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Product service life rapid test method based on physical model

A physical model and inspection method technology, applied in the testing of machine/structural components, speed/acceleration/shock measurement, and testing/calibration of speed/acceleration/shock measurement equipment, etc., to shorten inspection time, save test sample size, The effect of saving test time

Inactive Publication Date: 2013-09-18
BEIHANG UNIV
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Problems solved by technology

Through the novelty search of existing technologies, there is no research on product life testing based on parameter degradation physical models at home and abroad

Method used

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  • Product service life rapid test method based on physical model
  • Product service life rapid test method based on physical model
  • Product service life rapid test method based on physical model

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Embodiment Construction

[0047] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0048] The following embodiments are based on the quartz flexible accelerometer as the research object figure 1 The flow shown is carried out, and finally a quick inspection scheme for the stability of the performance parameters of the accelerometer is determined. details as follows:

[0049] Step 1: Determine the equivalent environmental profile

[0050] a. Select the degraded physical model of the accelerometer parameters, the degraded physical model characterizes the relationship between the amount of performance parameter degradation and environmental stress and time;

[0051] The physical model of accelerometer performance parameter scaling factor changing with temperature and time is:

[0052] ΔK 1 K 1 = ( ...

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Abstract

A product service life rapid test method based on a physical model comprises the steps of determining an equivalent environment profile; determining acceleration test conditions; determining an upper quality specification limit of the test; and determining a plurality of groups of sampling plans (n, c) under the given reliability and user risk. According to the method, the degradation physical model and acceleration tests are combined, so that forming of service life rapid test schemes of products of different types can be effectively guided, and whether the batch of products can meet service life index requirements under specified utilization conditions and environment conditions is tested within a short time. The stability rapid test method for product performance parameters is provided through the performance parameter physical model, so that the test sample size and test time can be saved, and research and development costs can be reduced; and by means of the acceleration test method, product batch production test time can be greatly shortened, and test procedures can be simplified.

Description

technical field [0001] The invention provides a method for rapidly inspecting product life based on a physical model, in particular relates to a method for rapidly inspecting life based on a degradation physical model and an accelerated test, and belongs to the technical field of reliability testing. Background technique [0002] Product life can be characterized by performance parameters and specified thresholds. For products with degradation characteristics, its performance parameters are required to meet the change within the specified time and range, and life index assessment is required before leaving the factory. Faced with the situation of tight product development cycle and high cost control requirements, in order to improve test efficiency, shorten test cycle and reduce test cost, accelerated test technology has become a very important development direction in the field of reliability test technology. The physical model-based rapid inspection method of the product ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01P21/00G01M99/00
Inventor 许丹张辉睿陈云霞康锐
Owner BEIHANG UNIV
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