Ray
MET Priyesh 309
Lab #5 Borescope Testing
Due: April 5, 2012
Introduction:
The objective of this exercise was to become familiar with the borescope testing method. We
were required to take snapshots of 5 separate objects in the metal box and identify them. Once
this was done we needed to summarize the pros and cons of using borescope to test and identify
objects.
Testing equipment used:
We used the borescope that was provided to us by our instructor to take snapshots in the metal
box. The image can be seen in figure 1.
Figure 1: Borescope
Environmental:
The environmental that the measuring equipment and the items were stored and analyzed in was
maintained and kept as constant as possible. They were kept inside in a room with 34% humidity
and temperature at 77 degrees Fahrenheit. As mentioned before, the room was number 162 in the
simulator building at the Arizona State University, Polytechnic campus. The atmospheric
conditions can be seen in the pictures below.
Procedures:
We inserted the lens end of the borescope optical cable through the hole in the metal box and
twisted it around till we could see different objects on the borescope LCD screen. Once we could
get a clear image of the object, usually pushing the optical cable closer to the object works, a we
took picture of the object by pressing the photo button on the borescope. Once pictured of all 5
different objects taken, we transferred the pictures from the memory card to our laptops.
Data & Analysis:
The following pictures were clicked using the borescope. These are the 5 unknown objects
identified inside the metal box.
Figure 2: Electric chip
Figure 3: Nut/screw
Figure 4: Gasket/spacer
Figure 5: Rivet\
Figure 6: screw
Conclusion:
We were successfully able to perform the borescope test and take snapshots of 5 different objects
inside the metal box. We noticed that we get a more magnified and clear image if we push the
optical cable closer to the object. Borescope is a great method to test and see objects that are
difficult to reach and see. It gives a clear and accurate picture of what is going on inside many
devices whose casing or outer covering make it difficult to reach to. But at the same time there
are some limitations to this method. The major limitation is the length of the optical cable. Also
there is a limit to the amount of torque that can be applied to the optical cable before we damage
it. Also, replacing the lens, optical cable is an expensive affair.
Sources:
1. Nondestructive Testing for Aircraft, Douglas C. Latia, Jeppesen