在FRP增强混凝土元素中检测损坏
Pranit Malla1, Seyed Saman Khedmatgozar Dolati1, Jesus D Ortiz2
1Department of Civil and Environmental Engineering, Florida International University, Miami, FL 33174, USA.
Materials (Basel, Switzerland)
|March 13, 2024
概括
地面透雷达 (GPR) 和分相阵列超声波 (PAU) 方法在纤维增强聚合物 (FRP) 增强混凝土 (FRP-RC) 中检测损坏方面表现有希望. GPR有效地识别了玻璃FRP和碳FRP的损伤,而PAU仅限于碳FRP损伤检测.
科学领域:
- 土木工程 土木工程是指土木工程.
- 材料科学 材料科学 材料科学
- 结构健康监测 结构健康监测
背景情况:
- 与混凝土结构中的钢相比,纤维增强聚合物 (FRP) 复合材料具有优越的性能,如耐腐蚀性和耐久性.
- 对FRP增强混凝土 (FRP-RC) 的非破坏性测试 (NDT) 方法的研究有限,由于评估挑战,阻碍了广泛采用.
研究的目的:
- 评估地面透雷达 (GPR) 和分相阵列超声波 (PAU) 在FRP-RC元件中检测损坏的适用性.
- 确定GPR和PAU的检测能力和局限性,用于各种FRP类型和缺陷场景.
主要方法:
- 研究了三块玻璃FRP (GFRP),碳FRP (CFRP) 和玄武岩FRP (BFRP) 增强的板样.
- 多样化的条形直径,深度和引入的缺陷类型来评估NDT方法的性能.
- 通过GPR和PAU技术比较损坏检测结果.
主要成果:
- GPR成功检测到GFRP条和CFRP线程中的损伤.
- PAU表现出局限性,只能有效地检测到CFRP线条的损伤.
- 这两种方法都显示出潜力,但也突出了FRP-RC评估的具体局限性.
结论:
- 像GPR和PAU这样的传统的NDT方法可以应用于FRP-RC结构以检测损坏.
- 需要进一步的研究来完善NDT技术,以便在FRP-RC中获得更广泛的适用性和可靠性.
- 该研究提供了对FRP-RC的NDT当前能力和未来研究方向的见解.
关键词:
使用FRP增强混凝土 (FRP-RC) 的混凝土.用纤维增强的聚合物 (FRP)通过地面穿透雷达 (GPR) 进行测试.非破坏性测试 (NDT) 是指非破坏性测试.阶段阵列超声波 (PAU) 超声波超声波测试 (UT) 是指超声波测试.更多相关视频
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