A new approach for damage detection in asphalt concrete pavements using battery-free wireless sensors with non-constant injection rates
A new approach for damage detection in asphalt concrete pavements using battery-free wireless sensors with non-constant injection rates
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DOI：
10.1016/j.measurement.2017.06.035
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发表时间：
2017-11-01
期刊：
影响因子：
5.6
通讯作者：
Chakrabartty, Shantanu
中科院分区：
文献类型：
--
作者：
Hasni, Hassene;Alavi, Amir H.;Chakrabartty, Shantanu
提出了一种基于非恒定注浆速率的自供电无线传感器检测沥青混凝土路面自下而上裂缝的新方法。通过对沥青混凝土三点弯曲试件的数值模拟和实验研究，对传感器的性能进行了评价。损伤是通过在试件底部制作不同大小的凹槽来引入的。利用ABAQUS建立了不同的三维有限元模型，以生成不同损伤状态下的传感器输出数据。随后，对同一试件进行了实验室测试，以验证所提出的损伤检测方法的性能。利用聚偏氟乙烯(PVDF)压电薄膜从主体结构中获取应变能，并为传感器提供能量。为了保护嵌入式传感器，设计了一种H形封装系统并进行了测试。实验结果表明，该自供电传感系统能够准确检测自下而上的裂纹扩展。(C)2017爱思唯尔有限公司。保留所有权利。
This study presents a novel approach for detection of bottom-up cracking in asphalt concrete (AC) pavements using self-powered wireless sensor (SWS) with non-constant injection rates. The performance of the sensors was evaluated through numerical and experimental studies on an asphalt concrete specimen under three-point bending configuration. Damage was introduced by making notches with different sizes at the bottom of the specimen. Different 3D finite element (FE) models were developed using ABAQUS to generate the sensor output data for different damage states. Thereafter, the laboratory tests were carried on the same specimen to validate the performance of the proposed damage detection approach. Polyvinylidene fluoride (PVDF) piezoelectric film was used to harvest the strain energy from the host structure and empower the sensor. In order to protect the embedded sensor, an H-shape packaging system was designed and tested. The results indicate that the progression of bottom-up cracks can be accurately detected using the proposed-self-powered sensing system. (c) 2017 Elsevier Ltd. All rights reserved.