| 陈媛,韩庆邦,姜学平,贾静,范洪辉,殷澄,朱昌平.基于递归奇异熵方法的波纹管压浆超声检测[J].声学技术,2016,35(1):44~48 |
| 基于递归奇异熵方法的波纹管压浆超声检测 |
| Nondestructive test method based on singular entropy of recurrence matrix |
| 投稿时间：2015-03-28 修订日期：2015-06-19 |
| DOI：10.16300/j.cnki.1000-3630.2016.01.010 |
| 中文关键词: 递归图 奇异熵 无损检测 有限元仿真 |
| 英文关键词: recurrence plot singular entropy nondestructive test finite element |
| 基金项目:国家自然科学基金(11274091、11274092、61302124);河海大学中央高校基金项目(2011B11014) |
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| 中文摘要: |
| 为检测混凝土结构中波纹管内灌浆密实度,提出了一种基于递归奇异熵方法的波纹管压浆质量检测的方法.利用有限元软件进行理论模拟仿真,对结构响应信号采用多变量融合的方法,结合递归图分析法和奇异熵估计分析回波数据,结果表明,缺陷横向尺寸与递归奇异熵值具有单调对应关系,递归奇异熵方法可以用来判断压浆剥离尺寸.通过实际制作模型并测量,验证了该方法的可行性. |
| 英文摘要: |
| A nondestructive test method based on singular entropy of recurrence matrix is proposed to test defects in corrugated pipe of concrete structure. A model containing 4 different defects is constructed and simulated by using finite element method. Signals are recorded at different locations in the structure. The collected signals are then processed by multivariate recurrence matrix method with singular entropy estimation. It is found that the corresponding relation between the defect size and the entropy value is monotonous, and so this method can be used to distinguish the defect size. Several actual models are constructed and measured, and the results verify the feasibility of the proposed method. |
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