An Electromagnetic/Capacitive Composite Sensor for Testing of Thermal Barrier Coatings

Ren, Yuan; Pan, Mengchun; Chen, Dixiang

doi:10.3390/s18051630

Cited by 13 publications

(4 citation statements)

References 31 publications

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“…[184,185] , 如图16(c). 电磁感应传感器则主要是通过测量由电磁感应条件变化(如线圈几何参数 [186] 、互感系数 [187] 、涡流效应 [188] 、磁阻系数 [189] [178,190] , 如图16(d) [192] . 例如Festo的BMR (bionic motion robot) 柔性臂通过在操作臂中心布置光学形状传感器 [116] [193] , 不过这也增加了信号处理和模型重建的复杂性.…”

Section: 二维平面粘接unclassified

Status of and trends in soft pneumatic robotics

et al. 2020

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Section: 二维平面粘接unclassified

Status of and trends in soft pneumatic robotics

et al. 2020

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“…Therefore, timely detection of local corrosion that occurs under the coatings and in the defect is very important. Driven by reality, abundant detection technologies were developed, such as boron mirrors for tank inner walls [ 1 ], magnetic flux leakage technology for pipeline and tank corrosion [ 2 ], CCD imaging methods [ 1 ], ultrasonic guided waves technology [ 3 , 4 ], X-ray imaging methods [ 5 ], infrared thermal imaging methods [ 6 ], electromagnetic sensor [ 7 , 8 ], electrochemical probe technology, etc. [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

Construction of Zeolite-Loaded Fluorescent Supramolecular on-off Probes for Corrosion Detection Based on a Cation Exchange Mechanism

Yue

Ding

et al. 2021

Nanomaterials

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Metal engineering structures are commonly covered and protected by coatings. However, the early local corrosion under the coatings and at defects is difficult to detect and discover. Visibility to the naked eye means that corrosion has already developed and expanded. Therefore, it is practical significant to detect the early corrosion of coated metal. Based on the formation of iron ions and anodic acidification in the local corrosion process, iron ions and proton responsive fluorescent rhodamine B acylhydrazone on-off probes are prepared by newly improved methods and denoted as RBA. RBA are loaded on the surface and in the lattice cage of zeolite (ZEO) to protect RBA from premature exposure to the corrosive environment and fluorescence quenching. In corrosive environments, the RBA loaded on the surface are released and complex with iron ions in the environment to activate fluorescence characteristics. Simultaneously, due to the cation exchange of ZEO, iron ions enter the lattice cage of ZEO and combine with RBA in the lattice cage to turn on fluorescence. When applied in epoxy coatings, the RBA/ZEO effectively indicate the occurrence of corrosion under the coatings and at defects, and accurately locate the corrosion site. Nano-scale ZEO (or RBA/ZEO) fill the micropores such as pinholes and defects of the coatings, and increase the difficulty of diffusion and penetration of corrosive media into the coatings. The application of RBA/ZEO functional filler not only do not weaken the main anti-corrosion performance of the coatings, but also significantly improve it.

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“…The non-destructive measurement of TBC material parameters, and their evolution with aging, is of critical importance to their deployment and in-service monitoring. A range of different contact-type methods [3][4][5] have been used to provide this information. The applicability of contact methods is limited by the need for good physical contact with the coated surface and therefore the development of non-contact optical methods has also been necessary.…”

Section: Introductionmentioning

confidence: 99%

Terahertz optical thickness and birefringence measurement for thermal barrier coating defect location

Waddie¹,

Schemmel²,

Chalk³

et al. 2020

Opt. Express

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We present a normal incidence terahertz reflectivity technique to determine the optical thickness and birefringence of yttria-stabilized zirconia (YSZ) thermal barrier coatings (TBCs). Initial verification of the method was achieved by measurement of a set of fused silica calibration samples with known thicknesses and showed excellent agreement (<1% of refractive index) with the literature. The THz-measured optical thickness and its variation through the depth profile of the YSZ coating are shown to be in good agreement (<4%) with scanning electron microscope cross-sectional thickness measurements. In addition, the position of discontinuities in both the optical thickness and birefringence appear to be correlated to coating failure points observed during accelerated aging trials.

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An Electromagnetic/Capacitive Composite Sensor for Testing of Thermal Barrier Coatings

Cited by 13 publications

References 31 publications

Status of and trends in soft pneumatic robotics

Status of and trends in soft pneumatic robotics

Construction of Zeolite-Loaded Fluorescent Supramolecular on-off Probes for Corrosion Detection Based on a Cation Exchange Mechanism

Terahertz optical thickness and birefringence measurement for thermal barrier coating defect location

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