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Tangential Ultrasonic-Vibration Assisted Forming Grinding Gear: An Experimental Study.

Micromachines (Basel) · 2022 · PMC9695681 · PMID 36363847

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showed a trendno p-value reported
Figure 4 b shows that in both cases, with the increased feed speed, the residual compressive stress during C-FGG exhibited a rising trend, while TUVA-FGG showed a trend of first increasing and then decreasing.

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a decreasing trendno p-value reported
Therefore, both normal and tangential grinding forces exhibited a decreasing trend in tangential ultrasonic vibration-assisted forming grinding.

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an increasing trendno p-value reported
Under the action of ultrasonic vibration, the reciprocating ironing effect of abrasive grains on the surface resulted in an increasing trend of residual stress. 3.4.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.