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Theoretical and experimental research on nonlinear spring models of a bonding interface

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Chinese Journal of Acoustics 2012年第2期31卷 113-121页

作者： AN Zhiwu wang xiaomin mao jie li mingxuan DENG Mingxi State Key Laboratory of Acoustics Institute of Acoustics Chinese Academy of Sciences Beijing 100190 Logistics Engineering University Chongqing 401331

The nonlinear boundary conditions on a bonding interface between two solids of a longitudinal or shear horizontal （SH） wave under normal incidence were explored. By applying the second-order perturbation method, the nonlinear spring models are rigorously developed in the limit of small thickness to wavelength ratio. Numerical results agree well with the exact solutions obtained by continuous boundary conditions. The nonlinear spring model for longitudinal wave is verified by measuring the nonlinearity of a wedge-shaped bonding structure of steel or aluminum substrates. The experimental results reveal that the above model is rather accurate and as the impedance ratio of adherend to adhesive increases, the model becomes more accurate.

关键词：非线性边界条件弹簧模型粘接界面实验非线性弹簧数值模拟模型验证粘接结构

Sound field of an electromagnetic acoustic transducer

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Chinese Journal of Acoustics 2011年第1期30卷 44-54页

作者： CHEN Qiuying wang xiaomin li mingxuan mao jie State Key Laboratory of Acoustics Institute of Acoustics Chinese Academy of Sciences Beijing 100190

The characteristic of radiated sound field excitated within a non-ferromagnetic aluminum by an electromagnetic acoustic transducer consisting of circle-spiral coil and vertical bias magnetic field is studied. This article presents an improved force source model according to the principle of electromagnetic induction. Then the analytic displacement solution of sound field produced by that force source model is deduced. The tangential and normal directivities of shear and longitudinal sounds are calculated numerically and compared with experimental results. Experimental results conform well to the theoretical prediction, which not only shows that the electromagnetic acoustic transducer of this conformation has a good directivity of vertical shear-wave radiation, but also confirms the given force source model is effective to describe the actual physical behavior of the probe. Theoretical and experimental study lays a foundation for optimization design and engineering application of the electromagnetic acoustic probe.

关键词： Sound field of an electromagnetic acoustic transducer EMAT

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固体板背覆薄层特性的低频超声反演方法研究

声学学报 2009年第1期34卷 11-19页

作者：王杨毛捷李明轩王小民中国科学院声学研究所声场声信息国家重点实验室北京100190

研究了应用低频超声的反射频谱对固体板厚度及背覆薄层的各特征参数(包括厚度、声速、密度、衰减、声阻抗率、声时)进行反演的方法。从灵敏度函数、目标函数及误差传递方程的角度,对应用反射频谱的谐振频率或幅度谱反演模型系统的单参... 详细信息

研究了应用低频超声的反射频谱对固体板厚度及背覆薄层的各特征参数(包括厚度、声速、密度、衰减、声阻抗率、声时)进行反演的方法。从灵敏度函数、目标函数及误差传递方程的角度,对应用反射频谱的谐振频率或幅度谱反演模型系统的单参数和双参数的方法进行了分析讨论。实验使用中心频率为7MHz的探头检测铝板/聚合物薄层样品,在同样的条件下,谐振频率法和幅度谱法反演的单参数反演效果相当,谐振频率方法的双参数反演效果优于幅度谱方法,前者薄层声阻抗率和声时同时反演的平均误差为3.4%和4.7%,而后者没有得到结果。

关键词：反演方法固体板薄层超声低频双参数反演特性谐振频率

The design of electromagnetic acoustic experimental platform and the study on radiated sound field by its probe

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Chinese Journal of Acoustics 2010年第1期29卷 73-84页

作者： CHEN Qiuying LENG Tao wang xiaomin li mingxuan mao jie State key Laboratory of Acoustics Institute of Acoustics Chinese Academy of Sciences Beijing 100190

Electromagnetic acoustic testing technology has aroused extensive concern in the field of ultrasonic nondestructive testing due to its advantages of non-contact with the test specimen, couplant free and good signal reproducibility. This article summarizes the related re- search work of our group in recent years and mainly introduces the two parts on electromagnetic acoustic experimental platform and radiated sound field by its probe in detail.

关键词： The design of electromagnetic acoustic experimental platform and the study on radiated sound field by its probe

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可产生“任意”超声检测信号的方法

声学学报 2009年第6期34卷 539-547页

作者：张晗李明轩毛捷王小民中国科学院声学研究所声场声信息国家重点实验室北京100190

提出了一种实现超声检测中期望检测信号的方法。该方法采用自适应滤波解卷积计算获得期望检测信号所需的激励信号,通过将该激励信号施加在检测系统上获得期望的检测信号,达到检测信号的可控可调。实验获得了时宽带宽积达33的线性调频检... 详细信息

提出了一种实现超声检测中期望检测信号的方法。该方法采用自适应滤波解卷积计算获得期望检测信号所需的激励信号,通过将该激励信号施加在检测系统上获得期望的检测信号,达到检测信号的可控可调。实验获得了时宽带宽积达33的线性调频检测信号和信噪比达18.1 dB的单周期检测信号,达到期望要求。仿真分析表明,所实现的检测信号信噪比将随检测系统带宽的增加而增加。该方法可用于产生与检测目标相匹配的检测信号,提高超声检测性能。

关键词：超声检测信号激励信号检测系统自适应滤波卷积计算线性调频仿真分析检测性能

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电磁声换能器的辐射声场研究

声学学报 2009年第4期34卷 318-324页

作者：陈秋颖王小民李明轩毛捷中国科学院声学研究所声场声信息国家重点实验室北京100190

分析了一种圆环形螺线圈、垂直偏置磁场结构的电磁声探头在非铁磁性介质铝中的辐射声场特性。首先根据电磁感应原理对探头进行了物理和数学建模,将表面力源近似成水平和竖直分布的两种,且水平分量远大于竖直分量,推导出该种力源产生的... 详细信息

分析了一种圆环形螺线圈、垂直偏置磁场结构的电磁声探头在非铁磁性介质铝中的辐射声场特性。首先根据电磁感应原理对探头进行了物理和数学建模,将表面力源近似成水平和竖直分布的两种,且水平分量远大于竖直分量,推导出该种力源产生的声场的理论解析解。分别数值计算出了横波和纵波的切向和法向指向性,并和实验结果进行对比。实验结果和理论计算符合较好,为此种结构的电磁声换能器的实际工程应用提供了理论依据。

关键词：电磁声换能器辐射声场电磁感应原理水平分量磁场结构声场特性磁性介质数学建模

First experimental constraints on WIMP couplings in the effective field theory framework from CDEX

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Science China(Physics,Mechanics & Astronomy) 2021年第8期64卷 15-22页

作者： Yi wang Zhi Zeng Qian Yue liTao yang KeJun Kang YuanJing li Mehment Agartioglu HaiPeng An JianPing Chang JingHan Chen YunHua Chen JianPing Cheng Cheng Yi Chiang WenHan Dai Zhi Deng ChangHao Fang XinPing Geng Hui Gong QiuJu Guo XuYuan Guo HongJian He li He ShengMing He JinWei Hu TuChen Huang HanXiong Huang HaiTao Jia liPing Jia Xi Jiang HauBin li JianMin li Jin li mingxuan li RenMingjie li Xia li YuLan li Bin liao FongKay lin ShinTed lin ShuKui liu YanDong liu Yu liu YuanYuan liu ZhongZhi liu Hao Ma YuCai mao QiYuan Nie JinHua Ning Hui Pan NingChun Qi jie Ren XiChao Ruan ChangSong Shang Vivek Sharma Ze She Lakhwinder Singh Monoj Kumar Singh TianXi Sun ChangJian Tang WeiYou Tang yang Tian GuangFu wang li wang Qing wang Yu Chen wang YunXiang wang Zhen wang Henry Tsz-King Wong ShiYong Wu YuCheng Wu Haoyang Xing Yin Xu Tao Xue YuLu Yan Nan Yi ChunXu Yu HaiJun Yu JianFeng Yue Ming Zeng BingTao Zhang Lei Zhang FengShou Zhang ZhenYu Zhang KangKang Zhao MingGang Zhao JiFang Zhou ZuYing Zhou JingJun Zhu Key Laboratory of Particle and Radiation Imaging(Ministry of Education) Department of Engineering PhysicsTsinghua UniversityBeijing 100084China Department of Physics Tsinghua UniversityBeijing 100084China Institute of Physics Academia SinicaTaipei 11529China NUCTECH Company Beijing 100084China YaLong River Hydropower Development Company Chengdu 610051China College of Nuclear Science and Technology Beijing Normal UniversityBeijing 100875China College of Physics Sichuan UniversityChengdu 610065China School of Physics Peking UniversityBeijing 100871China Sino-French Institute of Nuclear and Technology Sun Yet-sen UniversityZhuhai 519082China Department of Nuclear Physics China Institute of Atomic EnergyBeijing 102413China Department of Physics Banaras Hindu UniversityVaranasi 221005India Department of Physics Beijing Normal UniversityBeijing 100875China School of Physics Nankai UniversityTianjin 300071China

We present weakly interacting massive particles(WIMPs) search results performed using two approaches of effective field theory from the China Dark Matter Experiment(CDEX), based on the data from both CDEX-1B and CDEX-10 stages. In the nonrelativistic effective field theory approach, both time-integrated and annual modulation analyses were used to set new limits for the coupling of WIMP-nucleon effective operators at 90% confidence level(C.L.) and improve over the current bounds in the low mχregion. In the chiral effective field theory approach, data from CDEX-10 were used to set an upper limit on WIMP-pion coupling at 90% C.L. We for the first time extended the limit to the m_(χ)<6 GeV/c^(2) region.

关键词： WIMP EFT CDEX dark matter annual modulation

Concurrent chemoradiotherapyof different radiation doses and different irradiation fields for locally advanced thoracic esophageal squamous cell carcinoma:A randomized,multicenter,phase Ⅲ clinical trial

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Cancer Communications 2024年第10期44卷 1173-1188页

作者： Jian Zhang Minghao li Kaixian Zhang Anping Zheng Guang li Wei Huang Shaoshui Chen Xiangming Chen xiaomin li Yanxing Sheng Xinchen Sun liping liu Xiaowei liu jie li Jun wang Hong Ge Shucheng Ye Qingsong Pang Xianwen Zhang Shengbin Dai Richard Yu Wendong Gu Mingming Dai Gaowa Siqin Yunwei Han Xiaolin Ge Xin Yuan Yongjing yang Haiwen Zhu Juan Pu lihua Dong Xiangdong Sun Jundong Zhou Weidong mao Fei Gao Haiqun lin Heyi Gong Tao Zhou Zhenjiang li Hongsheng li Zhongtang wang Baosheng li Department of Oncology Central Hospital Affiliated to Shandong First Medical UniversityJinanShandongP.R.China Department of Radiation Oncology Shandong Cancer Hospital and InstituteShandong First Medical University and Shandong Academy of Medical SciencesJinanShandongP.R.China Department of Oncology Tengzhou Central People’s HospitalTengzhouShandongP.R.China Department of Radiation Oncology Anyang Tumor HospitalAnyangHenanP.R.China Department of Radiation Oncology the First Hospital of China Medical UniversityShenyangLiaoningP.R.China Department of Oncology Binzhou Medical University HospitalBinzhouShandongP.R.China Department of Oncology Taian CentralHospitalTaianShandongP.R.China Department of Radiation Oncology Shanxi Province Cancer HospitalTaiyuanShanxiP.R.China Department of Oncology Liaocheng People’s HospitalLiaochengShandongP.R.China Department of Radiation Oncology the First Affiliated Hospital of Nanjing Medical UniversityNanjingJiangsuP.R.China Department of Oncology Jining First People′s HospitalJiningShandongP.R.China Department of Oncology the Affiliated Hospital of Jining Medical UniversityJiningShandongP.R.China Department of Radiation Oncology the Fourth Hospital of Hebei Medical UniversityHebei Clinical Research Center for Radiation OncologyShijiazhuangHebeiP.R.China Department of Radiation Oncology the Affiliated Cancer Hospital of Zhengzhou UniversityZhengzhouHenanP.R.China Department of Radiation Oncology Tianjin Medical University Cancer Institute and HospitalNational Clinical Research Center for CancerKey Laboratory ofCancer Prevention and TherapyTianjin’s ClinicalResearch Center for CancerTianjinP.R.China Department of Oncology Subei People’s Hospital of Jiangsu ProvinceYangzhouJiangsuP.R.China Department of Oncology Taizhou People’s Hospital of Jiangsu ProvinceTaizhouZhejiangP.R.China Department of Radiation Oncology the Affiliated Hospital of Inner Mongolia Medical UniversityHohhotInner MongoliaP.R.China Department of Radiation O

Background:Concurrent chemoradiotherapy(CCRT)is the standard treatment for locally advanced esophageal squamous cell carcinoma(ESCC).However,the optimal radiotherapy regimen,particularly in terms of total dose and planned range of irradiation field,remains *** phase III clinical trial aimed to compare the survival benefits between different radiation doses and different target ***:This trial compared two aspects of radiation treatment,total dose and field,using a two-by-two factorial *** high-dose(HD)group received 59.4 Gy radiation,and the standard-dose(SD)group received 50.4 *** involved field irradiation(IFI)group and elective nodal irradiation(ENI)group adopted different irradiation *** participants were assigned to one of the four groups(HD+ENI,HD+IFI,SD+ENI and SD+IFI).The primary endpoint was overall survival(OS),and the secondary endpoints included progressionfree survival(PFS).The synergy indexwas used to measure the interaction effect between dose and ***:The interaction analysis did not reveal significant synergistic effects between the dose and irradiation *** comparison to the target field,patients in IFI or ENI showed similar OS(hazard ratio[HR]=0.99,95%CI:0.80-1.23,p=0.930)and PFS(HR=1.02,95%CI:0.82–1.25).TheHDtreatment did not show significantly prolonged OS compared with SD(HR=0.90,95%CI:0.72–1.11,p=0.318),but it suggested improved PFS(25.2 months to 18.0 months).Among the four groups,the HD+IFI group presented the best survival,while the SD+IFI group had the worst *** significant difference in the occurrence of severe adverse events was found in dose or field ***:IFI demonstrated similar treatment efficacy to ENI in CCRT of *** HD demonstrated improved PFS,but did not significantly improve *** dose escalation based on IFI(HD+IFI)showed better therapeutic efficacy than the current recommendation(SD+ENI)and is worth further validation.

关键词： clinical trial concurrent chemoradiotherapy elective nodal radiation esophageal squamous cell carcinoma high dose radiation involved field radiation overall survival standard dose radiation

CEPC Technical Design Report

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Radiation Detection Technology and Methods 2024年第1期8卷 I0003-I0016,1-1091页

作者： Waleed Abdallah Tiago Carlos Adorno de Freitas Konstantin Afanaciev Shakeel Ahmad Ijaz Ahmed Xiaocong Ai Abid Aleem Wolfgang Altmannshofer Fabio Alves Weiming An Rui An Daniele Paolo Anderle Stefan Antusch Yasuo Arai Andrej Arbuzov Abdesslam Arhrib Mustafa Ashry Sha Bai Yu Bai yang Bai Vipul Bairathi Csaba Balazs Philip Bambade Yong Ban Tripamo Bandyopadhyay Shou-Shan Bao Desmond P.Barber Ayse Bat Varvara Batozskaya Subash Chandra Behera Alexander Belyaev Michele Bertucci Xiao-Jun Bi Yuanjie Bi Tianjian Bian Fabrizio Bianchi Thomas Biekotter Michela Biglietti Shalva Bilanishvili Deng Binglin Denis Bodrov Anton Bogomyagkov Serge Bondarenko Stewart Boogert Maarten Boonekamp Marcello Borri Angelo Bosotti Vincent Boudry Mohammed Boukidi Igor Boyko Ivanka Bozovic Giuseppe Bozzi Jean-Claude Brient Anastasiia Budzinskaya Masroor Bukhari Vladimir Bytev Giacomo Cacciapaglia Hua Cai Wenyong Cai Wujun Cai Yijian Cai Yizhou Cai Yuchen Cai Haiying Cai Huacheng Cai Lorenzo Calibbi Junsong Cang Guofu Cao Jianshe Cao Antoine Chance Xuejun Chang Yue Chang Zhe Chang Xinyuan Chang Wei Chao Auttakit Chatrabhuti Yimin Che Yuzhi Che Bin Chen Danping Chen Fuqing Chen Fusan Chen Gang Chen Guoming Chen Hua-Xing Chen Huirun Chen Jinhui Chen Ji-Yuan Chen Kai Chen Mali Chen Mingjun Chen Mingshui Chen Ning Chen Shanhong Chen Shanzhen Chen Shao-Long Chen Shaomin Chen Shiqiang Chen Tianlu Chen Wei Chen Xiang Chen Xiaoyu Chen Xin Chen Xun Chen Xurong Chen Ye Chen Ying Chen Yukai Chen Zelin Chen Zilin Chen Gang Chen Boping Chen Chunhui Chen Hok Chuen Cheng Huajie Cheng Shan Cheng Tongguang Cheng Yunlong Chi Pietro Chimenti Wen Han Chiu Guk Cho Ming-Chung Chu Xiaotong Chu Ziliang Chu Guglielmo Coloretti Andreas Crivellin Hanhua Cui Xiaohao Cui Zhaoyuan Cui Brunella D'Anzi ling-Yun Dai Xinchen Dai Xuwen Dai Antonio De Maria Nicola De Filippis Christophe De La Taille Francesca De Mori Chiara De Sio Elisa Del Core Shuangxue Deng Wei-Tian Deng Zhi Deng Ziyan Deng Bhupal Dev Tang Dewen Biagio Di Micco Ran Ding Siqin Dingl Yadong Ding Haiyi Dong Jianin AGH University of Science and Technology Faculty of Physics and Applied Computer ScienceKrakow Anhui University HefeiAnhui Applied Physics Department Federal Urdu University of ArtsScience and TechnologyIslamabad Banaras Hindu University Institute of ScienceVaranasi Bandirma Onyedi Eylul University Bandirma Beihang University Beijing Beijing Computational Science Research Center Beijing Beijing Conveyi LTD Beijing Beijing Glass Research Institute Co. LtdBeijing Beijing Institute of Technology Beijing Beijing Normal University Beijing Brown University ProvidenceRI Budker Institute of Nuclear Physics Novosibirsk Cadi Ayyad University Laboratory of Fundamental and Applied PhysicsPolydisciplinary FacultyMarrakech Cairo University Giza Center for Theory and Computation National Tsing Hua UniversityHsinchu Central China Normal University WuhanHubei Central South University ChangshaHunan Centro de Fisica Teorica de Particulas Universidade Tecnica de LisboaLisboa Chengdu KaitengSifang Digital Radio&TV Equipment Co. LtdChengduSichuan China academy of engineering physics MianyangSichuan China building materials academy Beijing China Center of Advanced Science and Technology Beijing China Institute of Atomic Energy Beijing China Jiliang University HangzhouZhejiang China Nuclear Instrument CO. LTDBeijing China University of Geosciences Beijing China University of Geosciences WuhanHubei China University of Mining and Technology XuzhouJiangsu China West Normal University NanchongSichuan Chongqing University Department of PhysicsChongqing Chulalongkorn University Bangkok City University of Hong Kong Department of PhysicsHong Kong Cockcroft Institute Daresbury Cornell University IthacaNY CPPM(AMU/IPhU&CNRS/INP) Marseille Dalian Minzu University DalianLiaoning Dalian University of Technology Department of PhysicsDalian Deutsches Elektronen-Synchrotron DESY Hamburg Dzhelepov Laboratory of Nuclear Problems of Joint Institute for Nuclear Research(DLNP JINR) Dubna East China University Of Science And Technol

The Circular Electron Positron Collider(CEPC)is a large scientific project initiated and hosted by China,fostered through extensive collaboration with international *** complex comprises four accelerators:a 30 GeV linac,a 1.1 GeV Damping Ring,a Booster capable of achieving energies up to 180 GeV,and a Collider operating at varying energy modes(Z,W,H,and tt).The linac and Damping Ring are situated on the surface,while the subterranean Booster and Collider are housed in a 100 km circumference underground tunnel,strategically accommodating future expansion with provisions for a potential Super Proton Proton Collider(SPPC).The CEPC primarily serves as a Higgs *** its baseline design with synchrotron radiation(SR)power of 30 MW per beam,it can achieve a luminosity of 5×10^(34)cm^(-2)s^(-1)per interaction point(IP),resulting in an integrated luminosity of 13 ab^(-1)for two IPs over a decade,producing 2.6 million Higgs *** the SR power to 50 MW per beam expands the CEPC's capability to generate 4.3 million Higgs bosons,facilitating precise measurements of Higgs coupling at sub-percent levels,exceeding the precision expected from the HL-LHC by an order of *** Technical Design Report(TDR)follows the Preliminary Conceptual Design Report(Pre-CDR,2015)and the Conceptual Design Report(CDR,2018),comprehensively detailing the machine's layout,performance metrics,physical design and analysis,technical systems design,R&D and prototyping efforts,and associated civil engineering ***,it includes a cost estimate and a preliminary construction timeline,establishing a framework for forthcoming engineering design phase and site selection *** is anticipated to begin around 2027-2028,pending government approval,with an estimated duration of 8 *** commencement of experiments and data collection could potentially be initiated in the mid-2030s.

关键词： initiated exceeding precise