Conventional Methods Of Conventional Ultrasonic Testing

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1. Introduction:

Conventional ultrasonic testing is a popular technique for inspecting defects among oil / gas pipeline, railroad automotive, etc. industries. Not only because it is a non-destructive testing method, but also it can provide high accuracy for detecting discontinuous and small defects in both surface and subsurface.

However, there are still some disadvantages of conventional ultrasonic testing that limit its applications. For instance, conventional ultrasonic testing is not ideal in detecting defects with materials in rough surface / irregular shape.

In this essay, firstly, I will discuss the principles of the conventional ultrasonic testing method, which includes illustrating the theories of (1) ultrasonic transduction (2) sound capture, and (3) ultrasonic testing data presentation. Following, some advantages and disadvantages in using conventional ultrasonic testing method will be addressed in Chapter 4. At last, I will address some real industrial examples toward using conventional ultrasonic testing method in Chapter 5.

2. Ultrasonic Transduction

Conventional ultrasonic testing method can be used in detecting materials with different thickness ranges by moderating different frequencies. For example, lower frequencies are able to penetrate deeper in materials, however the resolution will also be decreased. [1] B

2.1 Transaction Medium

In order to make sure sufficient ultrasonic energy can be penetrated into the testing materials, the tester can be
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