System and method for testing dynamic modulus of viscoelastic material

A dynamic modulus, testing system technology, applied in the direction of analyzing materials, testing material strength by applying stable tension/compression, measuring devices, etc.

Active Publication Date: 2020-10-09
INST OF ACOUSTICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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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 diff

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  • System and method for testing dynamic modulus of viscoelastic material
  • System and method for testing dynamic modulus of viscoelastic material
  • System and method for testing dynamic modulus of viscoelastic material

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Embodiment Construction

[0077] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0078] The viscoelastic material dynamic modulus testing system of the present invention can realize the automatic measurement of the viscoelastic material dynamic modulus within the temperature and pressure range that can be controlled by itself. On this basis, by using the complex model based on the H-N model in the material parameter inversion module The volume model is used to fit C1 and C2 in the WLF equation, and finally can complete the simulation of extreme environmental conditions such as actual high hydrostatic pressure, and measure the dynamic parameters of viscoelastic materials with wide frequency and wide temperature range.

[0079] Such as image 3 As shown, the viscoelastic material dynamic modulus testing system test control system 1 of the present invention, the first variable temperature variable pressure environment simulat...

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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...

Claims

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Application Information

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IPC IPC(8): G01N3/00G01N3/08G01N3/06
CPCG01N3/00G01N3/06G01N3/068G01N3/08G01N2203/0019G01N2203/0216G01N2203/0222G01N2203/023G01N2203/0256G01N2203/0641
Inventor 尹铫彭锋李超杨婉雨张秀娟杨军程晓斌
Owner INST OF ACOUSTICS CHINESE ACAD OF SCI
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