Non-Destructive Testing

Ultrasonic testing (UT) is one of the non-destructive testing methods frequently used in the inspection and inspection of pressure vessels and installations. This method is used to control the material to be controlled with very short pulses and waves using various frequency values. In this way, discontinuities on the surface or inside of the material can be detected. In general, the ultrasonic examination method is used to determine the thickness of the materials. For example, this method is used to understand the dimensions of the paint on the material or the extent of corrosion in the pipe.

Ultrasonic testing is generally applied on metals and alloys. It can also be applied to composite concrete and wood materials. This method, which does not cause any change in the structure of the substance, is used in many sectors including automotive, aviation and other transportation sectors.

Briefly, ultrasonic examination is an effective method for controlling discontinuities in the material with the help of high frequency sound waves. The operating principle of this system is based on the reflection of high frequency sound waves sent into the material in case of an obstacle. Depending on the collision angle, the reflected signals are converted into electrical signals and monitored on the display of the device. In this way, the distance of the discontinuity to the surface, or the depth and size are determined.

In addition to detection of defects in material, thickness measurements and material classification can be done with this method.

Our company is non-destructive also provides ultrasonic inspection services. In these studies, relevant legal regulations, standards and test methods published by local and foreign organizations are complied with. A few standards are based on:

• TS EN ISO 5817 Welding - Steel, nickel, titanium and their alloys melting welded (not including bundle welding) - Quality levels for defects)
• TS EN ISO 11666 Non-destructive testing of sources - Ultrasonic inspection - Acceptance levels
• TS EN ISO 23279 Non-destructive testing of sources - Ultrasonic inspection - Characterization of symptoms in sources
• TS EN ISO 17640 Non-destructive testing of sources - Ultrasonic inspection - Techniques, test limits and evaluation
• TS EN 12680-1 Casting - Ultrasonic inspection - Part 1: Steel for general purpose
• TS EN 10228-3 Non-destructive testing of forged steels - Part 3: Ultrasonic inspection of ferritic or martensitic forging steels
• TS EN 14127: 2011 Non-destructive testing - Ultrasonic thickness measurement

Penetrant testing (PT), which is one of the non-destructive testing methods, is an inspection method that is made visible with the help of a number of chemical substances, especially in pressure vessels, defects in material and welding surfaces. This method is very practical and useful method. Penetrant inspection method only detects defects that occur on the outer surfaces of the material. Therefore, this method is not suitable for porous materials.

The first step in penetrant inspection is pre-cleaning. Foreign materials such as oil, dirt and rust on the surface of the material should be cleaned. Then the penetrant liquid is sprayed onto the cleaned surface of the material. In this way, cracks on the surface are filled. This red liquid (penetrant liquid) is then cleaned. In the final step, the material is inspected visually or under black light.

Briefly, the liquid penetrant method is a non-destructive inspection method which makes discontinuities on the surface of the material visible. The basic principle of this method is that penetrating liquid, which is a fluid, penetrates into cracks in the surface of the material.

The Regulation on Health and Safety Conditions in the Use of Work Equipment has been issued in order to regulate the minimum requirements for the health and safety of work equipment used in workplaces. Details of the Annex to the Regulation on Maintenance, Repair and Periodic Inspections (Annex 3) are provided.

Our company is non-destructive within the framework of inspection services, also provides penetrant inspection services. In these studies, relevant legal regulations, standards and test methods published by local and foreign organizations are complied with. A few standards are based on:

• TS EN ISO 5817 Welding - Steel, nickel, titanium and their alloys melting welded (not including bundle welding) - Quality levels for defects)
• TS EN ISO 3452-1 Non-destructive testing - Penetrant inspection - Part 1: General requirements
• TS EN ISO 3452-2 Non-destructive testing - Penetrant inspection - Section 2: Test of penetrants
• TS EN ISO 23277 Non-destructive testing of welds - Penetrant testing of welds - Acceptance levels
• TS EN 1371-1 Casting - Liquid penetrant inspection - Part 1: Sand, non-pressure and low pressure die casting
• TS EN 1371-2 Castings - Liquid penetrant inspection - Part 2: Precision castings
• TS EN 10228-2 Non-destructive testing of forged steels - Part 2: Penetrant inspection

Another non-destructive testing method is magnetic particle testing (MT). This method is only applied for the examination of magnetizable (ferromagnetic) materials such as iron, cobalt and nickel. The material to be examined is turned into a magnet. If the magnetic field is pulled over the soft iron, the magnetization suddenly disappears and the material returns. However, if the magnetic field is withdrawn from carbon steels, this feature may continue for a while. Magnetic field method transverse errors, electric field method longitudinal errors are detected.

The basic principle of the magnetic particle inspection method is to generate leakage magnetic current in the discontinuities of the surface of the magnetizable materials and to collect the iron powders sprayed on the surface of the material over these cracks in the material. In general, discontinuities at or just below the surface of the material can be detected by this method.

The Regulation on the Health and Safety Conditions in the Use of Work Equipment issued by the Ministry of Labor and Social Security was issued to regulate the minimum requirements for the health and safety of work equipment used in workplaces. Details of the Annex to the Regulation on Maintenance, Repair and Periodic Inspections (Annex 3) are provided.

Our company is non-destructive within the framework of inspection services, also provides inspection services with magnetic particles. In these studies, relevant legal regulations, standards and test methods published by local and foreign organizations are complied with. A few standards are based on:

• TS EN ISO 5817 Welding - Steel, nickel, titanium and their alloys melting welded (not including bundle welding) - Quality levels for defects)
• TS EN ISO 17638 Non-destructive testing of welds - Magnetic particle inspection
• TS EN ISO 23278 Resources non-destructive testing - Magnetic particle inspection of welds - Acceptance levels
• TS EN ISO 9934-1 Non-destructive testing - Magnetic particle inspection - Part 1: General principles
• TS EN ISO 9934-2 Non-destructive testing - Magnetic particle inspection - Section 2: Detection media
• TS EN 10228-1 Non-destructive testing of forged steels - Part 1: Magnetic particle inspection
• TS EN 1369 Castings - Magnetic particle inspection
• TS EN ISO 17635 Non-destructive testing of welds - General requirements for metallic materials

Of the non-destructive testing methods, the simplest and most easily applied visual inspection method (visual testing, VT). Non-destructive testing methods are applied without damaging the properties of the material being used and without damaging the material. In this respect, visual inspection does not detect the inside of the material, it is only a superficial method. However, many non-destructive testing methods primarily require visual inspection and recording of the findings.

Mainly, the visual inspection method examines discontinuities, noticeable structural defects and details that may adversely affect the quality of the products under inspection and inspection. In these studies, a number of auxiliary optical devices such as magnifiers, endoscopes or videoscopes are used depending on the accessibility of inspection surfaces. But it is not a necessity. Visual inspection or visual inspection is generally performed mechanically and optically.

This method can be applied to all metallic or non-metallic materials. When applying this method, the surface should be able to show the best possible defects. Therefore, it is not desirable to clean the surface before inspection. However, the environment should be bright enough.

The aim of the Regulation on Health and Safety Conditions in the Use of Work Equipment is to regulate the minimum requirements for the health and safety of work equipment used in the workplace. Details of the Annex to the Regulation on Maintenance, Repair and Periodic Inspections (Annex 3) are provided. Accordingly, tanks and tanks containing hazardous liquids, which are corrosive or harmful to health, must be inspected and inspected annually by non-destructive testing methods unless otherwise specified in the relevant standards.

Our company is non-destructive visual inspection services within the framework of inspection services. In these studies, relevant legal regulations, standards and test methods published by local and foreign organizations are complied with. A few standards are based on:

• TS EN 13018 Non-destructive testing - Visual inspection - General rules
• TS EN 13927 Nondestructive testing - Visual inspection - Equipment
• TS EN ISO 17637 Non-destructive testing of fusion welds - Visual inspection of fusion welded joints
• TS EN ISO 17635 Non-destructive testing of welds - General requirements for metallic materials
• TS ISO 3058 Nondestructive testing - Visual inspection tools - Selection of low-magnification tools