A repair system for a part for a gas turbine engine includes a deposition system that implements a friction stir additive manufacturing (FSAM) process. An inspection system coupled to the repair system identifies a region of interest having damage on the part. A process for deposition of metallic deposition material onto the region of interest performed using the deposition system. A rod of the metallic deposition material is moved using pressure exerted within the deposition system into a deposition zone of the region of interest. The region of interest is pre-heated prior to the pressure being exerted. Frictional heat is generated when the rod contacts the deposition zone. Parameters to control the components within the deposition system are determined using a function and a depth of the layers of the metallic deposition material determined for enabling the repair process.

The present disclosure relates to a bonding strength inspection apparatus capable of inspecting a bonding strength of a bonding part without destruct an inspection target. The present disclosure provides a bonding strength inspection apparatus including a roughness measurement part configured to measure a roughness of a bonding part in which a base metal and a bonding member are bonded to each other; and a processor configured to determine a bonding strength of the bonding part based on the roughness.

A control mechanism, a spindle system, and a spot welding apparatus are provided. The spot welding apparatus includes a spindle body and a hybrid drive mechanism. The spindle body is provided with a compression sleeve mechanism, which is provided with a stirring sleeve mechanism that is rotatable and capable of axial movement along an axis of the spindle body. The stirring sleeve mechanism is internally and coaxially provided with a stirring pin mechanism that is rotatable and capable of axial movement along the axis of the spindle body. The hybrid drive mechanism includes a stirring pin control mechanism drivingly connected to the stirring pin mechanism and a stirring sleeve control mechanism drivingly connected to the stirring sleeve mechanism, so as to drive the stirring pin mechanism and the stirring sleeve mechanism to perform axial movement along the axis of the spindle body.