This disclosure provides a shield for use in a liquid guided laser system and related method of use. The shield comprises a rigid body with a target facing surface. The rigid body defines a through hole with a diameter that accommodates a liquid guided laser path. The rigid body has a thickness that defines a length of the liquid guided laser path through the rigid body. The thickness of the rigid body is at least twice the diameter of the through hole. The rigid body is positioned in the liquid guided laser path of the liquid guided laser system between a discharge nozzle of the liquid guided laser system and a target.

A gas turbine engine component that includes a structure having a surface which includes multiple cooling channels having a width of 20-30 m and a depth of 25-50 m.

Highly mineralized natural materials often boast unusual combinations of stiffness, strength and toughness currently unmatched by today's engineering materials. Beneficially, according to the embodiments of the invention, these unusual combinations can be introduced into ceramics, glasses, and crystal materials, for example by the introduction of patterns of weaker interfaces with simple or intricate architectures, which channel propagating cracks into toughening configurations. Further, such deliberately-introduced weaker interfaces, such as exploiting three-dimensional arrays of laser-generated microcracks, can deflect and guide larger incoming cracks. Addition of interlocking interfaces and flexible materials provide further energy dissipation and toughening mechanism, by channeling cracks into interlocking configurations and ligament-like pullout mechanisms. Such biomimetic materials, based on carefully architectured interfaces, provide a new pathway to toughening hard and brittle materials.

A laser machining device includes a laser machining head and a control unit. The laser machining head applies laser for machining an object to be machined, and includes a first laser light source for first laser, a second laser light source for second laser having a different pulse width different from the first laser, a condensing optical system provided between the object and the laser light sources to condense at least the lasers on the object, a switch mechanism provided between the condensing optical system and the laser light sources so that the switch mechanism is movable to a position that at least one of the lasers enters the condensing optical system, and an irradiation angle change mechanism provided between the condensing optical system and the switch mechanism to change an irradiation angle of the first laser. The control unit controls the laser machining head.

A method for fabricating an airfoil includes forming a diffuser section in an exterior surface of the airfoil. The diffuser section is defined by at least an outer surface and an inner surface that converge at a stop surface. The method also includes positioning a drilling element of a drilling device on the stop surface. The method further includes orienting the drilling element at a first angle relative to the exterior surface. The method also includes forming, using the drilling element, a cooling channel extending through the airfoil from the stop surface to an interior surface, thereby forming the cooling channel at substantially the first angle.

A gas flow can be provided together with a liquid jet guided laser beam to remove accumulated liquid on the processing surface. The gas flow can have minimum interference with the liquid jet guided laser beam, while functions to blow away liquid generated by the liquid jet. Keeping the surface free from accumulated liquid can improve the efficiency of the liquid jet guided laser processing.

A bonded dissimilar material structure includes a first component made of a first dissimilar material; a second component made of a second dissimilar material stacked under the first component; and a plurality of blind holes formed on an upper surface of the second component; and the first component has a plurality of protrusions formed in the plurality of blind holes on the second component, respectively.

A fixing method for fixing a terminal to a conductive pattern with a brazing filler metal disposed therebetween includes: a first step of disposing the brazing filler metal on the conductive pattern; a second step of bringing the terminal into contact with the brazing filler metal; and a third step of forming a penetrating hole in the terminal by irradiating a laser beam onto the terminal. In the third step, the laser beam is irradiated onto the terminal in such a manner that the penetrating hole is filled with the brazing filler metal melted by the irradiation of the laser beam.

A method for producing a multi-jet nozzle body from a nozzle body blank produced by an injection molding or an additive manufacturing process, and a multi-jet nozzle body. The nozzle body blank defines a fluid chamber and is provided with at least two nozzle geometries having respective axes arranged to extend in a discharge direction and to intersect at a point of intersection outside of the nozzle geometries. The method includes processing, via laser processing, the nozzle body blank to form at least one of: an inflow arranged between one of the at least two nozzle geometries and the fluid chamber; or a funnel arranged between one of the at least two nozzle geometries and the inflow, thereby producing the multi-jet nozzle body.

A laser head apparatus that enables switching between a laser beam and a purging stream. The laser head apparatus includes a bracket that provides for translation and rotation of the laser optics and purging nozzle. The laser optics and purging nozzle are located on opposite sides of the bracket and may be rotated to different rotational positions around a center axis of the bracket and translated to different linear positions along a length of the bracket. Methods of removing material using the laser head apparatus to between a laser beam and a purging stream are also provided.