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Full-field dynamic strain reconstruction of an aero-engine blade from limited displacement responses

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 1, doi: 10.1007/s11465-022-0731-1

Abstract: This study proposes a method of full-field and real-time strain reconstruction of an aero-engine bladeLimited optical measured displacement responses are utilized to reconstruct the full-field strain.The full-field strain distribution is in-time visualized.vibrational displacement responses measured by laser triangulation sensors are used to reconstruct the full-fieldThis paper provides a low-cost, real-time, and visualized measurement of blade full-field dynamic strain

Keywords： aero-engine blade     displacement response     dynamic strain reconstruction     mode shape     strain gauge    

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Experimental monitoring of the strengthening construction of a segmental box girder bridge and field

Ali Fadhil NASER, Zonglin WANG

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 3,   Pages 308-320 doi: 10.1007/s11709-012-0140-3

Abstract: construction process of the external prestressing tendons to strengthen the bridge structure and perform a fieldload test to measure the strain and the deflection of the anchorage devices of the external prestressingA field load test is performed to the anchorage beam, the steel deviation block devices, and the steelThe field load test results of the anchorage devices show that the values of the strains, the stresses

Keywords： prestressed concrete     box girder     monitoring     external tendons     strain     deflection    

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Compressive behavior and microstructure of concrete mixed with natural seawater and sea sand

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 6,   Pages 1347-1357 doi: 10.1007/s11709-021-0780-2

Abstract: Noncorrosive reinforcement materials facilitate producing structural concrete with seawater and sea sand. This study investigated the properties of seawater and sea sand concrete (SSC), considering the curing age (3, 7, 14, 21, 28, 60, and 150 d) and strength grade (C30, C40, and C60). The compressive behavior of SSC was obtained by compressive tests and digital image correction (DIC) technique. Scanning electron microscope (SEM) and X-ray powder diffraction (XRD) methods were applied to understand the microstructure and hydration products of cement in SSC. Results revealed a 30% decrease in compressive strength for C30 and C40 SSC from 60 to 150 d, and a less than 5% decrease for C60 from 28 to 150 d. DIC results revealed significant cracking and crushing from 80% to 100% of compressive strength. SEM images showed a more compact microstructure in higher strength SSC. XRD patterns identified Friedel’s salt phase due to the chlorides brought by seawater and sea sand. The findings in this study can provide more insights into the microstructure of SSC along with its short- and long-term compressive behavior.

Keywords： seawater and sea sand concrete     compressive strength     strain field     microstructure     hydration products    

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Study on rapid 3D full-field deformation&strain measurement and inspection for mechanical engineering

Liang Jin,Guo Xiang,Hu Hao,Li Leigang,Tang Zhengzong,Shi Baoquan,Sun Tao

Strategic Study of CAE 2013, Volume 15, Issue 1,   Pages 51-56

Abstract: shipping, military industry and so on, the rapid and feasible 3D profile, deformation and strainsequence are taken by many kinds of industrial cameras, and the 3D coordinates, deformation and strain

Keywords： industrial close range photogrammetry     digital image correlation     deformation     strain    

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Concepts and implementation of strain-based criteria in design codes for steel structures

Reidar BJORHOVDE

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 3,   Pages 210-216 doi: 10.1007/s11709-012-0165-7

Abstract: If stresses or forces are needed, these are easily determined by the value of the strain and the relevant

Keywords： steel     stress-strain characteristics     tension test     strain design     actual behavior     improved design codes    

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Corrugated steel pipe culvert applying in highway and strain measuring with fiber grating test technology

Cheng Gang,Fang Ping

Strategic Study of CAE 2013, Volume 15, Issue 8,   Pages 108-112

Abstract: From testing the strain conditions of corrugated steel pipe culvert under different soil fill heights

Keywords： corrugated steel pipe culvert     highway     soft foundation     field test     fiber test    

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Strain and process engineering toward continuous industrial fermentation

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10,   Pages 1336-1353 doi: 10.1007/s11705-022-2284-6

Abstract: Most current biotechnology industries are based on batch or fed-batch fermentation processes, which often show low productivity and high production costs compared to chemical processes. To increase the economic competitiveness of biological processes, continuous fermentation technologies are being developed that offer significant advantages in comparison with batch/fed-batch fermentation processes, including: (1) removal of potential substrates and product inhibition, (2) prolonging the microbial exponential growth phase and enhancing productivity, and (3) avoiding repeated fermentation preparation and lowering operation and installation costs. However, several key challenges should be addressed for the industrial application of continuous fermentation processes, including (1) contamination of the fermentation system, (2) degeneration of strains, and (3) relatively low product titer. In this study, we reviewed and discussed metabolic engineering and synthetic biology strategies to address these issues.

Keywords： continuous fermentation     productivity     contamination     strain degeneration     metabolic engineering    

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Behavior of steel fiber–reinforced high-strength concrete at medium strain rate

Chujie JIAO, Wei SUN, Shi HUAN, Guoping JIANG

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 2,   Pages 131-136 doi: 10.1007/s11709-009-0027-0

Abstract: Impact compression experiments for the steel fiber–reinforced high-strength concrete (SFRHSC) at medium strainThe experimental results showed that, when the strain rate increased from threshold value to 90 s , theincreased about 30%, the elastic modulus of SFRHSC increased about 50%, and the increase in the peak strain

Keywords： steel fiber–reinforced high-strength concrete (SFRHSC)     high strain rates     split Hopkinson press bar (SHPB)     strain rate hardening effects    

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Vibration analysis of nano-structure multilayered graphene sheets using modified strain gradient theory

Amir ALLAHBAKHSHI,Masih ALLAHBAKHSHI

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 2,   Pages 187-197 doi: 10.1007/s11465-015-0339-9

Abstract:

In this paper, for the first time, the modified strain gradient theory is used as a new size-dependentAfter obtaining the governing equations based on modified strain gradient theory via principle of minimum

Keywords： graphene     van der Waals (vdW) force     modi- fied strain gradient elasticity theory     size effect parameter    

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FEM-based strain analysis study for multilayer sheet forming process

Rongjing ZHANG,Lihui LANG,Rizwan ZAFAR

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 4,   Pages 373-379 doi: 10.1007/s11465-015-0371-9

Abstract: To further explore the novel method, this study conducts a finite element method-based (FEM-based) strain

Keywords： finite element method (FEM)     strain analysis     multilayer sheet forming    

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Stress-strain relationship of concrete in freeze-thaw environment

ZOU Chaoying, ZHAO Juan, LIANG Feng

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 2,   Pages 184-188 doi: 10.1007/s11709-008-0029-3

Abstract: Afterwards these frozen-thawed specimens were tested on monotonic axial load; stress-strain testing curvesFinally, stress-strain theoretical curvilinear equations and correlated parameters relating to the loss

Keywords： stress-strain theoretical     freeze-thaw     capacity     reference     eighteen concrete    

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Fictitious soil pile model for dynamic analysis of pipe piles under high-strain conditions

Frontiers of Structural and Civil Engineering   Pages 915-934 doi: 10.1007/s11709-023-0907-8

Abstract: pile (FSP) model is developed to simulate the behavior of pipe piles with soil plugs undergoing high-strainof the proposed model and conventional numerical models, as well as measurements for pipe piles in field

Keywords： fictitious soil pile     soil plug     pipe piles     high-strain dynamic analysis     one-dimensional wave theory    

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Influence of freeze–thaw damage gradient on stress–strain relationship of stressed concrete

Frontiers of Structural and Civil Engineering   Pages 1326-1340 doi: 10.1007/s11709-023-0014-x

Abstract: Influence of freeze–thaw damage gradient on stress–strain relationship of stressed concrete

Keywords： strain relationship concrete    

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Separation and extraction of bridge dynamic strain data

Baijian WU, Zhaoxia LI, Ying WANG, T. H. T. CHAN,

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 4,   Pages 395-400 doi: 10.1007/s11709-009-0049-7

Abstract: temperature by the stain gauge and temperature sensor at the same location, the information in the strainAlso, a simple algorithm was developed to separate the three types of information and to extract the strainAs an application of the proposed method, the effect of strain deformation and noises on the fatigueThe strain due to temperature varying attributes a little to the errors of fatigue assessment; however/stress amplitude picked up by real structural stress or strain.

Keywords： dynamic     valuable     separatrix     strain/stress amplitude     frequency    

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Strengthening of the concrete face slabs of dams using sprayable strain-hardening fiber-reinforced cementitious

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 2,   Pages 145-160 doi: 10.1007/s11709-022-0806-4

Abstract: In this study, sprayable strain-hardening fiber-reinforced cementitious composites (FRCC) were appliedThe findings of this study indicate that the sprayable strain-hardening FRCC has a good potential for

Keywords： strain-hardening cementitious composites     engineered cementitious composites     sprayable     shotcrete     strengthening    

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Title Author Date Type Operation

Full-field dynamic strain reconstruction of an aero-engine blade from limited displacement responses

Journal Article

Experimental monitoring of the strengthening construction of a segmental box girder bridge and field

Ali Fadhil NASER, Zonglin WANG

Journal Article

Compressive behavior and microstructure of concrete mixed with natural seawater and sea sand

Journal Article

Study on rapid 3D full-field deformation&strain measurement and inspection for mechanical engineering

Liang Jin,Guo Xiang,Hu Hao,Li Leigang,Tang Zhengzong,Shi Baoquan,Sun Tao

Journal Article

Concepts and implementation of strain-based criteria in design codes for steel structures

Reidar BJORHOVDE

Journal Article

Corrugated steel pipe culvert applying in highway and strain measuring with fiber grating test technology

Cheng Gang,Fang Ping

Journal Article

Strain and process engineering toward continuous industrial fermentation

Journal Article

Behavior of steel fiber–reinforced high-strength concrete at medium strain rate

Chujie JIAO, Wei SUN, Shi HUAN, Guoping JIANG

Journal Article

Vibration analysis of nano-structure multilayered graphene sheets using modified strain gradient theory

Amir ALLAHBAKHSHI,Masih ALLAHBAKHSHI

Journal Article

FEM-based strain analysis study for multilayer sheet forming process

Rongjing ZHANG,Lihui LANG,Rizwan ZAFAR

Journal Article

Stress-strain relationship of concrete in freeze-thaw environment

ZOU Chaoying, ZHAO Juan, LIANG Feng

Journal Article

Fictitious soil pile model for dynamic analysis of pipe piles under high-strain conditions

Journal Article

Influence of freeze–thaw damage gradient on stress–strain relationship of stressed concrete

Journal Article

Separation and extraction of bridge dynamic strain data

Baijian WU, Zhaoxia LI, Ying WANG, T. H. T. CHAN,

Journal Article

Strengthening of the concrete face slabs of dams using sprayable strain-hardening fiber-reinforced cementitious

Journal Article