Harbor machine steel ring health monitoring method for correcting residual stress based on unit compromise coefficients
A residual stress and health monitoring technology, used in the testing of mechanical components, force/torque/work measuring instruments, and testing of machinery/structural components, etc., can solve the problems of low monitoring efficiency and low accuracy, and improve the accuracy effect with efficiency, avoidance of limitations
Active Publication Date: 2020-04-03
YANGZHOU UNIV
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Problems solved by technology
There are many methods for monitoring the health status of the rim of the port machine, but most of them judge the health state of the rim of the port machine by comparing the stress value of a small number of measuring points with the fracture stress limit value corresponding to the material. There are many limitations in the overall health status monitoring of steel rings, the accuracy is not high, and the monitoring efficiency is low
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[0036] Such as figure 1 As shown, this embodiment is based on the unit compromise coefficient to correct the residual stress monitoring method for the health status of the steel ring of the port machine. The method includes the following steps:
[0037] S1. Residual stress measurement of key areas of port machinery steel ring:
[0038] According to experience, the common vulnerable areas of port machine steel rings are determined, the corresponding port machine steel ring areas are marked, and X-ray residual stress measuring devices are arranged in the common damage marked areas to collect X, Y, The residual stress values in the three directions of Z, namely: σ rix , σ riy , σ riz .
[0039] S2. Determination of the direction of the main element of residual stress:
[0040] On the basis of S1, substitute the following formula for the residual stress direction coefficient Q of each damaged area in the X, Y, and Z directions αi , Q βi , Q γi Perform the calculation and...
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The invention discloses a harbor machine steel ring health monitoring method for correcting residual stress based on a unit compromise coefficient. The method comprises the following steps: S1, measuring residual stress of a key area of a harbor machine steel ring; S2, determining the direction of a residual stress main unit; S3, solving a residual stress calibration coefficient in the direction of the main unit; S4, solving a compromise coefficient correction value of the fused residual stress calibration coefficient; and S5, solving the real-time health state of the port machine steel ring based on unit compromise coefficient correction. The method is accurate and efficient.
Description
technical field [0001] The invention relates to a steel ring health monitoring method, in particular to a port machine steel ring health monitoring method based on unit compromise coefficient correction residual stress. Background technique [0002] At present, in industrial production, port machinery steel rings are used a lot, and the health status of port machine steel rings has attracted more and more attention from the society. Under such a background, if the health status of large-scale port machinery rims cannot be monitored in real time, accidents cannot be grasped and avoided. Therefore, real-time monitoring of the health status of large-scale port machinery rims is necessary and urgent. There are many methods for monitoring the health status of the rim of the port machine, but most of them judge the health state of the rim of the port machine by comparing the stress value of a small number of measuring points with the fracture stress limit value corresponding to th...
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Login to View More IPC IPC(8): G01M13/00G01N33/20G01L5/00G01L1/25
CPCG01L1/25G01L5/0047G01M13/00G01N33/20
Inventor 朱林王鹏孙进韩清振郭广明吴多利边义祥
Owner YANGZHOU UNIV