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| 1 | Investigation of Two-Dimensional Ultrasonic Surface Burnishing Process on 7075-T6 Aluminum显示文摘A novel two-dimensional ultrasonic surface burnishing process(2D-USBP)is proposed.7075-T6 aluminum samples are processed by a custom-designed 2D-USBP setup.Parameter optimization of 2D-USBP is conducted to determine the best processing strategy of 7075-T6 aluminum.A uniform design method is utilized to optimize the 2D-USBP process.U〔3(133)and 4(72)tables are established to conduct parameter optimization.Burnishing depth,spindle speed,and feed rate are taken as the control parameters.The surface roughness and Vickers hardness are taken as the evaluation indicators.It establishes the active control models for surface quality.Dry wear tests are conducted to compare the wear-resistance of the 2D-USBP treated sample and the original sample.Results show that the machining quality of 2D-USBP is best under 0.24 mm burnishing depth,5000 r/min spindle speed,and 25 mm/min feed rate.The surface roughness of the sample is reduced from 2517.758 to 50.878 nm,and the hardness of the sample surface is improved from 167 to 252 HV.Under the lower load,the wear mechanism of the 2D-USBP treated sample is mainly abrasive wear accompanied by delamination wear,while the wear mechanism of the original sample is mainly delamination wear.Under the higher load,the accumulation of frictional heat on the sample surface transforms the wear mechanisms of the original and the 2D-USBP treated samples into thermal wear. | Zhenyu Zhou Qiuyang Zheng Cong Ding Guanglei Yu Guangjian Peng Zhongyu Piao | 2021 | Chinese Journal of Mechanical Engineering2021，34，1： | 2 |
| 2 | Influence of undercoating on rolling contact fatigue performance of Fe-based coating显示文摘 | Zhongyu Piao Binshi Xu Haidou Wang Chunhuan Pu | 2009 | Tribology International2009，，1： | 1 |
| 3 | Influence of undercoating on rolling contact fa- tigue performance of Fe-based coating显示文摘 | PIAO ZhongYu XU Bin-Shi WANG Hai-Dou | | Tribology International0，43，12： | 1 |
| 4 | Influence of undercoating on rolling contact fatigueperformance of Fe-based coating显示文摘 | PIAO Zhongyu XU Binshi WANG Haidou | 2010 | TribologyInternational2010，43，： | 1 |
| 5 | Influence of undercoating on rolling contact fatigue performance of Fe-based coating显示文摘 | PIAO Zhongyu XU Binshi WANG Haidou | 2010 | Tribology International2010，43，12： | 1 |
| 6 | Influence of surface nitriding treatment on rolling contact behavior of Fe-based plasma sprayed coating显示文摘 | PIAO Zhongyu XU Binshi WANG Haidou | 2013 | Applied Surface Science2013，266，1： | 1 |
| 7 | Influence of surface roughness on rolling contact fatigue behavior Fe-Cr alloy coatings显示文摘 | PIAO Zhongyu XU Binshi WANG Haidou | 2013 | Journal of Materials Engineering andPerformance2013，22，2： | 1 |
| 8 | Investigation of rolling contact fatigue lives of Fe-Cr alloy coatings under different loading conditions显示文摘 | PIAO Zhongyu XU Binshi WANG Haidou | 2010 | Surface and Coatings Technology2010，204，910： | 1 |
| 9 | Influence of surface nitriding treatment on rolling contact behavior of Fe-based plasma sprayed coating显示文摘 | PIAO Zhongyu XU Binshi WANG Haidou | 2013 | Applied Surfaee Science2013，266，： | 1 |
| 10 | Investigation of RCF failure prewarning of Fe-based coating by online monitoring 显示文摘 | Piao Zhongyu Xu Binshi Wang Haidou | 2014 | Tribology International2014，33，： | 1 |
| 11 | Advanced flexible humidity sensors:structures,techniques,mechanisms and performances显示文摘Flexible humidity sensors are widely used in many fields,such as environmental monitoring,agricultural soil moisture content determination,food quality monitoring and healthcare services.Therefore,it is essential to measure humidity accurately and reliably in different conditions.Flexible materials have been the focusing substrates of humidity sensors because of their rich surface chemical properties and structural designability.In addition,flexible materials have superior ductility for different conditions.In this review,we have summarized several sensing mechanisms,processing techniques,sensing layers and substrates for specific humidity sensing requirements.Aadditionally,we have sorted out some cases of flexible humidity sensors based on different functional materials.We hope this paper can contribute to the development of flexible humidity sensors in the future. | Yuzhe Zhang Yuxi Liu Lifei Lin Man Zhou Wang Zhang Liwei Lin Zhongyu Li Yuanzhe Piao Sun Ha Paek | 2023 | Frontiers of Materials Science2023，17，4： | 0 |
| 12 | Evaluation of Surface Roughness of Aluminum Alloy in Burnishing Process Based on Chaos Theory显示文摘Burnishing experiments with different burnishing parameters were performed on a computer numerical control milling machine to characterize the surface roughness of an aluminum alloy during burnishing.The chaos theory was employed to investigate the nonlinear features of the burnishing system.The experimental results show that the power spectrum is broadband and continuous,and the Lyapunov exponentλis positive,proving that burnishing has chaotic characteristics.The chaotic characteristic parameter,the correlation dimension D,is sensitive to the time behavior of the system and is used to establish the corresponding relationship with the surface roughness.The correlation dimension was the largest,when the surface roughness was the smallest.Furthermore,when the correlation dimension curve decreases,the roughness curve increases.The correlation dimension and surface roughness exhibit opposite variation trends.The higher the correlation dimension,the lower the surface roughness.The surface roughness of the aluminum alloy can be characterized online by calculating the correlation dimension during burnishing. | Zhipeng Yuan Zhenyu Zhou Zhiguo Jiang Zeyu Zhao Cong Ding Zhongyu Piao | 2023 | Chinese Journal of Mechanical Engineering2023，36，1： | 0 |
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