Test on Aerospace Materials and Inspection Basics

Question 1: Refrigerated aluminum alloy rivets remain soft indefinitely.

A. Ano

B. Ne

Explanation: The rivets will remain soft for several days when stored in a refrigerator, not indefinitely.

Question 2: Precipitation heat treatment of an aluminum alloy is also referred to as artificial aging.

A. Ano

B. Ne

Explanation: After a piece of aluminum has been solution heat-treated, it is held at a specified elevated temperature for a period. It is also referred to as artificial aging.

Question 3: What process involves holding a solution heat-treated piece of aluminum at a specified elevated temperature for a period?

A. Solution heat treatment

B. Precipitation heat treatment

C. Quenching

D. Refrigeration

Explanation: According to the study material, after a piece of aluminum has been solution heat-treated, it is held at a specified elevated temperature for a period. This process is known as precipitation heat treatment.

Question 4: According to the study materials, for how long will certain aluminum alloy rivets remain soft when stored in a refrigerator at a temperature lower than 32°F?

A. A few hours

B. Several days

C. A couple of weeks

D. Indefinitely

Explanation: The study materials state that when rivets are stored in a refrigerator at a temperature lower than 32°F, they will remain soft for several days.

Question 5: Filiform corrosion on an aircraft structure typically appears as smooth, uniform discoloration.

A. Ano

B. Ne

Explanation: Filiform corrosion usually appears as thread-like lines of puffiness under a film of polyurethane or other dense finish system topcoats, not as smooth, uniform discoloration.