Faculty Profiles - INAGAKI Tetsuya

Papers - INAGAKI Tetsuya

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Modulus of elasticity prediction model on sugi (Cryptomeria japonica) lumber using online near-infrared (NIR) spectroscopic system Reviewed International coauthorship

International Wood Products Journal Vol. 8 page： 193 - 200 2017

Modulus of elasticity prediction model on sugi (Cryptomeria japonica) lumber using online near-infrared (NIR) spectroscopic system Reviewed

Imran Arra'd Sofianto, Tetsuya Inagaki, Kouchi Kato, Mariya Itoh, Satoru Tsuchikawa

INTERNATIONAL WOOD PRODUCTS JOURNAL Vol. 8 ( 4 ) page： 193 - 200 2017

Language：English Publishing type：Research paper (scientific journal) Publisher：TAYLOR & FRANCIS LTD

In this study, static bending measurements and online NIR spectra acquisitions were combined to construct modulus of elasticity (MOE) prediction model for sugi lumber. NIR spectra were acquired from tangential surface of sugi lumbers at a speed of 120 m min(-1) to assess its effectiveness in the wood industry. Cross-validation partial least squares regression (CV-PLSR) and test-set-validation partial least squares regression (TSV-PLSR) analyses were employed for analysing the data. The second derivative (2d) spectra with 19 smoothing points (Savitzky-Golay algorithm, second polynomial) gave the best result as spectral pre-processing treatment with the lowest root mean square error of cross-validation and the highest coefficient of determination for cross-validation based on the optimum number of latent variables as assessed from the minimum validation residual variance value in the CV-PLSR analysis. These 2d spectra were then used in the TSV-PLSR analysis for 100 repetitions to check the robustness of the calibration.

DOI： 10.1080/20426445.2017.1378398

Web of Science

Scopus

Estimation of wood density, moisture content and fiber orientation by THz time domain spectroscopy Reviewed

Tetsuya Inagaki, Moe Kashima, Satoru Tsuchikawa

28th International Conference on Wood Science and Technology, ICWST 2017: Implementation of Wood Science in Woodworking Sector page： 3 - 6 2017

Authorship：Lead author,　Corresponding author Language：English Publishing type：Research paper (international conference proceedings) Publisher：University of Zagreb - Faculty of Forestry

Terahertz (THz) radiation has the potential to be a useful tool for sensing and imaging of wood because wood is relatively transparent at these frequencies (below about 1 THz). In this study, demonstration of simultaneous prediction of solid wood density, moisture content and fiber orientation, all of which are critical in manufacturing operations, of 14 species including softwood and hard wood was accomplished using terahertz time-domain spectroscopy (THz-TDS). THz measurements of wood at various moisture contents were taken for 19 orientations of the THz field (0-180o with 10o step) with respect to the visible grain. The real part of refractive index value and absorption cosfficient had strong correlation with density and moisture content of the wood. A strong correlation between measured and predicted values for density and moisture content were observed. The possibility for the estimation of fiber orientation using the birefringence property of wood were shown.

Scopus

NIR Spectral-kinetic analysis for thermally degraded Sugi (Cryptomeria japonica) wood Reviewed

Tetsuya Inagaki, Miyuki Matsuo and Satoru Tsuchikawa

Applied Physics A 2016

Effect of heat treatment on colour changes of black alder and beech veneers Reviewed

Salca, EA, Kobori, H, Inagaki, T, Kojima, Y, Suzuki, S

JOURNAL OF WOOD SCIENCE Vol. 622 page： 297-304 2016

Three-fibre-based diffuse reflectance spectroscopy for estimation of total solid content in natural rubber latex Reviewed

Tetsuya Inagaki Daisuke Nozawa, Yoshiaki Shimomura and Satoru Tsuchikawa,

Journal of Near infrared spectroscopy Vol. 24 page： 327-335 2016

Optical Properties of Drying Wood Studied by Time-Resolved Near-Infrared Spectroscop Reviewed

Konagaya K., Inagaki T., Kitamura R. and Tsuchikawa S

Optic Express Vol. 9 page： 9561-9573 2016

Fast online NIR technique to predict MOE and moisture content of sawn lumber Reviewed

Hikaru Kobori, Tetsuya Inagaki, Takaaki Fujimoto, Tsutomu Okura, Satoru Tsuchikawa

HOLZFORSCHUNG Vol. 69 ( 3 ) page： 329-338 2015.4

Combined effects of UV light and elevated temperatures on wood discolouration Reviewed

Laszlo Tolvaj, Satoru Tsuchikawa, Tetsuya Inagaki, Denes Varga

Vol. 49 ( 6 ) page： 1225-1237 2015

Visualisation of degree of acetylation in beechwood by near infrared hyperspectral imaging Reviewed

Tetsuya Inagaki, Katsuya Mitsui, Satoru Tsuchikawa

J. Near Infrared Spectrosc. Vol. 23 page： 353-360 2015

Simultaneous prediction of density and moisture content of wood by terahertz time domain spectroscopy Reviewed

Tetsuya Inagaki, Belal Ahmed, Ian D. Hartley, Satoru Tsuchikawa, Matthew Reid

J Infrared Milli Terahz Waves 2014

Assessment of variations in air-dry wood density using time-of-flight near-infrared spectroscopy Reviewed

GUILLAUME HANS, RYUNOSUKE KITAMURA, TETSUYA INAGAKI, BRIGITTE LEBLON & SATORU TSUCHIKAWA

Wood Material Science & Engineering 2014

High accuracy rapid prediction and feasibility of on-site nondestructive estimation of Para rubber quality by spectroscopic methods Reviewed

Tetsuya Inagaki, Panmanas Sirisomboon, Chang Liu, Warunee Thanapase, Satoru Tsuchikawa

Journal of Wood Science Vol. 59 page： 119-126 2013

Eucalyptus Camaldulensis Density and Fiber Length Estimated by Near Infrared Spectroscopy Reviewed

Tetsuya Inagaki, Manfred Schwanninger, Reina Kato, Yohei Kurata, Warunee Thanapase, Pratuang Puthson and Satoru Tsuchikawa

Wood Science and Technology 2012

Rapid Prediction of Past Climate Condition from Lake Sediments by Near-Infrared (NIR) Spectroscopy Reviewed

TETSUYA INAGAKI, YOSHITSUGU SHINOZUKA, KAZUYOSHI YAMADA, HITOSHI YONENOBU, AKIRA HAYASHIDA, SATORU TSUCHIKAWA, AKIHIROYOSHIDA, YASUHARU HOSHINO, KATSUYA GOTANDA, and YOSHINORI YASUDA

APPLIED SPECTROSCOPY Vol. 66 page： 673-679 2012

Near Infrared Spectroscopic Assessment of Contamination Level of Sewage Reviewed

etsuya Inagaki, Yukari Shinoda, Mitsuhiro Miyazawa, Hitoshi Takamura and Satoru Tsuchikawa

Water Science and Technology Vol. 61 page： 1957 2010

Near-Infrared Spectroscopic Investigation of the Hydrothermal Degradation Mechanism of Wood as an Analogue of Archaeological Objects. Part II: Hardwood Reviewed

Tetsuya Inagaki, Katsuya Mitsui and Satoru Tsuchikawa

Applied Spectroscopy Vol. 63 page： 753 2009

Monitoring of Hydroxyl Groups in Wood during Heat Treatment Using NIR Spectroscopy Reviewed

Katsuya Mitsui, Tetsuya Inagaki and Satoru Tsuchikawa

Biomacromolecules Vol. 9 page： 286 2008

Near-Infrared Spectroscopic Investigation of the Hydrothermal Degradation Mechanism of Wood as an Analogue of Archaeological Objects. Part I: Softwood Reviewed

Tetsuya Inagaki, Katsuya Mitsui and Satoru Tsuchikawa

Applied Spectroscopy Vol. 62 page： 1209 2008

Near-Infrared Spectroscopic Monitoring of the Water Adsorption/Desorption Process in Modern and Archaeological Wood Reviewed

Tetsuya Inagaki, Hitoshi Yonenobu and Satoru Tsuchikawa

Applied Spectroscopy Vol. 62 page： 860 2008

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