Take A Free ASNT NDT AE Level 3 Exam Practice Test – Quiz Course

Here you can take a free ASNT NDT AE Level 3 Exam Practice Test with the latest Acoustic Emission Testing Method Questions and Answers.

1.

Yielding is a common source of acoustic emission in metals. At what stress levels do significant emissions generally begin?

 
 
 
 

2.

In order to use the signal-amplitude measurement method to locate a continuous signal source, which of the following should be known?

 
 
 
 

3.

Thermal stress can be used to stimulate acoustic emission. A round, solid metallic object is heated and then immersed in a tank of cold water. The stresses in the first few seconds will be:

 
 
 
 

4.

The phrase “stress intensity factor” refers to the:

 
 
 
 

5.

The hoop stress in a thin-walled pressure vessel is given by prit, where p is the internal pressure, r is the radius of the vessel, and t is the wall thickness. The axial stress is:

 
 
 
 

6.

Which of the following can be used to measure the operating characteristics of acoustic emission instrumentation?

 
 
 
 

7.

Conventional source location, using time-of-arrival and triangulation, has proven to be unsatisfactory for fiber-reinforced (FRP) equipment. Which item listed below is not one of the three main problems with source location in FRP equipment?

 
 
 
 

8.

What are the main components of the primary calibration system described in ASTM E 1106?

 
 
 
 

9.

What type of wave is considered for primary calibration?

 
 
 
 

10.

During primary calibration, the standard transducer and the device to be calibrated are placed:

 
 
 
 

11.

During primary calibration, a transfer block fabricated from lower-density material will result in:

 
 
 
 

12.

The reference sensor used for secondary calibration is:

 
 
 
 

13.

For a secondary calibration system per ASTM E 1106, the following two things must be demonstrated

 
 
 
 

14.

For a secondary calibration system per ASTM E 1106, the following two things must be demonstrated

 
 
 
 

15.

During continuous monitoring of pressure boundaries, stable flaw growth is indicated by:

 
 
 
 

16.

How is the dynamic range (DR) in an AE system’s electronics determined?

 
 
 
 

17.

Where is a system’s noise voltage (rms-noise voltage) measured?

 
 
 
 

18.

In using pencil lead breaks to generate AE signals, which of the following is NOT a recommendation to keep the sources as repeatable as possible?

 
 
 
 

19.

What properties of an ultrasonic transducer are preferred when using it to check the reproducibility of an AE sensor?

 
 
 
 

20.

Hold Periods at high during fiberglass reinforced pressure (FRP) vessel examinations using ASME Article II are necessary to:

 
 
 
 

21.

In acoustic emission testing per ASME Section V, Article 11, sensor spacing on fiberglass-reinforced pressure (FRP) pressure vessels in governed by:

 
 
 
 

22.

How can an examiner be assured that proper contact has been made between the sensor and the vessel?

 
 
 
 

23.

The source of the energy of the acoustic emission wave during crack growth is the:

 
 
 
 

24.

Which of the following can be a significant source of background noise?

 
 
 
 

25.

The elastic energy that is released by materials when they undergo deformation is called:

 
 
 
 

26.

One of the two major differences in the acoustic emission method from other forms of NDT is that:

 
 
 
 

27.

One advantage of using acoustic emission over other forms of NDT is that acoustic emission can:

 
 
 
 

28.

During loading, a metallic structure emits throughout the test period. When the load is reduced and then reapplied, no emissions are noted until the previous stress level was exceeded. This phenomenon is an example of:

 
 
 
 

29.

The founder of modern acoustic emission technology was:

 
 
 
 

30.

The test most often performed on a structure to determine maximum sensor spacing is called:

 
 
 
 

31.

The use of a couplant between the acoustic emission sensor and the surface of the material being tested is to provide:

 
 
 
 

32.

During a pressure vessel test, there is a rapidly (exponentially) increasing count rate. There are several possible causes. The operator’sfirst priority is to examine the possibility that:

 
 
 
 

33.

In order for an acoustic emission (AE) system to detect an active AE source in a material, the AE sensor must be placed:

 
 
 
 

34.

Which of the following is measured in meters per second (m/s)?

 
 
 
 

35.

A sensor is positioned 3 m form an acoustic emission (AE) source. If a particular component of the AE wave travels at 3000 m/s, how long will it take this component to travel from source to sensor?

 
 
 
 

36.

One of the major difference is the acoustic emission NDT method compared to most other NDT methods is that:

 
 
 
 

37.

Which of the following facilitates the transmission of acoustic waves to a typical sensor?

 
 
 
 

38.

Of the following components, which one is A not considered to be part of a typical acoustic emission sensor?

 
 
 
 

39.

When performing source location, which of the following most directly affects the accuracy of computed location?

 
 
 
 

40.

In acoustic emission testing of fiberglass-reinforced pressure (FRP) tanks and pressure vessels. significant activity on low frequency sensors and very little activity on high frequency sensors normally indicates:

 
 
 
 

41.

In acoustic emission testing of fiberglass-reinforced pressure (FRP) tanks and pressure vessels, low frequency sensors are used for:

 
 
 
 

42.

Which of the following factors tend to increase the amplitude of the acoustic emission response?

 
 
 
 

43.

One of the two major differences in the acoustic emission method from other forms of NOT is that:

 
 
 
 

44.

One advantage of using acoustic emission over other forms of NOT is that acoustic emission can:

 
 
 
 

45.

Which of the following facilitates the transmission of acoustic waves into a typical sensor?

 
 
 
 

46.

In what acoustic frequency range works AE testing usually?

 
 
 
 

47.

What generates the acoustic waves?

 
 
 
 

48.

How many transducers are used to record the acoustic waves?

 
 
 
 

49.

What is the Kaiser effect?

 
 
 
 

50.

What kind of signal is generated by a crack?

 
 
 
 

51.

What did Hsu-Nielsen invent?

 
 
 
 

52.

What effect appears first when loading a material?

 
 
 
 

53.

What is a guard sensor?

 
 
 
 

54.

What can AE not be used for?

 
 
 
 

55.

What is an important wave mode in AE testing?

 
 
 
 

56.

A qualitative description of the sustained signal level produced by rapidly occurring acoustic emission events is the accepted definition for:

 
 
 
 

Question 1 of 56

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Take A Free ASNT NDT AE Level 3 Exam Practice Test – Quiz Course

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  • Roles and Safety/Health of Technicians Involved in Non-destructive Testing
  • Principles of the Acoustic Emission (AE) Method and Signal Processing
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