Composite material vibrator

A composite material vibrator comprising:

• a vibrating component that is composed of a material having a first acoustic impedance Z1 and that defines a vibration source;
• a reflective layer that is composed of a cured product of a resin composition including at least a curing agent, a silicone compound, and a curable resin that is curable by heat or light, the cured product having a second acoustic impedance Z2 that is lower than the first acoustic impedance Z1, the reflective layer being connected to the vibrating component;
• and
• a holding component that is composed of a material having a third acoustic impedance Z3 that is higher than the second acoustic impedance Z2, the holding component being connected to surfaces of the reflective layer, the surface being opposite to the surface connected to the vibrating component;
• wherein
• vibration propagated from the vibrating component to the reflective layer is reflected at an interface between the reflective layer and the holding component.

A method for producing a composite material vibrator, comprising the steps of:

• providing a vibrating component that defines a vibration source;
• providing a holding component;
• preparing an uncured resin composition containing at least a curing agent, a silicone compound, and a curable resin that is curable by heat or light;
• laminating the vibrating component and the holding component with the uncured resin composition;
• and
• curing the uncured resin composition to form a reflective layer that is connected to the vibrating component and the holding component;
• wherein
• the vibrating component is formed of a material having a first acoustic impedance Z1, the cured resin composition defining the reflective layer has a second acoustic impedance Z2 that is lower than the first acoustic impedance Z1, and the holding component is formed of a material having a third acoustic impedance Z3 that is higher than the second acoustic impedance Z2;
• and
• vibration propagated from the vibrating component to the reflective layer is reflected at an interface between the reflective layer and the holding component.

A method for producing a composite material vibrator, comprising the steps of:

• providing a vibrating component that defines a vibration source;
• providing a holding component;
• preparing a resin sheet containing at least a curable resin, a curing agent, and a silicone compound;
• disposing the resin sheet on the vibrating component and the holding component;
• and
• curing the resin sheet to form a reflective layer that is connected to the vibrating component and the holding component;
• wherein
• the vibrating component is formed of a material having a first acoustic impedance Z1, the resin sheet defining the reflective layer has a second acoustic impedance Z2 that is lower than the first acoustic impedance Z1, and the holding component is formed of a material having a third acoustic impedance Z3 that is higher than the second acoustic impedance Z2;
• and
• vibration propagated from the vibrating component to the reflective layer is reflected at an interface between the reflective layer and the holding component.