Determination of the damping characteristics of fiber-metal-elastomer laminates using piezo-indicated-loss-factor experimentsMittwoch (05.07.2017) 18:18 - 18:21 Uhr Bestandteil von:
In technical applications components are often exposed to vibrations with a broad range of frequencies. To ensure structural integrity and a convenient usage for the customer, materials with good damping characteristics are desirable. Especially stiff and lightweight structures tend to be prone to vibrations. Fibre metal laminates offer great potential for lightweight design applications. Using carbon fiber reinforced plastics in the laminates, very good strength and stiffness to weight ratios can be obtained. To improve the damping characteristics of this hybrid material an additional layer of elastomer can be added between the carbon fibers and the metal, generating a fiber-metal-elastomer laminate (FMEL). In this present study the damping behavior of different setups of FMEL was examined. Two different metal sheets and two types of elastomer were used. Also the order of the constituents was variated. Vibrations were induced with a frequency range of 100 Hz to 21kHz by mounting the laminates onto a speaker. The vibration response was measured with a piezoelectric accelerometer. Eventually the different laminate setups were compared with each other to determine the influence of the individual constituents regarding the damping characteristics.