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爆炸冲击成型混凝土试验

科技导报 2012年第24期30卷 38-41页

作者：崔卓王海亮山东科技大学矿山灾害预防控制省部共建教育部重点实验室山东青岛266590 青岛东方盛安全技术有限公司山东青岛266012

研究流态混凝土在爆炸冲击这一极端状态下养护成型后的强度性能和微观结构特征。制备了不同炸药量在半无限土体中爆炸冲击流态混凝土试块。利用岛津AG-X250电子万能岩石压力机对不同药量爆炸冲击成型的混凝土试件、同等条件养护试件和... 详细信息

研究流态混凝土在爆炸冲击这一极端状态下养护成型后的强度性能和微观结构特征。制备了不同炸药量在半无限土体中爆炸冲击流态混凝土试块。利用岛津AG-X250电子万能岩石压力机对不同药量爆炸冲击成型的混凝土试件、同等条件养护试件和标准养护条件试件进行了单轴压缩试验。采用JSM-6510LV高低真空扫描电子显微镜成功得到了不同条件下制备的混凝土试件的微观成分结构及图像。结果表明,经炸药爆炸冲击成型的混凝土强度较同等条件养护成型混凝土强度有较大提高,且可以高于标准养护成型混凝土的强度。定性对比分析证实,爆炸冲击成型混凝土的微观结构与其强度的发展规律一致。

关键词：爆炸冲击混凝土抗压强度微观结构

Analysis of Mine Ventilation Network Using Genetic Algorithm

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Journal of Beijing Institute of Technology 1999年第2期8卷 33-38页

作者：谢贤平冯长根王海亮北京理工大学爆炸灾害预防与控制国家重点实验室

Aim To determine the global optimal solution for a mine ventilation network under given network topology and airway characteristics. Methods\ The genetic algorithm was used to find the global optimal solution of the network. Results\ A modified genetic algorithm is presented with its characteristics and principle. Instead of working on the conventional bit by bit operation, both the crossover and mutation operators are handled in real values by the proposed algorithms. To prevent the system from turning into a premature problem, the elitists from two groups of possible solutions are selected to reproduce the new populations. Conclusion\ The simulation results show that the method outperforms the conventional nonlinear programming approach whether from the viewpoint of the number of iterations required to find the optimum solutions or from the final solutions obtained.

关键词： mine ventilation network nonlinear programming optimization genetic algorithms

热致相分离法聚偏氟乙烯多孔膜制备及微结构调控

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高分子材料科学与工程 2018年第3期34卷 161-167页

作者：刘海亮王世乾肖长发刘振天津工业大学省部共建分离膜与膜过程国家重点实验室/分离膜科学与技术国家级国际合作研究中心材料科学与工程学院天津300387

以邻苯二甲酸二辛酯(DBP)和己二酸二辛酯(DOA)组成混合稀释剂,采用热致相分离法(TIPS)制备了聚偏氟乙烯(PVDF)平板膜。通过冷场发射扫描电子显微镜观察所得膜形貌,采用差示扫描量热仪测试膜热力学性能,并对其渗透性能及力学性能进行测... 详细信息

以邻苯二甲酸二辛酯(DBP)和己二酸二辛酯(DOA)组成混合稀释剂,采用热致相分离法(TIPS)制备了聚偏氟乙烯(PVDF)平板膜。通过冷场发射扫描电子显微镜观察所得膜形貌,采用差示扫描量热仪测试膜热力学性能,并对其渗透性能及力学性能进行测试表征。研究了稀释剂配比与聚合物浓度对PVDF平板膜结构和性能的影响。结果表明,PVDF/DBP/DOA体系成膜过程以S-L分相为主,呈典型的球晶结构。随PVDF浓度和混合稀释剂中DOA比例增加,膜横截面球晶结构尺寸及球晶结构晶粒间空隙均变小,同时膜表面孔隙率减小,致密度增加。此外,混合稀释剂中DOA比例增加,能够改善膜的力学性能,但会减小膜的纯水通量。

关键词：聚偏氟乙烯热致相分离法混合稀释剂平板膜

Fast detection of the early decay in oranges using visible-LED structuredillumination imaging combined with spiral phase transform and feature-based classification model

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International Journal of Agricultural and Biological Engineering 2024年第3期17卷 185-192,F0003页

作者： Zhonglei Cai Chanjun Sun Yizhi Zhang Ruiyao Shi Junyi Zhang hailiang Zhang Jiangbo Li College of Mechanical and Electrical Engineering Shihezi UniversityShihezi 832003XinjiangChina Jiangsu Province and Education Ministry Co-sponsored Synergistic Innovation Center of Modern Agricultural Equipment Jiangsu UniversityZhenjiang 212013JiangsuChina Intelligent Equipment Research Center Beijing Academy of Agriculture and Forestry SciencesBeijing100097China College of Electrical and Automation Engineering East China Jiaotong UniversityNanchang 330013China National Engineering Research Center for Information Technology in Agriculture Beijing 100089China

The early decay of citrus can cause economic and serious food safety *** early decayed area has no obvious visual characteristics,making effective detection of this damage very difficult for the citrus *** study constructed a new detection system based on visible-light emitting diode(LED)structured-illumination imaging and proposed an effective methodology combined with a spiral phase transform(SPT)algorithm for the early detection of decayed *** sample obtained three phase-shifting pattern images with phase shifts of−2π/3,0,and 2π/3 at a spatial frequency of 0.25 cycles/*** strategies(i.e.,the conventional three-phase-shifting method,2-phase SPT,and 1-phase SPT)were used to demodulate the original patterned images to recover the direct component(DC)and amplitude component(AC)*** partial least squares discriminant analysis(PLS-DA)and least squares support vector machine(LS-SVM)classification models were established based on the texture features of DC,AC,and RT(*** ratio of AC to DC)***,the random frog(RF)algorithm was used to simplify the optimal full-featured ***,the LS-SVM model constructed using 7 texture features from the RT image obtained an average classification accuracy of 95.1%for all tested *** study indicates that the proposed structured-illumination imaging technique combined with 2-phase SPT and feature-based classification model can achieve the fast identification of early decayed oranges.

关键词： oranges early decay detection structured-illumination imaging spiral phase transform classification model

Data processing method for aerial testing of rotating accelerometer gravity gradiometer

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中国惯性技术学报 2024年第8期32卷 743-752页

作者： QIAN Xuewu TANG hailiang Department of Electronic Engineering Jinan Vocational CollegeJinan 250103China Jinan Key Laboratory of 5G+Advanced Control Technology Jinan 250103China School of Information Science and Engineering Qilu Normal UniversityJinan 250200China

A novel method for noise removal from the rotating accelerometer gravity gradiometer(MAGG)is *** introduces a head-to-tail data expansion technique based on the zero-phase filtering principle.A scheme for determining band-pass filter parameters based on signal-to-noise ratio gain,smoothness index,and cross-correlation coefficient is designed using the Chebyshev optimal consistent approximation ***,a wavelet denoising evaluation function is constructed,with the dmey wavelet basis function identified as most effective for processing gravity gradient *** results of hard-in-the-loop simulation and prototype experiments show that the proposed processing method has shown a 14%improvement in the measurement variance of gravity gradient signals,and the measurement accuracy has reached within 4E,compared to other commonly used methods,which verifies that the proposed method effectively removes noise from the gradient signals,improved gravity gradiometry accuracy,and has certain technical insights for high-precision airborne gravity gradiometry.

关键词： airborne gravity gradiometer data processing band-passing filter evaluation function

SYNTHESIS AND CHARACTERIZATION OF AMPHIPHILIC TRIBLOCK COPOLYMER PEO-b-PMMA-b-PS

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SYNTHESIS AND CHARACTERIZATION OF AMPHIPHILIC TRIBLOCK COPOL...

Third East Asian Polymer Conference

作者： Xiaovi Sun, Qiqun He, hailiang Zhang, Xiayu wang Institute of Polymer Science, Xiangtan University, Xiangtan 411105

Living polymerization procedures in the ideal case exert immediate initiation followed by propagation without termination and transfer reaction. Therefore these procedures are qualified synthetic tools for obtaining polymers with well defined architecture, especially block copolymers. Amphiphilic block copolymers have attracted special attention in fundamental and applied research for their unique chain architecture and physical properties. Poly(ethylene oxide) (PEO) which has superior properties for being nontoxic, flexible, hydrophilic and biocompatible, is widely used in research and application. Amphiphilic block copolymers consisting of PEO as the hydrophilic and crystallizable segments are particularly popular. The synthesis of ternary ABC triblock copolymers by living polymerizaion has been one of the most interesting field to study their rich morphological

关键词： Triblock copolymer atom transfer radical polymerization.

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大直径中空孔直眼掏槽微振动爆破参数研究

隧道建设 2015年第2期35卷 174-179页

作者：张祖远王海亮山东科技大学矿山灾害预防控制省部共建国家重点实验室培育基地山东青岛266590

为最大限度减小掏槽区的爆破振动对地表建筑物的扰动,以青岛地铁3号线太延区间下穿伊美尔整形医院段为背景,通过理论分析和现场试验,对大直径中空孔直眼掏槽的中空孔孔径、掏槽装药炮孔数目、首响孔与中空孔距离、逐孔起爆时差和中空孔... 详细信息

为最大限度减小掏槽区的爆破振动对地表建筑物的扰动,以青岛地铁3号线太延区间下穿伊美尔整形医院段为背景,通过理论分析和现场试验,对大直径中空孔直眼掏槽的中空孔孔径、掏槽装药炮孔数目、首响孔与中空孔距离、逐孔起爆时差和中空孔布设位置各爆破参数进行探讨。结果表明：在断面中下部位布置直径为120~150 mm的中空孔,环形布置4个掏槽眼,首响孔距中空孔200~350 mm,逐孔起爆时差宜在40 ms以上,可使掏槽爆破振速得到有效控制。

关键词：青岛地铁直眼掏槽中空孔爆破参数振动

BFRP管膨胀混凝土短柱轴压力学性能试验研究

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建筑结构 2016年第15期46卷 32-36页

作者：王海良郭富王博天津城建大学土木工程学院天津300384 天津市土木建筑结构防护与加固重点实验室天津300384

通过30根玄武岩纤维(BFRP)管膨胀混凝土短柱轴压试验,研究了BFRP布层数、膨胀剂掺量对BFRP管膨胀混凝土短柱轴压力学性能的影响。结果表明:试件脆性破坏特征明显;掺入适量膨胀剂可提高BFRP管混凝土短柱轴压极限承载能力,试件轴压极限承... 详细信息

通过30根玄武岩纤维(BFRP)管膨胀混凝土短柱轴压试验,研究了BFRP布层数、膨胀剂掺量对BFRP管膨胀混凝土短柱轴压力学性能的影响。结果表明:试件脆性破坏特征明显;掺入适量膨胀剂可提高BFRP管混凝土短柱轴压极限承载能力,试件轴压极限承载能力提高幅度随膨胀剂掺量增加呈先提高后降低趋势;对于本试验C40,C50两个系列试件其最大轴压极限承载力对应膨胀剂掺量分别为10%和15%;膨胀剂掺量相同时,随BFRP布层数增加,试件轴压极限承载力有明显提高趋势;试件轴向、环向应力-应变曲线均表现为双折线形。

关键词： BFRP管膨胀混凝土轴压极限承载力

Achieving High Strength and Tensile Ductility in Pure Nickel by Cryorolling with Subsequent Low-Temperature Short-Time Annealing

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Engineering 2024年第2期33卷 190-203页

作者： Zhide Li Hao Gu Kaiguang Luo Charlie Kong hailiang Yu Light Alloys Research Institute Central South UniversityChangsha 410083China State Key Laboratory of High Performance Complex Manufacturing Central South UniversityChangsha 410083China College of Mechanical and Electrical Engineering Central South UniversityChangsha 410083China Electron Microscope Unit University of New South WalesSydneyNSW 2052Australia

Ultra fine-grained pure metals and their alloys have high strength and low *** this study,cryorolling under different strains followed by low-temperature short-time annealing was used to fabricate pure nickel sheets combining high strength with good *** results show that,for different cryorolling strains,the uniform elongation was greatly increased without sacrificing the strength after annealing.A yield strength of 607 MPa and a uniform elongation of 11.7%were obtained after annealing at a small cryorolling strain(ε=0.22),while annealing at a large cryorolling strain(ε=1.6)resulted in a yield strength of 990 MPa and a uniform elongation of 6.4%.X-ray diffraction(XRD),transmission electron microscopy(TEM),scanning electron microscopy(SEM),and electron backscattered diffraction(EBSD)were used to characterize the microstructure of the specimens and showed that the high strength could be attributed to strain hardening during cryorolling,with an additional contribution from grain refinement and the formation of dislocation *** high ductility could be attributed to annealing twins and micro-shear bands during stretching,which improved the strain hardening *** results show that the synergistic effect of strength and ductility can be regulated through low-temperature short-time annealing with different cryorolling strains,which provides a new reference for the design of future thermo-mechanical processes.

关键词： Cryorolling Annealing Nickel Strain hardening Ductility