Evaluation of fatigue properties of high-performance fibers based on fixed-point bending fatigue test

2011 ◽  
Vol 46 (7) ◽  
pp. 833-840 ◽  
Author(s):  
Guangming Cai ◽  
Xiaoguang Wang ◽  
Xianjun Shi ◽  
Weidong Yu
2020 ◽  
Vol 2020 ◽  
pp. 1-14
Author(s):  
Hongshuai Gao ◽  
Quansheng Sun

There are many diseases in the deck pavement of long-span steel bridges under the action of vehicles, rainwater, and freezing. It is necessary to study a new type of pavement material with high waterproof property, light weight, and high bonding performance for steel deck pavement. Polyurethane cement composite (PUC) can be used for steel deck pavement. In order to find out the temperature effect on fatigue properties of PUC, the four-point bending fatigue test was carried out at different temperatures. In this paper, the optimum mix ratio of PUC was selected by compressive and flexural tests, and then the bending fatigue test was conducted under strain control mode. Under temperature and external force coupling condition, a method for predicting fatigue life of PUC is proposed by the combination of theoretical deduction and experimental research. The results show that the proposed formula can effectively describe the fatigue life and fatigue limit of PUC. Finally, compared with three different asphalt mixtures for steel deck pavement, it is found that the fatigue performance of polyurethane cement is better than that of asphalt mixture.


Author(s):  
Marco Antonio Meggiolaro ◽  
Jaime T P Castro ◽  
Rodrigo de Moura Nogueira

2008 ◽  
Vol 51 (2) ◽  
pp. 166-172 ◽  
Author(s):  
Katsuji Tosha ◽  
Daisuke Ueda ◽  
Hirokazu Shimoda ◽  
Shigeo Shimizu

2014 ◽  
Vol 989-994 ◽  
pp. 3029-3032
Author(s):  
Xun Jiong Xu ◽  
Liang Tian

Through researches a new method of bending fatigue test of vehicle steering wheel was raised in this paper. The new method is closer to the actual using condition of vehicle steering wheel, which enhances the reliability of the test.


2012 ◽  
Vol 13 (6) ◽  
pp. 923-932 ◽  
Author(s):  
X. Wang ◽  
W. Xu ◽  
Y. Huang ◽  
M. Zhong ◽  
H. Fan

2013 ◽  
Vol 753-755 ◽  
pp. 1175-1179
Author(s):  
Bao An Yang ◽  
Xu Hui Li ◽  
Fei Yang ◽  
Zi Ru Niu ◽  
Zhi Hong Wang

The aluminum alloy automotive wheels are widely used and their quality safety is vital. So their structure design should be optimized. Based on the wheel bending fatigue test and the analysis of aluminum alloy automotive wheel's structure characteristics, the wheel's load was discussed and the analysis of the wheel was done by using Solidworks and ANSYS. The analysis result provides scientific basis for the optimization design of the aluminum alloy automotive wheels.


Author(s):  
Masashi Yamanaka ◽  
Shinji Miwa ◽  
Katsumi Inoue ◽  
Yoshiki Kawasaki

This paper deals with the evaluation of influence of the manufacturing methods precision forging and conventional hobbing on the bending fatigue strength of carburized gears. The forging has advantages in productivity and strength. The forged gear has a continuous directed fiber flow which runs along the gear profile. To clarify the effect of strength enhancement, a bending fatigue test is performed for the forged and the hobbed gears. The material of test gears is SCr420H in the JIS and all gears are carburized. The electrohydraulic servo-controlled fatigue tester is used in the constant stress-amplitude fatigue test. The strength is expressed by the fillet stress level, which is calculated by FEM. The obtained strengths of forged and hobbed gear are 1613 MPa and 1490 MPa, respectively. The strength of forged gear is increased 8% in comparison with that of the hobbed gear. The surface hardness is higher and the surface roughness is smaller in the forged gear, however, the residual stress is approximately same. The effect of improvement of the roughness by forging on the strength is small in 1%, and the main reason of the improvement of fatigue strength is considered as the continuous fiber flow.


Sign in / Sign up

Export Citation Format

Share Document