Inelastic deformations of stainless steel leaf springs-experiment and nonlinear analysis

Rahman, M. A.; Kowser, Md. Arefin

doi:10.1007/s11012-009-9270-7

Cited by 11 publications

(2 citation statements)

References 13 publications

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“…As for the large deformation theory of the beams, many studies have started to investigate and have made some achievements [ 28 , 29 , 30 ]. However, due to the non-linearity of the mathematical model [ 31 , 32 ], it is difficult to apply the method to practical engineering, with complicated calculations and low efficiency. To complete the metrological traceability of strain sensors under complex conditions, the strain calibration model and the deflection measurement position of the equal strength beams are indispensable to improve the accuracy of the strain metrology calibration.…”

Section: Introductionmentioning

confidence: 99%

Calibration Model Optimization for Strain Metrology of Equal Strength Beams Using Deflection Measurements

Yan

Cui

et al. 2023

Sensors

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Strain sensors, especially fiber Bragg grating (FBG) sensors, are of great importance in structural health monitoring, mechanical property analysis, and so on. Their metrological accuracy is typically evaluated by equal strength beams. The traditional strain calibration model using the equal strength beams was built based on an approximation method by small deformation theory. However, its measurement accuracy would be decreased while the beams are under the large deformation condition or under high temperature environments. For this reason, an optimized strain calibration model is developed for equal strength beams based on the deflection method. By combining the structural parameters of a specific equal strength beam and finite element analysis method, a correction coefficient is introduced into the traditional model, and an accurate application-oriented optimization formula is obtained for specific projects. The determination method of optimal deflection measurement position is also presented to further improve the strain calibration accuracy by error analysis of the deflection measurement system. Strain calibration experiments of the equal strength beam were carried out, and the error introduced by the calibration device can be reduced from 10 με to less than 1 με. Experimental results show that the optimized strain calibration model and the optimum deflection measurement position can be employed successfully under large deformation conditions, and the deformation measurement accuracy is improved greatly. This study is helpful to effectively establish metrological traceability for strain sensors and furthermore improve the measurement accuracy of strain sensors in practical engineering scenarious.

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Section: Introductionmentioning

confidence: 99%

Calibration Model Optimization for Strain Metrology of Equal Strength Beams Using Deflection Measurements

Yan

Cui

et al. 2023

Sensors

View full text Add to dashboard Cite

show abstract

“…The construction of industrial plants, national landmarks (Olympic Stadium), the symbol of the city building, residential building floor, large ships berthing port construction, with world-class large bridge state nuclear power construction, the wind turbine installation, construction of cooling tower thermal power plants and large water construction and hydraulic power unit lifting equipment and so on, these construction are used in the jib tower crane jib tower crane, and also play an irreplaceable role, compared to other lifting equipment, because of its rapid installation and low cost and be the most respected tower construction units, after installation can be long-term use, especially long-term projects, such as residential buildings, large chain construction, port construction and the construction of sports venues and so on, can save a large rental expenses, compared with inconvenient installation crawler cranes, truck crane is expensive, more expensive car han ging all terrain crane, tower crane cost to make the most of construction units are satisfied, especially some of the projects, other lifting devices are not appropriate [2].…”

Section: Introductionmentioning

confidence: 99%