Abstract
The main purpose of this paper is to present an alternative performance index using approximate entropy. We focus our attention on a correlation with the complexity of vibration as an indication of potential damage in the building. When there is abnormality in human cells, the vibration of these cells becomes irregular. Using this as inspiration, the complexity of vibrations in a wooden building will be used as a performance index. In this study, we chose Approximate Entropy to represent this complexity. A series of experiments for two wooden houses was conducted. Those two houses were put on the vibration table called 'E-defense', and excited by a white noise in various levels and by a recorded earthquake motion. The value of Approximate Entropy and natural frequency were calculated from the acceleration response of the houses. It is indicated that Approximate Entropy has a good correlation with natural frequencies which may indicate a correlation with damage.
| Original language | English |
|---|---|
| Pages (from-to) | 95-99 |
| Number of pages | 5 |
| Journal | Materials Forum |
| Volume | 33 |
| Publication status | Published - 2008 |
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Keywords
- Approximate entropy
- Complexity
- Performance index
- System identification
- Wooden buildings
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanical Engineering
- Mechanics of Materials
Cite this
The use of approximate entropy in the generation of a seismic performance index for wooden buildings. / Take, Ayaka; Mita, Akira.
In: Materials Forum, Vol. 33, 2008, p. 95-99.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - The use of approximate entropy in the generation of a seismic performance index for wooden buildings
AU - Take, Ayaka
AU - Mita, Akira
PY - 2008
Y1 - 2008
N2 - The main purpose of this paper is to present an alternative performance index using approximate entropy. We focus our attention on a correlation with the complexity of vibration as an indication of potential damage in the building. When there is abnormality in human cells, the vibration of these cells becomes irregular. Using this as inspiration, the complexity of vibrations in a wooden building will be used as a performance index. In this study, we chose Approximate Entropy to represent this complexity. A series of experiments for two wooden houses was conducted. Those two houses were put on the vibration table called 'E-defense', and excited by a white noise in various levels and by a recorded earthquake motion. The value of Approximate Entropy and natural frequency were calculated from the acceleration response of the houses. It is indicated that Approximate Entropy has a good correlation with natural frequencies which may indicate a correlation with damage.
AB - The main purpose of this paper is to present an alternative performance index using approximate entropy. We focus our attention on a correlation with the complexity of vibration as an indication of potential damage in the building. When there is abnormality in human cells, the vibration of these cells becomes irregular. Using this as inspiration, the complexity of vibrations in a wooden building will be used as a performance index. In this study, we chose Approximate Entropy to represent this complexity. A series of experiments for two wooden houses was conducted. Those two houses were put on the vibration table called 'E-defense', and excited by a white noise in various levels and by a recorded earthquake motion. The value of Approximate Entropy and natural frequency were calculated from the acceleration response of the houses. It is indicated that Approximate Entropy has a good correlation with natural frequencies which may indicate a correlation with damage.
KW - Approximate entropy
KW - Complexity
KW - Performance index
KW - System identification
KW - Wooden buildings
UR - http://www.scopus.com/inward/record.url?scp=80053268383&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=80053268383&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:80053268383
VL - 33
SP - 95
EP - 99
JO - Materials Forum
JF - Materials Forum
SN - 0883-2900
ER -