Assessment of Deflections in a Flexible Pavement Section Containing Embedded Dynamic Wireless Power Transfer (DWPT) Components


The embedment of dynamic wireless power transfer (DWPT) components into pavements for the dynamic and wireless powering of electric vehicles (EVs) has gained increasing research attention in recent years. However, the assessment of the mechanical behavior of the DWPT-integrated pavement structure requires more in-depth investigation. To this end, a DWPT system was installed in a flexible pavement test section in an Accelerated Pavement Testing (APT) facility to empirically evaluate the mechanical responses of the DWPT-pavement structure. The DWPT components were placed on a concrete slab, the entirety referred to as the charging unit (CU). This study evaluates data from Falling Weight Deflectometer (FWD) tests across different locations relative to the CU to measure and compare the deflection responses before and after the application of 25,000 APT traffic passes. The deflections measured by the FWD after applying APT traffic were lower than those measured before traffic. This deflection reduction could be caused by an asphalt stiffening due to the waste heat generated by the DWPT system, possible secondary compaction due to the APT traffic, or both.

See publication:
This publication pertains to:
Electrified Roadways
Publication Authors:
  • Oscar Moncada
  • Pablo Orosa Iglesias
  • John Haddock
It appeared in:
Peer-reviewed conference proceedings
Dynamic wireless power transfer, Accelerated Pavement Testing, Falling weight deflectometer, Pavement condition, Pavement management systems