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Service Life Supervision for Individual Aircraft Structural System Based on Aircraft Structural Life

He Yuting

Strategic Study of CAE 2006, Volume 8, Issue 6, Pages 23-27

Abstract:

Based on the analysis of the aircraft structural life envelope (ASLE) under the baseline operationalconditions, an approach of establishment of aircraft structural life envelope (ASLE) under nonbaselineThe method of service life supervision for individual aircraft structural system(SLSFIASS) under nonbaselineTaking the supervision of the time between the first and second overhauls for an aircraft structural

Keywords： aircraft structure life envelope service life supervision time between overhauls

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Sustainable development oriented design theory ofengineering structures in whole life cycle

Jin Weiliang and Zhong Xiaoping

Strategic Study of CAE 2012, Volume 14, Issue 3, Pages 100-107

Abstract: justify;">In this study, a durability design theory system for engineering structures' whole life-cyclein the whole life time domain.The performance index, economic index and service life index are considered as key indexes in the wholeThe proposed new durability design theory system could be used in structural performance optimizationin whole life period and consequently results in the promotion of environment-friendly and resource

Keywords： sustainable development-oriented design theory structural whole life structural reliability structurallifecycle cost structural service life

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A Study on Methodology for Predicting the Damage to Structural Materials and Remaining Life of Process

Dai Shuhe

Strategic Study of CAE 1999, Volume 1, Issue 3, Pages 63-68

Abstract:

The universe of methodology for predicting the damage to structural materials and remaining life ofThe technique for predicting the damage to structural materials and remaining life of process equipment

In this study, a series of new techniques for predicting the damage to structural materialsand remaining life of porcess equipment have been developed, which are based on principles of approximate

Keywords： damage to structural materials life prediction process equipment

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Several issues to be considered for long-term better behavior of concrete gravity dams

Jinsheng JIA,

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 1, Pages 40-46 doi: 10.1007/s11709-010-0006-5

Abstract: The life span and the real safety status of old dams becomes a challenging task for the dam society,operated since 1943 and suffered uplift pressure, freeze and thaw problems, etc., discussions on the life

Keywords： dam safety economic life span structural life span environmental life span rehabilitation social decision

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Service Security of Underwater Tunnel Lining Structures and Corresponding Guarantee Countermeasures

He Chuan,Liu Sijin,Zhang Yuchun and Feng Kun

Strategic Study of CAE 2017, Volume 19, Issue 6, Pages 44-51 doi: 10.15302/J-SSCAE-2017.06.007

Abstract: Based on these analyses, countermeasures guaranteeing the long-life security of underwater tunnel structuresare being sought regarding tunnel construction, structural performance degradation, sudden natural disasterseffectively protect and ensure the service performance of the tunnel structures during their entire lifeThese security measures can ensure the safe performance of the structure during its entire life cycleThis research can serve as a reference for enhancing the structural security of underwater tunnels and

Keywords： underwater tunnels service security security guarantee countermeasures long life structural defects

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Whole-life Thinking and Engineering the Future

Roger Flanagan

Frontiers of Engineering Management 2014, Volume 1, Issue 3, Pages 290-296 doi: 10.15302/J-FEM-2014040

Abstract: Whole-life thinking for engineers working on the built environment has become more important in a fastWhole-life thinking is not new, every project attempts to balance the initial capital cost with the operatingSystems thinking provides one approach to developing a more robust whole-life approach.New approaches are needed to produce more reliable whole-life predictions.Best value, rather than lowest cost, can be achieved by using whole-life appraisal as a part of the design

Keywords： whole-life thinking systems thinking complexity chaos risk management through life

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Comparison on End-of-Life strategies of WEEE in China based on LCA

Bin Lu, Xiaolong Song, Jianxin Yang, Dong Yang

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 5, doi: 10.1007/s11783-017-0994-7

Abstract: It becomes an urgent issue to develop and adopt an effective End-of-Life (EoL) strategy for EEE in orderEoL strategies for EEE in China need to be evaluated in environment and resources aspects from the lifeLife Cycle Assessment (LCA) is applied to assess the environmental impacts of different EoL scenarios

Keywords： End-of-Life Waste electrical and electronic equipment Life cycle assessment Reuse

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Bayes estimation of residual life by fusing multisource information

Qian ZHAO, Xiang JIA, Zhi-jun CHENG, Bo GUO

Frontiers of Engineering Management 2018, Volume 5, Issue 4, Pages 524-532 doi: 10.15302/J-FEM-2018034

Abstract:

Residual life estimation is essential for reliability engineering.Traditional methods may experience difficulties in estimating the residual life of products with highreliability, long life, and small sample.In this study, a Bayes model is proposed to estimate the residual life of products by fusing expert knowledgeeffectiveness and practicability of the proposed method are validated by comparing it with residual life

Keywords： residual life estimation Bayes model linear Wiener process

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A comparison of production system life cycle models

Rajesh ATTRI, Sandeep GROVER

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 3, Pages 305-311 doi: 10.1007/s11465-012-0332-5

Abstract: Hence, analyzing different life cycle models of the production system is necessary.In this paper, different life cycle models of the production system are compared to evaluate the distinctiveFurthermore, the difference between product life cycle and production life cycle is summarized, and theeffect of product life cycle on production life cycle is explained.Finally, a production system life cycle model, along with key activities to be performed in each stage

Keywords： production system life cycle model product

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General framework for bridge life cycle design

Junhai MA, Airong CHEN, Jun HE

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 1, Pages 50-56 doi: 10.1007/s11709-009-0004-7

Abstract: Based on a detailed illustration for bridge life cycle design which comprises the processes of servicelife design, aesthetics design, performance design, environmental and ecological design, inspection,maintenance and repair design as well as cost analysis, this paper presented a general framework for bridge life

Keywords： bridge whole life design design phase design process general framework

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Chemically triggered life control of “smart” hydrogels through click and declick reactions

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 9, Pages 1399-1406 doi: 10.1007/s11705-022-2149-z

Abstract: The degradation of polymeric materials is recognized as one of the goals to be fulfilled for the sustainable economy. In this study, a novel methodology was presented to synthesize multiple highly cross-linked polymers (i.e., hydrogels) through amine–thiol scrambling under mild conditions. Amine-terminated poly(ethylene glycol) (PEG-NH₂) was reacted with the representative conjugate acceptors to synthesize hydrogels in organic and aqueous solutions, respectively. The materials above exhibited high water-swelling properties, distributed porous structures, as well as prominent mechanical strengths. It is noteworthy that the mentioned hydrogels could be degraded efficiently in hours to release the original coupling partner, which were induced by ethylene diamine at ambient temperature through amine-amine metathesis. The recovered PEG-NH₂ reagent could be employed again to regenerate hydrogels. Due to the multiple architectures and functions in polymeric synthesis, degradation and regeneration, a new generation of “smart” materials is revealed.

Keywords： hydrogels degradation synthesis regeneration

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State-of-the-art applications of machine learning in the life cycle of solid waste management

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 4, doi: 10.1007/s11783-023-1644-x

Abstract:

● State-of-the-art applications of machine learning (ML) in solid waste (SW) is presented.

Keywords： Machine learning (ML) Solid waste (SW) Bibliometrics SW management Energy utilization Life cycle

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Service life prediction of fly ash concrete using an artificial neural network

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 3, Pages 793-805 doi: 10.1007/s11709-021-0717-9

Abstract: Finally, a mathematical formula is proposed that can be used to successfully estimate the service life

Keywords： concrete fly ash carbonation neural networks experimental validation service life

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An updated review and conceptual model for optimizing WEEE management in China from a life cycle perspective

Xiaolong Song, Jingwei Wang, Jianxin Yang, Bin Lu

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 5, doi: 10.1007/s11783-017-0985-8

Abstract: subsidies, the gap in the supervision scope, the homogenization of recycling industry and the lack of lifeFinally, a conceptual framework for integrated management of WEEE is proposed from a life cycle perspectiveOverall, the life cycle management of WEEE includes three aspects: developing life cycle informationfor decision-making, implementing life cycle engineering with life cycle tools, and improving WEEE legislationbased on life cycle thinking.

Keywords： Waste electrical and electronic equipment E-waste Life cycle management China

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Approximation of structural damping and input excitation force

Mohammad SALAVATI

Frontiers of Structural and Civil Engineering 2017, Volume 11, Issue 2, Pages 244-254 doi: 10.1007/s11709-016-0371-9

Abstract: Structural dynamic characteristics are the most significant parameters that play a decisive role in structuralThe complexity of structural damping mechanisms has made this parameter to be one of the ongoing researchand nonlinear models which are described as the energy dissipation throughout viscous, material or structuralresponses plays an important role in structural identification process.In this paper model-based damping approximation method and a model-less structural input estimation are

Keywords： structural modal parameters damping identification method input excitation force identification Inverse