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Nonlinear dynamic behavior of rotating blade with breathing crack

Laihao YANG, Zhu MAO, Shuming WU, Xuefeng CHEN, Ruqiang YAN

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 1,   Pages 196-220 doi: 10.1007/s11465-020-0609-z

Abstract: This study aims at investigating the nonlinear dynamic behavior of rotating blade with transverse crackA novel nonlinear rotating cracked blade model (NRCBM), which contains the spinning softening, centrifugalThe dynamic behavior of rotating cracked blade is then investigated with NRCBM, and the nonlinear damageindicator (NDI) is introduced to characterize the nonlinearity caused by blade crack.The results show that NDI is a distinguishable indicator for the severity level estimation of the crack

Keywords： rotating blade     breathing crack     nonlinear vibration     nonlinear damage indicator    

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Nonlinear cumulative damage model for multiaxial fatigue

SHANG De-guang, SUN Guo-qin, DENG Jing, YAN Chu-liang

Frontiers of Mechanical Engineering 2006, Volume 1, Issue 3,   Pages 265-269 doi: 10.1007/s11465-006-0035-x

Abstract: On the basis of the continuum fatigue damage theory, a nonlinear uniaxial fatigue cumulative damage modelIn order to describe multiaxial fatigue damage characteristics, a nonlinear multiaxial fatigue cumulativedamage model is developed based on the critical plane approach.The recurrence formula of fatigue damage model was derived under multilevel loading, which is used toThe results showed that the proposed nonlinear multiaxial fatigue cumulative damage model is better than
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The Review of Ascertainable Fatigue Cumulative Damage Rule

Yang Xiaohua,Yao Weixing,Duan Chengmei

Strategic Study of CAE 2003, Volume 5, Issue 4,   Pages 81-87

Abstract:

Famous Miner - Palmgren linear damage rule has been presented for 70 years.Fatigue cumulative damage rule has been perfecting and developing.Based on the characteristics of fatigue damage and cumulative damage rule, this paper divided the rulesOne is linear cumulative damage rule. The other is non-linear cumulative damage rule (NLCDR).The main questions of fatigue cumulative damage rule are answered.

Keywords： fatigue     linear and nonlinear     cumulative damage     damage mechanics     energy    

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Regional seismic-damage prediction of buildings under mainshock–aftershock sequence

Xinzheng LU, Qingle CHENG, Zhen XU, Chen XIONG

Frontiers of Engineering Management 2021, Volume 8, Issue 1,   Pages 122-134 doi: 10.1007/s42524-019-0072-x

Abstract: Aftershocks further damage buildings weakened by mainshocks.is proposed in this study based on city-scale nonlinear time-history analysis (THA).Moreover, city-scale nonlinear THA is adopted to predict building seismic damage subjected to MS–AS sequencesThe accuracy and reliability of city-scale nonlinear THA for an MS–AS sequence are validated by as-recordedcan be predicted reasonably and accurately by city-scale nonlinear THA. (2) An MS–AS sequence can be

Keywords： regional seismic damage prediction     city-scale nonlinear time-history analysis     mainshock–aftershock sequence    

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Midline2 is overexpressed and a prognostic indicator in human breast cancer and promotes breast cancer

Frontiers of Medicine 2021, Volume 15, Issue 6,   Pages 942-942 doi: 10.1007/s11684-021-0876-z

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Screening of indicator pharmaceuticals and personal care products in landfill leachates: a case study

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 9, doi: 10.1007/s11783-023-1716-y

Abstract:

● A systematic framework was developed to identify i-PPCPs for landfill leachate.

Keywords： Landfill leachates     PPCPs     Indicator     Screening criteria     Source-specificity    

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Investigating the role of exiting vehicles and turn indicator usage in gap acceptance at single-lane

Nathan P. BELZ

Frontiers of Structural and Civil Engineering 2017, Volume 11, Issue 1,   Pages 8-16 doi: 10.1007/s11709-016-0365-7

Abstract: Results prompt the consideration of more consistent guidance on and enforcement of turn indicator use

Keywords： roundabouts     exiting vehicles     turn indicator use     headways    

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Modeling effects of a tidal barrage on water quality indicator distribution in the Severn Estuary

Guanghai GAO, Roger A. FALCONER, Binliang LIN

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 2,   Pages 211-218 doi: 10.1007/s11783-012-0464-1

Abstract: to assess the impacts of proposed Severn Barrage on the hydrodynamic, sediment transport and faecal indicator

Keywords： water quality indicator     Severn Estuary     numerical model     tidal energy    

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Water environment security indicator system for urban water management

Tian HAO, Pengfei DU, Yun GAO

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 5,   Pages 678-691 doi: 10.1007/s11783-012-0450-7

Abstract: environment management, a systematic approach, encompassing several steps including establish ideal indicatorand organize discussion workshop, should be followed to establish a comprehensive water environment indicatorrelating to water environment security as well as design an appropriate water environment security indicator

Keywords： water environment security     supervision and management     monitoring parameter     indicator system     Suzhou    

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China’s Agriculture Green Development: from Concept to Actions

Frontiers of Agricultural Science and Engineering doi: 10.15302/J-FASE-2023512

Abstract:

● A target-threshold indicator evaluation system is proposed to measure

Keywords： agricultural transformation     Agriculture Green Development     historical trend     indicator system     theoretical    

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Nonlinear numerical simulation of punching shear behavior of reinforced concrete flat slabs with shear-heads

Dan V. BOMPA, Ahmed Y. ELGHAZOULI

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 2,   Pages 331-356 doi: 10.1007/s11709-019-0596-5

Abstract: reinforced concrete flat slabs, provided with fully-embedded shear-heads, through detailed three-dimensional nonlinearnumerical simulations and parametric assessments using concrete damage plasticity models.Validations of the adopted nonlinear finite element procedures are carried out against experimental results

Keywords： non-linear numerical modelling     concrete damage plasticity     RC flat slabs     shear-heads     punching shear    

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Midline2 is overexpressed and a prognostic indicator in human breast cancer and promotes breast cancer

Lan Wang,Jueheng Wu,Jie Yuan,Xun Zhu,Hongmei Wu,Mengfeng Li

Frontiers of Medicine 2016, Volume 10, Issue 1,   Pages 41-51 doi: 10.1007/s11684-016-0429-z

Abstract:

Midline2 (MID2) is an ubiquitin-conjugating E2 enzyme linked to tumor progression and a novel interacting partner of breast cancer 1, early-onset (BRCA1). However, the role of MID2 in breast cancer remains unknown. This study investigated the expression, prognostic value, and role of MID2 in breast cancer. The expression of MID2 mRNA and protein was significantly upregulated in breast cancer tissue and established cell lines compared with that in normal breast epithelial cells and paired adjacent non-tumor tissue (P<0.001). Immunohistochemical analysis demonstrated that MID2 was overexpressed in 272 of 284 (95.8%) paraffin-embedded, archived breast cancer tissue. Moreover, MID2 expression increased with advanced clinical stage (P<0.001). High MID2 expression was significantly associated with advanced clinical stages and T, N, and M staging (all P<0.05). Univariate and multivariate analyses indicated that high MID2 expression was an independent prognostic factor for poor overall survival in the entire cohort (93.73 vs. 172.1 months; P<0.001, log-rank test) and in subgroups with stages Tis+ I+ II and III+ IV. Furthermore, 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2H-tetrazolium bromide colony formation, and anchorage-independent growth ability assays were conducted. Results showed that siRNA silencing of MID2 expression significantly reduced MCF-7 and MDA-MB-231 cell proliferation in vitro and blocked the growth of MDA-MB-231 cell xenograft tumors in vivo (P<0.05). This study indicated that MID2 may be a novel prognostic marker and interventional target in breast cancer.

Keywords： breast cancer     MID2     proliferation     overall survival     xenograft    

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Windborne debris damage prediction analysis

Fangfang SONG, Jinping OU,

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 3,   Pages 326-330 doi: 10.1007/s11709-010-0067-5

Abstract: Windborne debris is one of the most important causes of the envelop destruction according to the post-damageThe problem of windborne debris damage could be summarized as three parts, including windborne debrisBesides, the process of windborne debris damage analysis is described in detail.

Keywords： typhoon     windborne debris     structural envelopes     damage estimation    

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Corrosion damage assessment and monitoring of large steel space structures

Bo CHEN, You-Lin XU, Weilian QU,

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 3,   Pages 354-369 doi: 10.1007/s11709-010-0088-0

Abstract: This paper proposes a framework for assessing the corrosion damage of large steel space structures subjectedreal large steel space structure built in the southern coastal area in China to assess its corrosion damage

Keywords： large steel space structure     atmospheric corrosion     stress corrosion cracking     corrosion damage     damage assessment    

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Detection of damage locations and damage steps in pile foundations using acoustic emissions with deep

Alipujiang JIERULA, Tae-Min OH, Shuhong WANG, Joon-Hyun LEE, Hyunwoo KIM, Jong-Won LEE

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 2,   Pages 318-332 doi: 10.1007/s11709-021-0715-y

Abstract: The aim of this study is to propose a new detection method for determining the damage locations in pileFirst, the damage location is simulated using a back propagation neural network deep learning model withIn particular, the damage location is identified using two parameters: the pile location ( ) and theSecond, the damage step condition is determined using a classification model with an acoustic emissionFinally, a new damage detection and evaluation method for pile foundations is proposed.

Keywords： pile foundations     damage location     acoustic emission     deep learning     damage step    

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Title Author Date Type Operation

Nonlinear dynamic behavior of rotating blade with breathing crack

Laihao YANG, Zhu MAO, Shuming WU, Xuefeng CHEN, Ruqiang YAN

Journal Article

Nonlinear cumulative damage model for multiaxial fatigue

SHANG De-guang, SUN Guo-qin, DENG Jing, YAN Chu-liang

Journal Article

The Review of Ascertainable Fatigue Cumulative Damage Rule

Yang Xiaohua,Yao Weixing,Duan Chengmei

Journal Article

Regional seismic-damage prediction of buildings under mainshock–aftershock sequence

Xinzheng LU, Qingle CHENG, Zhen XU, Chen XIONG

Journal Article

Midline2 is overexpressed and a prognostic indicator in human breast cancer and promotes breast cancer

Journal Article

Screening of indicator pharmaceuticals and personal care products in landfill leachates: a case study

Journal Article

Investigating the role of exiting vehicles and turn indicator usage in gap acceptance at single-lane

Nathan P. BELZ

Journal Article

Modeling effects of a tidal barrage on water quality indicator distribution in the Severn Estuary

Guanghai GAO, Roger A. FALCONER, Binliang LIN

Journal Article

Water environment security indicator system for urban water management

Tian HAO, Pengfei DU, Yun GAO

Journal Article

China’s Agriculture Green Development: from Concept to Actions

Journal Article

Nonlinear numerical simulation of punching shear behavior of reinforced concrete flat slabs with shear-heads

Dan V. BOMPA, Ahmed Y. ELGHAZOULI

Journal Article

Midline2 is overexpressed and a prognostic indicator in human breast cancer and promotes breast cancer

Lan Wang,Jueheng Wu,Jie Yuan,Xun Zhu,Hongmei Wu,Mengfeng Li

Journal Article

Windborne debris damage prediction analysis

Fangfang SONG, Jinping OU,

Journal Article

Corrosion damage assessment and monitoring of large steel space structures

Bo CHEN, You-Lin XU, Weilian QU,

Journal Article

Detection of damage locations and damage steps in pile foundations using acoustic emissions with deep

Alipujiang JIERULA, Tae-Min OH, Shuhong WANG, Joon-Hyun LEE, Hyunwoo KIM, Jong-Won LEE

Journal Article