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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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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 holeThe advanced longitudinal–torsional coupled ultrasonic vibration assisted drilling (LTC-UAD) method hasFurthermore, LTC-UAD can decrease the delamination and burr factors and improve the surface quality of the hole

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

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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-hole

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

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A review of nondestructive examination technology for polyethylene pipe in nuclear power plant

Jinyang ZHENG, Yue ZHANG, Dongsheng HOU, Yinkang QIN, Weican GUO, Chuck ZHANG, Jianfeng SHI

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 4,   Pages 535-545 doi: 10.1007/s11465-018-0515-9

Abstract: For the former category, phased array ultrasonic technique is proven effective for inspecting typicalpattern recognition, and a safety assessment principle is summa-rized from the database of destructive testingOn the other hand, recent research and practical studies reveal that in current ultrasonic-inspectiontechnology, the absence of effective ultrasonic inspection for large size was lack of considerationFurthermore, main technical problems were analyzed in the paper to achieve an effective ultrasonic test

Keywords： polyethylene pipe     nuclear power plant     ultrasonic inspection     nondestructive testing     safety assessment    

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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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Progress in terahertz nondestructive testing: A review

Shuncong ZHONG

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 3,   Pages 273-281 doi: 10.1007/s11465-018-0495-9

Abstract: Recently, THz nondestructive testing (NDT) technology has become an interesting topic.

Keywords： terahertz pulsed imaging (TPI)     nondestructive testing (NDT)     composite material     thermal barrier coating    

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Testing of tuberculosis infection among Chinese adolescents born after terminating the Bacillus Calmette--Guérin booster vaccination: subgroup analysis of a population-based cross-sectional study

Hengjing Li, Henan Xin, Shukun Qian, Xiangwei Li, Haoran Zhang, Mufei Li, Boxuan Feng, Qi Jin, Lei Gao

Frontiers of Medicine 2017, Volume 11, Issue 4,   Pages 528-535 doi: 10.1007/s11684-017-0573-0

Abstract: Calmette–Guérin (BCG) booster vaccination in China was estimated using tuberculin skin testingvaccination still affects TST performance, and a two-step approach might be considered for TB infection testing

Keywords： tuberculin skin test     interferon-γ release assays     adolescent     agreement    

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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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density measurement for plastic injection molding via ultrasonic technology

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 4, doi: 10.1007/s11465-022-0714-2

Abstract: This study is the first to propose an in-situ density measurement method using ultrasonic technologyThe ultrasonic velocity is obtained from the time-domain signals, and the acoustic impedance is computed

Keywords： ultrasonic measurement     melt density     in-situ measurement     injection molding    

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Linear ultrasonic motor using quadrate plate transducer

Jiamei JIN, Chunsheng ZHAO

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 1,   Pages 88-91 doi: 10.1007/s11465-009-0016-y

Abstract: A linear ultrasonic motor using a quadrate plate transducer was developed for precision positioning.

Keywords： ultrasonic motor     quadrate plate     coincident frequency     alternant contact    

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Postprocessor development for ultrasonic cutting of honeycomb core curved surface with a straight blade

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 1, doi: 10.1007/s11465-022-0729-8

Abstract: minimization algorithm and spindle rotation algorithm were integrated and compiled, and the straight blade ultrasonicthe numerical control program generated by the postprocessor was verified by machining and accuracy testingTherefore, the postprocessor developed in this paper can be well adapted to the honeycomb core ultrasonic

Keywords： honeycomb core     straight blade     ultrasonic cutting     tool pose     postprocessor    

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Vibration characteristics and machining performance of a novel perforated ultrasonic vibration platform

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 1, doi: 10.1007/s11465-022-0730-2

Abstract: Ultrasonic vibration-assisted grinding (UVAG) is an advanced hybrid process for the precision machiningIn this work, a novel perforated ultrasonic vibration platform resonator was developed for UVAG.element method, and the vibration tests show a high degree of consistency for developing the perforated ultrasonicThe employment of ultrasonic vibration reduces the grinding force by 36% at most, thereby decreasing

Keywords： ultrasonic vibration-assisted grinding     perforated ultrasonic vibration platform     vibration characteristics    

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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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Sonic General Non-destructive Testing Technique

Chen Jimao

Strategic Study of CAE 2000, Volume 2, Issue 4,   Pages 64-69

Abstract:

This paper describes new general multi-mode non-destructive testing (NDT) of composite materials andThis technique which is based on sonic and ultrasonic testing performs five different modes of testing

Keywords： sonic general testing     general non-destructive testing (NDT)     non-destructive testing of composite materials     mechanical impedance analysis (MIA)     vibration analysis (VA)     resonance testing    

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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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Title Author Date Type Operation

Probabilistic analysis of secant piles with random geometric imperfections

Journal Article

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

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

Shen Zhenyu,Wang Xuguang,Yu Yalun,Liu Honggang

Journal Article

A review of nondestructive examination technology for polyethylene pipe in nuclear power plant

Jinyang ZHENG, Yue ZHANG, Dongsheng HOU, Yinkang QIN, Weican GUO, Chuck ZHANG, Jianfeng SHI

Journal Article

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

Journal Article

Progress in terahertz nondestructive testing: A review

Shuncong ZHONG

Journal Article

Testing of tuberculosis infection among Chinese adolescents born after terminating the Bacillus Calmette--Guérin booster vaccination: subgroup analysis of a population-based cross-sectional study

Hengjing Li, Henan Xin, Shukun Qian, Xiangwei Li, Haoran Zhang, Mufei Li, Boxuan Feng, Qi Jin, Lei Gao

Journal Article

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

Junhong GUO, Zixing LU

Journal Article

density measurement for plastic injection molding via ultrasonic technology

Journal Article

Linear ultrasonic motor using quadrate plate transducer

Jiamei JIN, Chunsheng ZHAO

Journal Article

Postprocessor development for ultrasonic cutting of honeycomb core curved surface with a straight blade

Journal Article

Vibration characteristics and machining performance of a novel perforated ultrasonic vibration platform

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

Sonic General Non-destructive Testing Technique

Chen Jimao

Journal Article

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

Journal Article