Monitoring viscosity in asphalt binders using an ultrasonic guided wave approach

机译：使用超声波导波方法监测沥青粘合剂的粘度

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A pulse-echo ultrasonic guided wave approach capable of monitoring the viscosity of asphalt binders as function of temperature is presented. The method consists of sending a torsional wave from one end of a cylindrical steel rod embedded in asphalt binder and receiving the reflected signals. Experiments were performed on several binders of different performance grades, at temperatures ranging from 25 to 180 °C. First, the viscosity of the binders was measured using a rotational viscometer in accordance with ASTM standards. The change in signal strength of the end-of-waveguide reflection of the guided wave was also monitored for the same binders over the same range of temperatures. It was observed that the values obtained using the guided wave approach correlates well with the viscosity values obtained using the rotational viscometer. The method also appears capable of monitoring changes in viscosity due to aging of the binders. The method has the advantage of having no moving parts, which makes it attractive for the development of a system that is capable of monitoring viscosity in asphalt binders in the asphalt industry. Industrial applications examples are briefly summarized.

机译：提出了一种脉冲回波超声导波方法，该方法能够监测沥青粘合剂的粘度随温度的变化。该方法包括从嵌入沥青粘结剂中的圆柱形钢棒的一端发送扭转波，并接收反射信号。在25至180°C的温度范围内，对几种不同性能等级的粘合剂进行了实验。首先，根据ASTM标准使用旋转粘度计测量粘合剂的粘度。在相同的温度范围内，对于相同的粘合剂，也要监测导波的波导管末端反射的信号强度变化。观察到，使用导波方法获得的值与使用旋转粘度计获得的粘度值具有很好的相关性。该方法似乎还能够监测由于粘合剂老化引起的粘度变化。该方法具有不具有运动部件的优点，这使其对于能够监测沥青工业中的沥青粘合剂中的粘度的系统的开发具有吸引力。简要总结了工业应用示例。

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《Conference on health monitoring of structural and biological systems》|2015年|943816.1-943816.14|共14页
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Alexandra N. Haser; Megan E. McGovern; Behzad Behnia; William Buttlar; Henrique Reis;
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Ultrasonics; waveguides; guided waves; pulse-echo; asphalt binder; viscosity; asphalt concrete;

机译：超声波;波导导波脉冲回波沥青粘合剂粘度沥青混凝土;

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1. Monitoring viscosity in asphalt binders using an ultrasonic guided wave approach [J] . A N Haser, M E McGovern, B Behnia, Insight . 2015,第4期

机译：使用超声波导波方法监控沥青粘合剂的粘度
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4. Monitoring viscosity in asphalt binders using an ultrasonic guided wave approach [C] . Alexandra N. Haser, Megan E. McGovern, Behzad Behnia, Conference on health monitoring of structural and biological systems . 2015

机译：使用超声波引导波方法监测沥青粘合剂中的粘度
5. A Bayesian experimental design approach to structural health monitoring with application to ultrasonic guided waves. [D] . Flynn, Eric Brian. 2010

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Monitoring viscosity in asphalt binders using an ultrasonic guided wave approach

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