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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

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 10,   Pages 1678-1678 doi: 10.1631/FITEE.15e0483

Abstract: Erratum to: , 2017 18(8):1197-1204. doi:

Keywords： LED lamp     Accelerated aging test     Medium lifetime     Moving average error    

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Erratum to: Determination of cut-off time of accelerated aging test under temperature stress for LED Article

Jian HAO, Lei JING, Hong-liang KE, Yao WANG, Qun GAO, Xiao-xun WANG, Qiang SUN, Zhi-jun XU

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 10,   Pages 1678-1678 doi: 10.1631/FITEE.1500483

Abstract: 在LED灯具加速老化过程中，为获得最小截止时间，对其寿命进行快速预估，本文采用5阶滑动平均误差方法分析数据。选用同批次的16个样本，分别进行80℃和85℃应力条件下的加速老化。首先，采用e指数对光通维持率进行拟合，获得每个灯具的加速寿命，进而采用威布尔分布对加速寿命进行拟合，获得中位寿命。其次，采用平均滑动误差方法，可获取不同截止时间下中位寿命预估误差。结果表明：加速老化过程中，存在最小截止时间，该时间可通过滑动平均误差和截止时间的关系确定；当截止时间小于该值时，寿命预估不合理；寿命预估误差随截止时间增加而逐渐减小。对于该类LED灯具，80℃时最小截止时间为1104小时，寿命预估误差为1.15%；85℃时最小截止时间为936小时，寿命预估误差为1.24%。当寿命估计误差约为0.46％时，80 ℃和85 ℃对应的中位寿命分别为7310小时和4598小时。

Keywords： LED lamp     Accelerated aging test     Medium lifetime     Moving average error    

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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

Frontiers in Energy 2017, Volume 11, Issue 3,   Pages 326-333 doi: 10.1007/s11708-017-0489-z

Abstract: In this paper, a novel accelerated test method was proposed to analyze the durability of MEA, considering

Keywords： polymer electrolyte membrane fuel cell     accelerated life-time test     load cycling test     durability    

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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

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 1,   Pages 169-184 doi: 10.1007/s11709-019-0590-y

Abstract: This paper presents pretest analysis of a shake table test model of a 0.35-scale, two-span, steel plateSix accelerated bridge construction connections were incorporated in the bridge model.

Keywords： shake table test     accelerated bridge construction     steel girder bridge     OpenSEES     UHPC     simple for dead continuous    

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Zero-failure accelerated reliability demonstration test method based on degradation model

Zhang Huirui

Strategic Study of CAE 2015, Volume 17, Issue 5,   Pages 31-37

Abstract: We can employ degradation data to predict whether a unit will pass the test by the end of test，and thetest can be terminated early when this prediction does not cost unacceptable risk.Thus it is necessary to propose a method that take advantage of both degradation data and acceleratedtest to reduce the test time and cost，which is done by this article.test for each unit.

Keywords： degradation model；accelerated testing；life demonstration；risk analysis；optimum plan    

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Damage mode and failure mechanism of starch based API gluelam bonding

Shi Junyou,Xu Wenbiao and Wang Shumin

Strategic Study of CAE 2014, Volume 16, Issue 4,   Pages 40-44

Abstract: isocycante（API）gluelam bonding as the research object，with tensile shear strength as a key evaluation index，acceleratedaging tests on gluelam bonding to study damage mode and failure mechanism of the bonding The resultsshow that：the adhesive fracture properties of ductile fracture structure，and with the increase of agingIn the early stage of the aging tests，the effect of temperature on the tensile shear strength is moreimportant；however，with the increase of aging time，the effect of humidity on tensile shear strength becomes

Keywords： bonding structure     accelerated aging     fracture character     damage mode    

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the characterization of pore structures and permeability of diesel contaminated clays under different aging

Frontiers of Structural and Civil Engineering   Pages 1264-1280 doi: 10.1007/s11709-023-0921-x

Abstract: to characterize the pore structures and investigate the permeability characteristics of clay after agingThe results of the MIP tests showed that aging leads to reductions in porosity and average diameter,The XRμCT analysis yielded consistent results; it showed that aging renders pores more spherical andMechanistic analysis showed that aging weakens interparticle cohesion; this causes large agglomeratesBoth aging and diesel content can weaken the permeation characteristics of soil.

Keywords： MIP     XRμCT     aging     diesel content     pore structure     permeability characteristics    

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Mechanism and characterization of microplastic aging process: A review

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 8, doi: 10.1007/s11783-023-1700-6

Abstract:

● Methods for estimating the aging of environmental micro-plastics

Keywords： Microplastics     Aging     Degradation     Characterization     Mechanism    

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Monitoring corrosion of reinforcement in concrete structures via fiber Bragg grating sensors

Zhupeng ZHENG, Xiaoning SUN, Ying LEI

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 3,   Pages 316-319 doi: 10.1007/s11465-009-0040-y

Abstract: Corrosion of steel and rebar in concrete structures is one of the most frequent reasons for civil infrastructure failures. Thus, improving the effective corrosion sensor technology can greatly reduce cost and provide safe structures with long service lives. However, assessing the corrosion condition of rebars is not simple because they are buried in concrete. In this paper, using fiber Bragg grating (FBG), a corrosion sensor for monitoring steel rebars embedded in a concrete structure is developed and validated by experiments. Based on the fact that the volume and diameter of a rebar embedded in concrete will enlarge due to corrosion, an FBG packaged with fiber-reinforced plastics (FRP) is wrapped on the steel bar. During corrosion, the increase in the bar diameter leads to the increase in fiber strain, which can be measured by the shift of the wavelength of FBG. Performances of the corrosion sensor are validated by accelerating corrosion in lab experiments. The corrosion sensor is embedded in a concrete specimen put in a 5% sodium chloride solution with a constant current. Experimental results show that the corrosion sensor can monitor the concurrence of corrosion of rebars in concrete. The corrosion extent can be quantitatively evaluated through the change in the wavelength of FBG. Therefore, the corrosion sensor developed in this paper is feasible for monitoring the early corrosion of rebars in concrete.

Keywords： fiber Bragg grating (FBG)     corrosion     concrete structures     accelerated corrosion test    

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Aging properties and aging mechanism of activated waste rubber powder modified asphalt binder based on

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 4,   Pages 625-636 doi: 10.1007/s11709-023-0938-1

Abstract: Subsequently, the aging properties and aging mechanism of activated waste rubber powder modified asphaltA comparison and analysis of the rheological aging parameters of ARMA and RMA show that LBP activationdiminishes the aging sensitivity of ARMA.of asphalt light components by heat and the damage to the colloidal structure by oxygen during the agingprocess are impeded, and the thermal-oxidative aging resistance of ARMA is improved.

Keywords： rubber powder modified asphalt     aging     mechanism     rheological     characterization    

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Insights into influence of aging processes on zero-valent iron modified biochar in copper(II) immobilization

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 7,   Pages 880-892 doi: 10.1007/s11705-022-2282-8

Abstract: by natural forces after entering into the environment, while there are seldom studies reported the agingIn this work, the hydrogen peroxide and hydrochloric acid solution were applied to simulate aging conditionsAfter aging, the decreasing of capacity could be mainly attributed to the inhibition of ion-exchangeMoreover, the plant growth and soil leaching experiments also proved the effects of aging treatment,reduced the inhibition of copper(II) bioavailability and increased the mobility of copper(II) after aging

Keywords： zero-valent iron modified biochar     aging processes     copper removal     adsorption     pilot-scale experiments    

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Projections of heat-related excess mortality in China due to climate change, population and aging

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 11, doi: 10.1007/s11783-023-1732-y

Abstract:

● Four scenarios were used to project heat-related excess mortality in China.

Keywords： Heat-related excess mortality     LMDI     Aging     YLL     VSLY    

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Outdoor aging of road asphalt and SBS modified asphalt

Li XIANG, Juan TU, Jian CHENG, Guohe QUE

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 1,   Pages 35-42 doi: 10.1007/s11705-010-0551-4

Abstract: The process of performance degradation of road asphalt (RA) is regarded as aging.method to evaluate this process is developed; meanwhile, photo-oxidative aging (aging in an atmosphericenvironment, which is referred to as “outdoor aging” in this paper) of asphalt remains at the initialThe outdoor natural ultraviolet (UV) aging of RA and SBS modified asphalt (SBSMA) are investigated inThe group components of RA and SBSMA also change during UV aging.

Keywords： asphalt     SBS     modified road asphalt     outdoor aging     ultraviolet    

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Role of brown adipose tissue in metabolic syndrome, aging, and cancer cachexia

Meng Dong, Jun Lin, Wonchung Lim, Wanzhu Jin, Hyuek Jong Lee

Frontiers of Medicine 2018, Volume 12, Issue 2,   Pages 130-138 doi: 10.1007/s11684-017-0555-2

Abstract:

Brown adipose tissue (BAT) plays a fundamental role in maintaining body temperature by producing heat. BAT that had been know to exist only in mammals and the human neonate has received great attention for the treatment of obesity and diabetes due to its important function in energy metabolism, ever since it is recently reported that human adults have functional BAT. In addition, beige adipocytes, brown adipocytes in white adipose tissue (WAT), have also been shown to take part in whole body metabolism. Multiple lines of evidence demonstrated that transplantation or activation of BAT or/and beige adipocytes reversed obesity and improved insulin sensitivity. Furthermore, many genes involved in BAT activation and/or the recruitment of beige cells have been found, thereby providing new promising strategies for future clinical application of BAT activation to treat obesity and metabolic diseases. This review focuses on recent advances of BAT function in the metabolic aspect and the relationship between BAT and cancer cachexia, a pathological process accompanied with decreased body weight and increased energy expenditure in cancer patients. The underlying possible mechanisms to reduce BAT mass and its activity in the elderly are also discussed.

Keywords： brown adipose tissue     beige adipocyte     anti-obesity     anti-diabetes     cancer cachexia     aging    

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Effect of styrene-butadiene-styrene copolymer on the aging resistance of asphalt: An atomistic understanding

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 5,   Pages 1261-1276 doi: 10.1007/s11709-021-0761-5

Abstract: reveal the potential influence of styrene-butadiene-styrene (SBS) polymer modification on the anti-agingperformance of asphalt, and its mechanism, we explored the aging characteristics of base asphalt andThe results illustrate that the SBS asphalt is more susceptible to oxidative aging than the base asphaltIn addition, SBS polymer degrades into small blocks during aging, thus counteracting the hardening of

Keywords： SBS asphalt     oxidative aging     asphalt hardening     ReaxFF     molecular dynamics    

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Title Author Date Type Operation

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

Journal Article

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

Journal Article

Accelerated life-time test of MEA durability under vehicle operating conditions in PEM fuel cell

Tian TIAN, Jianjun TANG, Wei GUO, Mu PAN

Journal Article

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

Journal Article

Zero-failure accelerated reliability demonstration test method based on degradation model

Zhang Huirui

Journal Article

Damage mode and failure mechanism of starch based API gluelam bonding

Shi Junyou,Xu Wenbiao and Wang Shumin

Journal Article

the characterization of pore structures and permeability of diesel contaminated clays under different aging

Journal Article

Mechanism and characterization of microplastic aging process: A review

Journal Article

Monitoring corrosion of reinforcement in concrete structures via fiber Bragg grating sensors

Zhupeng ZHENG, Xiaoning SUN, Ying LEI

Journal Article

Aging properties and aging mechanism of activated waste rubber powder modified asphalt binder based on

Journal Article

Insights into influence of aging processes on zero-valent iron modified biochar in copper(II) immobilization

Journal Article

Projections of heat-related excess mortality in China due to climate change, population and aging

Journal Article

Outdoor aging of road asphalt and SBS modified asphalt

Li XIANG, Juan TU, Jian CHENG, Guohe QUE

Journal Article

Role of brown adipose tissue in metabolic syndrome, aging, and cancer cachexia

Meng Dong, Jun Lin, Wonchung Lim, Wanzhu Jin, Hyuek Jong Lee

Journal Article

Effect of styrene-butadiene-styrene copolymer on the aging resistance of asphalt: An atomistic understanding

Journal Article