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S19 Usinagem dos Materiais |
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Title:
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WORKPIECE BURN DETECTION DURING GRINDING BY ACOUSTIC EMISSION
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Summary :
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A FUNDAMENTAL DIFFICULTY IN CONTROLLING GRINDING DAMAGE IS THE LACK OF A RELIABLE METHOD OF PROVIDING IN-PROCESS FEEDBACK DURING GRINDING. IN GRINDING OF METALS, THE DAMAGE IS REFERRED TO AS WORKPIECE BURN. IN THIS WORK, THE ACOUSTIC EMISSION SIGNAL IS ACQUIRED FOR TWO DIFFERENT STEELS, THE 52100 BEARING STEEL (SOFT) AND THE INCONEL (RELATIVELY HARD). THIS WORK IS DISTINGUISHED BY A HIGH SAMPLING RATE (2.56 MHZ) DATA ACQUISITION SYSTEM AND THE SIGNAL PROCESSING OF THE RAW SIGNAL INSTEAD OF THE RMS, OFTEN USED FOR THIS PURPOSE. THE INVESTIGATIONS HAVE SHOWN SIGNS OF BURN IN THE FREQUENCY DOMAIN, IN THE TIME DOMAIN, AND IN THE CORRELATION BETWEEN WHEEL ROTATIONS. |
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Author :
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Aguiar, Paulo Roberto
Wang, Zhen 0
Webster, John 0
Willett, Peter K
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Paper View :
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