Wheel Rim Stress Detecting Using Ultrasonic Testing Technology
Train wheels should undergo heat treatment,thus producing circumferential compressive force on the tread to void crack propagation,and this way eventually increases the train wheel service life,excluding situations like wheel burst due to crack.Hem shoes braking will lead to calorification and cooling of wheel rim,in this case stress state of wheel rim will would change under the influence of caloric and mechanical load,and compressive stress will turn to circumferential tensile force.For wheels in service,small flaws appear in the shallow layer of wheel tread,and will expand into depth.Consequently,detecting of wheel rim stress state should be attached more importance.Ultrasonic testing technology is an extremely important method for convenient,fast and non-destructive detecting in routine application of wheel sets.Verification of ultrasonic detecting method in detecting stress of wheel rim is given in this paper.On experimentation platform established with wheel rim stress detecting equipment and tensile stress mechanism,ultrasonic wheel rim stress detecting method is verified to be reliable and stable in the light of contrast between theoretical and experimental results.Basing on wheel rim stress measurement method using transverse straight probe,results are obtained by measuring test block and wheel rim stress,and ultrasonic wheel rim stress detecting method is approved to be feasible in application.
wheel rim stress detecting ultrasonic testing
GUO Jianqiang WANG Pei GAO Xiaorong WANG Li WANG Zeyong ZHAO Quanke
Photoelectric Engineering Institute, Southwest Jiaotong University Chengdu, 610031, China
国际会议
2012第八届精密工程测量和仪器仪表国际研讨会(ISPEMI2012)
成都
英文
1-9
2012-08-08（万方平台首次上网日期，不代表论文的发表时间）