ring specimen for deformation and damage behavior analysis of elbow pipe by cyclic load, testing method using the same

• 1. 温度应力环向渗流耦合作用下岩石损伤与渗透测试系统和测试方法 [P] . 中国专利： CN103558136B . 2016.07.06
• 2. 温度应力环向渗流耦合作用下岩石损伤与渗透测试系统和测试方法 [P] . 中国专利： CN103558136A . 2014-02-05
• 3. ring specimen for deformation and damage behavior analysis of elbow pipe by cyclic load testing method using the same [P] . KR102280732B1 . 2021-07-21

  机译： 循环载荷试验方法用相同循环载荷试验方法的戒指变形及损伤行为分析的环标。

• 4. MACHINE FOR TESTING RING SPECIMENS FOR CYCLIC CRACKING RESISTANCE UNDER HARD LOADING [P] . SU1288544A1 . 1987-02-07

  机译： 刚性载荷下用于抗开裂性的环形试样测试机

• 5. DEFORMATION BEHAVIOR ANALYSIS SIMULATION MODEL FOR STRAND WIRE, WORKING METHOD FOR STRAND WIRE, AND DEFORMATION BEHAVIOR ANALYSIS SIMULATION METHOD FOR STRAND WIRE [P] . 日本专利： JP2008146286A . 2008-06-26

  机译： 绞线的变形行为分析模型，绞线的工作方法以及绞线的变形行为分析方法

• 1. Cyclic deformation behaviors of Ti-46Al-2Cr-2Nb-0.15B alloy during thermo-mechanical fatigue tests [J] . XIANG Hong-fu, DAI An-lun, WANG Ji-heng, 中国有色金属学报（英文版） . 2010,第011期
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• 3. Ratcheting Behavior of Weld Joints Under Uniaxial Cyclic Loading Using Miniature Specimen [J] . Jiankai Tang, Zhe Zhang, Hongsheng Lu, 天津大学学报（英文版） . 2019,第003期
• 4. EXCITATION TESTS ON ELBOW PIPE SPECIMENS TO INVESTIGATE FAILURE BEHAVIOR UNDER EXCESSIVE SEISMIC LOADS [C] . Izumi Nakamura, Naoto Kasahara ASME Pressure Vessels and Piping conference . 2015
• 5. Analysis and Design of Test Setup and Loading Fixture for Horizontally Curved Tubular Flange Girder Test Specimen. [D] . Hampe, Kayla Marie. 2012
• 6. Deformation Behavior of Recycled Concrete Aggregate during Cyclic and Dynamic Loading Laboratory Tests [O] . Wojciech Sas, Andrzej Głuchowski, Katarzyna Gabryś, 2016
• 7. Estimation of deformation behavior of TRIP steels - smooth/ringed-notched specimens under monotonic and cyclic loading [O] . Tomita Yoshihiro, Shibutani Yoji 2000
• 8. Effect of Axial Load on Shear Behavior of Short RC Columns under Cyclic Lateral Deformations [R] . Ramirez, H. , Jirsa, J. O. 1980

• 1. BACKGROUND： Vibrio vulnifi cus inside the body could activate the NF-!B signaling pathwayand initiate the inflammatory cascade. The lung is one of the earliest organs affected by sepsisassociated with acute lung injury. High mobility group protein B1 （HMGB1） is an important late-actingpro-infl ammatory cytokine involving in the pathophysiology of sepsis. It is also involved in the injuryprocess in the lung, liver and intestine. There has been no report on the involvement of HMGB1 inVibrio vulnifi cus sepsis-induced lung injury.METHODS： Sixty rats were randomly divided into a normal control group （group A, n=10） anda Vibrio vulnificus sepsis group （group B, n=50）. Sepsis was induced in the rats by subcutaneousinjection of Vibrio vulnificus （concentration 6×108 cfu/mL, volume 0.1 mL/100g）） into the left lowerlimbs. The rats in group B were sacrifi ced separately 1, 6, 12, 24, and 48 hours after the infection.Their lungs were stored as specimens, lung water content was measured, and lung pathology wasobserved under a light microscope. The expressions of the HMGB1 gene and protein in the lungswere detected by RT-PCR and Western blot. Data were analyzed with one-way analysis of variance（ANOVA） and the LSD method for pair-wise comparison between the two groups. P〈0.05 wasconsidered statistically signifi cant.RESULTS： Compared to group A （0.652±0.177）, HMGB1 mRNA expression in the lungs ofgroup B was signifi cantly higher at 0 hour （1.161±0.358, P=0.013）, 24 hours （1.679±0.235, P=0.000）,and 48 hours （1.258±0.274, P=0.004） （P〈0.05）, and peaked at 24 hours. Compared to group A（0.594±0.190）, HMGB1 protein expression at 6 hours （1.408±0.567, P=0.026） after infection wassignificantly increased （P〈0. 05）, and peaked at 24 hours （2.415±1.064, P=0.000） after infection.Compared to group A （0.699±0.054）, lung water content was significantly increased at 6 hours（0.759±0.030, P=0.001）,12 hours （0.767±0.023, P=0.000）, 24 hours （0.771±0.043, P=0.000） and 48hours （0.789±0.137, P=0.000） after infection （P〈0.05）. Compared to group A, pathological changesat 12 hours in group B indicate marked pulmonary vascular congestion, interstitial edema andinfl ammatory infi ltration. Alveolar cavity collapse and boundaries of the alveolar septum could not beclearly identifi ed.CONCLUSION： Vibrio vulnifi cus sepsis can lead to injury in rat lungs, and increased HMGB1expression in lung tissue may be one of the mechanisms for injury from Vibrio vulnifi cus sepsis. [J] . Qiao-meng Qiu ,Zhong-wang Li ,Lu-ming Tang . 世界急诊医学杂志(英文) . 2011,第4期
• 2. Cyclic Deformation and Fatigue Damage Behavior of Cu Monocrystals, Bicrystals and Tricrystals [J] . Wang ZG ,Li XW ,Zhang ZF . 材料科学技术：英文版 . 1999,第6期
• 3. 循环加载过程中岩样的轴向和环向变形特性 [C] . 尤明庆 ,纪多辙 . 中国岩石力学与工程学会第六次学术大会 . 2000
• 4. 变下限梯级循环加卸载下砂岩变形参数与损伤演化规律研究 [A] . 周佳琦 . 2020