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Hole quality in longitudinal–torsional coupled ultrasonic vibration assisted drilling of carbon fiber

Guofeng MA, Renke KANG, Zhigang DONG, Sen YIN, Yan BAO, Dongming GUO

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 4,   Pages 538-546 doi: 10.1007/s11465-020-0598-y

Abstract: characteristics, CFRP composites are considered difficult-to-cut materials and are prone to generating serious holeFurthermore, LTC-UAD can decrease the delamination and burr factors and improve the surface quality ofthe hole wall.

Keywords： longitudinal–torsional coupled     ultrasonically drilling     CFRP     thrust force     hole quality    

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Improving hole transfer of boron nitride quantum dots modified PDI for efficient photodegradation

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 11,   Pages 1718-1727 doi: 10.1007/s11705-023-2319-7

Abstract: In recent years, organic photocatalyst under visible-light absorption has shown significant potential for solving environmental problems. However, it is still a great challenge for constructing a highly active organic photocatalyst due to the low separation efficiency of photogenerated carriers. Herein, an effective and robust photocatalyst perylene-3,4,9,10-tetracarboxylic diamide/boron nitride quantum dots (PDI/BNQDs), consisting of self-assemble PDI with π–π stacking structure and BNQDs, has been constructed and researched under visible light irradiation. The PDI/BNQDs composite gradually increases organic pollutant photodegradation with the loading amount of BNQDs. With 10 mL of BNQDs solution added (PDI/BNQDs-10), the organic pollutant photodegradation performance reaches a maximum, about 6.16 times higher with methylene blue and 1.68 times higher with ciprofloxacin than that of pure PDI supramolecular. The enhancement is attributed to improved separation of photogenerated carriers from self-assembled PDI by BNQDs due to their preeminent ability to extract holes. This work is significant for the supplement of PDI supramolecular composite materials. We believe that this photocatalytic design is capable of expanding organic semiconductors’ potential for their applications in photocatalysis.

Keywords： PDI     boron nitride     quantum dots     photocatalysis     hole transfer    

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Fracture behavior of two non-symmetrical collinear cracks emanating from an elliptical hole in a piezoelectric

Junhong GUO, Zixing LU

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 3,   Pages 296-300 doi: 10.1007/s11465-011-0236-9

Abstract: conformal mapping, the problem of two non-symmetrical collinear cracks emanating from an elliptical holeelectric loading and anti-plane mechanical loading, which allowed us to take the electric field inside the hole

Keywords： piezoelectric materials     elliptical hole     semi-permeable crack     energy release rate     analytic solution    

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The influence of hand hole on the ultimate strength and crack pattern of shield tunnel segment joints

Shaochun WANG, Xi JIANG, Yun BAI

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 5,   Pages 1200-1213 doi: 10.1007/s11709-019-0546-2

Abstract: The hand hole acts as a weak point and initial damage in the segment joint especially when the circumferentialThe experiment results show that the hand hole becomes the weakest point of the segment joint under ultra-highDifferent types and sizes of the hand hole have different degree of influences on the structural behavior

Keywords： shield tunneling     structural synthetic fiber concrete     hand hole     segment joint     ultimate bearing capacity    

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characteristic evaluation and interpolation reconstruction for surface topography of drilled composite hole

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 4,   Pages 840-854 doi: 10.1007/s11465-021-0643-5

Abstract: improved fractal interpolation model is proposed to reconstruct the surface topography of composite holeHole profiles in 24 directions are measured.The maximum and minimum fractal dimension of the hole wall are 1.36 and 1.07, whereas the maximum and

Keywords： surface topography     fractal evaluation     fractal interpolation     reconstruction     composite    

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Effects of Structure of Opening Hole in Gas Distributor on Detained Mass of Material for Fluidized Drying

Liu Wei,Tang Wencheng

Strategic Study of CAE 2006, Volume 8, Issue 6,   Pages 41-43

Abstract: In order to acquire the effect law of structure of opening hole in gas distributor on detained mass ofThe curves of detained mass of material for drier with vertical-hole distributor and tithed-hole distributorBased on the result, the relationship data of drier with tilted-hole distributor were determined betweenthe production capacity and the hole ratio of distributor.In addition, changing the hole shape of distributor from vertical-hole to tilted-hole and adding the

Keywords： inert particles     fluidized drying     gas distributor     hole shape     hole ratio     detained mass of material    

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Blasting Technologies of Decreasing Vibration in Subway Tunnel Underpass Adjacent Upper Buildings

Fang Junbo

Strategic Study of CAE 2014, Volume 16, Issue 11,   Pages 58-64

Abstract: , in order to insure the safety of the upper buildings, technologies of parallel cut with big empty hole

Keywords： blasting design     parallel cut     big empty hole     delay- time initiation     short- hole blasting    

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Effects of Structure of Opening Hole in Gas Distributor on Drying Property for Fluidized Bed Drier

Liu Wei,Tang Wencheng

Strategic Study of CAE 2006, Volume 8, Issue 2,   Pages 47-50

Abstract: the hydromechanics and heat transfer property of inert particles fluidized bed drier between vertical-holedistributor and titled-hole distributor, the drying processe of detergent suspending liquor was experimentedThe experimental results show that the structure of opening hole in gas distributor has a dual effectCompared with vertical-hole distributor, titled-hole distributor will increase the flow resistance of

Keywords： gas distributor     structure with opening hole     inert particles     fluidized bed     drying property    

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Probabilistic analysis of secant piles with random geometric imperfections

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 3,   Pages 682-695 doi: 10.1007/s11709-021-0703-2

Abstract: An ultrasonic cross-hole test was performed during the construction of secant piles in a launching shaft

Keywords： secant piles     ultrasonic cross-hole testing     probabilistic analysis     reliability-based design     random    

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The Vibration Testing Analysis of Chamber & Deep-hole Pre-splitting Blasting

Shen Zhenyu,Wang Xuguang,Yu Yalun,Liu Honggang

Strategic Study of CAE 2006, Volume 8, Issue 3,   Pages 70-74

Abstract: >The vibration testing analysis of blasting in Tai-Chang freeway show that it is chamber & deep-holeseismic effect of chamber blasting, so it effectively solves some problems of slope stability, slope quality

Keywords： chamber blasting     deep-hole pre-splitting blasting     blasting vibration     vibration testing analysis    

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From total quality management to Quality 4.0: A systematic literature review and future research agenda

Frontiers of Engineering Management 2023, Volume 10, Issue 2,   Pages 191-205 doi: 10.1007/s42524-022-0243-z

Abstract: Quality 4.0 is an emerging concept that has been increasingly appreciated because of the intensificationIt deals with aligning quality management practices with the emergent capabilities of Industry 4.0 toimprove cost, time, and efficiency and increase product quality.concept, Quality 4.0 implementation, quality management in Quality 4.0, and Quality 4.0 model and applicationthe quality curve theory, and highlight future research opportunities.

Keywords： quality management     Quality 4.0     Industry 4.0     literature review     predictive quality    

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Analysis of stress and failure in rock specimens with closed and open flaws on the surface

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 5,   Pages 1222-1237 doi: 10.1007/s11709-021-0773-1

Abstract: The influence of closed and open surface flaws on the stress distribution and failure in rock specimens is investigated. Heterogeneous finite element models are developed to simulate the compression tests on flawed rock specimens. The simulated specimens include those with closed flaws and those with open flaws on the surface. Systematic analyses are conducted to investigate the influences of the flaw inclination, friction coefficient and the confining stress on failure behavior. Numerical results show significant differences in the stress, displacement, and failure behavior of the closed and open flaws when they are subjected to pure compression; however, their behaviors under shear and tensile loads are similar. According to the results, when compression is the dominant mode of stress applied to the flaw surface, an open flaw may play a destressing role in the rock and relocate the stress concentration and failure zones. The presented results in this article suggest that failure at the rock surface may be managed in a favorable manner by fabricating open flaws on the rock surface. The insights gained from this research can be helpful in managing failure at the boundaries of rock structures.

Keywords： surface flaw     heterogeneity     circular hole     numerical modeling     relative displacement    

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Three-dimensional face point cloud hole-filling algorithm based on binocular stereo matching and a B-spline Research Articles

Yuan HUANG, Feipeng DA,whhbb@163.com

Frontiers of Information Technology & Electronic Engineering 2022, Volume 23, Issue 3,   Pages 398-408 doi: 10.1631/FITEE.2000508

Abstract: In this study, we propose a hole-filling method based on stereo-matching technology combined with a .the curve can then be roughly described by a few key points, and the control points are put into the holeThis approach also effectively supplements the hole information, and the patched point cloud is closer

Keywords： Three-dimensional (3D) point cloud     Hole filling     Stereo matching     B-spline    

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Research and establishment of enterprise quality metadata standard

SONG Han, LI Jie, ZHANG Genbao

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 1,   Pages 106-110 doi: 10.1007/s11465-008-0019-0

Abstract: Enabling quality managers to utilize and manage quality data efficiently under modern quality managementcircumstances is a primary issue for improving enterprise quality management.A concept of quality metadata is proposed in this paper, which can help quality managers gain a deeperunderstanding of various features of quality data and establish a more stable foundation for furtherThe procedure of establishing quality metadata standards is emphasized in the paper, and the content

Keywords： enterprise quality     foundation     description     quality management     primary    

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Foxtail millet: nutritional and eating quality, and prospects for genetic improvement

Lu HE,Bin ZHANG,Xingchun WANG,Hongying LI,Yuanhuai HAN

Frontiers of Agricultural Science and Engineering 2015, Volume 2, Issue 2,   Pages 124-133 doi: 10.15302/J-FASE-2015054

Abstract: more important than ever to develop breeding strategies that facilitate the increasing demand for high qualityHere we review research on foxtail millet quality evaluation, appearance, cooking and eating qualityimportant crop, outline current status of breeding of foxtail millet, and make suggestions to improve grain quality

Keywords： foxtail millet     grain quality     quality evaluation     breeding for quality    

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Title Author Date Type Operation

Hole quality in longitudinal–torsional coupled ultrasonic vibration assisted drilling of carbon fiber

Guofeng MA, Renke KANG, Zhigang DONG, Sen YIN, Yan BAO, Dongming GUO

Journal Article

Improving hole transfer of boron nitride quantum dots modified PDI for efficient photodegradation

Journal Article

Fracture behavior of two non-symmetrical collinear cracks emanating from an elliptical hole in a piezoelectric

Junhong GUO, Zixing LU

Journal Article

The influence of hand hole on the ultimate strength and crack pattern of shield tunnel segment joints

Shaochun WANG, Xi JIANG, Yun BAI

Journal Article

characteristic evaluation and interpolation reconstruction for surface topography of drilled composite hole

Journal Article

Effects of Structure of Opening Hole in Gas Distributor on Detained Mass of Material for Fluidized Drying

Liu Wei,Tang Wencheng

Journal Article

Blasting Technologies of Decreasing Vibration in Subway Tunnel Underpass Adjacent Upper Buildings

Fang Junbo

Journal Article

Effects of Structure of Opening Hole in Gas Distributor on Drying Property for Fluidized Bed Drier

Liu Wei,Tang Wencheng

Journal Article

Probabilistic analysis of secant piles with random geometric imperfections

Journal Article

The Vibration Testing Analysis of Chamber & Deep-hole Pre-splitting Blasting

Shen Zhenyu,Wang Xuguang,Yu Yalun,Liu Honggang

Journal Article

From total quality management to Quality 4.0: A systematic literature review and future research agenda

Journal Article

Analysis of stress and failure in rock specimens with closed and open flaws on the surface

Journal Article

Three-dimensional face point cloud hole-filling algorithm based on binocular stereo matching and a B-spline

Yuan HUANG, Feipeng DA,whhbb@163.com

Journal Article

Research and establishment of enterprise quality metadata standard

SONG Han, LI Jie, ZHANG Genbao

Journal Article

Foxtail millet: nutritional and eating quality, and prospects for genetic improvement

Lu HE,Bin ZHANG,Xingchun WANG,Hongying LI,Yuanhuai HAN

Journal Article