| EFFECT OF THE FIBER LAMINATION ANGLE OF A CARBON-FIBER, LAMINATED COMPOSITE PLATE ROOF ON THE CAR INTERIOR NOISE |
| Sungil Bang, Yoojin Park, Yeonsoo Kim, Taejin Shin, Jiseon Back, Sang Kwon Lee |
| Inha University |
|
|
|
|
|
|
| |
| ABSTRACT |
|
The paper presents the change of the interior noise according to the lamination angles of the carbon fiber in the
carbon-fiber reinforced plastic (CFRP) laminated composite plate. In the previous paper, the charateristics of the sound
radiated from a CFRP plate was studied in the free field condition. In this paper, vibro-acoustic interaction for the CFRP plate
with various lamination angles was studed considering the application of the CFRP plate to car roof. In order to study the
vibro-acoustic interaction, a certain enclosure with flexible wall was required and then the closed rectangular box was
prepared. The one flexible wall of the rectangular box consisted of CFRP plate. Three CFRP plates with fiber lamination
angles of [−15/15/15/−15]s, [−30/30/30/−30]s, and [−75/75/75/−75]s were fabricated and used as one flexible wall of the
closed box. These plates were excited by an impact force, and the interior sound pressure within the closed box was calculated
both theoretically and experimentally. Then, the identified vibro-acoustic characteristics were used to apply the CFRP plate to
the roof of a car, thereby shifting the resonance frequency of the interior noise. |
| Key Words:
CFRP (Carbon-Fiber-Reinforced Plastic), Interior noise, Lamination angle, Vibro-acoustic, Car interior
noise, NVH (Noise Vbrtion Harshness) |
|
|
|
Corresponding Author.
Sang Kwon Lee , Email. 
Preview
Full text via DOI
Download Citation 
Print 
