1. A vibrator comprising:
a housing having an internal space;
an elastic member having both ends fixed to the housing so as to be disposed in the internal space in a state in which elastic deformation is possible; and
a piezoelectric element mounted on one surface of the elastic member,
wherein the piezoelectric element is fixed to the elastic member by soldering.
2. The vibrator of claim 1, wherein the piezoelectric element includes a metal layer provided in a direction in which the piezoelectric element is coupled to the elastic member.
3. The vibrator of claim 2, wherein the metal layer entirely covers one surface of the piezoelectric element.
4. The vibrator of claim 2, wherein an insulating layer is provided between the piezoelectric element and the metal layer.
5. The vibrator of claim 1, wherein the piezoelectric element is fixed to the elastic member by soldering via solder cream.
6. The vibrator of claim 5, wherein the solder cream is a mixture of any one of lead powder or tin powder and a flux.
7. The vibrator of claim 1, wherein the elastic member includes a bottom plate of which the piezoelectric element is mounted on one surface and an extension plate extended in a height direction from both ends of the bottom plate in a width direction.
8. The vibrator of claim 7, wherein the extension plate includes a connection part having one end connected to the bottom plate, and extended in the height direction from a central portion of the bottom plate in a length direction and a support plate part provided at the other end of the connection part in the length direction to guide a mass body.
9. A vibrator comprising:
a housing having an internal space;
an elastic member having both ends fixed to the housing so as to be disposed in the internal space in a state in which elastic deformation is possible; and
a piezoelectric element mounted on one surface of the elastic member,
wherein the piezoelectric element is mounted on the elastic member after applying solder cream to the elastic member and fixed to the elastic member by a reflow method.
10. The vibrator of claim 9, wherein the piezoelectric element includes a metal layer provided at a portion thereof mounted on the solder cream.
11. The vibrator of claim 10, wherein an insulating layer is provided between the metal layer and the piezoelectric element.
12. An electronic device comprising:
a display module displaying an image depending on selection of a user;
a case having an internal space receiving the display module; and
a vibrator including a housing mounted in the case and having an internal space, an elastic member mounted in the internal space, a piezoelectric element mounted on one surface of the elastic member by soldering via solder cream and vibrating the elastic member by deformation, and a mass body coupled to the elastic member while absorbing shocks.
13. The electronic device of claim 12, wherein the vibrator is mounted on an inner surface of the case.
14. The electronic device of claim 12, wherein the vibrator is mounted on a lower surface of the display module.
15. The electronic device of claim 12, wherein the display module includes:
a touch panel receiving a touch interaction of a user; and
a display panel coming in contact with a lower surface of the touch panel to provide a corresponding image depending the touch interaction with the touch panel.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A joined superalloy component comprising:
a superalloy substrate defining a recess having a recess profile;
a mating superalloy splice having a splice projection captured within the substrate recess, with a projection profile conforming with the substrate profile along a contact surface within the recess; and
the substrate and splice affixed to each other along the contact surface by the process of electric resistance welding by:
compressing the substrate and splice projection together along the contact surface at a selected pressure;
conductively contacting the substrate and splice with separate electric resistance welding electrodes;
passing current at a selected flow rate and application time period through the substrate and splice projection between the electrodes until localized melting occurs along the contact surface, and ceasing further current flow after the substrate and splice projection are mutually affixed to each other.
2. The component of claim 1, wherein the recess and splice projection conforming profiles form an outwardly diverging gap for ejection of excess localized melted material out of the recess.
3. The component of claim 1, wherein repair splice and substrate affixation further comprises interposing weld alloy between the recess and splice projection along the contact surface before the compressing step.
4. The component of claim 3, wherein the substrate and splice are constructed of a same material with substantially similar mechanical structural properties, affixed to each other with weld alloy that upon its melting does not substantially change said structural properties.
5. The component of claim 4, wherein the component substrate is selected from the group consisting of turbine blades and turbine vanes.
6. The component of claim 1, further comprising conforming a profile of an exterior facing surface of the splice with that of the surrounding substrate.
7. A method for joining superalloy structures, comprising:
forming a recess in a superalloy component substrate having a recess profile defined by the remaining substrate;
forming a mating superalloy splice having a splice projection, with a projection profile conforming with the substrate recess profile along a corresponding contact surface;
inserting and capturing the splice within the recess, so that the projection and recess are in abutting contact along the contact surface;
compressing the substrate and splice projection together along the contact surface at a selected pressure;
conductively contacting the substrate and splice with separate electric resistance welding electrodes; and
passing current at a selected flow rate and application time period through the substrate and splice projection between the electrodes until localized melting occurs along the contact surface, and ceasing further current flow after the substrate and splice projection are mutually affixed to each other.
8. The method of claim 7, wherein the recess forming step is performed by electric discharge machining.
9. The method of claim 7, wherein during the recess forming step, the recess so formed comprises a blind recess formed partially within the component substrate thickness for engagement with a mating projecting portion formed in the splice.
10. The method of claim 7, wherein during the recess and splice forming steps, the recess and splice projection mating profiles so formed only allow unidirectional insertion of the splice.
11. The method of claim 7, wherein during the recess and splice forming steps the recess and splice projection mating profiles so formed are planar.
12. The method of claim 7, wherein the recess and splice projection conforming profiles form an outwardly diverging gap for ejection of excess localized melted material out of the recess.
13. The method of claim 7, further comprising interposing weld alloy between the recess and splice projection along the contact surface before the compressing step.
14. The method of claim 13, wherein the substrate and splice are constructed, of a same material with substantially similar mechanical structural properties, affixed to each other with weld alloy that upon its melting does not substantially change said structural properties.
15. The method of claim 14, wherein the repaired component substrate is selected from the group consisting of turbine blades and turbine vanes.
16. The method of claim 7, further comprising conforming a profile of an exterior facing surface of the splice with that of the surrounding substrate.
17. A method for repairing a superalloy component, comprising:
removing a damaged portion of superalloy component substrate and forming an excavated recess therein having a recess profile defined by the remaining substrate;
forming a mating superalloy repair splice having a splice projection, with a projection profile conforming with the substrate recess profile along a corresponding contact surface, wherein the recess and splice projection conforming profiles form an outwardly diverging gap;
interposing weld alloy between the recess and repair splice along the contact surface;
inserting and capturing the repair splice within the recess, so that the projection and recess are in abutting contact along the contact surface;
compressing the substrate and splice projection together along the contact surface at a selected pressure with a pair of opposed electric resistance welding electrodes; and
passing current at a selected flow rate and application time period through the substrate and splice projection between the electrodes until weld alloy localized melting occurs along the contact surface, and ceasing further current flow after the substrate and splice projection are mutually affixed to each other.
18. The method of claim 17, wherein the substrate and repair splice are constructed of a same material with substantially similar mechanical structural properties, affixed to each other with weld alloy that upon its melting does not substantially change said structural properties.
19. The method of claim 18, wherein during the interposing step the weld alloy is selected from the group consisting of a powdered weld alloy, solid preshapedpreformed ring, foil or ribbon weld alloy, granular weld alloy, or paste weld alloy.
20. The method of claim 19, further comprising interposing an activator between the recess and repair splice along the contact surface during the interposing step.