Laser maintenance tool

摘要

In one form a maintenance device includes a flexible member with an inspection end sized to be inserted through an inspection port of a workpiece such as a gas turbine engine or a blade of a gas turbine engine. The maintenance device includes a directed energy member that in one form is configured to produce a double pulse laser with an interval time between a first one of the pulses and a second one of the pulses greater than the time of either the first one of the pulses or the second one of the pulses. The first one of the pulses is sufficiently powerful to produce a quantity of debris upon irradiation of the workpiece. The debris produced from the first one of the pulses can be evaporated by the second one of the pulses to eliminate and/or reduce a recast layer on the workpiece.

主权项

1. An apparatus for emitting electromagnetic energy comprising
an inspection device having a flexible extension that includes an inspection end sized to be inserted through an inspection opening of an assembly to be repaired; and a coherent electromagnetic energy device including a pulse laser operable to emit laser pulses at a discharge, the coherent electromagnetic energy device coupled with the flexible extension of the inspection device and operable to be inserted through the inspection opening of the assembly, wherein the pulse laser is a double pulse laser configured to emit successive pairings of limited duration laser pulses including a primary and a secondary laser pulse that are each about 3 ns in duration with an average intensity of about 4 Mega Watts per square centimeter producing a maximum power of about 750 kw, and wherein the interpulse time between pairs is between about 30 ns and about 150 ns.