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en: Depth estimation of pipe wall thinning using multifrequency reflection coefficients of T(0,1) mode-guided waves with supervised multilayer perceptron

en: Structural Health Monitoring

ja: Structural Health Monitoring


en: Active Thermography Inspection of Surface-whitened Mortars Measurement of Surface Spectral Absorptivity for Investigation of Efficient Heating Light Wavelengths

en: Journal of Nondestructive Evaluation

ja: Journal of Nondestructive Evaluation


en: Active thermography inspection of CFRP using cyclic heating and Fourier transform - comparison with flash heating method

en: Advanced Composite Materials

ja: Advanced Composite Materials


en: Active thermography inspection of residual water in steel pipes: Detection and water height estimation

en: Nuclear Engineering and Design

ja: Nuclear Engineering and Design


en: Polarization information landscapes expanded from single-shot images of ring-like diffraction patterns

en: OSA Continuum

ja: OSA Continuum


en: Influence of composition and surface discoloration of concrete on active thermographic nondestructive inspection

en: Measurement

ja: Measurement


en: アクティブサーモグラフィを用いた調合の異なるポリマーセメント系塗膜防水層のウェザリングによる伸び性能の低下割合の推定

en: Proc.of the Japan Concrete Institute

ja: コンクリート工学年次論文集


en: Air-coupled ultrasonic vertical reflection method using pulse compression and various window functions: feasibility study

en: Japanese Journal of Applied Physics

ja: Japanese Journal of Applied Physics


en: A mathematical model of the Lamb wave reflection at a two-dimensional rectangular notch


en: Active thermographic inspection of carbon fiber reinforced plastic laminates using laser scanning heating

en: Composite Structures

ja: Composite Structures


en: アクティブサーモグラフィによるポリマーセメント系防水層の劣化度の推定

ja: アクティブサーモグラフィによるポリマーセメント系防水層の劣化度の推定

ja: コンクリート工学年次論文集


en: アクティブサーモグラフィによる塗膜系仕上材料下のコンクリートひび割れ位置の推定法の提案

ja: コンクリート工学年次論文集


en: Attenuation characteristics of the leaky T(0,1) mode guided wave propagating in piping coated with anticorrosion grease


en: Reducing inspection time of pulse phase thermography by using phase data at higher frequency range

en: Infrared Physics & Technology

ja: Infrared Physics & Technology


en: Influence of Composite Ply Layup on Active Thermographic Non-destructive Inspection of Carbon Fiber-Reinforced Plastic Laminates

en: Journal of Nondestructive Evaluation


en: Inspection of initial failure of polymer cement waterproofing membranes by using active thermography

en: Proceedings of HydrophobeVIII

ja: Proceedings of HydrophobeVIII


en: アクティブサーモグラフィによるポリマーセメント系塗膜防水層の初期不具合の検出方法の検討

en: コンクリート工学年次論文報告集

ja: コンクリート工学年次論文報告集


en: Wall thickness measurement using resonant phenomena of circumferential Lamb waves generated by plural transducer elements located evenly on girth


en: Non-destructive inspection of CFRP laminates using phase-transformed induction heating thermography

ja: 位相解析を利用した誘導加熱励起サーモグラフィ法によるCFRP積層板の非破壊検査

en: This study focused on non-destructive inspection of CFRPs using induction-heating thermography. To enhance the defect detectability, phase images constructed by Fourier transformation from conventional thermal images were used. The temperature images obtained using a CFRP specimen with artificial delamination included strong non-uniform temperature distribution caused by non-uniform heating by induction coil, and this distribution significantly disturbed the images of the inside defects. On the other hand, in the phase images, the influence of non-uniform heating was suppressed at certain frequencies, and the defects that could not be detected in the temperature images were detected. Analytical studies revealed that the phase at a location in the non-uniformly heated region periodically oscillated with a period that is reciprocal of the heating duration when the phase were calculated from the temperature data including both heating and cooling stages. Owing to this oscillation, phase contrast between the regions heated and unheated by the induction coils was periodically decreased, which means that the effect of non-uniform heating was periodically suppressed and that defects can be easier detected in the phase images.

en: Transactions of the JSME

ja: 日本機械学会論文集


en: Torsional modulus and internal friction of polyacrylonitrile- and pitch-based carbon fibers

en: Journal of Materials Science

ja: Journal of Materials Science


en: Mechanical properties of Mg2Si with metallic binders

en: Japanese Journal of Applied Physics


en: Time-dependent deformation of ROHACELL-core CFRP sandwich panels

en: Advanced Composite Materials


en: Stress analysis and output power measurement of an n-Mg2Si thermoelectric power generator with an unconventional structure

en: Journal of Electronic Materials

ja: Journal of Electronic Materials


en: Time-depend Deformation of CFRP Sandwich Panels with ROHACELL Core

ja: ロハセルを用いたCFRPサンドイッチパネルの経時変形

en: In this study, we investigated analytically and experimentally time-dependent deformation of CFRP sandwich panels with polymer foam core ROHACELL due to temperature change and moisture absorption and desorption. Tensile tests for the ROHACELLs were carried out before and after the moisture absorption using digital image correlation method, and we obtained stress–strain relationship in each condition. Surface deformations of sandwich panels were calculated by the finite element analyses considering the elasto-plastic constitutive equation of the ROHACELLs based on the tensile test results. Experimentally measured deformation in the sandwich panels after the moisture absorption was approximately 100μm. This was much larger than the analytical result. The deformations remained in after re-dry condition. On the basis of this study, we suggest that the main reason for the deformation in the sandwich panels could be irreversible shrinkage of the ROHACELLs caused by absorbing moisture during exposed in high temperature and high humidity environment.

en: Journal of the Japan Society for Composite Materials

ja: 日本複合材料学会誌


en: Effects of heating duration on pulse phase thermographic non-destructive testing

en: Infrared Physics & Technology


en: Detecting deeper defects using pulse phase thermography


en: Effect of Anisotropic Properties on Defect Detection by Pulse Phase Thermography


en: アクティブサーモグラフィ法によるポリマーセメント系塗膜防水層の初期不具合の検出方法の検討

en: 2016年度(第87回)関東支部優秀研究報告集

ja: 2016年度(第87回)関東支部優秀研究報告集