Research center of biomanufacturing in Xi’an Jiaotong University

Wang, Ling; Li, Dichen; He, Jiankang; Lu, Bingheng

doi:10.1007/s42242-018-0026-x

Cited by 16 publications

(21 citation statements)

References 134 publications

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“…Since the number of fibers in a single yarn is far more than 50, it can be considered as a large sample in statistics. If the fiber diameter is normally distributed, then T test is used to make unilateral interval hypothesis [21].…”

Section: Evaluation Of Fiber Quality and Diameter Interval Estimationmentioning

confidence: 99%

Quick measurement of all filaments' diameters in E-glass yarn by Image-Pro Plus

Zheng

Yang

Wang

2020

Journal of Industrial Textiles

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At present, there are many methods to measure the diameters of filaments in E-glass yarn, but only the average diameter is reported, which cannot reflect all the filaments in the yarn. The methods based on physical principle are not intuitive, the data based on the longitudinal fiber diameter image measurement method are not comprehensive, the observation on the cross-section image of yarn based on slice-making is time-consuming and labor-intensive, and requires manual measurement or self-developed software application. In this article, Keyence VK-X110 3D laser morphometry microscope was used to quickly obtain the cross-section image of glass filament yarn without making a slice of E-glass yarn, and Image-Pro Plus was used to measure all the filaments' diameters in the yarn automatically. The measurement data and analysis show that under the condition of completely processing all the filaments' image, minor axis of filament cross-section is approximate to the filament diameter. This method is not only able to verify whether glass filament yarn meets the quality criteria of ASTM D578-00, but also provides the diameter distribution of all the filaments in an E-glass yarn. In addition, the data support more comprehensive evaluation standard for the quality of glass filament spinning.

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Section: Evaluation Of Fiber Quality and Diameter Interval Estimationmentioning

confidence: 99%

Quick measurement of all filaments' diameters in E-glass yarn by Image-Pro Plus

Zheng

Yang

Wang

2020

Journal of Industrial Textiles

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“…Solution speed and quality of GA far exceed conventional methods. 23 GA was used in this paper for the optimal design of double-chamber compound configurations. This method defines a tuple 20–23 as where C is the individual coding method; E is the individual fitness evaluation function; P 0 is the initial population; M is the population size; Φ is the selection operator; Γ is the crossover operator; Ψ is the mutation operator; and T is the algorithm termination condition.…”

Section: Parameter Optimizationmentioning

confidence: 99%

“…Each individual in binary coding scheme is represented as where ℓ bit binaries are represented for a gene, and a total of m genes. The coding function 23 is where v j and u j stand for the upper and lower limit, respectively, of real range for the j th gene. Even though the binary coding scheme is widely used in GA, a “Hamming cliff” is still a shortcoming.…”

Section: Parameter Optimizationmentioning

confidence: 99%

“…To overcome the scaling problem of proportional fitness calculation and premature convergence problem of selection, which leads to rapid narrowing of search bands, 23 the fitness allocation method, which is based on ranking and selection pressure and controlled by population uniform scale, was used in this paper. The selection method used in this paper was tournament selection.…”

Section: Parameter Optimizationmentioning

confidence: 99%

“…The selection method used in this paper was tournament selection. Selection intensity, loss of diversity and selection variance are 23 where Tour stands for competition scale.…”

Section: Parameter Optimizationmentioning

confidence: 99%

See 2 more Smart Citations

Filtering performance and optimization of double-chamber compound hydraulic attenuators

Yang

Deng

2017

Proceedings of the Institution of Mechanical Engineers, Part C:

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At present, double expansion chamber structures are widely used in the field of acoustic attenuation, and two kinds of double-chamber compound structures for hydraulic attenuators are proposed in this paper. A one-dimensional analytical approach was developed to predict the pressure pulsation attenuation performance of these two structures, and comparisons of insertion loss predictions with experimental results illustrated that the one-dimensional approach is suitable for accurate prediction among the research frequency band. This approach was then used to investigate the effects of porosity and geometrical parameters on the pressure pulsation performance of these two double-chamber compound hydraulic attenuators. To optimize the pressure pulsation attenuation performance at the backwash frequency, parameter optimization was performed for these double-chamber compound structures, and a genetic algorithm based on double-precision floating-point encoding was proposed. The results showed that the range of attenuation frequency bands was widened; however, the effect on low frequency filtering characteristics was limited. The insertion loss of the second structure, which had a partially perforated tube, exhibits a superposition of dome attenuation and axial resonance in the plane wave region. By choosing the length and location of the perforated section to match resonances with the troughs of the pulsation attenuator, a desirable broadband pressure pulsation attenuation can be obtained.

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