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BRIARCLIFF MANOR, N.Y. - Sept. 22, 2019 - PRLog -- Among all non-destructive testing methods, this method is the most convenient and economical, and is also a test method that must be performed before, during, and after all tests are performed. for a careful appearance inspection to see if the surface of the container is somewhat etched, thinned, deformed, cracked, and then Then determine if a subsequent non-destructive check is needed.

Visual inspection is divided into direct and indirect, the difference is:

Direct visual inspection: Direct visual inspection without interrupting the path between the subject and the eye.
Indirect visual inspection: use non-professional testing equipment such as cameras.

Ultrasonic detection

Ultrasonic detection refers to "detecting an object (internal) 以 with a low-energy, high-frequency ultrasonic wave."

In general, ultrasonic detection uses a frequency range from 1MHz to 25MHz. Basic equipment requires an electronic signal generator to transmit super-waves through the Transducer of Probe or search Unit, and then through the contact medium (Couplant) In the test piece, the ultrasonic wave will have more or less attenuation in the test piece. When passing to the interface, the ultrasonic wave may reflect or transmit. A visit to https://www.sipotek.net/custom-design/ will be perfect option here.

The Custom Design Visual Inspection Systems are to emit an ultrasonic pulse wave at a point on the object to be measured, and measure the time required to pass from this point to another point. Since the wave transmission speed is determined by the nature and quality of the medium, if the mass and wave transmission speed are known, the elastic properties can be evaluated.

Advantages of ultrasonic detection

1. A variety of materials can be used.

2. It can be used for internal flaw detection, thickness measurement and physical properties.

3. Detection speed is faster and more accurate.

4. The instrument is light and can maintain a permanent record.

5. Limitation of ultrasonic detection

6. The equipment is expensive.

7. Operation and interpretation are difficult and require experienced personnel.

8. It is subject to the limitations of the shape, structure and surface roughness of the components.

9. Coupling agent and reference standard block are required.

10. Small and thin components are difficult to detect.

Magnetic Particle Testing

Magnetic particle detection means "properly applying magnetic particles to the surface of the magnetized member to detect flaws near the surface of the object".

Since the object must be properly magnetized before it can be implemented, the magnetic particle detection is only applicable to the test piece of ferromagnetic material, such as carbon steel, etc.