Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
ENF sample used for three-point bending test, retrieved from [22]: (a) geometry of the sample in front view, (b) adherend back-face with three parallel paths of optical fiber bonded to its surface: path#1: A1 to A2, path#2: B1 to B2, path#3: C1 to C2. Note that drawing is not to scale.
