The Sensitivity of Acoustic-Laser Technique for Detecting the Defects in CFRP-Bonded Concrete Systems
This paper presents an experimental study to evaluate the sensitivity of acoustic-laser technique in defect detection. The technique is particularly useful towards the detection of near-surface defects in fiber reinforced polymer-bonded concrete by vibrating the material with an acoustic excitation...
| Main Authors: | , |
|---|---|
| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
Springer US
2016
|
| Online Access: | http://hdl.handle.net/1721.1/103341 |
| _version_ | 1826190069623422976 |
|---|---|
| author | Qiu, Qiwen Lau, Tak bun denvid |
| author2 | Massachusetts Institute of Technology. Department of Civil and Environmental Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Civil and Environmental Engineering Qiu, Qiwen Lau, Tak bun denvid |
| author_sort | Qiu, Qiwen |
| collection | MIT |
| description | This paper presents an experimental study to evaluate the sensitivity of acoustic-laser technique in defect detection. The technique is particularly useful towards the detection of near-surface defects in fiber reinforced polymer-bonded concrete by vibrating the material with an acoustic excitation and measuring the vibration signals with a laser beam. However, relatively little is known about the sensitivity of acoustic-laser technique. More research work should be conducted to evaluate the effectiveness of the technique when adopted for defect detection. It is also important to investigate the limits of the technique performance with respect to varying operational conditions so as to determine ways of improving the detectability. For this purpose, operational conditions in terms of acoustic excitation and laser beam incidence are investigated for their effectiveness in detecting near-surface defects and a reliable defect detection scheme using our portable equipment is therefore recommended. This work provides a basis for further improving such technique which can be used in other engineering applications including quality control of materials and product development process. |
| first_indexed | 2024-09-23T08:34:34Z |
| format | Article |
| id | mit-1721.1/103341 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T08:34:34Z |
| publishDate | 2016 |
| publisher | Springer US |
| record_format | dspace |
| spelling | mit-1721.1/1033412022-09-30T09:42:40Z The Sensitivity of Acoustic-Laser Technique for Detecting the Defects in CFRP-Bonded Concrete Systems Qiu, Qiwen Lau, Tak bun denvid Massachusetts Institute of Technology. Department of Civil and Environmental Engineering Lau, Tak bun denvid This paper presents an experimental study to evaluate the sensitivity of acoustic-laser technique in defect detection. The technique is particularly useful towards the detection of near-surface defects in fiber reinforced polymer-bonded concrete by vibrating the material with an acoustic excitation and measuring the vibration signals with a laser beam. However, relatively little is known about the sensitivity of acoustic-laser technique. More research work should be conducted to evaluate the effectiveness of the technique when adopted for defect detection. It is also important to investigate the limits of the technique performance with respect to varying operational conditions so as to determine ways of improving the detectability. For this purpose, operational conditions in terms of acoustic excitation and laser beam incidence are investigated for their effectiveness in detecting near-surface defects and a reliable defect detection scheme using our portable equipment is therefore recommended. This work provides a basis for further improving such technique which can be used in other engineering applications including quality control of materials and product development process. Croucher Foundation (Start-up Allowance for Croucher Scholars Grant No. 9500012) Research Grants Council (Hong Kong, China) (Early Career Scheme Grant No. 139113) 2016-06-24T21:13:19Z 2017-03-01T16:14:48Z 2016-04 2015-05 2016-05-23T12:15:35Z Article http://purl.org/eprint/type/JournalArticle 0195-9298 1573-4862 http://hdl.handle.net/1721.1/103341 Qiu, Qiwen, and Denvid Lau. “The Sensitivity of Acoustic-Laser Technique for Detecting the Defects in CFRP-Bonded Concrete Systems.” Journal of Nondestructive Evaluation 35.2 (2016): n. pag. en http://dx.doi.org/10.1007/s10921-016-0351-y Journal of Nondestructive Evaluation Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ Springer Science+Business Media New York application/pdf Springer US Springer US |
| spellingShingle | Qiu, Qiwen Lau, Tak bun denvid The Sensitivity of Acoustic-Laser Technique for Detecting the Defects in CFRP-Bonded Concrete Systems |
| title | The Sensitivity of Acoustic-Laser Technique for Detecting the Defects in CFRP-Bonded Concrete Systems |
| title_full | The Sensitivity of Acoustic-Laser Technique for Detecting the Defects in CFRP-Bonded Concrete Systems |
| title_fullStr | The Sensitivity of Acoustic-Laser Technique for Detecting the Defects in CFRP-Bonded Concrete Systems |
| title_full_unstemmed | The Sensitivity of Acoustic-Laser Technique for Detecting the Defects in CFRP-Bonded Concrete Systems |
| title_short | The Sensitivity of Acoustic-Laser Technique for Detecting the Defects in CFRP-Bonded Concrete Systems |
| title_sort | sensitivity of acoustic laser technique for detecting the defects in cfrp bonded concrete systems |
| url | http://hdl.handle.net/1721.1/103341 |
| work_keys_str_mv | AT qiuqiwen thesensitivityofacousticlasertechniquefordetectingthedefectsincfrpbondedconcretesystems AT lautakbundenvid thesensitivityofacousticlasertechniquefordetectingthedefectsincfrpbondedconcretesystems AT qiuqiwen sensitivityofacousticlasertechniquefordetectingthedefectsincfrpbondedconcretesystems AT lautakbundenvid sensitivityofacousticlasertechniquefordetectingthedefectsincfrpbondedconcretesystems |