TY - JOUR
T1 - Eigenfrequecy-based damage identification method for non-destructive testing based on topology optimization
AU - Nishizu, T.
AU - Takezawa, A.
AU - Kitamura, M.
N1 - Funding Information:
This work was supported by JSPS KAKENHI [Grant Numbers: 25820422, 24360356]; Fundamental Research Developing Association for Shipbuilding and Offshore (REDAS); and a Sasakawa Scientific Research Grant.
Publisher Copyright:
© 2016 Informa UK Limited, trading as Taylor & Francis Group.
PY - 2017/3/4
Y1 - 2017/3/4
N2 - Non-destructive testing (NDT) detects damage according to a difference in a physical phenomenon between a normal structure and damaged structure. As a solution avoiding human errors in NDT, a numerical method based on a dynamical numerical analysis model and a structural optimization algorithm was proposed. This method automatically derives a structure with a response that is equal to that of a damaged structure through an optimization procedure. Among structural optimization methods, topology optimization can optimize the structure fundamentally by changing the topology and not just the shape of a structure. Thus, topology optimization is employed together with eigenfrequency analysis, which is the most fundamental methodology of NDT. The proposed method derives a structure that has the same eigenfrequencies as a damaged structure employing topology optimization. The shape and location of damage can be identified through the optimal shape obtained.
AB - Non-destructive testing (NDT) detects damage according to a difference in a physical phenomenon between a normal structure and damaged structure. As a solution avoiding human errors in NDT, a numerical method based on a dynamical numerical analysis model and a structural optimization algorithm was proposed. This method automatically derives a structure with a response that is equal to that of a damaged structure through an optimization procedure. Among structural optimization methods, topology optimization can optimize the structure fundamentally by changing the topology and not just the shape of a structure. Thus, topology optimization is employed together with eigenfrequency analysis, which is the most fundamental methodology of NDT. The proposed method derives a structure that has the same eigenfrequencies as a damaged structure employing topology optimization. The shape and location of damage can be identified through the optimal shape obtained.
KW - Topology optimization
KW - eigenfrequency analysis
KW - non-destructive testing
KW - sensitivity analysis
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U2 - 10.1080/0305215X.2016.1190350
DO - 10.1080/0305215X.2016.1190350
M3 - Article
AN - SCOPUS:84978977111
SN - 0305-215X
VL - 49
SP - 417
EP - 433
JO - Engineering Optimization
JF - Engineering Optimization
IS - 3
ER -