Detection on debonding damage of fiber reinforced polymer composite strengthened concrete structure based on laser ultrasonic second harmonic generation technology

被引：0
|
作者：
Xu Y. [1 ]
Zheng Q. [1 ]
Wang S. [1 ]
机构：
[1] Shenzhen Key Lab of Urban & Civil Engineering Disaster Prevention & Reduction, Harbin Institute of Technology (Shenzhen), Shenzhen
来源：
Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | 2021年 / 38卷 / 01期
关键词：
Debonding damage; Fiber reinforced polymer (FRP) composite strengthened concrete structure; Finite element analysis; Laser ultrasonic; Second harmonic wave;
D O I：
10.13801/j.cnki.fhclxb.20200518.001
中图分类号：
学科分类号：
摘要：
The early debonding damage of fiber reinforced polymer (FRP) composite strengthened concrete structure tends to be closed state, which can not be detected and located by traditional linear ultrasonic technology. Based on the continuous laser excited narrow-band ultrasonic technology combined with the nonlinear ultrasonic second harmonic method, a method of detecting the debonding damage of FRP composite strengthened concrete was proposed. This method uses intensity modulated laser technology to excite narrow-band ultrasonic surface wave on the surface of the reinforced structure. Under the ultrasonic disturbance, according to the contact nonlinear theory of the spring model, the debonding damage in the structure is in the boundary. The opening and closing effect will be produced on the surface, and the location of peel damage will be detected by acoustic nonlinear second harmonic response. Based on the results of simulation and experiment, the feasibility of this method for early debonding damage detection of FRP composite strengthened concrete structure was verified, and the non-contact and high sensitivity damage detection of FRP composite strengthened concrete structure was realized. Copyright ©2021 Acta Materiae Compositae Sinica. All rights reserved.
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页码：255 / 267
页数：12
相关论文
共 25 条
  • [1] ANTONOPOULOS C P, TRIANTAFILLOU T C., Experimental investigation of FRP-strengthened RC beam-column joints, Journal of Composites for Construction, 7, 1, pp. 39-49, (2003)
  • [2] EL-GHANDOUR A., Experimental and analytical investigation of CFRP flexural and shear strengthening efficiencies of RC beams, Construction & Building Materials, 25, 3, pp. 1419-1429, (2011)
  • [3] KELLER T., Recent all-composite and hybrid fibre-reinforced polymer bridges and buildings, Progress in Structural Engineering and Materials, 3, 2, pp. 132-140, (2001)
  • [4] LI Bingqi, ZHOU Yuexia, Research process of the concrete structure strengthened with fiber composite polymer, Journal of Water Resources and Architectural Engineering, 14, 1, pp. 85-90, (2016)
  • [5] SMITH S T, TENG J G., FRP-strengthened RC beams Ⅰ: Review of debonding strength models, Engineering Structures, 24, 4, pp. 385-395, (2002)
  • [6] MUKHOPADHYAYA P, SWAMY N., Interface shear stress: A new design criterion for plate debonding, Journal of Composites for Construction, 5, 1, pp. 35-43, (2001)
  • [7] SEBASTIAN W M., Significance of midspan debonding failure in FRP-plated concrete beams, Journal of Structural Engineering, 127, 7, pp. 792-798, (2001)
  • [8] CHEN G M, CHEN J F, TENG J G., Behaviour of FRP-to-concrete interfaces between two adjacent cracks: A numerical investigation on the effect of bondline damage, Construction and Building Materials, 28, 1, pp. 584-591, (2012)
  • [9] TENG J G, SMITH S T, YAO J, Et al., Intermediate crack-induced debonding in RC beams and slabs, Construction and Building Materials, 17, 6-7, pp. 447-462, (2003)
  • [10] BUYUKOZTURK O, GUNES O, KARACA E., Progress on understanding debonding problems in reinforced concrete and steel members strengthened using FRP composites, Construction and Building Materials, 18, 1, pp. 9-19, (2004)
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