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Compact tensile sample inoculation period prediction method considering thickness and crack depth influences

A technology for compact tensile specimens and prediction methods, applied in special data processing applications, instruments, electrical digital data processing, etc., to achieve the effect of simplifying the prediction steps of the gestation period

Inactive Publication Date: 2019-07-02
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the application of this prediction model involves a large number of complex calculation processes and has a certain degree of conservatism, and there are certain limitations for the application of actual components.

Method used

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  • Compact tensile sample inoculation period prediction method considering thickness and crack depth influences
  • Compact tensile sample inoculation period prediction method considering thickness and crack depth influences
  • Compact tensile sample inoculation period prediction method considering thickness and crack depth influences

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Embodiment Construction

[0019] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. In this embodiment, P92 high temperature heat-resistant steel is selected.

[0020] The method for predicting the incubation period of a compact tensile specimen considering the influence of thickness and crack depth of the present invention includes the following steps:

[0021] S1: Such as figure 1 As shown, a prediction model for the incubation period of a compact tensile specimen under high temperature conditions is established. The prediction model includes a compact tensile specimen body 1 with a rectangular parallelepiped structure. The compact tensile specimen body 1 has a transverse symmetry plane Slot 2, the upper hole 3 and the lower hole 4 are symmetrically arranged on the upper and lo...

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Abstract

The invention discloses a compact tensile sample inoculation period prediction method considering the influence of thickness and depth. The method uses a compact tensile sample model to calculate andextract an inoculation period, and uses a large amount of simulation data and a fitting formula to provide the compact tensile sample inoculation period prediction method. The method has the beneficial effect that the step of predicting the inoculation period of the compact tensile sample is simplified.

Description

Technical field [0001] The present invention relates to the evaluation of the incubation period prediction engineering criticality of a compact tensile specimen (CT) considering the influence of thickness and crack depth, or it is to evaluate the compact tensile test when it is determined that the compact tensile specimen (CT) contains cracks. The kind of gestation period. Background technique [0002] Components and equipment in service under high temperature environment will inevitably have various defects during production and service. The initiation and propagation of creep cracks is a major failure mechanism of high-temperature components with defects and causes them to fail before their design life. The incubation period of creep cracks occupies a large proportion in the service life of high-temperature components. In order to ensure the reliability of components served in high-temperature environments, the research on the incubation period of creep cracks becomes more imp...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F2119/04G06F30/23
Inventor 徐连勇邬栋权荆洪阳韩永典赵雷吕小青
Owner TIANJIN UNIV