Investigation on Unitary Piezoelectric Four-Component Cutting Dynamometer

2009 ◽  
Vol 626-627 ◽  
pp. 93-98
Author(s):  
G.J. Qu ◽  
Min Qian ◽  
J. Zhang ◽  
Q. Xing
Keyword(s):  
Quartz Crystal ◽  
Piezoelectric Effect ◽  
High Sensitivity ◽  
Cutting Process ◽  
Structure Parameters ◽  
Good Linearity ◽  
Secondary Purpose ◽  
Torsion Effect ◽  
Transverse Effect

The purpose of this paper is to show the investigation on a type of unitary piezoelectric four-component cutting dynamometer. Based on piezoelectric effect of quartz crystal, such as torsion effect, transverse effect, lengthways effect and shearing effect, horizontal moment and three-direction orthogonal forces carried on the dynamometer during cutting process can be measured simultaneously. The dynamometer can be used to measure forces and horizontal moments in drilling, grinding, milling, turning. A secondary purpose is to optimize structure parameters of the dynamometer by ANSYS. The dynamometer has good performance with high sensitivity, good linearity and repeatability and low crosstalk after optimizing.

High-sensitivity sensing in bare Ge-Sb-Se chalcogenide tapered fiber with optimal structure parameters

2021 ◽  
Vol 559 ◽  
pp. 120686
Author(s):  
Xiaomei Wang ◽  
Jingxiang Su ◽  
Yingying Wang ◽  
Chenfeng Yang ◽  
Shixun Dai ◽  
...  
Keyword(s):  
High Sensitivity ◽  
Optimal Structure ◽  
Structure Parameters ◽  
Tapered Fiber

Analysis and Research of Piezoelectric Dynamic Weighing Sensor

2011 ◽  
Vol 483 ◽  
pp. 643-646 ◽  
Author(s):  
Li Bo Zhao ◽  
Jian Qiang Liang ◽  
Yu Long Zhao ◽  
Jian Zhu Wang ◽  
Wei Chen ◽  
...  
Keyword(s):  
Wall Thickness ◽  
Quartz Crystal ◽  
Piezoelectric Effect ◽  
Fem Simulation ◽  
Ansys Software ◽  
Critical Dimensions ◽  
Load Carrying ◽  
Piezoelectric Coupling ◽  
Influence Curve ◽  
Dynamic Weighing

The Kistler company has invented piezoelectric dynamic weighing sensors which are applied to determine dynamically axle load, speed and gross weight of the vehicle based on piezoelectric effect of quartz crystal. They mainly consist of load-carrying beams and sensitive elements. Focusing on the control of preload in design and fabrication, finite element method (FEM) is applied with ANSYS software to optimize structural sizes. The influence curve of the structural dimensions of load-carrying beam on the preload is analyzed. With the piezoelectric coupling analysis function, the preload influence on the sensor sensitivity is researched. FEM simulation results show that the critical dimensions of load-carrying beam as well as the deformation and wall thickness of cavity have significant impact on the preload. Further studies show that the sensor has the highest sensitivity with the reasonable deformation and wall thickness of the cavity. In this paper, a sensor with range of 150 kN has the highest sensitivity at the wall thickness of 2 mm and the deformation of 0.14 mm.

scholarly journals New inhibitors for copper corrosion

2001 ◽  
Vol 73 (12) ◽  
pp. 1861-1869 ◽  
Author(s):  
Gy. Vastag ◽  
E. Szöcs ◽  
A. Shaban ◽  
E. Kálmán
Keyword(s):  
Scanning Probe Microscopy ◽  
Corrosion Inhibitors ◽  
Quartz Crystal ◽  
High Sensitivity ◽  
Scanning Probe ◽  
Copper Corrosion ◽  
Thiazole Derivatives ◽  
Single Crystal Electrode ◽  
Copper Corrosion Inhibition

The study of the effectiveness of several potential copper corrosion inhibitors in acidic media was studied. The investigated thiazole derivative functional groups contain heterocyclic atoms such as nitrogen, sulfur, and oxygen. Thiazole derivatives, 5-benzylidene-2,4-dioxotetrahydro-1,3-thiazole (BDT) 5-(4¢-isopropylbenzylidene)-2,4-dioxotetrahydro-1,3-thiazole (IPBDT), 5-(3¢-thenylidene)-2,4-dioxotetrahydro-1,3-thiazole (TDT), and 5-(3¢,4¢-dimetoxybenzylidene)-2,4-dioxotetrahydro-1,3-thiazole (MBDT) were tested for copper corrosion inhibition properties. The electrolyte solution was 0.1 M Na2SO4. In situ information on corrosion and inhibition processes can be obtained using different techniques. Electrochemical measurements (EIS), in situ scanning probe microscopy (SPM), in addition to quartz crystal microbalance (QCM) measurements were applied. Those methods are very useful owing to their high sensitivity and resolution. Dynamic STM and AFM measurements on Cu(111) single-crystal electrode with and without the addition of some inhibitors were performed. The presence of the isopropyl group in the case of IPBDT produced far better protection against copper corrosion in acidic sulfate-containing media than the rest of the derivatives.

scholarly journals Functionalised Au Coated Iron Oxide Nanocomposites Based Reusable Immunosensor for AFB1 Detection

2015 ◽  
Vol 2015 ◽  
pp. 1-15 ◽  
Author(s):  
Ruchika Chauhan ◽  
T. Basu
Keyword(s):  
Iron Oxide ◽  
Quartz Crystal ◽  
Storage Stability ◽  
High Sensitivity ◽  
Self Assembled Monolayer ◽  
External Magnet ◽  
Piezoelectric Immunosensor ◽  
Cereal Samples ◽  
Iron Oxide Core ◽  
And Storage

A reusable sandwiched electrochemical piezoelectric immunosensor has been developed for aflatoxin B1 (AFB1) detection using gold coated iron oxide core-shell (Au-Fe3O4) nanostructure. The monoclonal anti-aflatoxin antibody (aAFB1) was immobilized on self-assembled monolayer of 4-aminothiophenol on gold coated quartz crystal to fabricate immunoelectrode (BSA/aAFB1/4-ATP/Au). In addition, secondary rabbit-immunoglobulin antibodies (r-IgGs) functionalized with Au-Fe3O4NPs via cysteamine (r-IgG-Cys-Au-Fe3O4) were allowed to interact with AFB1. Both competitive and noncompetitive strategies were employed and a competition between coated AFB1 and free AFB1 was carried out. The competitive mode shows higher linear range (0.05 to 5 ng mL−1) than the noncompetitive one (0.5 to 5 ng mL−1), high sensitivity 335.7 µA ng−1 mL cm−2, and LOD 0.07 ng mL−1. The fabricated immunosensor has been tested using cereal samples spiked with different concentrations of AFB1. The developed competitive immunoelectrode displays good reproducibility, and storage stability and regenerated with negligible loss in activity through removal of the r-IgG-Cys-Au-Fe3O4conjugate using a strong external magnet.

Diagnosis and genotyping of Plasmodium falciparum by a DNA biosensor based on quartz crystal microbalance (QCM)

2011 ◽  
Vol 49 (8) ◽  
Author(s):  
Tiparat Potipitak ◽  
Warunee Ngrenngarmlert ◽  
Chamras Promptmas ◽  
Sirinart Chomean ◽  
Wanida Ittarat
Keyword(s):  
Quartz Crystal Microbalance ◽  
Malaria Infection ◽  
Quartz Crystal ◽  
High Sensitivity ◽  
Cost Effective ◽  
Dna Biosensor ◽  
Dual Function ◽  
Label Free ◽  
Free Dna ◽  
Nanogram Level

AbstractMalaria infection withA label-free DNA biosensor based on quartz crystal microbalance (QCM) to diagnose and genotypeThe newly developed QCM was tested for its diagnosis ability using both malaria laboratory strains and clinical isolates. The biosensor was sensitive at the sub-nanogram level, specific for onlyThe dual function QCM was successfully developed with high sensitivity and specificity, and was cost-effective, stable and field adaptable.

Experimental Study on Tertiary Piezoelectric Effect of X-Cut Quartz Crystal

2014 ◽  
Vol 620 ◽  
pp. 134-139
Author(s):  
He Bin Zhang ◽  
Zhong Hua Zhang ◽  
Ya Ding Jin ◽  
Hui Lun Jiang ◽  
Lin Jun Fan ◽  
...  
Keyword(s):  
Quartz Crystal ◽  
Piezoelectric Coefficient ◽  
Piezoelectric Effect ◽  
Standard Uncertainty ◽  
Engineering Practice ◽  
New Approach ◽  
Piezoelectric Quartz ◽  
Piezoelectric Effects ◽  
Piezoelectric Quartz Crystal ◽  
The Relationship

This Paper has analyzed the relationship between the generation of multiple piezoelectric effects and boundary conditions of piezoelectrics and the experiments have studied tertiary piezoelectric effect of piezoelectric quartz which is applied extensively in engineering practice. We processed our experiment by piezoelectric quartz crystal unit made by two pieces of X-cut piezoelectric quartz, parallel connected it to a capacitor with the equivalent capacitance of about 1,000 times of that of piezoelectric quartz crystal unit and then got the result of pure primary piezoelectric effect excluding tertiary induced effect; then compared it with conventional primary piezoelectric effect and concluded that tertiary piezoelectric effect of piezoelectric quartz is about 1.7% of primary piezoelectric effect; thus quantified longitudinally tertiary piezoelectric effect of piezoelectric quartz crystal, concluded that piezoelectric coefficient of tertiary effect of X-cut piezoelectric quartz is about 0.04 pC/N by experiment and got relative uncertainty and standard uncertainty of the results by such experiment methods respectively as 9.49×10-3and 1.37×10-2. This study on tertiary piezoelectric effect has provided a new approach for improving precision and sensitivity of piezoelectric sensors.

Research and Simulation on Metal Cutting Process

2012 ◽  
Vol 479-481 ◽  
pp. 531-535
Author(s):  
Xue Jun Nie ◽  
Li Wang
Keyword(s):  
Metal Cutting ◽  
Mathematic Model ◽  
Cutting Process ◽  
Structure Parameters

A method about analysis and simulating metal cutting process on lathe is introduced through establishing the system’s mathematic model by using MATLAB tools. The effects of cutting and machine tool’s structure parameters on the performance of metal cutting process are obtained, which will provide a theoretic basement for optimizing the performance of metal cutting process.

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