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

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 nonbaseline

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

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Influence of envelope insulation materials on building energy consumption

Junlan YANG, Jiabao TANG

Frontiers in Energy 2017, Volume 11, Issue 4,   Pages 575-581 doi: 10.1007/s11708-017-0473-7

Abstract: the three insulation materials show a verse order at a certain heat transfer coefficient of the base envelopeThe EPTS is 10, 19 and 21 years, respectively when the heat transfer coefficient of the base envelope

Keywords： building envelope     insulation materials     energy consumption     payback time    

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Applying Rational Envelope curves for skinning purposes

Kinga Kruppa,kruppa.kinga@inf.unideb.hu

Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 2,   Pages 141-286 doi: 10.1631/FITEE.1900377

Abstract: Special curves in the Minkowski space such as Minkowski Pythagorean hodograph curves play an important role in computer-aided geometric design, and their usages are thoroughly studied in recent years. Bizzarri et al. (2016) introduced the class of Rational (RE) curves, and an method for Hermite data was presented, where the resulting RE curve yielded a rational boundary for the represented domain. We now propose a new application area for RE curves: of a discrete set of input s. We show that if we do not choose the Hermite data correctly for , then the resulting RE curves are not suitable for . We introduce a novel approach so that the obtained curves touch each at previously defined points of contact. Thus, we overcome those problematic scenarios in which the location of touching points would not be appropriate for purposes. A significant advantage of our proposed method lies in the efficiency of trimming offsets of boundaries, which is highly beneficial in computer numerical control machining.

Keywords： Medial axis transform     Envelope     Interpolation     Skinning     Circle    

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A rate-dependent Prandtl-Ishlinskii model for piezoelectric actuators using the dynamic envelope function

Meiju YANG,Chunxia LI,Guoying GU,Limin ZHU

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 1,   Pages 37-42 doi: 10.1007/s11465-015-0326-1

Abstract: The new model is based on a modified rate-dependent play operator, in which a dynamic envelope function

Keywords： piezoelectric actuators     hysteresis     Prandtl-Ishlinskii     rate-dependent    

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An ANN-exhaustive-listing method for optimization of multiple building shapes and envelope properties

Yaolin LIN, Wei YANG

Frontiers in Energy 2021, Volume 15, Issue 2,   Pages 550-563 doi: 10.1007/s11708-019-0607-1

Abstract: innovative ANN (artificial neural network)-exhaustive-listing method to optimize the building shapes and envelope

Keywords： ANN (artificial neural network)     exhaustive-listing     building shape     optimization     thermal load     thermal comfort    

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Development of surface reconstruction algorithms for optical interferometric measurement

Dongxu WU, Fengzhou FANG

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 1,   Pages 1-31 doi: 10.1007/s11465-020-0602-6

Abstract: Optical interferometry is a powerful tool for measuring and characterizing areal surface topography in precision manufacturing. A variety of instruments based on optical interferometry have been developed to meet the measurement needs in various applications, but the existing techniques are simply not enough to meet the ever-increasing requirements in terms of accuracy, speed, robustness, and dynamic range, especially in on-line or on-machine conditions. This paper provides an in-depth perspective of surface topography reconstruction for optical interferometric measurements. Principles, configurations, and applications of typical optical interferometers with different capabilities and limitations are presented. Theoretical background and recent advances of fringe analysis algorithms, including coherence peak sensing and phase-shifting algorithm, are summarized. The new developments in measurement accuracy and repeatability, noise resistance, self-calibration ability, and computational efficiency are discussed. This paper also presents the new challenges that optical interferometry techniques are facing in surface topography measurement. To address these challenges, advanced techniques in image stitching, on-machine measurement, intelligent sampling, parallel computing, and deep learning are explored to improve the functional performance of optical interferometry in future manufacturing metrology.

Keywords： surface topography     measurement     optical interferometry     coherence envelope     phase-shifting algorithm    

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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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Multiple regression models for energy consumption of office buildings in different climates in China

Siyu ZHOU, Neng ZHU

Frontiers in Energy 2013, Volume 7, Issue 1,   Pages 103-110 doi: 10.1007/s11708-012-0220-z

Abstract: Obviously, there are significant relationships between building envelope and the energy consumption ofThe 8 key building envelope influencing factors were found in this paper to evaluate their effects onAccording to the analysis of regression coefficients, the appropriate building envelope design schemesto estimate the energy consumption of office buildings in different climates when various building envelope

Keywords： regression model     energy consumption     building envelope     office building     different climates    

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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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Title Author Date Type Operation

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

He Yuting

Journal Article

Influence of envelope insulation materials on building energy consumption

Junlan YANG, Jiabao TANG

Journal Article

Applying Rational Envelope curves for skinning purposes

Kinga Kruppa,kruppa.kinga@inf.unideb.hu

Journal Article

A rate-dependent Prandtl-Ishlinskii model for piezoelectric actuators using the dynamic envelope function

Meiju YANG,Chunxia LI,Guoying GU,Limin ZHU

Journal Article

An ANN-exhaustive-listing method for optimization of multiple building shapes and envelope properties

Yaolin LIN, Wei YANG

Journal Article

Development of surface reconstruction algorithms for optical interferometric measurement

Dongxu WU, Fengzhou FANG

Journal Article

Whole-life Thinking and Engineering the Future

Roger Flanagan

Journal Article

Multiple regression models for energy consumption of office buildings in different climates in China

Siyu ZHOU, Neng ZHU

Journal Article

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

Bin Lu, Xiaolong Song, Jianxin Yang, Dong Yang

Journal Article

Bayes estimation of residual life by fusing multisource information

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

Journal Article

A comparison of production system life cycle models

Rajesh ATTRI, Sandeep GROVER

Journal Article

General framework for bridge life cycle design

Junhai MA, Airong CHEN, Jun HE

Journal Article

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

Journal Article

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

Journal Article

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

Journal Article