Abstract: Provided is a method for assembling a vehicle roof structure capable of suppressing occurrence of distortion of a roof panel. The method includes an application portion forming step, a roof panel disposing step, a roof panel mechanically fixing step, and a mastic adhesive curing step. In the application portion forming step, a plurality of application portions is formed such that among the plurality of application portions, a central application portion disposed at a center of a cross member in a vehicle width direction has a length that is shorter than a length of an end-side application portion disposed on opposite sides of the center in the vehicle width direction.

Abstract: Provided is a method for assembling a vehicle roof structure capable of suppressing occurrence of distortion of a roof panel. The method includes an application portion forming step, a roof panel disposing step, a roof panel mechanically fixing step, and a mastic adhesive curing step. In the application portion forming step, a plurality of application portions is formed such that among the plurality of application portions, a central application portion disposed at a center of a cross member in a vehicle width direction has a length that is shorter than a length of an end-side application portion disposed on opposite sides of the center in the vehicle width direction.

Abstract: A method of forming a multilayer coating film with excellent flip-flop properties and smoothness and allowing formation of a high-design multilayer coating film. In a method of forming a multilayer coating film comprising: a low-brightness intercoating film; a first base coating film; a second base coating film formed on an object to be coated; and a clear coating film formed on the second base coating film; the first base coating film is obtained by applying a first aqueous base coating material, the second base coating film is obtained by applying a second aqueous base coating material containing a brightness pigment, the clear coating film, with specific compositions and properties, is formed on a low-brightness intercoating film by a wet-on-wet method and the multilayer coating film is heat cured to form a cured multilayer coating film.

Abstract: The invention provides a method of forming a multilayer coating film with excellent flip-flop properties and smoothness, allowing formation of a high-design multilayer coating film. In a method of forming a multilayer coating film comprising a low-brightness intercoating film, a first base coating film and a second base coating film formed on an object to be coated, and a clear coating film formed on the second base coating film, a multilayer coating film that includes a first base coating film obtained by applying a first aqueous base coating material, a second base coating film obtained by applying a second aqueous base coating material containing a brightness pigment, and a clear coating film, with specific compositions and properties, is formed on a low-brightness intercoating film by a wet-on-wet method and is heat cured to form a cured multilayer coating film.

Abstract: A peak detector circuit comprises a peak detecting diode circuitry for detecting peaks in an input FM demodulated signal, a capacitor connected to the output of the diode circuitry, a first resistor connected in parallel with the capacitor, and an amplifier connected to the output of the diode circuitry and having a high input impedance. A second resistor is connected to the first resistor in parallel therewith through a turn-on/off switch for discharging and subsequently charging the capacitor within a short time in response to detection of decreasing in the level of the input FM demodulated signal.