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Biranchi PANDA,A. GARG,Zhang JIAN,Akbar HEIDARZADEH,Liang GAO
《机械工程前沿(英文)》 2016年 第11卷 第3期 页码 289-298 doi: 10.1007/s11465-016-0393-y
Friction stir welding (FSW) process has gained attention in recent years because of its advantages over the conventional fusion welding process. These advantages include the absence of heat formation in the affected zone and the absence of large distortion, porosity, oxidation, and cracking. Experimental investigations are necessary to understand the physical behavior that causes the high tensile strength of welded joints of different metals and alloys. Existing literature indicates that tensile properties exhibit strong dependence on the rotational speed, traverse speed, and axial force of the tool that was used. Therefore, this study introduces the experimental procedure for measuring tensile properties, namely, ultimate tensile strength (UTS) and tensile elongation of the welded AA 7020 Al alloy. Experimental findings suggest that a welded part with high UTS can be achieved at a lower heat input compared with the high heat input condition. A numerical approach based on genetic programming is employed to produce the functional relationships between tensile properties and the three inputs (rotational speed, traverse speed, and axial force) of the FSW process. The formulated models were validated based on the experimental data, using the statistical metrics. The effect of the three inputs on the tensile properties was investigated using 2D and 3D analyses. A high UTS was achieved, including a rotational speed of 1050 r/min and traverse speed of 95 mm/min. The results also indicate that 8 kN axial force should be set prior to the FSW process.
关键词: tensile properties ultimate tensile strength tensile elongation friction stir welding tool rotational speed genetic programming welding speed
Shaochun WANG, Xi JIANG, Yun BAI
《结构与土木工程前沿(英文)》 2019年 第13卷 第5期 页码 1200-1213 doi: 10.1007/s11709-019-0546-2
关键词: shield tunneling structural synthetic fiber concrete hand hole segment joint ultimate bearing capacity crack pattern
Yasser SHARIFI, Ali Akbar MAGHSOUDI
《结构与土木工程前沿(英文)》 2014年 第8卷 第1期 页码 46-56 doi: 10.1007/s11709-014-0237-y
关键词: high-strength concrete (HSC) members flexural behavior reinforced concrete experimental results ultimate moment
Hakan T TURKER
《结构与土木工程前沿(英文)》 2022年 第16卷 第8期 页码 1017-1028 doi: 10.1007/s11709-022-0871-8
关键词: testing apparatus & methods plain concrete tensile properties biaxial flexural strength triangular plate method
Zhide Li,Hao Gu,Kaiguang Luo,Charlie Kong,Hailiang Yu,
《工程(英文)》 doi: 10.1016/j.eng.2023.01.019
关键词: Cryorolling Annealing Nickel Strain hardening Ductility
Experimental investigation on mechanical properties of binary and ternary blended pervious concrete
Rekha SINGH, Sanjay GOEL
《结构与土木工程前沿(英文)》 2020年 第14卷 第1期 页码 229-240 doi: 10.1007/s11709-019-0597-4
关键词: mineral admixture ternary compressive strength split tensile strength pervious concrete ultrasonic pulse velocity
Dammika P. K. WELLALA, Ashish Kumer SAHA, Prabir Kumar SARKER, Vinod RAJAYOGAN
《结构与土木工程前沿(英文)》 2021年 第15卷 第1期 页码 124-135 doi: 10.1007/s11709-020-0673-9
关键词: fine crushed aggregates quarry dust compressive strength splitting tensile strength drying shrinkage
The convexity about ultimate bearing hypersurfaces of structures
Chengxi GUO,Tingting GUO
《结构与土木工程前沿(英文)》 2016年 第10卷 第4期 页码 456-461 doi: 10.1007/s11709-016-0334-1
关键词: service limit load ultimate bearing surface convexity generalized force generalized displacement frame structure
Quantification of coarse aggregate shape in concrete
Xianglin GU,Yvonne TRAN,Li HONG
《结构与土木工程前沿(英文)》 2014年 第8卷 第3期 页码 308-321 doi: 10.1007/s11709-014-0266-6
关键词: coarse aggregate form angularity digital image analysis statistical distribution splitting tensile strength
闫东明,林皋
《中国工程科学》 2007年 第9卷 第6期 页码 64-70
对设计强度为10MPa的混凝土立方体试件进行三轴压缩试验,系统研究了等围压条件下混凝土的强 度和变形特性,围压分别为0,4,8,12,16MPa5个量级;同时研究了不等围压条件下混凝土强度变化特性, 试验表明,随着围压增加,混凝土的极限抗压强度有明显增强的趋势;随着小主应力的增加,中主应力的影响 有减弱的趋势;峰值应力处应变随围压增加幅度显著。得出了在不同恒定围压下混凝土的应力应变全过程曲线; 通过与当前文献资料的对比分析,指出了在混凝土结构计算中适用的强度及变形表达式,为工程实践提供了 依据。
Stability analysis of large diameter thin-walled tube beam-columns
PAN Hanming, GUO Yanlin, LIANG Shuo, PEI Shengxing, LIANG Weisheng, WANG Lewen
《结构与土木工程前沿(英文)》 2008年 第2卷 第2期 页码 123-132 doi: 10.1007/s11709-008-0017-7
关键词: ultimate strength nonlinear numerical analytical diameter thin-walled practice
《结构与土木工程前沿(英文)》 页码 1341-1356 doi: 10.1007/s11709-023-0988-4
关键词: steel fiber reinforced concrete freeze–thaw cycling Brazilian disc splitting test acoustic emission technique dynamic splitting tensile acoustic emission properties
QI Dongming, SHAO Jianzhong, WU Minghua, NITTA Kohhei
《化学科学与工程前沿(英文)》 2008年 第2卷 第4期 页码 396-401 doi: 10.1007/s11705-008-0077-1
关键词: maximal uniaxial tensile unfilled excellent tensile influence
Lianzhong ZHANG, Dichen LI, Shenping YAN, Ruidong XIE, Hongliang QU
《机械工程前沿(英文)》 2018年 第13卷 第4期 页码 513-519 doi: 10.1007/s11465-018-0503-0
The mechanical properties of 316L stainless steel repaired with Fe314 under different temperatures and humidities without inert gas protection were studied. Results indicated favorable compatibility between Fe314 and 316L stainless steel. The average yield strength, tensile strength, and sectional contraction percentage were higher in repaired samples than in 316L stainless steel, whereas the elongation rate was slightly lower. The different conditions of humiture environment on the repair sample exerted minimal influence on tensile and yield strengths. The Fe314 cladding layer was mainly composed of equiaxed grains and mixed with randomly oriented columnar crystal and tiny pores or impurities in the tissue. Results indicated that the hardness value of Fe314 cladding layer under different humiture environments ranged within 419–451.1 HV0.2. The field humiture environment also showed minimal impact on the average hardness of Fe314 cladding layers. Furthermore, 316L stainless steel can be repaired through laser cladding by using Fe314 powder without inert gas protection under different temperatures and humidity environments.
关键词: laser cladding repaired performance tensile strength temperature and humidity environment
An artificial neural network model on tensile behavior of hybrid steel-PVA fiber reinforced concrete
Fangyu LIU, Wenqi DING, Yafei QIAO, Linbing WANG
《结构与土木工程前沿(英文)》 2020年 第14卷 第6期 页码 1299-1315 doi: 10.1007/s11709-020-0712-6
关键词: artificial neural network hybrid fiber reinforced concrete tensile behavior sensitivity analysis stress-strain curve
标题 作者 时间 类型 操作
Characterization of the tensile properties of friction stir welded aluminum alloy joints based on axial
Biranchi PANDA,A. GARG,Zhang JIAN,Akbar HEIDARZADEH,Liang GAO
期刊论文
The influence of hand hole on the ultimate strength and crack pattern of shield tunnel segment joints
Shaochun WANG, Xi JIANG, Yun BAI
期刊论文
An experimental study on the flexural behavior of heavily steel reinforced beams with high-strength concrete
Yasser SHARIFI, Ali Akbar MAGHSOUDI
期刊论文
Effect of size on biaxial flexural strength for cement-based materials by using a triangular plate method
Hakan T TURKER
期刊论文
Achieving High Strength and Tensile Ductility in Pure Nickel by Cryorolling with Subsequent Low-Temperature
Zhide Li,Hao Gu,Kaiguang Luo,Charlie Kong,Hailiang Yu,
期刊论文
Experimental investigation on mechanical properties of binary and ternary blended pervious concrete
Rekha SINGH, Sanjay GOEL
期刊论文
Fresh and hardened properties of high-strength concrete incorporating byproduct fine crushed aggregate
Dammika P. K. WELLALA, Ashish Kumer SAHA, Prabir Kumar SARKER, Vinod RAJAYOGAN
期刊论文
Stability analysis of large diameter thin-walled tube beam-columns
PAN Hanming, GUO Yanlin, LIANG Shuo, PEI Shengxing, LIANG Weisheng, WANG Lewen
期刊论文
Acoustic emissions evaluation of the dynamic splitting tensile properties of steel fiber reinforced concrete
期刊论文
Influence of the field humiture environment on the mechanical properties of 316L stainless steel repaired with Fe314
Lianzhong ZHANG, Dichen LI, Shenping YAN, Ruidong XIE, Hongliang QU
期刊论文