Two-stage micro flyer impact stress testing device and testing method

A technology of impact stress and testing equipment, which is applied to measuring equipment, force/torque/work measuring instruments, instruments, etc., can solve problems such as large errors, achieve accurate measurement of impact stress, and reduce mechanical influence

Active Publication Date: 2021-07-23
ZHONGBEI UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The main purpose of the present invention is to provide a two-stage micro-flyer impact stress test device and test method to overcome the problem of large errors in the existing piezoelectric film micro-flyer impact stress test

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  • Two-stage micro flyer impact stress testing device and testing method
  • Two-stage micro flyer impact stress testing device and testing method
  • Two-stage micro flyer impact stress testing device and testing method

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Embodiment Construction

[0033] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0034] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the embodiment of the application. Obviously, the described embodiment is only a part of the application Examples, but not all examples. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0035] like Figure 1-4 As shown, a two-stage micro-flyer impact stress test device includes a fixed base 1, an ignition device 2 is installed on one side of the fixed base 1, and an excitation device 3 and a flyer target are sequen...

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Abstract

The invention discloses a two-stage micro flyer impact stress testing device and testing method. The two-stage micro flyer impact stress testing device comprises a fixed base; one side of the fixed base is provided with an ignition device; an excitation device, a flyer target material, a front-stage piezoelectric sensing unit, an acceleration chamber and a rear-stage piezoelectric sensing unit are sequentially mounted on the fixed base; a charge conversion unit is mounted on one side of the fixed base; the front-stage piezoelectric sensing unit and the rear-stage piezoelectric sensing unit are both in communication connection with the charge conversion unit. When a micro flyer is perforated, the equivalent area of the micro flyer can be accurately obtained by using an electric signal formed by the depolarization effect of a front-stage piezoelectric film sensing layer, so that the form of the micro flyer under the excitation action of a transduction element can be conveniently evaluated, and meanwhile, the impact stress of the micro flyer can be accurately measured; the measurement precision of a rear-stage piezoelectric film sensing layer can be remarkably improved by adding the front-stage piezoelectric film sensing layer to equivalently calculate the contact area of the micro flyer.

Description

technical field [0001] The invention belongs to the field of explosion and impact testing, in particular to a two-stage microflyer impact stress testing device and testing method. Background technique [0002] The shock plate detonator does not contain sensitive primary explosives, has the advantages of high safety, high reliability and anti-electromagnetic interference, and can be widely used in many fields such as smart weapons and civil blasting. In the design and manufacture process of the shock detonator, the measurement of the impact stress obtained by the micro-flyer under the excitation of the energy transducer such as the electric explosion foil is one of the key parameters to evaluate its detonation performance. At present, the measurement of impact stress is mainly obtained by calculating the charge output signal of the high-sensitivity piezoelectric film under the accelerated impact of the microflyer in real time. This method has the advantages of low test cost a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L5/00
CPCG01L5/0052
Inventor 赵河明韩晶闫守阳鲁旭涛彭志凌张冬梅张惠芳
Owner ZHONGBEI UNIV
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