FAA AMT Airframe Practice Exam 2026 – All-in-One Study Guide to Master Aviation Maintenance Technician Certification!

The curvature of a bend in sheet metal is referred to as the bend radius. The bend radius is the measurement from the center of the bend to the inner surface of the bend. It is a critical factor in sheet metal work as it determines the strength and quality of the bend.

The other options are not correct because:

- Bend angle refers to the measurement of the angle created by the bend.

- Bend curvature is not a commonly used term in reference to sheet metal bending.

- Bend direction does not describe the curvature of the bend itself, but rather the way in which the material is bent.