Non-destructive damage evaluation of Ni-base heat-resisted alloy in the air by spectrum analysis of the reflected visible light

2020 ◽  
Vol 2020.55 (0) ◽  
pp. 167_paper
Author(s):  
Shin KASAMA ◽  
Ken SUZUKI ◽  
Hideo MIURA
Keyword(s):  
Visible Light ◽  
Spectrum Analysis ◽  
Damage Evaluation ◽  
Non Destructive

scholarly journals Imprinted plasmonic measuring nanocylinders for nanoscale volumes of materials

Nanophotonics ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 167-176 ◽  
Author(s):  
Jinfeng Zhu ◽  
Xizhao Chen ◽  
Yinong Xie ◽  
Jun-Yu Ou ◽  
Huanyang Chen ◽  
...  
Keyword(s):  
Analytical Chemistry ◽  
Visible Light ◽  
Optical Measurement ◽  
Low Cost ◽  
Soft Materials ◽  
Volume Changes ◽  
Fast Measurement ◽  
Biomedical Sensing ◽  
Material Volume ◽  
Non Destructive

AbstractOptical measurement of materials at the nanoscale is important for nanotechnology. Various plasmonic nanorulers have been studied for measuring nanoscale distance and orientation of materials, but they lack the capability to contain and measure nanoscale volumes, especially for liquid or soft materials. Here, we demonstrate the use of imprinted plasmonic volumetric nanocylinders, which act as nanoscale graduated cylinders and facilitate nanomaterial measurement via visible light. Our theoretical and experimental achievements illuminate a promising method for non-destructive, low-cost and fast measurement of material volume changes at the nanoscale, which will benefit the fields of analytical chemistry, nanofabrication and biomedical sensing.

EVALUATION OF DAMAGE IN STEELS SUBJECTED TO EXPLOITATION LOADING - DESTRUCTIVE AND NON-DESTRUCTIVE METHODS

2008 ◽  
Vol 22 (31n32) ◽  
pp. 5533-5538 ◽  
Author(s):  
ZBIGNIEW L. KOWALEWSKI ◽  
SŁAWOMIR MACKIEWICZ ◽  
JACEK SZELĄŻEK ◽  
KRYSTYNA PIETRZAK ◽  
BOLESŁAW AUGUSTYNIAK
Keyword(s):  
Plastic Deformation ◽  
Damage Identification ◽  
Ultimate Tensile Stress ◽  
Damage Evaluation ◽  
Damage Development ◽  
Tension Tests ◽  
Magnetic Techniques ◽  
Development Evaluation ◽  
Non Destructive ◽  
Destructive Methods

Damage due to creep and plastic flow is assessed using destructive and non-destructive methods in steels (40HNMA and P91). In the destructive methods the standard tension tests were carried out after prestraining and variations of the selected tension parameters were taken into account for damage identification. In order to assess a damage development during the creep and plastic deformation the tests for both steels were interrupted for a range of the selected strain magnitudes. The ultrasonic and magnetic techniques were used as the non-destructive methods for damage evaluation. The last step of the experimental programme contained microscopic observations. A very promising correlation between parameters of methods for damage development evaluation was achieved. It is well proved for the ultimate tensile stress and birefringence coefficient.

Temperature Dependence of Quiescent Currents as a Defect Prognosticator and Evaluation Tool

1996 ◽  
Author(s):  
J.S. Seo ◽  
S.S. Lee ◽  
S. Daniel ◽  
C.K. Yoon
Keyword(s):  
Spectrum Analysis ◽  
Theoretical Perspective ◽  
Temperature Curve ◽  
Photoemission Spectrum ◽  
Defect Characterization ◽  
Evaluation Tool ◽  
Actual Case ◽  
Valuable Complement ◽  
Current Characteristics ◽  
Non Destructive

Abstract The dependence of a defective device's voltage-current characteristics on temperature is studied, both from a theoretical perspective and through a series of actual case studies. The shape of the current vs. temperature curve is shown to be a good prognosticator of the defect type, and as such a valuable complement to other non-destructive defect characterization techniques such as photoemission spectrum analysis [1].

Review of Transverse Beam Profile Measurements Using Synchrotron Radiation

2020 ◽  
Vol 1 (2) ◽  
pp. 13-18
Author(s):  
Emy Mulyani, J.W. Flanagan
Keyword(s):  
Synchrotron Radiation ◽  
Visible Light ◽  
Beam Profile ◽  
Electromagnetic Spectrum ◽  
Transverse Beam ◽  
X Ray ◽  
Light Region ◽  
Broad Energy Range ◽  
Practical Experiences ◽  
Non Destructive

Abstract –Synchrotron radiation (SR) is a tool for non-destructive beam diagnostics since its characters are substantially related to those of the source beam. The spectrum of SR is extremely intense and extends over a broad energy range from the infrared through the visible and ultraviolet, into the soft and hard X-ray regions of the electromagnetic spectrum. The visible light (400 – 800 nm) and X-ray (0.05 – 0.3 nm) regions are used in the beam instrumentation. In the visible light region, transverse beam profile or size diagnostics can be done by an interferometer (light is observed as a wave). Meanwhile, in the submicron beam size measurements, the X-ray SR monitor is commonly used. This paper reports the review of transverse beam profile measurements using SR covering principles and practical experiences with the technique at some accelerator facilities such as Photon Factory, Diamond Light Source, CesrTA, and SuperKEKB. Key words: accelerator, beam instrumentation, transverse beam profile, synchrotron radiation, X-ray, visible light

Non-Destructive Evaluation of the Degradation of Ni-Base Superalloy in the Air by Reflectance Spectrum Analysis

2020 ◽  
Author(s):  
Shin Kasama ◽  
Ken Suzuki ◽  
Hideo Miura
Keyword(s):  
Power Generation ◽  
Plastic Deformation ◽  
Spectrum Analysis ◽  
Reflectance Spectrum ◽  
Thermal Power ◽  
Renewable Energies ◽  
Fatigue Load ◽  
Creep Fatigue ◽  
Non Destructive ◽  
Base Superalloy

Abstract Thermal power generation is required to be highly efficient due to concerns such as environment and energy problems. In order to improve its efficiency, it is thermodynamically essential to increase operating temperature. In addition, since thermal power generation is expected to control its output to be coexistent with renewable energies of which output varies frequently depending on weather, not only simple fatigue or creep load but also creep-fatigue load is applied to its component because it is required to assure the safe and stable energy supply under random output of the renewable energies. Since the effective lifetime of heat-resistant alloys decreases drastically under creep-fatigue load, however, it is very important to develop a non-destructive inspection method which can detect the degradation of the crystallinity of the alloys such as local plastic deformation, local oxidation, and local change of micro texture (segregation/precipitation). In this research, the reflectance spectrum analysis of the component elements was applied to the observation of the change in the local crystallinity of Ni-base superalloy (Alloy 617). A creep-fatigue test was applied to a small specimen, and the change of the local reflectance spectrum was measured under the irradiation of a white light. It was confirmed that the change of the surface roughness in the damaged area caused by plastic deformation and the growth of the surface oxide were successfully observed by the spectrum analysis. In addition, the distribution of fine carbides and nitrides was visualized by the spectrum analysis. It was also confirmed that a thick Cr-rich oxide layer grew at the grain boundaries only in the heavily damaged area. Finally, it was concluded that the creep-fatigue damage was clearly visualized by the spectrum analysis.

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