Material characteristic impact acoustic response test simulation system

Abstract

The invention discloses a material characteristic impact acoustic response test system. The system is composed of three parts, namely an impact system, a data collection system and a data analysis system, wherein the impact system is composed of a pressure trigger, an impact elastic head, a ramming rod and a sample bin and is used for impacting a material and generating an audio signal; the data collection system is composed of a pressure sensor, a speed sensor, an audio sensor and the like and is used for collecting sound information generated in the impacting process; and the data analysis system is composed of a computer, an oscilloscope and other terminals and is used for processing and analyzing data through software. The system is characterized in that an impact response test on thematerial is implemented, and the structure, damage, yield strength, damage strength, sound elasticity modulus, hardness, density and other parameters of the material are measured through an audio characteristic test on sound generated when the material is impacted. The system can be suitable for quantitative testing of the dynamic characteristics of the structure and strength of various hard materials.

Description

technical field [0001] The invention relates to an acoustic testing system for material structure and strength characteristics, and a testing technology for hard materials such as rocks, which can perform impact acoustic response testing on materials on a laboratory testing platform, and determine the material's acoustic response according to the acoustic response characteristics. structure and strength. It belongs to the field of rock mechanics and material testing. Background technique [0002] To test the strength properties of materials, the strength parameters of the materials are usually obtained through compression, tension, shearing and other tests using a material testing machine. For example, material compressive strength, tensile strength, shear strength and hardness, etc., material density, moisture content and other tests. [0003] For material strength testing in the laboratory, it is necessary to process and test specimens according to certain standards. Th...

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Problems solved by technology

However, these testing methods have the following problems: (1) independent testing is required, and it is difficult to test the structure and strength of the material at the same time; The sample and surface treatment procedures are complicated, the preparation time is long, and it is difficult to detect the internal structure of the material; (3) To judge the structural characteristics of the material through the sound wave / ultrasonic test, the input-output measurement of the signal wave is required, and the structure cannot be determined. composition and size

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