基于高阶超声非线性系数的齿轮疲劳累计损伤检测与评估
Gear Fatigue Cumulative Damage Detection and Evaluation Based on High-order Ultrasonic Nonlinear Coefficients
全四龙 1张玉华1
作者信息
- 1. 东华理工大学江西省新能源工艺及装备工程技术研究中心,南昌 330013;东华理工大学机械与电子工程学院,南昌 330013
- 折叠
摘要
齿轮的疲劳累计损伤是一种检测难度较大的损伤类型.采用非线性超声技术的高阶超声非线性系数对齿轮的疲劳累计损伤进行评估.以服役3年的齿轮为研究对象,对齿根32个和齿尖端16个检测点进行非线性超声实验.实验结果表明,14号齿和15号齿根部检测点的相对非线性系数最大,说明其疲劳损伤程度最严重.而对于同一个齿,齿根部的疲劳损伤要比齿尖严重.因此,根据检测点计算得的高阶相对非线性系数可用于齿轮疲劳累计损伤评估,为服役齿轮的疲劳损伤提供一种实用的检测方法.
Abstract
Fatigue cumulative damage of gear is a kind of damage type which is difficult to detect.The high order rela-tive nonlinear coefficient of nonlinear ultrasonic technology is used to evaluate the cumulative fatigue damage of gear.The nonlinear ultrasonic experiments are carried on 32 detection points at tooth roots and 16 detection points at tooth tips of a gear that has been in service for 3 years.The experimental results show that the second order and third order relative non-linear coefficient of detection points of tooth root at No14 and No15 are the largest,indicating that the fatigue damage de-gree is the most serious.For the same tooth,the fatigue damage of the root is more serious than that of the tip.Therefore,the higher order relative nonlinear coefficient calculated from the detection points can be used to evaluate the cumulative fatigue damage of gear,which provides a practical detection method for fatigue damage of gear in service.
关键词
齿轮/高阶超声非线性系数/疲劳累计损伤/损伤检测Key words
gear/high-order ultrasonic nonlinear coefficient/fatigue cumulative damage/damage detection引用本文复制引用
基金项目
江西省重点研发计划(20212BBE53033)
东华理工大学江西省新能源工艺及装备工程技术研究中心开放基金(JX-NE2021-03)
东华理工大学江西省新能源工艺及装备工程技术研究中心开放基金(JXNE2022-05)
东华理工大学试验技术开发项目(DHSY-202253)
东华理工大学试验技术开发项目(DHSY-202310)
出版年
2024
NETL
NSTL
万方数据