NDT: Advantages and Disadvantages Quiz

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Questions and Answers

What type of defects can ultrasond transmission thickness measurement detect?

Porosity, surface roughness, coating thickness

Cracks, delaminations, shrinkage cavities (correct)

Corrosion, wear, oxidation

Color defects, weld discontinuities, hardness variations

What is one of the advantages of ultrasond transmission thickness measurement?

Requires radiation for operation

Can detect a wide variety of defects (correct)

Can only determine the depth of defects

Cannot estimate the size of defects

What type of materials can pose problems for ultrasond transmission thickness measurement?

Materials with small grain sizes

Highly conductive materials

Materials with low porosity

High porous materials (correct)

Why is inspection of thin thicknesses difficult with ultrasond transmission measurement?

The signals get absorbed too quickly in thin materials Signup and view all the answers

Which of the following is a limitation of ultrasond transmission thickness measurement?

Has problems with big grain size materials Signup and view all the answers

What advantage does ultrasond transmission thickness measurement provide when examining samples with simple geometries?

Is able to examine samples quickly and efficiently Signup and view all the answers

What type of defects can NDT detect?

Physical defects Signup and view all the answers

In NDT procedures, what is required to determine which discontinuities are defects?

Acceptance criterion Signup and view all the answers

What is a disadvantage of NDT that involves different analysis tests?

Results require analysis from qualified workers Signup and view all the answers

What type of defects are classified as non-critical defects in NDT?

Inclusion defects Signup and view all the answers

Which of the following is an advantage of NDT compared to UC3M?

Properties are analyzed Signup and view all the answers

What is a portable equipment advantage of NDT?

Can be carried out on working components Signup and view all the answers

What is the primary objective of liquid penetrant testing?

To detect discontinuities in non-porous solid materials Signup and view all the answers

Which characteristic of a defect makes it NOT relevant according to the text?

Porous structure Signup and view all the answers

What is a disadvantage of NDT according to the text?

Complexity of the technique Signup and view all the answers

What is the main requirement for NDT techniques to identify the area to be examined?

Adequately prepared and accessible area Signup and view all the answers

Which NDT technique is suitable for detecting internal and external cracks?

Liquid penetrant testing Signup and view all the answers

What is a critical characteristic of material for NDT selection based on the provided text?

Brittleness Signup and view all the answers

Study Notes

Ultrasound Transmission Thickness Measurement

Ultrasound transmission thickness measurement can detect defects such as cracks, voids, delaminations, inclusions, and corrosion.
One advantage of ultrasound transmission thickness measurement is its good sensitivity.
Materials with high acoustic impedance can pose problems for ultrasound transmission thickness measurement.
Inspection of thin thicknesses is difficult with ultrasound transmission measurement because the sound wave may not penetrate the material.
One limitation of ultrasound transmission thickness measurement is that it cannot be used to inspect materials with complex geometries.
Ultrasound transmission thickness measurement provides the advantage of fast inspection when examining samples with simple geometries.

NDT

NDT can detect various defects, including cracks, voids, porosity, inclusions, and laminations.
In NDT procedures, knowledge of the acceptable defect sizes and locations is required to determine which discontinuities are defects.
A disadvantage of NDT that involves different analysis tests is that it can be time-consuming.
Non-critical defects in NDT are those that do not affect the material's function.
An advantage of NDT compared to UC3M is that it is non-destructive.
A portable equipment advantage of NDT is that it can be used in various locations.

Liquid Penetrant Testing

The primary objective of liquid penetrant testing is to detect surface-breaking defects.
A defect's irrelevant characteristic is whether it is open to the surface.
A disadvantage of NDT is that it can be subjective.
The main requirement for NDT techniques to identify the area to be examined is to define the region of interest.
Ultrasonic testing is suitable for detecting internal and external cracks.
A critical characteristic of material for NDT selection is its surface condition.

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Description

Test your knowledge about the advantages and disadvantages of Non-Destructive Testing (NDT). Explore the benefits and drawbacks of NDT methods in analyzing properties of manufactured components and working components.