Research on application of standard strain sensing strip based on carbonaceous materials
Aiming at the problem that in traditional process of resistance strain measurement,resistance strain gauges can only adapt to the point measurement of local strain,cannot perform global measurement,and the pasting techniques is complex,propose using inexpensive carbonaceous materials,utilizing improved gravure printing technology to prepare standard-length sensing strips.By adopting the method of cutting and splicing,the arbitrary adjustment of the test area of the sensing strip is achieved.The basic principle of strain testing based on resistance change rate of the sensing strip is introduced.The performance indicators of the standard sensing strip are evaluated through static load experiments on cantilever beams with equal cross-sections.The global measurement effect of the standard strain sensing strip for small strains in concrete beams is evaluated through reinforced concrete flexural beam experiments.Experimental results show that the standard strain sensing strip has the characteristics of simple preparation method,diverse combination methods,good small-strain response tracking,and suitability for outdoor on-site measurements.It can be widely used in the field of health monitoring of concrete structures.
graphene carbon inkstrain sensing stripperformance testingapplication research
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