Next Article in Journal
A Feasibility Study on the Use of a Structured Light Depth-Camera for Three-Dimensional Body Measurements of Dairy Cows in Free-Stall Barns
Previous Article in Journal
Error Analysis of the K-Rb-21Ne Comagnetometer Space-Stable Inertial Navigation System
Article Menu
Issue 2 (February) cover image

Export Article

Open AccessArticle
Sensors 2018, 18(2), 671; https://doi.org/10.3390/s18020671

Study of Impact Damage in PVA-ECC Beam under Low-Velocity Impact Loading Using Piezoceramic Transducers and PVDF Thin-Film Transducers

1
College of Civil Engineering, Shenyang Jianzhu University, Shenyang 110168, China
2
Department of Mechanical Engineering, University of Houston, Houston, TX 77204, USA
3
College of Civil Engineering, Zhengzhou University, Zhengzhou 450001, China
4
Department of Civil and Environmental Engineering, University of Houston, Houston, TX 77204, USA
5
Department of Civil and Environmental Engineering, University of California, E4145 Engineering Gateway, Irvine, CA 92617, USA
These authors contributed equally to this paper.
*
Author to whom correspondence should be addressed.
Received: 3 January 2018 / Revised: 21 February 2018 / Accepted: 21 February 2018 / Published: 24 February 2018
(This article belongs to the Section Physical Sensors)
Full-Text   |   PDF [10768 KB, uploaded 26 February 2018]   |  

Abstract

Compared to conventional concrete, polyvinyl alcohol fiber reinforced engineering cementitious composite (PVA-ECC) offers high-strength, ductility, formability, and excellent fatigue resistance. However, impact-induced structural damage is a major concern and has not been previously characterized in PVA-ECC structures. We investigate the damage of PVA-ECC beams under low-velocity impact loading. A series of ball-drop impact tests were performed at different drop weights and heights to simulate various impact energies. The impact results of PVA-ECC beams were compared with mortar beams. A combination of polyvinylidene fluoride (PVDF) thin-film sensors and piezoceramic-based smart aggregate were used for impact monitoring, which included impact initiation and crack evolution. Short-time Fourier transform (STFT) of the signal received by PVDF thin-film sensors was performed to identify impact events, while active-sensing approach was utilized to detect impact-induced crack evolution by the attenuation of a propagated guided wave. Wavelet packet-based energy analysis was performed to quantify failure development under repeated impact tests. View Full-Text
Keywords: impact damage detection; PVA-ECC beam; piezoceramic transducers; PVDF transducers; active sensing approach; short-time Fourier transform; smart aggregate impact damage detection; PVA-ECC beam; piezoceramic transducers; PVDF transducers; active sensing approach; short-time Fourier transform; smart aggregate
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Qi, B.; Kong, Q.; Qian, H.; Patil, D.; Lim, I.; Li, M.; Liu, D.; Song, G. Study of Impact Damage in PVA-ECC Beam under Low-Velocity Impact Loading Using Piezoceramic Transducers and PVDF Thin-Film Transducers. Sensors 2018, 18, 671.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top