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Austin Downey  - - - 
Top co-authors
Filippo Ubertini

63 shared publications

Department of Civil and Environmental Engineering, University of Perugia, Perugia, Umbria, Italy

Simon Laflamme

36 shared publications

Dept. of Civil, Construction, and Environmental Engineering, Iowa State Univ., Ames, IA 50011-1066

Enrique García-Macías

16 shared publications

Department of Continuum Mechanics and Theory of Structures, Universidad de Sevilla Escuela Tecnica Superior de Ingenieria de Sevilla, E.T.S. de Ingeniería C. de los Descubrimientos, Sevilla, Sevilla, Andalucía, 41092, SPAIN

A. D’Alessandro

2 shared publications

Department of Civil and Environmental Engineering, University of Perugia, Perugia, Italy

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Publication Record
Distribution of Articles published per year 

Total number of journals
published in
 
4
 
Publications
Article 27 Reads 0 Citations Recent Advances on SHM of Reinforced Concrete and Masonry Structures Enabled by Self-Sensing Structural Materials Filippo Ubertini, Antonella D'alessandro, Austin Downey, Enr... Published: 14 November 2017
Proceedings, doi: 10.3390/ecsa-4-04889
DOI See at publisher website
Article 0 Reads 1 Citation Optimal sensor placement within a hybrid dense sensor network using an adaptive genetic algorithm with learning gene poo... Austin Downey, Simon Laflamme, Chao Hu Published: 28 April 2017
doi: 10.1177/1475921717702537
DOI See at publisher website
Conference 0 Reads 0 Citations Experimental study of thin film sensor networks for wind turbine blade damage detection A. Downey, S. Laflamme, H. Sauder, F. Ubertini, P. Sarkar Published: 01 January 2017
43RD ANNUAL REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION, VOLUME 36, doi: 10.1063/1.4974617
DOI See at publisher website
Article 0 Reads 6 Citations Reconstruction of in-plane strain maps using hybrid dense sensor network composed of sensing skin Austin Downey, Simon Laflamme, Filippo Ubertini Published: 14 November 2016
Measurement Science and Technology, doi: 10.1088/0957-0233/27/12/124016
DOI See at publisher website
Article 0 Reads 3 Citations High capacity variable friction damper based on band brake technology Austin Downey, Liang Cao, Simon Laflamme, Douglas Taylor, Ja... Published: 01 April 2016
Engineering Structures, doi: 10.1016/j.engstruct.2016.01.035
DOI See at publisher website ABS Show/hide abstract
Highlights•Proposal of a high performance, controllable, friction damping device.•Friction damper is based on the mechanically robust double wrap band brake.•Possible implementation within a structural system is discussed.•A mathematical model is developed for the dampers hysteretic behavior.•Laboratory verification of the damper demonstrates a damping force of 45 kN. AbstractImplementation of high performance controllable damping devices can ameliorate cost-effectiveness of structural systems for mitigation of natural hazards. However, the applications of these damping systems are limited due to a lack of (1) mechanical robustness; (2) electrical reliability; and (3) large resisting force capability. To broaden the implementation of modern damping systems, a novel semi-active damping device is proposed. The device, termed Banded Rotary Friction Device (BRFD), has enhanced applicability compared to other proposed damping systems due to its cost-effectiveness, high damping performance, mechanical robustness, and technological simplicity. Its mechanical principle is based on a band brake, which results in a high amplification of the applied force while enabling a variable control force. The theoretical model of the BRFD is presented and experimentally verified by subjecting a prototype to various harmonic loads. Results show that the prototype BRFD is capable of a maximum force of 45 kN (10 kips) using only a 267 N (60 lb) actuation force, therefore providing a mechanical advantage of 169. A 3-stage dynamic model previously developed by the authors can successfully be used to model the dynamic behavior of the BRFD.
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