System and method for testing dynamic modulus of viscoelastic material

Abstract

The invention discloses a system and a method for testing the dynamic modulus of a viscoelastic material. The test system comprises a test control system, a first variable-temperature variable-pressure environment simulation device, a second variable-temperature variable-pressure environment simulation device, a variable-temperature variable-pressure system, a vibration test system, a static pressure deformation test system and a material parameter inversion module, the test system formed by the components can be used for testing the dynamic modulus of the viscoelastic material under the simulated actual temperature and pressure environment working conditions. According to the device, contact measurement is avoided, only one sample is used, all the other dynamic mechanical parameters can be obtained through one-time testing, accurate parameter input is provided for acoustic performance design of the viscoelastic material, and the problem that in acoustic performance design of the acoustic material, dynamic parameters of the viscoelastic material and a main curve at different reference temperatures cannot be accurately obtained under actual temperature and pressure environment working conditions is solved.

Description

technical field [0001] The invention relates to the technical field of material dynamic parameter testing, in particular to the testing system and method for dynamic modulus of viscoelastic materials, in particular to the testing system and method for dynamic modulus of viscoelastic materials. Background technique [0002] In the field of acoustic performance design of underwater acoustic materials, viscoelastic materials are the most widely used functional materials. Due to the large changes in static water temperature and pressure in the actual use environment, it is necessary to obtain accurate material dynamic mechanical parameters that can simulate actual working conditions in order to carry out effective acoustic analysis. Performance design: Existing devices and methods for testing dynamic parameters of viscoelastic materials can be divided into four categories according to the excitation mode: free decay method, forced resonance method, forced non-resonance method and...

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Problems solved by technology

[0009] The purpose of the present invention is to solve the problems existing in the prior art and to solve the problem of accurate acquisition of dynamic parameters of viscoelastic materials under actual temperature and pressure environment conditions and master curves under different reference temperatures in the design of acoustic performance of acoustic materials. Only one All other dynamic mechanical parameters can be obtained from the sample and one test, providing accurate parameter input for the acoustic performance design of viscoelastic materials

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