NDT Material Properties & Inspection Standards 2

Question 1

What does the term 'anisotropy' mean in the context of boilermaker materials?

Accepted Answer

Properties that vary depending on direction of measurement

Answer

Anisotropy describes materials whose mechanical or physical properties differ based on the direction in which they are measured.

Question 2

Which ASME standard governs the inspection and testing of pressure vessels?

Accepted Answer

ASME Section VIII

Answer

ASME Section VIII, Division 1 and 2 cover the design, fabrication, and inspection requirements for pressure vessels.

Question 3

The hardness of a material is best defined as its resistance to:

Accepted Answer

Permanent surface indentation or scratching

Answer

Hardness is the material's resistance to localized plastic deformation, typically measured by indentation tests like Rockwell or Brinell.

Question 4

In NDT of boiler materials, what condition does 'hydrogen embrittlement' describe?

Accepted Answer

Loss of ductility due to hydrogen absorption into the metal lattice

Answer

Hydrogen embrittlement occurs when atomic hydrogen diffuses into metal, reducing ductility and increasing susceptibility to cracking.

Question 5

What is the purpose of a Charpy impact test on boiler plate material?

Accepted Answer

Evaluate notch toughness and ductile-to-brittle transition temperature

Answer

The Charpy V-notch test measures how much energy a material absorbs during fracture, indicating toughness and the temperature at which it transitions from ductile to brittle behavior.

(NDT) Boilermaker Nondestructive Testing Certification Practice Test

(NDT) Boilermaker Nondestructive Testing Certification Practice Test

NDT Material Properties & Inspection Standards 2