Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Structural Damage Detection and Localization with Unknown Post-Damage
  Feature Distribution Using Sequential Change-Point Detection Method   The high structural deficient rate poses serious risks to the operation of
many bridges and buildings. To prevent critical damage and structural collapse,
a quick structural health diagnosis tool is needed during normal operation or
immediately after extreme events. In structural health monitoring (SHM), many
existing works will have limited performance in the quick damage identification
process because 1) the damage event needs to be identified with short delay and
2) the post-damage information is usually unavailable. To address these
drawbacks, we propose a new damage detection and localization approach based on
stochastic time series analysis. Specifically, the damage sensitive features
are extracted from vibration signals and follow different distributions before
and after a damage event. Hence, we use the optimal change point detection
theory to find damage occurrence time. As the existing change point detectors
require the post-damage feature distribution, which is unavailable in SHM, we
propose a maximum likelihood method to learn the distribution parameters from
the time-series data. The proposed damage detection using estimated parameters
also achieves the optimal performance. Also, we utilize the detection results
to find damage location without any further computation. Validation results
show highly accurate damage identification in American Society of Civil
Engineers benchmark structure and two shake table experiments.

3
The categories of this paper are: physics
29
The categories of this paper are: funct-an
23
The categories of this paper are: solv-int
30
The categories of this paper are: q-alg
33
The categories of this paper are: plasm-ph
6
The categories of this paper are: astro-ph
2
The categories of this paper are: math
20
The categories of this paper are: acc-phys
7
The categories of this paper are: hep-th
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The categories of this paper are: hep-ex
34
The categories of this paper are: chem-ph
4
The categories of this paper are: cond-mat
10
The categories of this paper are: q-bio
18
The categories of this paper are: econ
22
The categories of this paper are: chao-dyn
35
The categories of this paper are: mtrl-th