Method and system for testing rolling load performance of moving surface layer

By constructing a multi-cycle, parameter-variable rolling load spectrum and a reciprocating rolling load of the roller assembly, and collecting and processing test data, the problem that existing static tests cannot simulate real rolling conditions is solved. This enables accurate assessment of rolling fatigue and monitoring of damage characteristics of the moving surface layer, and improves the accuracy and reliability of test results.

CN121720862APending Publication Date: 2026-03-24BEIJING HUA AN UNITED CERTIFICATION DETECTION CENT CO LTD
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Patent Information

Application Number
CN202511898895.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-16
Publication Date
2026-03-24

AI Technical Summary

Technical Problem

Existing static testing methods cannot accurately simulate the dynamic transmission path and stress distribution in the contact area of ​​the moving surface layer under real rolling loads, and lack multi-source damage characteristic monitoring, resulting in significant deviations between test results and actual performance, making it difficult to predict fatigue life and damage evolution.

Method used

A multi-cycle, parameter-variable rolling load spectrum is constructed. Reciprocating rolling loads are applied through roller components, and multi-category test data are collected. Time synchronization, noise reduction, and feature extraction are performed to generate a set of damage features of rolling fatigue evolution, and finally, performance evaluation results are generated.

Benefits of technology

It enables a comprehensive assessment of the rolling fatigue evolution of the moving surface layer, improves the accuracy and reliability of test results, and can quantify fatigue damage such as wear, sanding, and spalling, reflecting the load-bearing capacity and durability of the moving surface layer.

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Abstract

The invention relates to a method and a system for testing rolling load performance of a moving surface layer. The method comprises the following steps: fixing a moving surface layer sample to be tested on a test base and determining a rolling test area; a rolling load spectrum comprising a plurality of test periods is constructed, at least one different rolling load parameter is set in different test periods, and the parameters comprise one or more of normal load, contact pressure, rolling speed, reciprocating stroke, rolling path width and cycle index; driving a roller assembly to apply a reciprocating rolling load to the test area according to the load spectrum, and collecting multiple types of test data; performing time synchronization, de-noising and feature extraction on the data to obtain a damage feature set of residual indentation, rigidity attenuation, wear rate, dusting, peeling and the like; generating a rolling load performance score and / or grade determination; and when the two adjacent test periods meet the termination conditions such as the damage threshold, the score threshold or the maximum period number and the like, terminating and outputting a result.
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