Effect of temperature on the mechanical characteristics of carbon plastics reinforced with metal mesh

Rozenberg, L. B.; Grishchak, L. E.; Il'man, V. M.

doi:10.1007/bf00855877

Cited by 3 publications

(2 citation statements)

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“…Studies have shown that composite structures' properties (elastic modulus, damping loss factor, natural frequency, etc) strongly depend on temperature. [3][4][5][6] Given that the aforementioned properties are related to STL, the temperature should affect composite structures' STL. Therefore, researchers conducted some investigations on the acoustic analysis of composite structures.…”

Section: Introductionmentioning

confidence: 99%

Analysis of sound transmission loss characteristics of aircraft composite panel under variable temperature environment

Peng

Dong

Yan

2022

Journal of Low Frequency Noise, Vibration and Active Control

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An improved sound transmission loss (STL) experimental technique based on the sound pressure method (SPM) and acoustic box method is proposed to investigate the temperature influence on the STL of the ribbed carbon fiber reinforced plastics aircraft panel. SPM principle is given. The measurement procedure of the improved STL technique is presented and its reliability is verified. STL variable characteristics of the panel within −40°C–40°C were measured. Results showed that temperature had a significant effect on the panel’s STL. The overall STL varied nonlinearly with temperature, whereas STL exhibited a fluctuation or monotony trend at a single center frequency. Temperature variation caused changes of STL peak/dip frequencies and redistribution of stiffness-controlled, resonance-controlled, coincidence-controlled, and damping-controlled regions. The causes of the aforementioned are given. This study reveals the relationship between temperature, thermomechanical parameters and STL. The findings have applications in the design, measurement, analysis, and theoretical development of composite structure acoustics.

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Section: Introductionmentioning

confidence: 99%

Analysis of sound transmission loss characteristics of aircraft composite panel under variable temperature environment

Peng

Dong

Yan

2022

Journal of Low Frequency Noise, Vibration and Active Control

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“…The effect of high temperature on the thermomechanical response of various composite structures, such as multi-layered plates and shells [1], carbon plastic reinforced composite [2], fibre-reinforced plastic composite [3], glass epoxy composites [4] and carbon fibre epoxy composites [5], has been extensively assessed. However, investigation of the thermoacoustic behaviour of composites has been found almost in-existent in the open literature.…”

Section: Introductionmentioning

confidence: 99%

The influence of temperature on wave scattering of damaged segments within composite structures

2018

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The increased use of composite materials in modern aerospace and automotive structures, and the broad range of launch vehicles’ operating temperature imply a great temperature range for which the structures has to be frequently and thoroughly inspected. A thermal mechanical analysis is used to experimentally measure the temperature-dependent mechanical properties of a composite layered panel in the range of -100°C to 150°C. A hybrid wave finite element/finite element computational scheme is developed to calculate the temperature-dependent wave propagation and interaction properties of a system of two structural waveguides connected through a coupling joint. Calculations are made using the measured thermomechanical properties. Temperaturedependent wave propagation constants of each structural waveguide are obtained by the wave finite element approach and then coupled to the fully finite element described coupling joint, on which damage is modelled, in order to calculate the scattering magnitudes of the waves interaction with damage across the coupling joint. The significance of the panel’s glass transition range on the measured and calculated properties is emphasised. Numerical results are presented as illustration of the work.

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Thermal effects on the sound transmission through aerospace composite structures

Chronopoulos

Ichchou

Troclet

et al. 2013

Aerospace Science and Technology

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Effect of temperature on the mechanical characteristics of carbon plastics reinforced with metal mesh

Cited by 3 publications

References 0 publications

Analysis of sound transmission loss characteristics of aircraft composite panel under variable temperature environment

Analysis of sound transmission loss characteristics of aircraft composite panel under variable temperature environment

The influence of temperature on wave scattering of damaged segments within composite structures

Thermal effects on the sound transmission through aerospace composite structures

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