Apparatus and method for inspecting the interior surfaces of devices such as vessels having a single entry port. Laser energy is launched into the vessel, and the light reflected from the interior surfaces is interfered with reference laser energy to produce an interference pattern. This interference pattern is analyzed to reveal information about the condition of the interior surfaces of the device inspected.
The present invention generally relates to procedures for inspecting the condition of manufactured articles, and, more particularly to the inspection of the interiors of manufactured articles such as tanks, medical implants, turbines, and other closed applications in which only a limited access is provided. This invention was made with Government support under Contract No. W-7405-ENG-36 awarded by the U.S. Department of Energy. The Government has certain rights in the invention.