Effect Mechanism of Elliptic Vibration Assistance on the Cutting of Brittle Materials

Peng, Yun; Jiang, Tao; Guo, Yin Biao; Wang, Zhen Zhong; Wu, Yong Bo

doi:10.4028/www.scientific.net/amr.472-475.499

Cited by 4 publications

(2 citation statements)

References 12 publications

(22 reference statements)

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“…4(c-d). As for the Q•ƒ values of dielectric ceramics, it was known that porosity, secondary phase, structure defect and grain boundary of the ceramics produced a deterioration in the Q•ƒ values [16]. Among of these factors, associated with our results the structure defect and grain boundary of the ceramics caused by ball milling more than 10h was suggested to affect the Q•ƒ values obviously.…”

Section: Resultssupporting

confidence: 63%

Effects of Ball Milling Time on the Microwave Properties of Mg4Nb2O9 Ceramics by the Solid-State Process

Jiang

Wang

et al. 2012

AMR

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Corundum-type magnesium niobate (Mg4Nb2O9) ceramics were synthesized by the conventional solid-state method, the effect of ball milling time on microwave properties was studied in detail. Xrd results showed that the major phase was identified as the ordered corundum structure Mg4Nb2O9with minor secondary phase of orthorhombic-symmetry Mg5Nb4O15. The morphology was obviously affected by ball milling times at sintering process, and then the relationships between the morphology and microwave properties were discussed. The results indicated that ball milling times at sintering process could obviously affect the microstructure and microwave properties of Mg4Nb2O9ceramics. When ball milling time was 10h, the Mg4Nb2O9ceramics were prepared with the conditions of calcination at 1100°C for 2h and sintered at 1350°C for 6h, and the optimal microwave properties were εr~13, Q·ƒ~120,000GHz and ƒ~-60ppm/°C.

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Section: Resultssupporting

confidence: 63%

Effects of Ball Milling Time on the Microwave Properties of Mg4Nb2O9 Ceramics by the Solid-State Process

Jiang

Wang

et al. 2012

AMR

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“…Harmonic response analysis is usually used to determine the steady-state response of a linear structure subjected to a sinusoidal load [34,35]. The relationship between the amplitude and frequency under different voltages was analyzed in this work.…”

Section: Harmonic Response Simulation Of Ultrasonic Transducermentioning

confidence: 99%

Surface quality and cylindricity of ultrasonic elliptical vibration–assisted centerless grinding of micro-rod YAG single crystals

Wang

et al. 2022

Int J Adv Manuf Technol

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Micro-rod YAG single crystals are the most commonly used laser crystals for laser gain mediums with a high power. However, brittle fracture and crack damages are easy to occur in the grinding process of micro-rod brittle crystals due to their large length-to-diameter ratio, high brittleness and high hardness. In this work, the modal, frequency and harmonic response of the transducer under ultrasonic elliptical vibration are analyzed by using nite element simulation. Then, the mechanical structure of ultrasonic elliptical vibration system was designed and optimized based on the ultrasonic elliptical vibration theory and nite element simulation. To verify the reliability of the transducer, ultrasonic vibration experiments were are carried out to measure the resonance frequency, amplitude and impedance characteristics of the transducer. The vibration synthesis experiments under different phase differences and different voltages were performed to verify the rationality of the structural design of the ultrasonic elliptical vibration system. An experimental platform of ultrasonic elliptical vibration assisted centerless grinding was developed, and UEVCG tests of micro-rod YAG crystals were performed. The in uences of voltage, phase difference and pallet angle on surface roughness, PV value and cylindricity of the micro-rod YAG crystals were systematically analyzed. The ultrasonic elliptical vibration parameters were optimized based on the range analysis results of the orthogonal test. The results indicated that ultrasonic elliptical vibration effectively improved the surface quality and cylindricity of the micro-rod YAG crystals compared with traditional grinding. This work will not only enhance the understanding of the ultrasonic elliptical vibration principle, but also provide a technical support for precision and high-e ciency machining of micro-rod brittle materials.

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Effect of vibration on surface and tool wear in ultrasonic vibration-assisted scratching of brittle materials

Peng

Liang

et al. 2011

Int J Adv Manuf Technol

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Effect Mechanism of Elliptic Vibration Assistance on the Cutting of Brittle Materials

Cited by 4 publications

References 12 publications

Effects of Ball Milling Time on the Microwave Properties of Mg<sub>4</sub>Nb<sub>2</sub>O<sub>9</sub> Ceramics by the Solid-State Process

Effects of Ball Milling Time on the Microwave Properties of Mg<sub>4</sub>Nb<sub>2</sub>O<sub>9</sub> Ceramics by the Solid-State Process

Surface quality and cylindricity of ultrasonic elliptical vibration–assisted centerless grinding of micro-rod YAG single crystals

Effect of vibration on surface and tool wear in ultrasonic vibration-assisted scratching of brittle materials

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