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学者姓名：郭金泉
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Abstract ：
Determination of tensile properties is essential for the design and strength assessment of structures. In this study, a modified small punch test (SPT), known as the single-stress small punch test (SS-SPT), was proposed to investigate the tensile properties of five ductile homogeneous materials, namely P91, Q245R, 316SS, 1045 steel, and 2024Al. The SS-SPT specimen was subjected to a single stress state when subjected to a punch force, similar to that of a uniaxial tensile test (UTT) specimen. Additionally, UTT and standard SPT were carried out to investigate the tensile properties of these materials. The thickness of failed standard SPT and SS-SPT specimens was measured using a scanning electron microscope (SEM) and the equivalent fracture strain was calculated. Correlation relationships between each type of SPT and UTT results were established. Experimental results indicated that both the SS-SPT and standard SPT demonstrated comparable accuracy in determining yield stress, ultimate tensile stress, and tensile elongation. However, the SS-SPT exhibited greater accuracy than the standard SPT in determining fracture strain due to direct measurement of the thinnest thickness from the fracture in failed SS-SPT specimens.
Keyword ：
Fracture strain Fracture strain Small punch test Small punch test Tensile properties Tensile properties Tensile test Tensile test
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| GB/T 7714 | Wang, Rongcheng , Lai, Huan Sheng , Zeng, Sixiong et al. A modified small punch test to investigate tensile properties [J]. | THEORETICAL AND APPLIED FRACTURE MECHANICS , 2025 , 136 . |
| MLA | Wang, Rongcheng et al. "A modified small punch test to investigate tensile properties" . | THEORETICAL AND APPLIED FRACTURE MECHANICS 136 (2025) . |
| APA | Wang, Rongcheng , Lai, Huan Sheng , Zeng, Sixiong , Zhong, Yuntao , Sun, Xueliang , Guo, Jinquan et al. A modified small punch test to investigate tensile properties . | THEORETICAL AND APPLIED FRACTURE MECHANICS , 2025 , 136 . |
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Several methods have been developed to determine the axial creep properties of nuclear fuel cladding tubes. However, the anisotropic creep properties of nuclear fuel cladding tubes requires that their circumferential creep behaviour be evaluated as well. Nonetheless, this task remains extremely challenging owing to need to employ unaltered cylindrical cladding tube specimens directly and the general low accuracy of the methods developed for this purpose. The present work addresses these issues by developing a modified small punch creep test (SPCT). Equations are proposed to calculate the creep stress and strain of the modified SPCT. The accuracy of the equations is analysed using the finite element method. Finally, the methodology is applied to investigate the circumferential creep behaviour of an FeCrAl nuclear fuel cladding tube experimentally. These results clearly demonstrate that the modified SPCT is suitable for investigating the creep behaviour of irregularly shaped material specimens with anisotropic creep properties. Moreover, the semi -cylindrical specimens employed in the modified SPCT also enable the effective fracture strain of the specimen to be easily determined.
Keyword ：
Anisotropic creep Anisotropic creep Nuclear fuel cladding tube Nuclear fuel cladding tube Small punch test Small punch test
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| GB/T 7714 | Zhong, Yuntao , Lai, Huan Sheng , Guo, Jinquan et al. Small punch test for investigating circumferential creep in cladding tubes [J]. | INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES , 2024 , 267 . |
| MLA | Zhong, Yuntao et al. "Small punch test for investigating circumferential creep in cladding tubes" . | INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES 267 (2024) . |
| APA | Zhong, Yuntao , Lai, Huan Sheng , Guo, Jinquan , Du, Peinan , Huang, Qifei . Small punch test for investigating circumferential creep in cladding tubes . | INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES , 2024 , 267 . |
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Inspired by the microstructure of the beetle's elytra, a new bionic polycellular tube protective structure based on the fractal principle was proposed in this paper, and its energy absorption characteristics were studied. Firstly, the typical microstructures of two-branch structure (type A), three-branch structure (type B) and mixed-branch structure (type C) of the beetle's elytra were extracted. Based on that, three types of the bionic multicellular thinwalled circular tube (BMTC) were designed, and the reliability of finite element models was verified by experiments. Secondly, the energy absorption characteristics and crushing mechanism of three groups of BMTCs were compared and analyzed by LS-DYNA software, and the analytical expression of mean crushing force (Fm) for BMTCs was established. The results show that the energy absorption structures of type B have better comprehensive energy absorption characteristics. Compared with the traditional ribbed structure, specific energy absorption (SEA) of BMTCs is increased by 36.75 %. In addition, when the central column is connected to the three ribs, the central column has the best deformation resistance. Moreover, the theoretical solutions matched well with the results of numerical simulation. Consequently, the research results provide inspiration for the design of energy absorption protection devices, and theoretical guidance for the analysis of energy absorption characteristics.
Keyword ：
Beetle ' s elytra Beetle ' s elytra Energy absorption characteristics Energy absorption characteristics Fractal principle Fractal principle LS-DYNA LS-DYNA Mean crushing force prediction expression Mean crushing force prediction expression Multicellular thin-walled circular tube Multicellular thin-walled circular tube
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| GB/T 7714 | Wei, Tieping , Zhang, Mengzhi , Lin, Shouqiang et al. New design and energy absorption characteristic study of bionic beetle's elytra under axial compression [J]. | THIN-WALLED STRUCTURES , 2024 , 196 . |
| MLA | Wei, Tieping et al. "New design and energy absorption characteristic study of bionic beetle's elytra under axial compression" . | THIN-WALLED STRUCTURES 196 (2024) . |
| APA | Wei, Tieping , Zhang, Mengzhi , Lin, Shouqiang , Ye, Jianhua , Yan, Xiaolei , Guo, Jinquan . New design and energy absorption characteristic study of bionic beetle's elytra under axial compression . | THIN-WALLED STRUCTURES , 2024 , 196 . |
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For the application of medium-entropy alloys (MEAs) in engineering, high cycle fatigue behavior of CoCrNi-based MEAs with different Al and Ti additions was investigated at room temperature (RT) and 350 degrees C in this study. When Al and Ti contents were increased from 1 to 4 at.% and 2 to 3 at.%, respectively, yield and fatigue strength increased by 70% and 43%, respectively, hardness and ultimate tensile strength increased by 40%, and fracture elongation was >37%. Between RT and 350 degrees C, the effect of temperature on the tensile and fatigue strength was not significant. The fatigue crack propagation resistance increased with increase in Al and Ti contents. Based on the fatigue strength determined in the study, fatigue life prediction equations were derived. Microstructure analysis indicated that higher tensile and fatigue strength were attributed to uniformly distributed precipitates of nanoscale L1(2) particles formed in the FCC matrix.
Keyword ：
fatigue strength fatigue strength high cycle fatigue high cycle fatigue medium-entropy alloy medium-entropy alloy
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| GB/T 7714 | Lai, Huan Sheng , Tang, Chaozhongzheng , Zhong, Yuntao et al. Effect of Al and Ti additions on the high cycle fatigue behavior of CoCrNi-based medium-entropy alloys at room and high temperatures [J]. | FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES , 2023 , 46 (7) : 2603-2616 . |
| MLA | Lai, Huan Sheng et al. "Effect of Al and Ti additions on the high cycle fatigue behavior of CoCrNi-based medium-entropy alloys at room and high temperatures" . | FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES 46 . 7 (2023) : 2603-2616 . |
| APA | Lai, Huan Sheng , Tang, Chaozhongzheng , Zhong, Yuntao , Guo, Jinquan , Huang, Qifei , Sun, Runye . Effect of Al and Ti additions on the high cycle fatigue behavior of CoCrNi-based medium-entropy alloys at room and high temperatures . | FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES , 2023 , 46 (7) , 2603-2616 . |
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Fuel cladding tubes of nuclear power plants are operated at high temperatures. Creep behavior is therefore a crucial factor during the design and safety assessment of fuel cladding tubes. In this study, small punch creep tests (SPCTs) were conducted for tube specimens to examine the creep behavior of FeCrAl fuel cladding tubes. According to Chakrabarty's membrane stretching theory and finite element simulation results, specimen shape had a negligible influence on the equivalent uniaxial creep stress and minimum creep strain rate. Therefore, the calculation equations of equivalent uniaxial creep stress and creep strain of plate specimens were directly used for tube specimens. When the lower die round radius was 0.2 mm, its effect on the calculated creep stress was within 5%, and it was negligible for the calculated minimum creep strain rate. The power law creep model of the FeCrAl fuel cladding tube was obtained based on the test results of SPCT using tube specimens.
Keyword ：
FeCrAl FeCrAl Fuel cladding tube Fuel cladding tube Small punch creep test Small punch creep test Tube specimen Tube specimen
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| GB/T 7714 | Lai, Huan Sheng , Jiang, Xiaowei , Zhong, Yuntao et al. Using tube specimen to investigate the creep behavior of FeCrAl fuel cladding tubes [J]. | ENGINEERING FRACTURE MECHANICS , 2023 , 284 . |
| MLA | Lai, Huan Sheng et al. "Using tube specimen to investigate the creep behavior of FeCrAl fuel cladding tubes" . | ENGINEERING FRACTURE MECHANICS 284 (2023) . |
| APA | Lai, Huan Sheng , Jiang, Xiaowei , Zhong, Yuntao , Du, Peinan , Guo, Jinquan , Huang, Qifei . Using tube specimen to investigate the creep behavior of FeCrAl fuel cladding tubes . | ENGINEERING FRACTURE MECHANICS , 2023 , 284 . |
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应变式称重传感器迟滞是影响质量称量的重要影响因素之一,探索其产生因素及影响具有重要意义.本文在传统双梁型应变式称重传感器的基础上,提出了一种基于宽带光相干的弹性体位移传感测量方法,实现了弹性体弹性滞后与应变式称重传感器迟滞的同步测量,实现了弹性体弹性滞后对应变式称重传感器迟滞影响的定量评价.测试结果表明:1)基于宽带光相干的位移传感测量系统,对弹性体形变位移的测量准确度高、重复性好、性能稳定.2)弹性体弹性滞后误差和应变式传感器迟滞误差总是在所测试最大载荷的一半位置达到最大;加卸载迟滞测试所施加的载荷越大,弹性滞后误差和传感器迟滞误差也越大.3)弹性体的弹性滞后是造成应变式称重传感器迟滞的主要原因,弹性体的弹性滞后误差约占传感器迟滞误差的95％.
Keyword ：
宽带光相干 宽带光相干 应变式 应变式 弹性滞后 弹性滞后 称重传感器 称重传感器 迟滞 迟滞
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| GB/T 7714 | 杨晓翔 , 欧阳忠杰 , 梁伟 et al. 弹性滞后对双梁型应变式称重传感器迟滞特性的影响 [J]. | 厦门大学学报（自然科学版） , 2023 , 62 (4) : 567-575 . |
| MLA | 杨晓翔 et al. "弹性滞后对双梁型应变式称重传感器迟滞特性的影响" . | 厦门大学学报（自然科学版） 62 . 4 (2023) : 567-575 . |
| APA | 杨晓翔 , 欧阳忠杰 , 梁伟 , 高剑虹 , 郭金泉 , 钟舜聪 et al. 弹性滞后对双梁型应变式称重传感器迟滞特性的影响 . | 厦门大学学报（自然科学版） , 2023 , 62 (4) , 567-575 . |
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The study of deadweight force standard machines (DWM) that operate over a wide range is at the leading edge and a hot spot in force metrology. Optimizing the combination method of the weight load has important theoretical significance for improving the stability and accuracy of DWMs. Firstly, the law of weight loading position on a pendulum relevant to the hanging system through dynamical theory and finite element methods was studied, likewise the minimum pendular degree caused by the loading on the upper end of the hanging system was determined. Then, a method for optimal combination of weights was presented and carried out using MATLAB software. A force transducer of 1000 kN was selected to test on a 2 MN DWM, and the results show that the method can effectively improve the repeatability and linearity. Finally, compared with two random combination methods, the repeatability deviation decreased by more than 50%, and the linear deviation by approximately 10%.
Keyword ：
Analysis of pendulum Analysis of pendulum Deadweight force standard machine Deadweight force standard machine Force in wide-range Force in wide-range Optimal combination method Optimal combination method
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| GB/T 7714 | Guo, Jinquan , Xu, Zhimeng , Ge, Zhu et al. Optimal Combination Method for Weights Loading of the Deadweight Force Standard Machine [J]. | MAPAN-JOURNAL OF METROLOGY SOCIETY OF INDIA , 2023 , 38 (3) : 619-628 . |
| MLA | Guo, Jinquan et al. "Optimal Combination Method for Weights Loading of the Deadweight Force Standard Machine" . | MAPAN-JOURNAL OF METROLOGY SOCIETY OF INDIA 38 . 3 (2023) : 619-628 . |
| APA | Guo, Jinquan , Xu, Zhimeng , Ge, Zhu , Lin, Shuo , Wei, Tieping , Liang, Wei et al. Optimal Combination Method for Weights Loading of the Deadweight Force Standard Machine . | MAPAN-JOURNAL OF METROLOGY SOCIETY OF INDIA , 2023 , 38 (3) , 619-628 . |
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The manufacturing process of nuclear fuel cladding tubes endows them with anisotropic material properties. In this study, a small punch testing (SPT) method was established to investigate the circumferential tensile behavior of nuclear fuel cladding tubes. The specimen of the proposed SPT method was bended and stretched in a single stress state under a punching force. The proposed SPT method was then used to analyze the circumferential tensile behavior of a FeCrAl fuel cladding tube. Finite element simulation results indicated that the SPT method established herein determined ultimate tensile stress with higher accuracy than standard SPT because the plastic strain in the proposed method under maximum force is considerably smaller than that in standard SPT. Moreover, the proposed method can more accurately determine yield stress compared with standard SPT, as reflected by the elastic stage in the load-displacement curve that was a straight line. The test results indicated that the proposed SPT can be used to accurately determine the circumferential yield stress and ultimate tensile stress of nuclear fuel cladding tubes.
Keyword ：
Fuel cladding tube Fuel cladding tube Small punch test Small punch test Tensile behavior Tensile behavior Tensile test Tensile test Yield stress Yield stress
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| GB/T 7714 | Lai, Huan Sheng , Wang, Rongcheng , Zhong, Yuntao et al. A modified small punch testing scheme to investigate the circumferential mechanical behavior of nuclear fuel cladding tubes [J]. | JOURNAL OF NUCLEAR MATERIALS , 2023 , 583 . |
| MLA | Lai, Huan Sheng et al. "A modified small punch testing scheme to investigate the circumferential mechanical behavior of nuclear fuel cladding tubes" . | JOURNAL OF NUCLEAR MATERIALS 583 (2023) . |
| APA | Lai, Huan Sheng , Wang, Rongcheng , Zhong, Yuntao , Du, Peinan , Guo, Jinquan , Huang, Qifei . A modified small punch testing scheme to investigate the circumferential mechanical behavior of nuclear fuel cladding tubes . | JOURNAL OF NUCLEAR MATERIALS , 2023 , 583 . |
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A novel weight sensor based on the Michelson interferometer is proposed in this study to meet the demands of complex environments. The sensor uses a dual-beam type elastic element, optimized to enhance its sensitivity. Its deformation under load is sensed by a broadband optical coherence displacement measurement system, which, in combination with the spectrum correction method, enables displacement sensing down to sub-nanometer res-olution. An optical interferometric weight sensor with a rated load of 6 kg is fabricated under laboratory con-ditions, and its performance is verified experimentally. The proposed weight sensor demonstrates good stability and achieves a sensitivity of 146.814 mu m/kg, theoretical resolution of 0.004 g, nonlinearity error of 0.034%, maximum repeatability error of 0.036%, and maximum hysteresis error of 0.055%, with the relative error of the identification threshold not exceeding 0.1%. The proposed weighing method and sensor represent a significant improvement over other reported interferometer-type weight sensors.
Keyword ：
Dual-beam elastic element Dual-beam elastic element Optical coherence Optical coherence Resolution Resolution Sensitivity Sensitivity Weight sensor Weight sensor
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| GB/T 7714 | Ouyang, Zhongjie , Liang, Wei , Yang, Xiaoxiang et al. High-sensitivity weighing sensor based on broadband optical coherence displacement measurement of a dual-beam elastic element [J]. | MEASUREMENT , 2023 , 216 . |
| MLA | Ouyang, Zhongjie et al. "High-sensitivity weighing sensor based on broadband optical coherence displacement measurement of a dual-beam elastic element" . | MEASUREMENT 216 (2023) . |
| APA | Ouyang, Zhongjie , Liang, Wei , Yang, Xiaoxiang , Guo, Jinquan , Lai, Zhengchuang , Lin, Jiewen et al. High-sensitivity weighing sensor based on broadband optical coherence displacement measurement of a dual-beam elastic element . | MEASUREMENT , 2023 , 216 . |
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Q245R steel has good heat and corrosion resistant and is used in various applications, such as reactors, regenerators, reformed gas steam generators, and other equipment. In this study, the creep behaviour of Q245R steel at the temperature of 550 degrees C is investigated. In addition to the modified Kachanov-Robotnov (K-R) method, the traditional and modified ? projection methods were employed to establish the creep constitutive equations of Q245R steel. The results revealed that at small strains, the creep prediction curve was in good agreement with the test curve, and the prediction accuracy of the modified ? projection method was better than that of the other two models.
Keyword ：
creep model creep model Q245R steel Q245R steel theta projection method theta projection method
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| GB/T 7714 | Guo, Jinquan , Tang, Chaozhongzheng , Wang, Fang et al. Creep behaviour of Q245R steel at 550 degrees C [J]. | MATERIALS AT HIGH TEMPERATURES , 2023 , 40 (3) : 210-217 . |
| MLA | Guo, Jinquan et al. "Creep behaviour of Q245R steel at 550 degrees C" . | MATERIALS AT HIGH TEMPERATURES 40 . 3 (2023) : 210-217 . |
| APA | Guo, Jinquan , Tang, Chaozhongzheng , Wang, Fang , Liu, Kanglin , Zhang, Jingwei , Lai, Huan Sheng . Creep behaviour of Q245R steel at 550 degrees C . | MATERIALS AT HIGH TEMPERATURES , 2023 , 40 (3) , 210-217 . |
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