Abstract
A novel second-order output spectrum (SOOS) based method with a local tuning approach (LTA) is proposed in this paper to locate multiple bolt-loosening faults in complex structures. This new method utilizes a more general multi-degree-of-freedom (MDOF) model with nonlinear components, due to not only bolt-loosening faults but also inherently existing nonlinearity in structures, to derive the SOOS of virtual beam-like structures. Through the LTA, one extra equation is given to derive the local SOOS based damage indicator. In numerical study, the results of comparison with previous methods demonstrate that the fault feature in proposed method provides more local characteristics. Hence, this novel SOOS based method gives more accurate information about the fault location and can be used as an effective and reliable nondestructive evaluation method (NDE) for the detection and location of multiple faults in complex structure with inherent nonlinearity.
| Original language | English |
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| Title of host publication | 2019 12th Asian Control Conference (ASCC) |
| Publisher | IEEE |
| Pages | 1483-1488 |
| Number of pages | 6 |
| ISBN (Electronic) | 9784888983006, 9784888983013 |
| ISBN (Print) | 9781728102634 |
| Publication status | Published - 2019 |
| Externally published | Yes |
| Event | 12th Asian Control Conference (ASCC 2019) - Kitakyushu, Japan Duration: 9 Jun 2019 → 12 Jun 2019 |
Publication series
| Name | Asian Control Conference ASCC |
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| ISSN (Print) | 2072-5639 |
Conference
| Conference | 12th Asian Control Conference (ASCC 2019) |
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| Abbreviated title | ASCC2019 |
| Place | Japan |
| City | Kitakyushu |
| Period | 9/06/19 → 12/06/19 |
Funding
This work was supported in part by the GRF project (15206717) of Hong Kong RGC, and internal Research Grants of Hong Kong Polytechnic University. *Dr XJ Jing is the corresponding author.
Research Keywords
- Bolt loosening
- Damage indicator
- Fault location
- Nonlinearity