Abstract: A method and apparatus for detecting defects in a structure formed of a honeycomb matrix bonded to a support surface including providing a probe body including means defining a fluid passage forming a supply port to an exterior surface of the probe body; connecting a pressurized fluid source to the fluid passage at a location distal from the supply port; placing the supply port in close proximity to a cell of the honeycomb matrix; supplying fluid from the compressed fluid source to the cell via the fluid passage; and monitoring a fluid pressure produced at a portion of the honeycomb matrix adjacent to the supply port to detect disbonds between the honeycomb matrix and support surface.

Abstract: A method and apparatus for detecting defects in a structure formed of a honeycomb matrix bonded to a support surface including providing a probe body including means defining a fluid passage forming a supply port to an exterior surface of the probe body; connecting a pressurized fluid source to the fluid passage at a location distal from the supply port; placing the supply port in close proximity to a cell of the honeycomb matrix; supplying fluid from the compressed fluid source to the cell via the fluid passage; and monitoring a fluid pressure produced at a portion of the honeycomb matrix adjacent to the supply port to detect disbonds between the honeycomb matrix and support surface.

Abstract: An apparatus and method for inspecting the bonding between a cell structure having a multiplicity of cells which are open at one end and bonded at an opposite end to a substrate are disclosed. The apparatus includes a heater and nozzle arrangement for directing a fluid, such as heated air, having a selected temperature, substantially different from ambient, into the open ends of the cell structure to cause a change in the temperature of the cell structure and radiance therefrom. A sensor is provided for sensing the temperature of the cell structure along the extent thereof or a detector may be provided for detecting the radiance along the cell structure.