Transactions of Materials and Heat Treatment

Title：Design on piezoelectric probe force sensor to test sheet bending load

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ClassificationCode：TG3;TH12;TH87

year,vol(issue):pagenumber：2020,45(1):156-161

Abstract：

In the load test of sheet metal formed by bending die, the ordinary sensor may have a functional failure due to the low signal\|noise ratio and the narrow test space. According to the stress distribution law of metal plastic forming, a piezoelectric probe force sensor was designed. When one end of the probe was subjected to the squeezing action of the sheet bending deformation, the generated stress propagated along the axial direction of the probe, and the bending force of the entire plate was obtained by measuring the load on the probe. In order to verify the performance of the piezoelectric probe force sensor, the bending combined die was specially designed, and the piezoelectric probe force sensor was installed obliquely in the die cavity to test the load of the sheet during bending. After repeated trials, the test results were compared with the empirical formula calculation results, and the test deviation was within the acceptable range. The result shows that the performance of sensor is stable and reliable.

Funds：

校级项目基金资助项目（19KY0502）

李孟祥（1993-），男，硕士研究生 E-mail：1327955992@qq.com 通讯作者：龚红英（1974-），女，博士，教授 E-mail：ghyyw@163.com

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