TY - JOUR
T1 - Evaluation of acoustic emission source localization accuracy in concrete structures
AU - Zhang, Fengqiao
AU - Pahlavan, Lotfollah
AU - Yang, Yuguang
PY - 2020
Y1 - 2020
N2 - Acoustic emission source localization is a promising monitoring technique for concrete structures. However, the accuracy of acoustic emission source localization is influenced by many factors, such as the presence of cracks, which are commonly observed in existing reinforced concrete structures. In this article, the acoustic emission source localization is evaluated using a numerical model with a total number of 11,827,200 independent simulated tests. In this work, the investigated influential factors include the presence of cracks, arrival time picking error, and senor layout. The accuracy of source localization is quantified by the characteristic error defined in this article. Using the proposed wave propagation properties, a relatively stable characteristic error of 150 mm is estimated in the detection zone with the maximum sensor spacing less than 1 m. The evaluation approach and simulated characteristic error are validated experimentally by comparing the 200 manually generated signals using hammer hits on a cracked concrete beam.
AB - Acoustic emission source localization is a promising monitoring technique for concrete structures. However, the accuracy of acoustic emission source localization is influenced by many factors, such as the presence of cracks, which are commonly observed in existing reinforced concrete structures. In this article, the acoustic emission source localization is evaluated using a numerical model with a total number of 11,827,200 independent simulated tests. In this work, the investigated influential factors include the presence of cracks, arrival time picking error, and senor layout. The accuracy of source localization is quantified by the characteristic error defined in this article. Using the proposed wave propagation properties, a relatively stable characteristic error of 150 mm is estimated in the detection zone with the maximum sensor spacing less than 1 m. The evaluation approach and simulated characteristic error are validated experimentally by comparing the 200 manually generated signals using hammer hits on a cracked concrete beam.
KW - accuracy
KW - Acoustic emission source localization
KW - arrival time picking error
KW - concrete structures
KW - crack
UR - http://www.scopus.com/inward/record.url?scp=85085491127&partnerID=8YFLogxK
U2 - 10.1177/1475921720915625
DO - 10.1177/1475921720915625
M3 - Article
AN - SCOPUS:85085491127
SN - 1475-9217
VL - 19
SP - 2063
EP - 2074
JO - Structural Health Monitoring
JF - Structural Health Monitoring
IS - 6
ER -