权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Monitoring System of Friction and Wear for Ceramics Fiber Reinforced Materials.

陶瓷纤维增强材料摩擦磨损监测系统。

基本信息

批准号：
02650107
负责人：
HISAKADO TERUMASA
金额：
$ 1.28万
依托单位：
Gunma University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1990
资助国家：
日本
起止时间：
1990 至 1991
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-02650107/
关键词：
AE Ringdown Counts SiC-Fiber Reinforced Material Ceramic Disk Fiber Content Pin on Disk Type Wear Machine Wear Type Micro-groove on Worn Surface In-process Measurement AEソングダウン計数率 AEリングダウン数 SiC繊維強化金属摩擦損傷

项目摘要

The friction and wear tests were carried out for combinations of three kinds of SiC fiber reinforced material pins(SiC・FRM)with various ceramic disks(ZrO_2, Al_2O_3, Si_3N_4, SiC)at sliding speeds 60-90 mm/s and under applied loads of 1.84-5.29 N and during their tests, an acoustic emissions(AE)were measured. The relationship between the acoustic emissions and the frictional deformations and damages of SIC・FRM pins, and ceramic disks was obtained experimentally and the wear rates were estimated from the ringdown counts of AE as compared with the worn surface topographical parameters.1. The ringdown counts of AE measured during the wear tests increased with an increase of the wear rates of SiC・FRM pins.2. The changes in the ringdown counts of AE were attributed to not only the frictional damages but also the behaviors of the transferred particles and the wear ones at the interface.3. The ringdown counts of AE increased with increasing ratio of the volumes removed to the groove volumes ab and with increasing leveling depth 1sigma and mean depth of the grooves Sp/b formed on the worn surfaces of SiC・FRM pins. The coefficients of friction also increased with an increase of the Sp/b values because of adhesive and ploughing actions of the harder asperities.4. The wear rates of SIC・FRM pins were dependent on the values of 1sigma, Sp/b, and the mean tip radius ro of asperities.5. The wear rates of the SIC・FRM pins and the ceramic disks increased with increase in the alpha-b values and the wear index GAMMA and could be estimated quantitatively by alphab・GAMMA values.

在1.84-5.29 N的载荷下，对3种SiC纤维增强材料销钉（SiC·FRM）与各种陶瓷圆盘（ZrO_2、Al_2O_3、Si_3N_4、SiC）在60-90 mm/s的滑动速度下进行了摩擦磨损试验，并测量了声发射。通过实验获得了声发射与SiC·FRM销和陶瓷盘摩擦变形和损伤的关系，并通过声发射振铃计数与磨损表面形貌参数的比较，估算了磨损率.磨损试验中声发射振铃计数随SiC·FRM针磨损率的增加而增加.声发射振铃计数的变化不仅与摩擦损伤有关，还与界面处的转移粒子和磨损粒子的行为有关.声发射衰荡计数随去除体积与沟槽体积ab之比的增大而增大，随SiC·FRM销磨损表面上形成的沟槽的平整深度1 σ和平均深度Sp/B的增大而增大。摩擦系数也随着Sp/B值的增加而增加，这是由于较硬的微凸体的粘附和犁削作用. SiC·FRM钉的磨损率与1 σ、Sp/B和微凸体的平均尖端半径ro有关. SiC·FRM销和陶瓷盘的磨损率随α b值和磨损指数的增加而增加，并可通过α b·<$MA值进行定量估计。