Friction and wear performance on ultrasonic vibration assisted grinding dental zirconia ceramics against natural tooth

Dental zirconia ceramics have been widely used in dental restorations due to their superior aesthetical and mechanical properties. Ultrasonic vibration assisted grinding (UVAG), as a novel effective machining process for hard and brittle materials, is introduced into directly machining sintered dental zirconia ceramics. This study is dedicated to investigating the influence of input variables (spindle speed, feedrate and cutting depth) on surface roughness during UVAG of sintered dental zirconia ceramics. The experiment is conducted through single-factor method, and the experimental results are statistically analyzed by One-Way ANOVA. Besides, the influence tendency of input variables on surface roughness is also obtained. The results indicate that the influence of spindle speed on surface roughness is highly significant. The value of surface roughness rises with the increase of spindle speed, feedrate, and cutting depth. Therefore, a better surface quality will be achieved with the combination of lower spindle speed, cutting depth and feedrate.

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Surface characterization of zirconia ceramics in ultrasonic vibration-assisted grinding

Journal of the Brazilian Society of Mechanical Sciences and Engineering ◽

10.1007/s40430-018-1296-0 ◽

2018 ◽

Vol 40 (8) ◽

Cited By ~ 2

Author(s):

Zhihua Li ◽

Kan Zheng ◽

Wenhe Liao ◽

Xingzhi Xiao

Keyword(s):

Ultrasonic Vibration ◽

Surface Characterization ◽

Zirconia Ceramics ◽

Ultrasonic Vibration Assisted Grinding

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Experimental study on effect of micro textured surfaces generated by ultrasonic vibration assisted face turning on friction and wear performance

Applied Surface Science ◽

10.1016/j.apsusc.2016.07.064 ◽

2016 ◽

Vol 390 ◽

pp. 633-648 ◽

Cited By ~ 39

Author(s):

S. Amini ◽

H. Nouri Hosseinabadi ◽

S.A. Sajjady

Keyword(s):

Experimental Study ◽

Ultrasonic Vibration ◽

Friction And Wear ◽

Textured Surfaces ◽

Wear Performance

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Investigation on grinding temperature in ultrasonic vibration-assisted grinding of zirconia ceramics

Machining Science and Technology ◽

10.1080/10910344.2019.1575405 ◽

2019 ◽

Vol 23 (4) ◽

pp. 612-628 ◽

Cited By ~ 2

Author(s):

Zheng Kan ◽

Liao Wenhe ◽

Sun Lianjun ◽

Meng Heng

Keyword(s):

Ultrasonic Vibration ◽

Grinding Temperature ◽

Zirconia Ceramics ◽

Ultrasonic Vibration Assisted Grinding

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Tribological properties of surface topography in ultrasonic vibration-assisted grinding of zirconia ceramics

Proceedings of the Institution of Mechanical Engineers Part C Journal of Mechanical Engineering Science ◽

10.1177/0954406217747914 ◽

2017 ◽

Vol 232 (22) ◽

pp. 4203-4215

Author(s):

Zhihua Li ◽

Kan Zheng ◽

Wenhe Liao ◽

Xingzhi Xiao

Keyword(s):

Friction Coefficient ◽

Surface Topography ◽

Ultrasonic Vibration ◽

Tribological Properties ◽

Vibration Amplitude ◽

Spindle Speed ◽

Zirconia Ceramics ◽

Significant Difference ◽

Vibration Parameters ◽

Ultrasonic Vibration Assisted Grinding

In order to clarify the friction phenomenon of zirconia ceramics in the dental prosthodontics, tribological properties of surface topography in ultrasonic vibration-assisted grinding (UVAG) are studied in this work. The mechanism of material removal is researched to introduce the discontinuous grooves in UVAG theoretically. The UVAG experiments are conducted on zirconia ceramics. Through investigating and comparing experimental results, it is found that UVAG surface has better tribological properties compared with diamond grinding surface. 3D surface roughnesses of UVAG surface are improved when suitable spindle speed, large feed, small cutting depth, and large vibration amplitude are adopted. Surface topography in UVAG changes from thorn scaly to discontinuous shallow furrow when feed increases and spindle speed decreases. The discontinuous grooves are most apparent when vibration amplitude is maximum. Furthermore, the friction coefficient is experimentally studied. The results indicate that there is no significant difference among all the friction coefficients in UVAG. Proper cutting and vibration parameters can improve the average friction coefficient.

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Investigation on feed direction cutting force in ultrasonic vibration-assisted grinding of dental ceramics

Proceedings of the Institution of Mechanical Engineers Part C Journal of Mechanical Engineering Science ◽

10.1177/0954406216650915 ◽

2016 ◽

Vol 231 (19) ◽

pp. 3493-3503 ◽

Cited By ~ 3

Author(s):

Heng Meng ◽

Kan Zheng ◽

Xingzhi Xiao ◽

Wenhe Liao

Keyword(s):

Mathematical Model ◽

Cutting Force ◽

Ultrasonic Vibration ◽

Abrasive Particle ◽

Force Model ◽

Zirconia Ceramics ◽

Feed Direction ◽

Input Variables ◽

The Mathematical Model ◽

Ultrasonic Vibration Assisted Grinding

The feasibility of ultrasonic vibration-assisted grinding in dental restoration has been preliminarily proved. Improving the machining quality of zirconia ceramics by controlling cutting force is the focus of the researchers. However, the existing feed direction cutting force model for ultrasonic vibration-assisted grinding does not take the ultrasonic vibration amplitude and frequency into account. This paper presents a mathematical model for feed direction cutting force in ultrasonic vibration-assisted grinding of zirconia under the consideration of amplitude and frequency, and assuming that brittle fracture is the primary mechanism of material removal in ultrasonic vibration-assisted grinding of zirconia. The effects of amplitude and frequency on the motion, effective cutting distance, and theoretical removal of an abrasive particle have been analyzed. Besides, the number of active abrasive particles is calculated with analyzing the influences of lateral cracks and ultrasonic vibration. The variation laws of cutting force and penetration depth of an abrasive particle during ultrasonic vibration-assisted grinding have also been analyzed. Therefore, the relationship between feed direction cutting force and input variables is predicted through the developed model. Finally, pilot experiments are conducted for the mathematical model verification. Experimental results show that the trends of input variables for feed direction cutting force agree well with the trends of the developed cutting force model. Hence, the mathematical model can be applied to evaluate the feed direction cutting force in ultrasonic vibration-assisted grinding of zirconia ceramics.

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