Research on the piezoelectric torsional effect of a rectangular quartz disc and a novel drilling dynamometer

Gao, Changyin; Wan-quan, LI; Sun, Bingrong

doi:10.1016/j.measurement.2009.11.006

Cited by 9 publications

(5 citation statements)

References 1 publication

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“…Various researchers designed and fabricated the dynamometers with the strain gauge for measuring the cutting force during turning and milling process up to a maximum of 4500 N with a sensitivity of ± 5 N and a cross sensitivity error of less than 1 % [16][17][18][19][20][21][22][23][24][25]. The metrological characteristic of simple square ring shaped force transducer was studied analytically and computationally [26].…”

Section: Introductionmentioning

confidence: 99%

Design, development, calibration, and testing of indigenously developed strain gauge based dynamometer for cutting force measurement in the milling process

Mohanraj¹,

Shankar²,

Rathanasamy³

et al. 2020

JMES

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In this work, a milling dynamometer based on strain gauge with an octagonal and square ring was designed and tested. Strain gauges were attached with the mechanical rings to detect the deformation, during the machining process. Wheatstone bridge circuit was equipped with gauges to acquire the strain as voltage owing to the deformation of mechanical rings when machining takes place. The finite element analysis (FEA) was used to identify the location of maximum deformation and stress. The direction of rings and location of gauges were decided to increase the sensitivity and decrease the cross-sensitivity. Then, the cutting force was acquired through NI 6221 M series data acquisition (DAQ) card. The dynamometer had undergone a cycle of tests to verify its static and dynamic characteristics. The metrological characterization was performed according to the calibration procedure based on ISO 376 – 2011 standard. The cutting force was measured with both the dynamometers through milling experiments based on Taguchi’s L9 orthogonal array and the results were recorded. The measured cutting force varied from 300 N to 550 N. The obtained results depicted that low-cost milling dynamometer was reliable to measure the three component machining force. Overall, the square ring based dynamometer provides the better static and dynamic characteristics in terms of linearity, cross-sensitivity (4%), uncertainty (0.054%), and natural frequency (362.41 rev/s).

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Section: Introductionmentioning

confidence: 99%

Design, development, calibration, and testing of indigenously developed strain gauge based dynamometer for cutting force measurement in the milling process

Mohanraj¹,

Shankar²,

Rathanasamy³

et al. 2020

JMES

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“…Gao et al . (2003, Gao and Sun, 2004, 2010) solve stresses caused by torsion of piezoelectric crystal, obtaining distribution of torsion stress field and nonlinear polarization electric field. Shang (2014) analyzes force-electric transform effect of three-dimensional piezoelectric crystals, presenting a method of splitting electrode for six-dimensional force measurement.…”

Section: Introductionmentioning

confidence: 99%

A novel calibration method based on Kirchhoff theory for piezoelectric dynamometer

Zhang

Ren

et al. 2018

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Purpose This paper aims to improve calibration and force measurement accuracy of multi-sensors’ piezoelectric dynamometer used in thrust measurement of rocket/air vehicle engine. Design/methodology/approach This paper presents a mapping solution method of sensors’ outputs based on the Kirchhoff thin plate theory, builds force-deformation differential equations with specific boundary conditions, uses finite difference (FD) method to solve the equations and analyzes outputs in offset loading forces in four-sensor square layout in main direction. The resultant force deviations calculated by the Kirchhoff theory are optimized with sequence quadratic program (SQP) method, and a calibration method of multiple loading points (MLP) based on the Kirchhoff theory is presented. Experiments of static calibration and verification are complemented to contrast the novel and single loading point (SLP) calibration method. Findings Experiments of static calibration and its verification show that at a loading force of 5,000N, the average resultant force deviations with MLP is 17.87N (0.35% FS) compared with single loading point method 26.45N (0.53% FS), improving calibration and measurement precision. Originality value A novel calibration method with MLP is presented. Force distributions of multiple sensors of main direction in piezoelectric dynamometer with offset loading force are solved with the Kirchhoff theory. The resultant force deviations calculated by Kirchhoff theory are optimized with the SQP method.

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“…Piezoelectric quartz crystals [ 10 ], based on piezoelectric effect [ 11 ], are used in dynamometers and force-sensitive elements [ 12 , 13 , 14 ]. Moisture content indeed affected piezoelectric properties [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

A Novel Strategy to Eliminate the Influence of Water Adsorption on Quartz Surfaces on Piezoelectric Dynamometers

Jia

Jin

Liu

et al. 2016

Sensors

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Abstract:Piezoelectric dynamometers are out of use in high humidity. Experimental results showed that piezoelectric coefficients measured by the force-induced charges method initially fluctuated in a small range and then was unstable, and they could not be measured at high relative humidity (RH). The traditional shielding method-insulation paste was not quiet convenient, and it even added the weight of piezoelectric dynamometers. In this paper, a novel strategy that eliminates the influence of water adsorption with quartz surfaces on piezoelectric dynamometers was proposed. First, a water-quartz model was developed to analyze the origin of the RH effect. In the model, water vapor, which was adsorbed by the quartz sheet side surface, was considered. Second, equivalent sheet resistor of the side surface was researched, while the relationship of the three R's (Roughness, RH, and Resistor) was respectively discussed based on the adsorption mechanism. Finally, fluorination technology was skillfully adapted to each surface of quartz sheets to shield the water vapor. The experiment verified the fluorination strategy and made piezoelectric dynamometers work in high humidity up to 90%RH successfully. The results showed that the presented model above was reasonable. In addition, these observations also drew some useful insights to change the structure of piezoelectric dynamometers and improve the properties.

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Research on the piezoelectric torsional effect of a rectangular quartz disc and a novel drilling dynamometer

Cited by 9 publications

References 1 publication

Design, development, calibration, and testing of indigenously developed strain gauge based dynamometer for cutting force measurement in the milling process

Design, development, calibration, and testing of indigenously developed strain gauge based dynamometer for cutting force measurement in the milling process

A novel calibration method based on Kirchhoff theory for piezoelectric dynamometer

A Novel Strategy to Eliminate the Influence of Water Adsorption on Quartz Surfaces on Piezoelectric Dynamometers

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