| 受火后混凝土表面损伤超声波检测算法 |
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| 引用本文： | 廖杰洪,余江滔,陆洲导. 受火后混凝土表面损伤超声波检测算法[J]. 无损检测, 2011, 0(3): 19-22,39 |
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| 作者姓名： | 廖杰洪 余江滔 陆洲导 |
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| 作者单位： | 同济大学土木工程学院结构工程与防灾研究所; |
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| 基金项目： | 土木工程防灾国家重点实验室基金资助项目(SLDRCE09-D-02) |
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| 摘 要： | 受火后混凝土损伤厚度的超声波检测中,通常简单地将混凝土假定为受损层和未受损层,以超声波检测数据(声时-测距的双折线模型)来理论计算混凝土的受损深度.这种方法简单、便捷,但在实际应用中误差较大.研究了基于混凝土受损趋势为双曲线模型的假定,以首波传播路径为抛物线的改进算法.借助ABAQUS有限元软件模拟了声波在受损混凝土中...
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| 关 键 词： | 混凝土 受火损伤 损伤深度 超声波 |
Ultrasonic Testing Algorithm to the Surface Damage of Fire-Damaged Concrete |
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| LIAO Jie-Hong,YU Jiang-Tao,LU Zhou-Dao. Ultrasonic Testing Algorithm to the Surface Damage of Fire-Damaged Concrete[J]. Nondestructive Testing, 2011, 0(3): 19-22,39 |
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| Authors: | LIAO Jie-Hong YU Jiang-Tao LU Zhou-Dao |
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| Affiliation: | LIAO Jie-Hong,YU Jiang-Tao,LU Zhou-Dao(Research Institute of Structural Engineering and Disaster Reduction,Tongji University,Shanghai 200092,China) |
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| Abstract: | Ultrasonic method is usually used to test the depth of fire-damaged concrete.It is assumed that the structural members could be simply classified into damaged layer and undamaged layer in the concrete and the damage depth can be calculated with a series of single-sided ultrasonic measured data.This method is simple and convenient but has a less precision in the practical application.A new improved algorithm was introduced in this paper.It is based on the assumption that the damage model was hyperbolic and t... |
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| Keywords: | Concrete Fire damage Damage depth Ultrasonic wave |
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