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Accelerated life-time test of MEA durability under vehicle operating conditions in PEM fuel cell
Tian TIAN, Jianjun TANG, Wei GUO, Mu PAN
《能源前沿(英文)》 2017年 第11卷 第3期 页码 326-333 doi: 10.1007/s11708-017-0489-z
关键词: polymer electrolyte membrane fuel cell accelerated life-time test load cycling test durability
Sustainability of steel structures: towards an integrated approach to life-time engineering design
Raffaele LANDOLFO, Lucrezia CASCINI, Francesco PORTIOLI
《结构与土木工程前沿(英文)》 2011年 第5卷 第3期 页码 304-314 doi: 10.1007/s01709-011-0123-9
关键词: sustainability life-time engineering performance based design durability metal structures
Erratum to: Determination of cut-off time of accelerated aging test under temperature stress for LED
Jian Hao, Lei Jing, Hong-liang Ke, Yao Wang, Qun Gao, Xiao-xun Wang, Qiang Sun, Zhi-jun Xu,sunq@ciomp.ac.cn
《信息与电子工程前沿(英文)》 2017年 第18卷 第10期 页码 1678-1678 doi: 10.1631/FITEE.15e0483
关键词: LED lamp Accelerated aging test Medium lifetime Moving average error
张辉睿
《中国工程科学》 2015年 第17卷 第5期 页码 31-37
传统的可靠性验证试验由于一般在使用条件下进行,且只利用失效数据进行判定,往往需要大量的时间和费用。这对于高可靠长寿命船舶设备可靠性指标的验证是不可接受的。本文提出一种基于风险分析的可靠性指标加速验证方法,该方法利用退化数据进行分析,在试验风险可接受的条件下提前截止试验,得出验证结果。同时,利用高环境应力可以加速退化过程,进一步减少试验时间。本文具体给出了分析和计算提前截止试验和利用高应力进行试验产生的额外风险的方法,保证了验证结果的真实可靠。最后利用案例证实了该方法在减少验证试验时间上的有效性。
LED灯具温度应力加速老化截止时间的确定 Article
Jian HAO, Lei JING, Hong-liang KE, Yao WANG, Qun GAO, Xiao-xun WANG, Qiang SUN, Zhi-jun XU
《信息与电子工程前沿(英文)》 2017年 第18卷 第10期 页码 1678-1678 doi: 10.1631/FITEE.1500483
Pretest analysis of shake table response of a two-span steel girder bridge incorporating accelerated
Elmira SHOUSHTARI, M. Saiid SAIIDI, Ahmad ITANI, Mohamed A. MOUSTAFA
《结构与土木工程前沿(英文)》 2020年 第14卷 第1期 页码 169-184 doi: 10.1007/s11709-019-0590-y
关键词: shake table test accelerated bridge construction steel girder bridge OpenSEES UHPC simple for dead continuous for live
何宇廷
《中国工程科学》 2006年 第8卷 第6期 页码 23-27
在分析基准使用条件下飞机结构寿命包线的基础上,给出飞机结构在非基准使用条件下的寿命包线的绘制方法,阐明了在非基准使用条件下对飞机结构进行单机寿命监控的原理与方法。最后以飞机首翻后进行第二次大修的大修间隔期监控为例进行了分析说明。
Monitoring corrosion of reinforcement in concrete structures via fiber Bragg grating sensors
Zhupeng ZHENG, Xiaoning SUN, Ying LEI
《机械工程前沿(英文)》 2009年 第4卷 第3期 页码 316-319 doi: 10.1007/s11465-009-0040-y
关键词: fiber Bragg grating (FBG) corrosion concrete structures accelerated corrosion test
Enhancing fatigue life of cylinder-crown integrated structure by optimizing dimension
Weiwei ZHANG,Xiaosong WANG,Zhongren WANG,Shijian YUAN
《机械工程前沿(英文)》 2015年 第10卷 第1期 页码 102-110 doi: 10.1007/s11465-015-0329-y
Cylinder-crown integrated hydraulic press (CCIHP) is a new press structure. The hemispherical hydraulic cylinder also functions as a main portion of crown, which has lower weight and higher section modulus compared with the conventional hydraulic cylinder and press crown. As a result, the material strength capacity is better utilized. During the engineering design of cylinder-crown integrated structure, in order to increase the fatigue life, structural optimization on the basis of the adaptive macro genetic algorithms (AMGA) is first conducted to both reduce weight and decrease peak stress. It is shown that the magnitude of the maximum principal stress is decreased by 28.6%, and simultaneously the total weight is reduced by 4.4%. Subsequently, strain-controlled fatigue test is carried out, and the stress-strain hysteresis loops and cyclic hardening curve are obtained. Based on linear fit, the fatigue properties are calculated and used for the fatigue life prediction. It is shown that the predicted fatigue life is significantly increased from 157000 to 1070000 cycles after structural optimization. Finally, according to the optimization design, a 6300 kN CCIHP has been manufactured, and priority application has been also suggested.
关键词: cylinder-crown integrated hydraulic press (CCIHP) adaptive macro genetic algorithms (AMGA) strain-controlled fatigue test
Time-domain and frequency-domain approaches to identification of bridge flutter derivatives
Zhengqing CHEN
《结构与土木工程前沿(英文)》 2009年 第3卷 第2期 页码 173-179 doi: 10.1007/s11709-009-0034-1
关键词: long-span bridges wind-induced vibration flutter derivatives forced vibration test time-domain method frequency-domain method
林明,金平,孙明礼
《中国工程科学》 2001年 第3卷 第3期 页码 65-67
飞机使用环境谱中飞行环境谱和停放环境谱的组合就是飞行─停放─飞行环境谱。大多数军用飞机地面停放时间占飞机使用寿命的90%以上。海军飞机所处的高温、高湿、高盐雾腐蚀环境对飞机使用寿命有很大影响。腐蚀疲劳直接影响疲劳裂纹形成寿命。飞机使用寿命必须应用飞机使用环境谱,考虑飞行小时、日历时间和综合使用飞行小时。列举海军某直升机主桨毂轴向铰轴颈裂纹故障,通过波音公司飞机结构疲劳分析方法,在飞行小时、日历时间和综合使用飞行小时方面对其翻修期进行了探讨。
Digitalization optical open loop test system for fiber optic gyroscope
ZHANG Deng-wei, SHU Xiao-wu, MU Xu-dong, LIU Cheng
《机械工程前沿(英文)》 2006年 第1卷 第4期 页码 434-438 doi: 10.1007/s11465-006-0053-8
关键词: stability real-time controlling standardization controlling procedure complete digitalization
Tingting MA, Ying TENG, Peter CHRISTIE, Yongming LUO, Yongshan CHEN, Mao YE, Yujuan HUANG
《环境科学与工程前沿(英文)》 2013年 第7卷 第1期 页码 31-42 doi: 10.1007/s11783-012-0463-2
关键词: phthalic acid esters quality assurance and quality control soil type accelerated solvent extraction certified reference materials
Precast steel–UHPC lightweight composite bridge for accelerated bridge construction
Shuwen DENG, Xudong SHAO, Xudong ZHAO, Yang WANG, Yan WANG
《结构与土木工程前沿(英文)》 2021年 第15卷 第2期 页码 364-377 doi: 10.1007/s11709-021-0702-3
关键词: accelerated bridge construction ultrahigh-performance concrete steel–UHPC composite bridge UHPC girder-to-girder joint
标题 作者 时间 类型 操作
Accelerated life-time test of MEA durability under vehicle operating conditions in PEM fuel cell
Tian TIAN, Jianjun TANG, Wei GUO, Mu PAN
期刊论文
Sustainability of steel structures: towards an integrated approach to life-time engineering design
Raffaele LANDOLFO, Lucrezia CASCINI, Francesco PORTIOLI
期刊论文
Erratum to: Determination of cut-off time of accelerated aging test under temperature stress for LED
Jian Hao, Lei Jing, Hong-liang Ke, Yao Wang, Qun Gao, Xiao-xun Wang, Qiang Sun, Zhi-jun Xu,sunq@ciomp.ac.cn
期刊论文
LED灯具温度应力加速老化截止时间的确定
Jian HAO, Lei JING, Hong-liang KE, Yao WANG, Qun GAO, Xiao-xun WANG, Qiang SUN, Zhi-jun XU
期刊论文
Pretest analysis of shake table response of a two-span steel girder bridge incorporating accelerated
Elmira SHOUSHTARI, M. Saiid SAIIDI, Ahmad ITANI, Mohamed A. MOUSTAFA
期刊论文
Monitoring corrosion of reinforcement in concrete structures via fiber Bragg grating sensors
Zhupeng ZHENG, Xiaoning SUN, Ying LEI
期刊论文
Enhancing fatigue life of cylinder-crown integrated structure by optimizing dimension
Weiwei ZHANG,Xiaosong WANG,Zhongren WANG,Shijian YUAN
期刊论文
Time-domain and frequency-domain approaches to identification of bridge flutter derivatives
Zhengqing CHEN
期刊论文
Digitalization optical open loop test system for fiber optic gyroscope
ZHANG Deng-wei, SHU Xiao-wu, MU Xu-dong, LIU Cheng
期刊论文
A new procedure combining GC-MS with accelerated solvent extraction for the analysis of phthalic acid
Tingting MA, Ying TENG, Peter CHRISTIE, Yongming LUO, Yongshan CHEN, Mao YE, Yujuan HUANG
期刊论文