Design of fan beam optical sensor and its application in mass flow rate measurement of pneumatically conveyed solids

Yang, Li; Zheng, Yongjun; Yue, Hongwei

doi:10.1631/jzus.2005.a1430

Cited by 6 publications

(5 citation statements)

References 5 publications

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“…The maximum pole intensity statistical result (ABE: accumulative back extrusion, CDE: conventional direct extrusion, HE: hot extrusion, CVCDE: continuous variable channel direction extrusion, SE: staggered extrusion, OLTE: online twist extrusion, AABE: accumulative alternating back extrusion, EAMPR: extrusion and multi‐pass rolling, CWE: continuous welding extrusion). [ 39,42–49 ] …”

Section: Resultsmentioning

confidence: 99%

Grain Refinement, Texture Evolution, and Tensile Performance Improvement of AZ91D Magnesium Alloy Processed by Multi‐Cycle Accumulative Back Extrusion

Meng

Jing

et al. 2022

Adv Eng Mater

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Accumulative back extrusion (ABE) process is performed on an AZ91D Mg alloy at 310 °C. Microstructure, texture, and mechanical properties affected by the ABE cycles are elucidated in detail. Results reveal that the initial as‐cast grain structure (≈190 μm) is significantly refined (≈2.98 μm) after being imposed by six ABE cycles. The β‐Mg17Al12 phases undergo fragmentation and spheroidization. The dynamic recrystallization (DRX) process is accelerated through the particle stimulated nucleation (PSN) mechanism during initial deformation. Meanwhile, twins are inclined to occur in barren areas of the second phases and play a role of twinning‐induced dynamic recrystallization (TDRX). Grain refinement is governed by the combined function of PSN, TDRX, continuous dynamic recrystallization (CDRX), and discontinuous dynamic recrystallization (DDRX). Basal textures with low intensities are developed due to the fully developed recrystallized grains. Schmid factor analysis indicates that the {0001} <11–20> basal slip and the {11–22} <11–23> pyramidal slip contribute to ABE deformation. Finally, excellent ultimate tensile strength and fracture elongation are obtained after a three‐cycle ABE process, which are estimated to be 296 MPa and 21.43%, respectively. The resulting tensile performance is attributed to the refined grains, fragmented β‐Mg17Al12 particles, and the weakened basal texture.

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Section: Resultsmentioning

confidence: 99%

Grain Refinement, Texture Evolution, and Tensile Performance Improvement of AZ91D Magnesium Alloy Processed by Multi‐Cycle Accumulative Back Extrusion

Meng

Jing

et al. 2022

Adv Eng Mater

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“…The voltage was chosen by checking the current change from 0.01 until 0.05 at which points the stated voltages were chosen [14,16,17]. We used only one sensor to proceed with the infrared experiment to ensure a constant detected value [20,[72][73][74][75][76][77][78][79]. As we know, infrared can't be seen with the naked eye, we can see the pattern of infrared light coming out from the lens and from the infrared component itself [18,26,33,37,40,41,52,55,56].…”

Section: Experiments Results For Infrared Light Sourcementioning

confidence: 99%

“…The comparison value captured by the sensor for the result without the lens and a convex lens are not so different but they still show a difference of around 0.01 V. In terms of the tests without a lens and with the convex lens, the values captured by the sensor are different; that for the convex lens is less than that without the lens. This happened due to the changing pattern of light when the convex lens was applied but the graph pattern is still the same due to the thickness making the reading from the sensor decrease [20,22,48,49,[72][73][74][75][76][77][78][79]. Base on properties of tissue on the subject are used in this experiment, they have unstable refractive index because of the properties and make the data have different gradient happen and show in Figure 4.3.…”

Section: Experiments Results For Infrared Light Sourcementioning

confidence: 99%

“…Based on observation, light can penetrate many types of materials and the brightness of the light can be reduced after penetrating an object. The value of the light when it passes through an object before exposure to the endpoint must also be considered [2,14,[20][21][22][23]. If the light value is low, then the light cannot pass through the subject and scanning cannot be undertaken.…”

Section: 10 Introductionmentioning

confidence: 99%

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Measurement of the Content of Water Using Light Penetration

et al. 2014

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In this paper we use an electronic component to produce light which is applied in testing soft tissue penetration. We used bio tissue, a slice of apple, and non-bio tissue, paper. The voltage could be adjusted to brighten the light to view the penetration of the subject. The thickness of the tissue was constant and the results showed that the current and voltage were significant as the light penetrated the soft tissue.

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“…So, if every semiconductor laser works, there are 5×5 projection data gathered by detectors at 5×5 orientation angles. In this experimental system [2] , a semiconductor laser with 650nm wavelength, 4mW output power, a collimating lens and an APC circuit is employed. Cylindrical lens embedded in front of a collimating lens transfers the light beam into a 50 o lamellar fan-beam with 2.5mm thickness in turn through the gas-solid two phase flow.…”

Section: Spatial Arrangement Structure Of the Sensorsmentioning

confidence: 99%

Reconstruction of velocity distribution in gas-solid two-phase flow based on two-layer array fan-beam optical sensor

Yang

Yue

et al. 2006

SPIE Proceedings

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This paper presents a novel approach that adopts full-orientated two-layer fan-beam optical sensor to measure the particle velocity. The scanning light source emit a 50 o lamellar fan-beam in turn through the gas-solid two phase flow, and the projection data resulting extinction effect of solid particles are detected at the same time. The profile optical projection data of measured flow field of the two layers can be obtained through being stimulated array light source and detecting light signal at multiple angles in space, and the vertical velocity field can be reconstructed during the course of measurement in terms of two-dimension cross-correlation and backprojection algorithm. In this paper, the design of the sensor including spatial arrangement of the structural parts and basic principle are introduced, the mathematical model utilized for measuring the particle velocity is presented and the experimental results are shown. It provides a new means to reconstruct rapidly velocity field of the gas-solid two-phase flow.

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Design of fan beam optical sensor and its application in mass flow rate measurement of pneumatically conveyed solids

Cited by 6 publications

References 5 publications

Grain Refinement, Texture Evolution, and Tensile Performance Improvement of AZ91D Magnesium Alloy Processed by Multi‐Cycle Accumulative Back Extrusion

Grain Refinement, Texture Evolution, and Tensile Performance Improvement of AZ91D Magnesium Alloy Processed by Multi‐Cycle Accumulative Back Extrusion

Measurement of the Content of Water Using Light Penetration

Reconstruction of velocity distribution in gas-solid two-phase flow based on two-layer array fan-beam optical sensor

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