contact us at the Earliest

How You can weld nickel aluminium bronzes?

How You can weld nickel aluminium bronzes?

Aluminium bronzes are copper alloys containing, amongst other additions, up to 14% by weight of aluminium. Nickel aluminium bronzes are a subset aluminium bronzes which also contain nickel and often iron and manganese. Nickel aluminium bronzes are generally stronger than other aluminium bronzes and possess a two phase (duplex) microstructure.
Nickel aluminium bronzes possess an alumina surface oxide that gives good corrosion resistance, however, this oxide can cause inclusions and other flaws during welding, if entrapped in the weld metal. Interpass and preweld cleaning must be employed to avoid this. As with all welding, general surface cleanliness will improve the quality of the weld.
All aluminium and nickel aluminium bronzes undergo metallurgical changes in the HAZ and weld areas following welding which may lead to deleterious effects on the corrosion properties of the component. Depending on the severity of the service conditions, a postwel…

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Corrosion and erosion is a major issue facing asset management across most plants. The major oil and gas companies operating in the UK have worked alongside BINDT (British institute of Non-Destructive Testing) in accordance with PCN ISI GEN Appendix A to develop a training program to train technicians with a view to measuring the competency of personnel working in these areas on plant assets. This course is applicable to all personnel working in plant integrity across multiple industries.

Our IMechE Engineering Training Solutions have been cooperating in the development to produce a training program where certification will be issued to technicians who attend the course and pass the subsequent examinations.

The course will focus on:

- Corrosion and erosion mechanisms in…