Vertical Vibration Conveyor Vibration Testing

2011 ◽  
Vol 230-232 ◽  
pp. 872-876
Author(s):  
Hong Yan Hao ◽  
Qing Shan Ji
Keyword(s):  
Fault Detection ◽  
Eddy Current ◽  
Measurement System ◽  
Test Object ◽  
Block Diagram ◽  
Vertical Vibration ◽  
Current Sensor ◽  
Vibration Testing ◽  
Molding Sand ◽  
Transformer Sensor

In this paper, the test object was vertical vibration conveyor of transporting molding sand in the foundry. Using eddy current sensor and the differential transformer sensor respectively measured for the vertical vibration and rotation vibration, and measurement system block diagram was given. It provided the basis of the design, operation, and fault detection about vibration machines.

Preliminary Research on the Measurement of Oxide Layer of ELID Based on the Laser Sensor and the Eddy Current Sensor

2012 ◽  
Vol 502 ◽  
pp. 3-6
Author(s):  
Dang Li Wang ◽  
Sheng Ke Ning ◽  
Bao Ji Ma
Keyword(s):  
Electron Microscope ◽  
Oxide Layer ◽  
Eddy Current ◽  
Measurement System ◽  
Current Sensor ◽  
Grinding Wheel ◽  
Laser Sensor ◽  
Wheel Surface ◽  
Eddy Current Sensor ◽  
Preliminary Research

In order to measure thickness and Study on growth behaviors of oxide layers on grinding wheel surface in ELID, the measurement system consisted of a laser sensor and an eddy current sensor was constructed to do a preliminary research on oxide layer replaced by rust. Through the comparison of the values of the thickness obtained by measurement system and the electron microscope of high precision, in this paper, the accuracy of the measurement result and the feasibility of the system ware verified.

Experimental Investigation of Static Characteristics on Eddy Current Sensor for External Cylindrical Grinding Measurement System

2011 ◽  
Vol 460-461 ◽  
pp. 3-8 ◽  
Author(s):  
Yi Cao ◽  
Hong Ge Sun ◽  
Yi Zang ◽  
Xiu Juan Li
Keyword(s):  
Experimental Investigation ◽  
Eddy Current ◽  
Measurement System ◽  
Experimental Results ◽  
Current Sensor ◽  
Static Characteristics ◽  
Cylindrical Grinding ◽  
Eddy Current Sensor ◽  
External Cylindrical Grinding

In order to investigate the static characteristics of eddy current sensor (ECS) influenced by cylindrical diameter, material and displacement of the target workpiece, some experiments were carried out. Firstly, the theoretical principles of ECS were recalled for explaining the related parameters. The experiment setup was then introduced and some features including linearity, resolution and sensitivity were tested by the experimental instrument and calibrated. Finally, the experimental results were obtained and the influence elements were discussed in the paper.

Inspection of Surface Rolled Sintered Gears using Eddy-Current Sensor

2013 ◽  
Vol 133 (5) ◽  
pp. 300-306
Author(s):  
Tsutomu Mizuno ◽  
Yuichi Asato ◽  
Sho Goto ◽  
Takashi Watanabe ◽  
Teruie Takemasu ◽  
...  
Keyword(s):  
Eddy Current ◽  
Current Sensor ◽  
Eddy Current Sensor

scholarly journals Eddy Current Sensor System for Tilting Independent In-Process Measurement of Magnetic Anisotropy

Sensors ◽  
2021 ◽  
Vol 21 (8) ◽  
pp. 2652
Author(s):  
Frank Wendler ◽  
Rohan Munjal ◽  
Muhammad Waqas ◽  
Robert Laue ◽  
Sebastian Härtel ◽  
...  
Keyword(s):  
Magnetic Anisotropy ◽  
Eddy Current ◽  
Digital Signal ◽  
Production Equipment ◽  
Sensor System ◽  
Current Sensor ◽  
Cold Forming ◽  
Eddy Current Sensor ◽  
Two Samples ◽  
Internal Mechanical Stress

Modern production equipment is based on the results of quality control as well as process parameters. The magnetic anisotropy of materials is closely connected to internal mechanical stress by the Villari effect, and also to hardening effects due to plastic deformations, and could therefore provide an interesting basis for process control. Nevertheless, the analysis of anisotropic properties is extremely sensitive to sensor and workpiece misalignments, such as tilting. In this work, a novel eddy current sensor system is introduced, performing a non-contact measurement of the magnetic anisotropy of a workpiece and realizing a separation and correction of tilting effects. The measurement principle is demonstrated with the example of two samples with different magnetic anisotropy values induced by cold forming. Both samples are analyzed under different tilt angles between the sensor axis and the surface of the workpiece. In this work, digital signal processing is demonstrated on the acquired raw data in order to differentiate the effects of tilt and of anisotropy, with the use of preliminary results as an example of two prepared samples.

scholarly journals Determination of Surface Crack Orientation Based on Thin-Skin Regime Using Triple-Coil Drive–Pickup Eddy-Current Sensor

2021 ◽  
Vol 70 ◽  
pp. 1-9
Author(s):  
Mingyang Lu ◽  
Xiaobai Meng ◽  
Ruochen Huang ◽  
Liming Chen ◽  
Zezhi Tang ◽  
...  
Keyword(s):  
Eddy Current ◽  
Surface Crack ◽  
Current Sensor ◽  
Crack Orientation ◽  
Eddy Current Sensor ◽  
Thin Skin

Analysis of Eddy-Current Measurement System for Residual Stress Assessment in Stainless Steel Grade 304

2015 ◽  
Vol 659 ◽  
pp. 623-627 ◽  
Author(s):  
Cherdpong Jomdecha ◽  
Isaratat Phung-On
Keyword(s):  
Residual Stress ◽  
Stainless Steel ◽  
Eddy Current ◽  
Measurement System ◽  
System Analysis ◽  
Stress Measurement ◽  
Steel Grade ◽  
Current Measurement ◽  
Residual Stress Measurement ◽  
Stress Assessment

The objective of this paper is an analysis of statistical discreteness and measurement capability of an eddy-current measurement system for residual stress assessment in stainless steel Grade 304 (SS304). Cylindrical specimens with 50 mm in diameter and 12 mm thickness were prepared to generate residual stress by Resistance Spot Welding at which the welding currents were set at 12, 14, and 16 kA. The eddy-current measurement system was including a probe with frequency range of 0.1 to 3 MHz and an eddy current flaw detector. They were performed by contacting the probe on the specimen. The measurements were performed particularly in the vicinity of heat affected zone (HAZ). In order to determine the results of the residual stress measurement, the calibration curves between static tensile stress and eddy current impedance at various frequencies were accomplished. The Measurement System Analysis (MSA) was utilized to evaluate the changed eddy-current probe impedance from residual stress. The results showed that using eddy current technique at 1 MHz for residual stress measurement was the most efficient. It can be achieved the Gauge Repeatability & Reproducibility %GR&R at 16.61479 and Number of Distinct Categories (NDC) at 8. As applied on actual butt welded joint, it could yield the uncertainty of ± 58 MPa at 95 % (UISO).

Design and Implement of High-Accuracy On-Line Metal Thickness Measuring Instrument Based on NiosII Processor

2013 ◽  
Vol 834-836 ◽  
pp. 930-934
Author(s):  
Shou Liang Yang ◽  
Bao Liang Yang
Keyword(s):  
Eddy Current ◽  
Low Cost ◽  
High Accuracy ◽  
Resolving Power ◽  
Current Sensor ◽  
Measuring Instrument ◽  
Precision Data ◽  
Eddy Current Sensor ◽  
Metal Thickness ◽  
On Line

The paper proposes a new design of high-accuracy On-line Metal Thickness Measuring Instrument, which was based on EP2C20 series FPGA chip, through adding NiosII soft processor and other interfaces to FPGA, equipped with high precision data collection system and TFT LCD module and so on. The key hardware blocks schematics and components of the RC Oscillation Circuit,eddy current sensor Circuit,rectifier and filter Circuit,A/D converting circuit,FPGA Circuit are described,software flow charts and sample codes are given. According to practice, The measurement range of this system is 1~100 mm and the resolving power is 0.1 μm. degree of linearity is 1%, The system has many features including small volume of hardware, low cost, high detecting precision, convenient operating, high intelligent and so on, leading to broad and bright future. Key words: NiosII processor; eddy current sensor; metal thickness

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