METHOD OF FINDING AREAS OF PRE-FAILURE OF CONSTRUCTION Russian patent published in 2005 - IPC

FIELD: finding areas of pre-failure of constructions of flying vehicles.

SUBSTANCE: method is based upon loading constructions with increasing load. Method includes measurement of optical signals in areas of constructions by using light guides, light-emitting diode, optical radiation receiver and measuring device. Fiber-optic light guide is rigidly attached onto the construction within areas of possible emergence of cracks by means of radiation-transparent glue. Short pulse is applied through one start point of light guide by means of light-emitting diode. After being reflected from free end of light guide, pulse returns to optical radiation receiver. Silver coating with thickness of approximately 1 mcm is applied onto the light guide. Measuring pulse is compared with pulse coming from light-emitting diode through reference light guide. Comparison is carried out in photoelectric signal processing unit. Relation of signal is also processed in photoelectric signal processing unit and result is sent to measuring device.

EFFECT: improved truth of results; higher comfort at finding areas of pre-failure.

2 cl, 1 dwg