| Residential College | false |
| Status | 已發表Published |
| Signal-based acoustic emission monitoring on mortar using cement-based piezoelectric sensors | |
| Lu Y.2; Li Z.2; Qin L.1 | |
| 2011-03-01 | |
| Source Publication | ACI Materials Journal
 |
| ISSN | 0889325X |
| Volume | 108Issue:2Pages:178-186 |
| Abstract | Signal-based acoustic emission (AE) monitoring on mortar was performed under three types of static loading patterns: cubic-splitting, direct-shear, and pullout. Each of the applied loading patterns was expected to produce a distinguished fracture process on mortar. This study was the first to combine a cement-based piezoelectric sensor (such as an AE transducer) and a homeprogrammed DEcLIN monitoring system for monitoring the concrete fracture process in mortar. It was found that the cementbased piezoelectric sensor has much better sensitivity and a much broader frequency domain response range as compared to traditional piezoelectric ceramic transducers after embedding into mortar specimens. The three-dimensional (3-D) localization of AE sources and the signal-based AE energy index obtained by the DEcLIN system were used to vividly explain and quantitatively evaluate the fracture processes of mortar specimens under various types of loadings. It was revealed that the fracture processes in mortar under the cubic-splitting and direct-shear loading patterns were evidently more brittle than that of the pullout test. Copyright © 2011, American Concrete Institute. All rights reserved,. |
| Keyword | Acoustic emission Cement-based piezoelectric sensor Energy index Fracture Mortar |
| URL | View the original |
| Language | 英語English |
| Fulltext Access | |
| Document Type | Journal article |
| Collection | University of Macau |
| Affiliation | 1.University of Jinan 2.Hong Kong University of Science and Technology |
| Recommended Citation GB/T 7714 | Lu Y.,Li Z.,Qin L.. Signal-based acoustic emission monitoring on mortar using cement-based piezoelectric sensors[J]. ACI Materials Journal, 2011, 108(2), 178-186. |
| APA | Lu Y.., Li Z.., & Qin L. (2011). Signal-based acoustic emission monitoring on mortar using cement-based piezoelectric sensors. ACI Materials Journal, 108(2), 178-186. |
| MLA | Lu Y.,et al."Signal-based acoustic emission monitoring on mortar using cement-based piezoelectric sensors".ACI Materials Journal 108.2(2011):178-186. |
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