TY - JOUR
T1 - Nondestructive Testing for Multi-Layer Metal-Metal Bonded Structure by Using Inductive Lock-In Thermograhy
AU - Zhu, Yuyu
AU - Gao, Bin
AU - Tian, Gui Yun
AU - Woo, Wai Lok
AU - Tang, Guangping
AU - Sun, Chaoming
AU - Li, Jianwen
PY - 2017/10/15
Y1 - 2017/10/15
N2 - Multilayer materials with metal-metal bonded structure have been widely
applied in aviation, aerospace and nuclear industrial fields. The
presence of inner defects such as debonding, air gaps leads to
significant degradation of the load capacity and mechanical behaviors.
Due to their complex structure, debonding detection in metal-metal
structure inherently remains challenge. This paper proposes a
feasibility study of non-destructive inspection of debonding defect in
lead-steel sample by using inductive lock-in thermography (ILT). The
detectability validation is carried out based on experimental studies.
Theoretical analysis, excitation source and system design as well as
various influence parameters of ILT are discussed and optimized.
Fourier-transform based post-processing has been investigated to analyze
both magnitude and phase images for defects identification. The obtained
results have been promising validated and it indicated the ability to
improve the signal-to-noise ratio. The comparative experiment using
different methods (ILT, ECPT, and OLT) has been carried out. The results
have revealed that the ILT has advantages and could be served as a
strong candidate for practical adoption in debonding defect inspection
in metal-metal bonded sample.
AB - Multilayer materials with metal-metal bonded structure have been widely
applied in aviation, aerospace and nuclear industrial fields. The
presence of inner defects such as debonding, air gaps leads to
significant degradation of the load capacity and mechanical behaviors.
Due to their complex structure, debonding detection in metal-metal
structure inherently remains challenge. This paper proposes a
feasibility study of non-destructive inspection of debonding defect in
lead-steel sample by using inductive lock-in thermography (ILT). The
detectability validation is carried out based on experimental studies.
Theoretical analysis, excitation source and system design as well as
various influence parameters of ILT are discussed and optimized.
Fourier-transform based post-processing has been investigated to analyze
both magnitude and phase images for defects identification. The obtained
results have been promising validated and it indicated the ability to
improve the signal-to-noise ratio. The comparative experiment using
different methods (ILT, ECPT, and OLT) has been carried out. The results
have revealed that the ILT has advantages and could be served as a
strong candidate for practical adoption in debonding defect inspection
in metal-metal bonded sample.
KW - Multi-layer metal-metal bonding structure
KW - detectability sensitivity
KW - inductive lock-in thermography
KW - non-destructive technique
U2 - 10.1109/JSEN.2017.2741581
DO - 10.1109/JSEN.2017.2741581
M3 - Article
VL - 17
SP - 6716
EP - 6723
JO - IEEE Sensors Journal
JF - IEEE Sensors Journal
SN - 1530-437X
IS - 20
ER -