Volume 32, Issue 6 (November 2004)

    Piezoelectric Sensors for Weigh-In-Motion Systems: An Experimental Insight into Edge Effects

    (Received 22 September 2003; accepted 3 June 2004)

    Published Online: 2004

    CODEN: JTEOAD

      Format Pages Price  
    PDF 8 $25   ADD TO CART


    Abstract

    Experimental campaigns conducted on the theme of weigh-in-motion exhibited an unexpected scattering of the weight measurements. In spite of several attempts, no argument was found to satisfactorily explain the dispersal, in particular for the sites implementing piezoelectric sensors. After tackling this problem numerically in a previous study, the present investigation aims at understanding experimentally the behavior of such systems within the material in which they are embedded in the road. A field campaign utilizing an instrumented truck confirmed a loss of sensitivity at the ends of the sensor. This result was also corroborated by laboratory testing on a servohydraulic jack. It is shown that the location of a load over the sensor affects its response, and that only a small part of the traffic lane is saved from edge effects. The major mission of this work is to make users of weigh-in-motion systems based upon piezoelectric sensors aware of this phenomenon so that they can take actions to recognize and compensate for the potential measurement errors associated with using this type of sensor.


    Author Information:

    Iaquinta, J
    Paris Cedex 15,

    Merliot, E
    Paris Cedex 15,

    Cottineau, L-M
    Bouguenais Cedex,

    Desroche, J-P
    Bouguenais Cedex,


    Stock #: JTE12207

    ISSN: 0090-3973

    DOI: 10.1520/JTE12207

    ASTM International is a member of CrossRef.

    Author
    Title Piezoelectric Sensors for Weigh-In-Motion Systems: An Experimental Insight into Edge Effects
    Symposium , 0000-00-00
    Committee D04