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Apps for modal analysis to characterize the complex modulus of asphalt concrete

Gudmarsson, A. and Ryden, N. LU (2018) 10th International Conference on the Bearing Capacity of Roads, Railways and Airfields, BCRRA 2017 p.209-215
Abstract

The time and temperature dependent dynamic modulus of asphalt concrete is a key parameter to modern pavement design and to pavement quality. However, accurate measurements of the complex modulus through conventional cyclic testing are expensive regarding both time and costs. Novel test methods based on modal analysis facilitate economic, accurate and faster determination of linear viscoelastic material properties of asphalt concrete. The modal analysis is performed by using an impact hammer and an accelerometer to measure frequency response functions of asphalt concrete specimens with free boundary conditions. The complex modulus and complex Poisson’s ratio are determined by matching finite element computed frequency response functions... (More)

The time and temperature dependent dynamic modulus of asphalt concrete is a key parameter to modern pavement design and to pavement quality. However, accurate measurements of the complex modulus through conventional cyclic testing are expensive regarding both time and costs. Novel test methods based on modal analysis facilitate economic, accurate and faster determination of linear viscoelastic material properties of asphalt concrete. The modal analysis is performed by using an impact hammer and an accelerometer to measure frequency response functions of asphalt concrete specimens with free boundary conditions. The complex modulus and complex Poisson’s ratio are determined by matching finite element computed frequency response functions to the measurements. This paper presents one software application to perform the modal testing and one application to compute and optimize frequency response functions to determine the complex modulus and complex Poisson’s ratio. The software applications greatly simplifies the methodology to determine material properties through modal analysis of asphalt concrete specimens.

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Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
host publication
Bearing Capacity of Roads, Railways and Airfields - Proceedings of the 10th International Conference on the Bearing Capacity of Roads, Railways and Airfields, BCRRA 2017
editor
Al-Qadi, Imad L.; Scarpas, A. Tom; Loizos, Andreas; ; and
pages
7 pages
publisher
CRC Press/Balkema
conference name
10th International Conference on the Bearing Capacity of Roads, Railways and Airfields, BCRRA 2017
conference location
Athens, Greece
conference dates
2017-06-28 - 2017-06-30
external identifiers
  • scopus:85058504029
ISBN
9781138295957
DOI
10.1201/9781315100333-31
language
English
LU publication?
yes
id
64841e2a-7c4f-4653-ae5f-eeb93f581296
date added to LUP
2019-01-09 12:09:21
date last changed
2019-01-09 12:09:40
@inproceedings{64841e2a-7c4f-4653-ae5f-eeb93f581296,
  abstract     = {<p>The time and temperature dependent dynamic modulus of asphalt concrete is a key parameter to modern pavement design and to pavement quality. However, accurate measurements of the complex modulus through conventional cyclic testing are expensive regarding both time and costs. Novel test methods based on modal analysis facilitate economic, accurate and faster determination of linear viscoelastic material properties of asphalt concrete. The modal analysis is performed by using an impact hammer and an accelerometer to measure frequency response functions of asphalt concrete specimens with free boundary conditions. The complex modulus and complex Poisson’s ratio are determined by matching finite element computed frequency response functions to the measurements. This paper presents one software application to perform the modal testing and one application to compute and optimize frequency response functions to determine the complex modulus and complex Poisson’s ratio. The software applications greatly simplifies the methodology to determine material properties through modal analysis of asphalt concrete specimens.</p>},
  author       = {Gudmarsson, A. and Ryden, N.},
  editor       = {Al-Qadi, Imad L. and Scarpas, A. Tom and Loizos, Andreas},
  isbn         = {9781138295957},
  language     = {eng},
  location     = {Athens, Greece},
  pages        = {209--215},
  publisher    = {CRC Press/Balkema},
  title        = {Apps for modal analysis to characterize the complex modulus of asphalt concrete},
  url          = {http://dx.doi.org/10.1201/9781315100333-31},
  year         = {2018},
}