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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: Blade strain distribution and its change with time are crucial for reliability analysis and residualTraditional strain measurements are achieved by strain gauges (SGs) in a contact manner at discrete positionsThis 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.

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

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The New Development of Heavy Force Measurement Technique —Adhesion and Super-miniature Type of Heavy Force Sensors

Shen Jiuheng

Strategic Study of CAE 2001, Volume 3, Issue 10, Pages 22-27

Abstract:

Heavy force sensor is a kind of high-technology electric information device for heavy equipment. In this paper the purpose, properties and development of heavy force measurement for heavy equipment are described .The physical model of heavy force division measurement mode is discussed. The super-miniature adhesion type of heavy force sensor invented by the auther and its engineering application are introduced.

Keywords： heavy equipment heavy force sensor supporting type adhesion type resistance strain gauge division measurement

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Development of realistic design fire time-temperature curves for the testing of cold-formed steel wall systems

Anthony Deloge ARIYANAYAGAM,Mahen MAHENDRAN

Frontiers of Structural and Civil Engineering 2014, Volume 8, Issue 4, Pages 427-447 doi: 10.1007/s11709-014-0279-1

Abstract: Fire resistance rating of light gauge steel frame (LSF) wall systems is obtained from fire tests based

Keywords： fire safety standard fire curve realistic design fire time-temperature curves light gauge steel frame(LSF) walls fire resistance rating fuel load

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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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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-strain

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: Through comparing the measured data of dynamic strains due to loading and temperature by the stain gaugeand temperature sensor at the same location, the information in the strain data was divided into threeAs 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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Aerobic granulation of pure bacterial strain

ADAV Sunil S., LEE Duu-Jong

Frontiers of Environmental Science & Engineering 2008, Volume 2, Issue 4, Pages 461-467 doi: 10.1007/s11783-008-0066-0

Abstract: The objective of this study is to cultivate aerobic granules by pure bacterial strain, , in a sequencing

Keywords： following excellent settling phenol/ sequencing microscopic

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Prevalence of antifolate drug resistance markers in in China

Frontiers of Medicine 2022, Volume 16, Issue 1, Pages 83-92 doi: 10.1007/s11684-021-0894-x

Abstract: dhfr) and dihydropteroate synthetase (dhps) genes of Plasmodium vivax and antifolate resistance-associatedgenes were used for drug resistance surveillance.This study indicated that the antifolate resistance levels of P. vivax parasites were differentacross China and molecular markers could be used to rapidly monitor drug resistance.

Keywords： drug resistance antifolates molecular markers Plasmodium vivax China