AME Maintenance Procedures & Inspection Techniques 2

Question 1

Liquid penetrant inspection is capable of detecting which type of discontinuity?

Accepted Answer

Discontinuities open to the surface

Answer

Penetrant must enter the flaw through a surface opening, so only surface-open discontinuities are revealed.

Question 2

Which material CANNOT be inspected using magnetic particle inspection?

Accepted Answer

2024-T3 aluminum alloy

Answer

Magnetic particle inspection works only on ferromagnetic materials, and aluminum is non-magnetic.

Question 3

Eddy current inspection is especially well suited for which task?

Accepted Answer

Detecting cracks around fastener holes in aluminum skins

Answer

Eddy current detects surface and near-surface flaws in electrically conductive materials, such as cracks at fastener holes.

Question 4

Why is a couplant applied between an ultrasonic transducer and the test part?

Accepted Answer

To exclude air so sound energy transmits into the part

Answer

Air reflects nearly all ultrasonic energy, so a couplant fills the gap and allows sound to enter the part.

Question 5

When current is passed directly through a part (a head shot), which defects are best detected?

Accepted Answer

Defects running parallel to the part's long axis

Answer

A head shot creates circular magnetization, which reveals defects lying parallel to the current flow, along the part axis.

AME - Aircraft Maintenance Engineer Practice Test