Vibration and Acoustic Characteristics of Aluminium Silicon Carbide Metal Matrix Composite Under Uniform and Non Uniform
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ORIGINAL PAPER
Vibration and Acoustic Characteristics of Aluminium Silicon Carbide Metal Matrix Composite Under Uniform and Non Uniform Thermal Environment Kammuluri Baburaja1,4 · K. Venkata Subbaiah1 · M. P. Arunkumar2
· Vinod S. Bhagat3 · R Kiran Kumar Reddy4
Received: 22 June 2020 / Accepted: 7 October 2020 © Springer Nature B.V. 2020
Abstract Vibration and acoustic characteristics of metal matrix composite - (MMC) of aluminium Silicon carbide is compared with aluminium in lower frequencies. The free and forced vibration responses of different percentage of silicon carbide are examined for different percentage of buckling temperature under uniform and non uniform temperature distribution. The results show that temperature field at higher % of buckling temperature influences the acoustic response significantly. Also it is noticed that uniform temperature field, (T (x) = Tmax ) and Increase and decrease temperature fields modelled by heating 2 at the middle of the panel (T (x) = Tmax [1 − abs(1 − 2x L ) ])) temperature field affects the response significantly. Further, it is noticed in all the aspects high % of silicon carbide contributes in high stiffness and there by reduces noises at low frequencies even under different temperature field. Also from the results obtained in lower frequencies, it is found that nearly 5 to 15 dB of noise is reduced for high stiffness associated mixture of silicon carbide reinforcement in aluminium matrix. Keywords Metal matrix composites · Vibro-acoustics · SiC (Silicon Carbide)
1 Introduction In a Metal matrix composite (MMC) two or more different elements are present, among which ceramic or biological material may be existing; if more than three different elements are present then the composite is termed as hybrid composite. Many new advanced materials are developed by researchers in order to meet the industrial needs. It is known M. P. Arunkumar
[email protected] 1
Department of Mechanical Engineering, Andhra University, Vishakapatnam, 530003, India
2
State Key Laboratory for Strength and Vibration of Mechanical Structures, Shaanxi Key Laboratory of Environment and Control for Flight Vehicle, School of Aerospace Engineering, Xi’an Jiaotong University, Xi’an, 710049, People’s Republic of China
3
Department of Shipbuilding Engineering, Institute of Shipbuilding Technology, Vasco, Goa, India
4
Department of Mechanical Engineering, Koneru Lakshmaiah Education Foundation, Vaddeswaram, Guntur, Andhra Pradesh, 522502, India
that MMC’s has wide role in aerospace applications because of its higher strength besides stiffness and exceptional thermal as well as electrical properties. The most generally used reinforcement in metal matrix composite are silicon carbide and aluminium oxide which provides the tensile strength, hardness and density [1]. In aerospace structures, it is important to have a acoustic methods to control the noise. The development of new material with high damping is a key to eliminate noise and vibration [2]. Mellert et al. [3] express that noise
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