Characterization of dimensional features of mesoscale component using capacitive sensor

Murugarajan, A.; Samuel, G.L.

doi:10.1007/s00170-014-6573-1

Cited by 6 publications

(2 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Yeong et al [20] used a profilometer and confocal microscope to profile rectangular microchannels in a falling film reactor. Murugarajan et al [21] employed a high-resolution noncontact capacitive sensor for characterizing mesoscale dimensional features. Li et al [22] were using revolved double laser beam to measure inner dimension and geometrical features of workpieces during manufacturing.…”

Section: Characterization Methodology Of Channel Geometrymentioning

confidence: 99%

Geometric measurement and characterization of a microchannel heat exchanger for performance validation

Yih

Wang

2020

Eng. Res. Express

View full text Add to dashboard Cite

With substantial size and performance advantages, microchannel heat exchangers have been attracting increasing attention for various energy recovery and conversion processes. While much research and recent studies focus on their applications and performance, few studies have been devoted to the measurement and dimensional accuracy of actual microchannels in use. In this study, in-depth geometric characterization of a microchannel heat exchanger manufactured using standard photochemical etching and diffusion bonding processes is carried out. The measured channel dimensions are then compared with the design values, which can help better interpret experiment data of the heat exchanger for model validation. Two nondestructive methods were developed to measure cross-sectional areas and perimeters of the microchannels. The first method uses a stereoscopic microscope to take images of the exhaust channels at one end of the microchannel heat exchanger. An image processing routine was developed in MATLAB to measure the exhaust channel dimensions. For the second method, an optical profilometer was used to scan both the exhaust and oil channels from sample shims. Two additional MATLAB routines were developed to process the obtained 3D shim images with the capability of accounting for the bow in the shims. As results, both methods have close agreement on the measured channel dimensions. On average, the cross-sectional areas of the exhaust channels vary more significantly between individual shims due to the nature of the batch photochemical etching process; and the produced exhaust and oil channels are 11% and 8% smaller than the design values. These findings help explain the emerged discrepancy between modeling and experimental data.

show abstract

Section: Characterization Methodology Of Channel Geometrymentioning

confidence: 99%

Geometric measurement and characterization of a microchannel heat exchanger for performance validation

Yih

Wang

2020

Eng. Res. Express

View full text Add to dashboard Cite

show abstract

“…Several studies have been carried out around the use of capacitors in the manufacture of chemical sensors based on the field effect, searching more compact dimensional characteristics and more precise experimental resources [7][8][9]. Murugarajan and Samuel [10] used a high-resolution capacitive sensor for mesoscale dimensional characterization. A miniaturized experimental setup was developed using the high precision capacitive sensor and XYZ linear stage to perform the measurement.…”

Section: Introductionmentioning

confidence: 99%

Design, development and application of a real-time capacitive sensor for automatically measuring liquid level

Bento

Silva²,

Dias³

et al. 2019

SN Appl. Sci.

View full text Add to dashboard Cite

In the present study a real-time capacitive sensor based on a capacitance step method is designed, developed and applied on measuring the liquid level by immersion. The capacitive sensor consists of two electrodes from copper plated phenolite plates separated by a gap distance and mounted inside a non-conductive storage tank. Water is used as the dielectric material. The analyzed sensor behavior with liquid level variation is semi-linear and obtained in function of the output voltage variation by using proper signal conditioning circuit. For converting the voltage variation into level variation, a parallel R-C circuit is used instead of conventional bridge circuit. Under suitable parameter settings it provided good reading accuracy. The experimental results demonstrate the high efficiency of the proposed model, which confirm the satisfactory performance of the capacitive sensor for liquid level measurement. The sensor presents an excellent ease of construction and installation, linked to the good measurements precision and high autonomy of system operation. The behavior experiments under different salt concentrations show that the water chemical composition does not interfere on the sensor operation. The proposed model exhibits a promising employment in several applications, such as control equipment for irrigation, biomedical area-in the interaction between antibody-antigen or protein-DNA, aerospace and pharmaceutical industry, gas sensors, and automation solutions.

show abstract

Application of sophisticated sensors to advance the monitoring of machining processes: analysis and holistic review

Kandavalli

Khan²,

Iqbal

et al. 2023

Int J Adv Manuf Technol

View full text Add to dashboard Cite

Characterization of dimensional features of mesoscale component using capacitive sensor

Cited by 6 publications

References 21 publications

Geometric measurement and characterization of a microchannel heat exchanger for performance validation

Geometric measurement and characterization of a microchannel heat exchanger for performance validation

Design, development and application of a real-time capacitive sensor for automatically measuring liquid level

Application of sophisticated sensors to advance the monitoring of machining processes: analysis and holistic review

Contact Info

Product

Resources

About