System and method for testing dynamic modulus of viscoelastic materials

Abstract

The invention discloses a testing system and method for the dynamic modulus of a viscoelastic material. The test system test control system of the present invention, the first variable temperature variable pressure environment simulation device, the second variable temperature variable pressure environment simulation device, variable temperature variable pressure system, vibration test system, static pressure deformation test system and material parameter inversion module, the above components The formed testing system can test the dynamic modulus of the viscoelastic material under the conditions of simulating the actual temperature and pressure environment. The device of the present invention avoids contact measurement, can obtain all other dynamic mechanical parameters with only one sample and one test, provides accurate parameter input for the acoustic performance design of viscoelastic materials, and solves the problem of actual temperature, Under pressure environment conditions, the dynamic parameters of viscoelastic materials and the problem of accurate acquisition of master curves at different reference temperatures.

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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