liquefaction

Numerical Analysis

System Identification

Acoustic Emission

Non Destructive Testing

Social infrastructure (civil Engineering, architecture, disaster prevention), Structural and seismic engineering, Structural Engineering, Earthquake Engineering, Maintenance Management Engineering

Social infrastructure (civil Engineering, architecture, disaster prevention), Geotechnical engineering, Soil Foundations Engineering

Social infrastructure (civil Engineering, architecture, disaster prevention), Civil engineering (materials, implementation, construction management), Civil Engineering Materials/Execution/Construction Management

Apr. 2016 - Present
College of Science and Technology, Nihon Univresity, Department of Civil Engineering, Professor

Apr. 2010 - Mar. 2016
College of Science and Technology, Nihon University, Department of Civil Engineering, Associate Professor

Apr. 2006 - Mar. 2010
College of Science and Technology, Nihon University, Department of Civil Engineering, Assistant Professor

Apr. 1997 - Mar. 2001
The University of Tokyo, Graduate School, Division of Engineering, Department of Civil Engineering

Apr. 1995 - Mar. 1997
Nihon University, Graduate School, Division of Science and Engineering, Department of Civil Engineering

01 Apr. 1991 - 31 Mar. 1995
Nihon University, College of Science and Technology, Department of Civil Engineering

Apr. 1991 - Mar. 1995
Nihon University, College of Science and Technology, Department of Civil Engineering

日本非破壊検査協会, 日本非破壊検査協会・学術奨励賞
Others

日本材料学会・第14回コンクリート構造物の補修, 補強, アップグレードシンポジウム・最優秀論文賞

地盤工学会・事業企画賞
Others

地盤工学会・国際会議若手優秀論文賞

Identifying Elastic Wave Velocity Distribution with Observation Arrival Time Errors Using Weighted Potential Time in Acoustic Emission Tomography
Mikika Furukawa; Katsuya Nakamura; Kenichi Oda; Satoshi Shigemura; Yoshikazu Kobayashi
Applied Sciences, Aug. 2024, Refereed
Last

Application of Classified Elastic Waves for AE Source Localization Based on Self-Organizing Map
Katsuya Nakamura; Yoshikazu Kobayashi; Kenichi Oda; Satoshi Shigemura
Applied Sciences, May 2023, Refereed
Corresponding

Classification of Elastic Wave for Non-Destructive Inspections Based on Self-Organizing Map
Katsuya Nakamura; Yoshikazu Kobayashi; Kenichi Oda; Satoshi Shigemura
SUSTAINABILITY, Mar. 2023, Refereed

Validation of Parameters Used in Identification of Elastic Wave Velocity Distribution Based on Acoustic Emission Tomography
Mikika Furukawa; Yoshikazu Kobayashi; Katsuya Nakamura; Kenichi Oda
2023 IEEE 5th Eurasia Conference on IOT, Communication and Engineering, ECICE 2023, 2023, Refereed

Soundness Evaluation of Thick Plate Structure Based on Pseudo 3D Acoustic Emission Tomography
Yoshikazu Kobayashi; Katsuya Nakamura; Kenichi Oda; Takahiro Nishida
2023 IEEE 5th Eurasia Conference on IOT, Communication and Engineering, ECICE 2023, 2023, Refereed
Lead

Improved Acoustic Emission Tomography Algorithm Based on Lasso Regression
Xin Qiao; Yoshikazu Kobayashi; Kenichi Oda; Katsuya Nakamura
APPLIED SCIENCES-BASEL, Nov. 2022, Refereed

Validation of elastic wave arrival detection method based on use of sparse matrix computation
K Nakamura; Y Kobayashi; K Oda; S Shigemura; K Ikebata
IOP Conference Series: Materials Science and Engineering, Apr. 2022, Refereed

New algorithm of Acoustic Emission Tomography that considers change of emission times of AE events during identification of elastic wave velocity distribution
Y. Kobayashi; K. Nakamura; K. Oda
11th International Conference on Bridge Maintenance, Safety and Management, 2022, Refereed
Lead

Evaluation of Unfilled Sheath in Concrete Structures Using Response Waveform in Time Domain
Kota Ikebata; Yoshikazu Kobayashi; Kenichi Oda; Katsuya Nakamura
Applied Sciences, Dec. 2021, Refereed, Not invited

Influence of the input frequency for soundness evaluation of concrete structure based on waveform analysis
Kota Ikebata; Yoshikazu Kobayashi; Kenichi Oda; Katsuya Nakamura
International Conference CIBv 2020 Civil Engineering and Building Services, IOP Conference Series: Materials Science and Engineering, Apr. 2021, Refereed, Not invited

Validation of AE tomography based on model tests of soil specimen with heterogeneous elastic wave velocity distribution
Katsuya Nakamura; Yoshikazu Kobayashi; Kenichi Oda; Satoshi Shigemura and Kota Ikebata
International Conference CIBv 2020 Civil Engineering and Building Services, IOP Conference Series: Materials Science and Engineering, Apr. 2021, Refereed, Not invited

Study on determination of an object material using the microwave doppler sensor
Kenichi Oda; Katsuya Nakamura; Kota Ikebata; Yoshikazu Kobayashi
International Conference CIBv 2020 Civil Engineering and Building Services, IOP Conference Series: Materials Science and Engineering, Apr. 2021, Refereed, Not invited
Last

時刻歴波形ノイズ部の実効電圧を用いた AE 到達時刻自動検出手法の開発
中村 勝哉; 小林 義和; 小田 憲一; 池端 宏太
土木学会論文集A2(応用力学), 2021, Refereed, Not invited

時系列応答波形を用いた矩形断面構造物の内部欠陥探査
Kota IKEBATA; Yoshikazu KOBAYASHI; Kenichi ODA; Katsuya NAKAMURA
コンクリート構造物の補修, 補強, アップグレード論文報告集, Oct. 2020, Refereed, Not invited

Inverse Simulation for Extracting the Flow Characteristics of Artificial Snow Avalanches Based on Computation Fluid Dynamics
Kenichi Oda; Katsuya Nakamura; Yoshikazu Kobayashi; Jun-ichi Suzumura
Geosciences, Jun. 2020, Refereed

AEトモグラフィ法における弾性波の発信位置同定手法の改良
小林 義和
コンクリート構造物の非破壊検査シンポジウム論文集, Aug. 2018, Refereed, Not invited
Lead

A Source Localization Technique Based on a Ray-Trace Technique with Optimized Resolution and Limited Computational Costs
Kobayashi; Y.; Oda; K.; Nakamura; K.
proceedings, Jul. 2018, Refereed, Not invited

Source location algorithm with controlled resolution based on ray-trace technique
Kobayashi; Y.; Oda; K.; Tamura; Y.; Fuse; T.; Shiotani; T.
Proceedings of Second International RILEM/CONST Conference on Early Age Cracking and Serviceability in Cement-based Materials and Structures, Sep. 2017, Refereed, Not invited
Lead

Damage evaluation of RC bridge deck under wheel loading test by means of AE Tomography
Takahiro Nishida; Tomoki Shiotani; Hirofumi Asaue; T. Maeshima; Yoshikazu Kobayashi
IAES-23 & IIIAE 2016 Kyoto & ICAE-8, Kyoto, Dec. 2016, Refereed, Not invited

Evaluation of grouting condition of prestressing reinforcement by means of wave velocity tomography
Artur Sagradyan; Tomoki Shiotani; Takahiro Nishida; Hirofumi Asaue; Yoshikazu Kobayashi
IAES-23 & IIIAE 2016 Kyoto & ICAE-8, Dec. 2016, Refereed, Not invited

Damage evaluation for In-field RC bridge deck by AE Tomography
M. Fukuda; Tomoki Shiotani; Takahiro Nishida; Hirofumi Asaue; Yoshikazu Kobayashi
IAES-23 & IIIAE 2016 Kyoto & ICAE-8, Dec. 2016, Refereed, Not invited

Evaluation of water leakage repair by one side access elastic wave tomography using Rayleigh wave
Hirofumi Asaue; Tomoki Shiotani; Takahiro Nishida; C. Huang
IAES-23 & IIIAE 2016 Kyoto & ICAE-8, Dec. 2016, Refereed, Not invited

Development of elastic wave tomography method for evaluation of internal concrete using drilling holes
Hitoshi Yatsumoto; Takahiro Nishida; Tomoki Shiotani; C. Huang; Norihiko Ogura; Yoshikazu Kobayashi
IAES-23 & IIIAE 2016 Kyoto & ICAE-8, Dec. 2016, Refereed, Not invited

Three-dimensional Q-Value AE-Tomography ad its verification on numerical investigations
Yoshikazu Kobayashi; Tomoki Shiotani
IAES-23 & IIIAE 2016 Kyoto & ICAE-8, Dec. 2016, Refereed, Not invited
Lead

Two-dimesional Q-Value AE-Tomography and its verification on numerical investigations
Yoshikazu Kobayashi; Tomoki Shiotani
32nd Conference of the European Working Group on Acoustic Emission, Sep. 2016, Refereed, Not invited
Lead

Hybrid elastic-wave CT with impact acoustics for single-side measurement in concrete structures
Tomoki Shiotani; Yoshikazu Kobayashi; Kai-Chun Chang
CONSTRUCTION AND BUILDING MATERIALS, Jun. 2016, Refereed, Not invited

Two-dimensional Q Value Tomography and its verification on numerical investigations
Yoshikazu Kobayashi; Tomoki Shiotani
Structural Faults and Repair 2016, May 2016, Refereed, Not invited
Lead

Development of a tomography technique for assessment of the material condition of concrete using optimized elastic wave parameters
Hwa-Kian Chai; Kit-Fook Liu; Arash Behnia; Yoshikazu Kobayashi; Tomoki Shiotani
Materials, Apr. 2016, Not refereed, Not invited

Verification of fluid velocity variation in incorporation of avalanche
Yamada Masatoshi; Oda Kenichi; Kobayashi Yoshikazu; Kamiishi Isao
Summaries of JSSI and JSSE Joint Conference on Snow and Ice Research, 2016

Study of detecting for snow density using AE characteristics
Oda Kenichi; Kobayashi Yoshikazu; Kamiishi Isao
Summaries of JSSI and JSSE Joint Conference on Snow and Ice Research, 2016

Two-dimensional AE-Tomography based on ray-trace technique for anisotropic materials
Yoshikazu Kobayashi; Tomoki Shiotani
Emerging Technologies in Non-Destructive Testing VI, Dec. 2015, Refereed, Not invited
Lead

Verification of Composite AE-Tomography on Varying Anisotropy of Elastic Wave Velocity
Yoshikazu Kobayashi; Tomoki Shiotani
Proceedings of The 7th Asia and Pacific Young Researchers and Graduates Symposium, Aug. 2015, Refereed, Not invited

Feasibility of Elastic Wave Parameters for Tomographic Assessment of PC Tendon Duct Filling
Liu; K.F.; Kobayashi; T.; Chai; H.K.; Shiotani; T.; Yuen; C.W.
Proceedings of The 7th Asia and Pacific Young Researchers and Graduates Symposium, Aug. 2015, Refereed, Not invited

Verification of Source Location Accuracy by AE-Tomography
Momoki; S.; Kobayashi; T.; Shiotani; T.
The 22nd International Acoustic Emission Symposium, Nov. 2014, Refereed, Not invited

Damage Visualization of Rock Material in Triaxial Compression Test with 3D-AE Tomography
Osawa; T.; Shiotani; T.; Momoki; S.; Kobayashi; Y.
The 22nd International Acoustic Emission Symposium, Nov. 2014, Refereed, Not invited

Two-dimensional Source Location Technique on Anisotropic Medium on the Basis of Ray-tracing
Kobayashi; Y.; Shiotani; T.
The 22nd International Acoustic Emission Symposium, Nov. 2014, Refereed, Not invited
Lead

弾性波トモグラフィ法によるPC構造物の健全性評価に関する研究
5) 桃木 昌平; 塩谷 智基; 小林 義和
プレストレストコンクリート工学会・第23回シンポジウム論文集, Oct. 2014, Refereed, Not invited

打音検査を利用する弾性波トモグラフィ計測技術の開発
桃木 昌平; 塩谷 智基; 小林 義和; 水谷 麻起子
第14回コンクリート構造物の補修, 補強, アップグレードシンポジウム, Oct. 2014, Refereed, Not invited

Application of 3D AE Tomography for Triaxial Tests of Rocky Specimens
Shiotani; T.; Osawa; S.; Kobayashi; T.; Momoki; S.
31st Conference of the European Working Group on Acoustic Emission, Sep. 2014, Refereed, Not invited

System Identification for Three-dimensional AE-Tomography with Kalman Filter
Kobayashi; Y.; Shiotani; T.; Oda; K.
31st Conference of the European Working Group on Acoustic Emission, Sep. 2014, Refereed, Not invited

Development of Tomography Reconstruction Techniques for Concrete Using Elastic Wave Time and Frequency Domain Parameters
Liu; K. F.; Chai; H. K.; Kobayashi; Y.; Shiotani; T.
The 6th Asia and Pacific Young Researchers and Graduates Symposium, Aug. 2014, Refereed, Not invited

Two-dimensional ray-trace technique for anisotropic materials
Kobayashi; Y.; Shiotani; T.; Oda; K.
The 6th Asia and Pacific Young Researchers and Graduates Symposium, Aug. 2014, Refereed, Not invited

Three-dimensional AE-Tomography with accurate source location technique
Kobayashi; Y.; Shiotani; T.; Oda; K.
Structural Faults and Repair 2014, Jul. 2014, Refereed, Not invited
Lead

Condition Assessment of PC Tendon Duct Filling by Elastic Wave Velocity Mapping
Kit Fook Liu; Hwa Kian Chai; Nima Mehrabi; Kobayashi Yoshikazu; Tomoki Shiotani
SCIENTIFIC WORLD JOURNAL, 2014, Refereed, Not invited

Mesh-independent ray-trace algorithm for concrete structure
Y. Kobayashi
CONSTRUCTION AND BUILDING MATERIALS, Nov. 2013, Refereed, Not invited

EFFECTS OF NUMBER OF EVENTS AND RELAY POINT DENSITY ON ACCURACY OF THREE-DIMENSIONAL AE-TOMOGRAPHY
Kobayashi; Y.; Shiotani; T.; Oda; K.
The 5th Asia and Pacific Young Researchers and Graduates Symposium, Oct. 2013, Refereed, Not invited
Lead

ASSESSMENT OF INFRASTRUCTURES BY MEANS OF PASSIVE AND POSITIVE ELASTIC WAVES APPROACHES
Shiotani; T.; Kobayashi; Y.; Momoki; S.
12th International Conference of the Slovenian Society for Non-Destructive Testing, Sep. 2013, Refereed, Not invited

Large-scale evaluation of concrete repair by three-dimensional elastic-wave based visualization technique
Momoki; S.; Shiotani; T.; Chai; H. K.; Aggelis; D. G.; Kobayashi; Y.
Structural Health Monitoring, May 2013, Refereed, Not invited

System identification with the kalman filter in ray-trace based AE-Tomography
T. Shiotani
The First International Conference on Performance-based and Life-cycle Structural Engineering(CD), Dec. 2012, Refereed, Not invited
Lead

Application of AE Tomography for fracture visualization of rock material
Iwamoto; K.; T. Shiotani; S. Momoki
JSNDI, Progress in Acoustic Emission XVI, Oct. 2012, Refereed, Not invited

Basic study on application of discrete element method for slope failure analysis
Y. Kawamura
15th World Conference on Earthquake Engineering(CD), Sep. 2012, Refereed, Not invited

Seismic Tomography with Estimation of Source Location for Concrete Structures
Tomoki Shiotani
tructural Faults and Repair 2012(CD), Jul. 2012, Refereed, Not invited
Lead

Three-dimensional seismic tomography with tetrahedra element on isoparametric mapping
Yoshikazu Kobayashi
International Journal of Structural Engineering, Jan. 2012, Refereed, Not invited

Mesh-independent ray-trace algorithm for concrete structures
PROCEEDINGS OF THE FIFTH CONFERENCE ON EMERGING TECHNOLOGIES IN NDT(CD), Sep. 2011, Refereed, Not invited
Lead

Numerical simulation of elastic waves for visualization of defects
D.G. Aggelis; N. Tsimpris; H.K. Chai; T. Shiotani
Construction and Building Materials, Apr. 2011, Refereed, Not invited

三次元弾性波トモグラフィによるコンクリート構造物の健全性評価
桃木 昌平; 蔡 華堅; 塩谷 智基; 宮永孝志
構造工学論文集, Apr. 2011, Refereed, Not invited

Tomographic reconstruction for concrete using attenuation of ultrasound
3) H.K. Chai; S. Momoki; D.G. Aggelis; T. Shiotani
NDT&E International, Mar. 2011, Refereed, Not invited

Parametric analysis of thermal stress of concrete gravity dam
2) Tatsuro Sakurai; Hiroo Shiojiri
Proceeding of 6th International Conference on Dam Engineering(CD), Feb. 2011, Refereed, Not invited

Single-side access tomography for evaluating interior defect of concrete
H.K. Chai; D.G. Aggelis; S. Momoki; T. Shiotani
Construction and Building Materials, Dec. 2010, Refereed, Not invited

Solid-Fluid Interaction Analysis with Compulsory Displacement by Smoothed Particle Hydrodynamics
Takaaki FUSE
Proceedings of the Twelfth International Summer Symposium, Sep. 2010, Refereed, Not invited

THREE-DIMENSIONAL SEISMIC TOMOGRAPHY FOR EXISTING STRUCTURES ON EXTENDED KALMAN FILTER
STRUCTURAL FAULTS AND REPAIR-2010(CD), Jun. 2010, Refereed, Not invited
Lead

ZERO-GRAVITY TRIAXIAL SHEAR TESTS ON MECHANICAL PROPERTIES OF LIQUEFIED SAND AND PERFORMANCE ASSESSMENT OF MITIGATIONS AGAINST LARGE GROUND DEFORMATION
Ikuo Towhata; Trinh Thi Lan Anh; Suguru Yamada; Ramin Motamed
Fifth International Conference on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics, May 2010, Refereed, Not invited

Recent development in tomoraphy techniques for non-destructive evaluation of concrete
Chai HK; Momoki S; Aggelis DG; Kobayashi Y. and Shiotani T
Proceedings of the Second Asia-Pasific Young Researchers and Graduates Symposium, Mar. 2010, Refereed, Not invited

THREE-DIMENSIONAL SEISMIC TOMOGRAPHY WITH TETRAHEDRAL ELEMENT ON ISOPARAMETRIC MAPPING
Yoshikazu Kobayashi
Proceedings of the Second Asia-Pasific Young Researchers and Graduates Symposium, Mar. 2010, Refereed, Not invited
Lead

Hybrid method of MPS and FEM for uplift analysis of embedded structures in liquefied ground
Proceedings of APCOM'07-EPMESC XI(CD), Dec. 2007, Refereed, Not invited
Lead

Three-Dimensional Seismic Tomography for Existing Concrete Structures
Tomoki Shiotani; Dimitrios G. Aggelis; Hiroo Shiojiri
International Operational Modal Analysis Conference 2007, May 2007, Refereed, Not invited
Lead

DAMAGE IDENTIFICATION USING SEISMIC TRAVEL TIME TOMOGRAPHY ON THE BASIS OF EVOLUATIONAL WAVE VELOCITY DISTRIBUTION
Yoshikazu Kobayashi; Tomoki Shiotani; Hiroo Shiojiri
STRUCTURAL FAULTS AND REPAIR-2006(CD), Jun. 2006, Refereed, Not invited
Lead

Deformation analysis of liquefied ground by particle method
Kobayashi Yoshikazu
Geotechnical symposium in Rome(CD), Mar. 2006, Refereed, Not invited
Lead

有限要素法地震応答解析:ケーススタディに見る長所と問題点
吉田 望; 船原 英樹; 小林 義和; 小林 恒一
土と基礎, Aug. 2005, Refereed, Not invited

Three dimensional analysis on lateral flow of liquefied ground and its mitigation by sheet pile walls
I. Towhata
International Journal on Computational Fluid Dynamics, Jan. 2005, Refereed, Not invited
Lead

矢板護岸及び杭基礎を含む液状化地盤を対象とした大型振動台模型実験の有効応力解析
川口和広; 大矢陽介; 丸山拓哉; 小林義和; 佐藤正義
液状化地盤中の杭の挙動と設計法に関するシンポジウム発表論文集, Dec. 2004, Refereed, Not invited

Three-dimensional Analysis on Subsidence of Shallow Foundation resting on Liquefied Ground
Yoshikazu Kobayashi; Ikuo Towhata
Thirteenth World Conference on Earthquake Engineering Conference Proceedings(CD), Aug. 2004, Refereed, Not invited
Lead

Numerical Study on Lateral Spreading of Liquefied Ground behind a Sheet pile Model in a Large Scale Shake Table Test
Masoud Mohajeri; Yoshikazu Kobayashi; Kazuhiro Kawaguchi; Masayoshi Sato
Thirteenth World Conference on Earthquake Engineering Conference Proceedings(CD), Aug. 2004, Refereed, Not invited

粘性流体モデルによる地盤の流動解析とその検証
小林 義和; 東畑 郁生
土木学会論文集, Jun. 2004, Refereed, Not invited
Lead

粘性流体モデルによる送電鉄塔の三次元沈下予測
小林 義和; 東畑 郁生
土木学会地震工学論文集VOL.27（CD）, Dec. 2003, Refereed, Not invited
Lead

粘性流体モデルによる液状化時の地下埋設構造物浮上解析
小林 義和; 東畑 郁生
第48回地盤工学シンポジウム論文集(CD), Nov. 2003, Refereed, Not invited
Lead

地盤の側方境界が地中構造物の浮き上がりに与える影響
川口 和広; 吉田 望; 小林 義和; 村上 正明
第48回地盤工学シンポジウム論文集(CD), Nov. 2003, Refereed, Not invited

2 and 3-Dimensional Dynamic Analysis of Large Defor-mation of Liquefied Ground
Y. Kobayashi; S. Nishimura
Proceeding of the Twelfth Asian Regional Conference on Soil Mechanics and Geotechnical Engineering(CD), Aug. 2003, Refereed, Not invited
Lead

Identification of Dynamic Model of RC Building
ABDULLA Abrikim; SHIOJIRI Hiroo; KOBAYASHI Yoshikazu
Peoceedings of The 5th International Conference on Civil Engineering The 3rd Pacific Asia Conference on Mechanical Engineering(CD), Aug. 2002, Refereed, Not invited

液状化地盤の流動変位の三次元大変形動的解析
小林 義和
土と基礎 側方変位・流動の予測と対策特集号, Feb. 2002, Refereed, Not invited
Lead

SUBSIDENCE OF BUILDING FOUNDATION RESTING UPON LIQUEFIED SUBSOIL; CASE STUDIES AND ASSESSMENT
Acacio A. A.; Kobayashi Y; Towhata I.; Bautista R. T.; Ishihara K
SOILS AND FOUNDATIONS, Dec. 2001, Refereed, Not invited

ANALYSIS ON LIQUEFACTION-INDUCED SUBSIDENCE OF SHALLOW FOUNDATION
Yoshikazu Kobayashi; Ikuo Towhata; Alexis A. Acacio
Proceedings of the seventh U.S.-Japan Workshop on Earthquake Resistant Design of Lifeline facilities and Counter measures Against Soil liquefaction, Nov. 1999, Refereed, Not invited
Lead

Shaking table tests on seismic earth pressure exerted on retaining wall model
K.Watanabe; T.Maeda; Y.Kobayashi; I.Towhata
Proceedings of the Second International Conference on Earthquake Geotechnical Engineering, Jun. 1999, Refereed, Not invited

地盤の液状化による基礎の沈下解析
小林 義和; 東畑 郁生; ALEXIS A. ACACIO; 野村 卓史
地震時の地盤・土構造物の流動性と永久変形に関するシンポジウム発表論文集, May 1998, Refereed, Not invited
Lead

弾性波による地盤物性の同定
小林 義和; 塩尻 弘雄
構造工学論文集, Mar. 1998, Refereed, Not invited
Lead

IDENTIFICATION OF SOIL PROPERTIES FROM WAVE MOTION OF GROUND
Hiroo Shiojiri; Yoshikazu Kobayashi
Structual safety and Reliability, 1997, Refereed, Not invited

時系列応答波形の変化量（差分値）を指標としたコンクリート構造物の内部欠陥評価
池端宏太,小林義和,小田憲一,中村勝哉
「超音波テクノ」特集 超音波等を適用したプラントの保守検査, 01 Feb. 2022, Not refereed, Not invited

Development of Elastic Wave Tomography Measurement Technology that uses Hammering Test
桃木 昌平; 塩谷 智基; 小林 義和
とびしま技報, 2014

Innovative AE and NDT Techniques for On-Site Measurement of Concrete and Masonry Structures
F. Accorner; D.G. Aggelis; A. Carpinteri; C.U. Grosse; Y. Kobayashi; G. Lacidogna; T. Shiotani, Joint work, Computerized AE Tomography, F. Accorner; D.G. Aggelis; A. Carpinteri; C.U. Grosse; Y. Kobayashi; G. Lacidogna; T. Shiotani
Springer, 2016, Not refereed

VBAによるプログラミングの理解と実際 —演習：地球環境化学系問題—VBAによるプログラミングの理解と実際 —演習：地球環境化学系問題—
鈴村 順一; 相馬 直孝; 小林 義和; 西川 貴雄; 栃木 勝己; 久保田 進, Joint work, 鈴村 順一; 相馬 直孝; 小林 義和; 西川 貴雄; 栃木 勝己; 久保田 進
化学工業社, Mar. 2013, Not refereed
9784759400021

Pseudo three-dimensional acoustic emission tomography considering change of ray-path in thickness direction
Yoshikazu Kobayashi; Katsuya Nakamura; Mikika Furukawa; Kenichi Oda
12th Annual Conference of Society for Structural Integrity and Life, Nov. 2024, Not invited

Damage Progression of CFRP by Means of Acoustic Emission Analysis
Takahiro Nishida; Yoshikazu Kobayashi
15th Annual Symposium of Indian Scientists Association in Japan (ISAJ) Transformative Technologies for a Sustainable Future, Oct. 2024, Invited

Implementation of three-dimensional effects in tomographic techniques using elastic waves based on ray-tracing for plate-like structures
Yoshikazu Kobayashi; Katsuya Nakamura; Mikika Furukawa; Kenichi Oda; Takahiro Nishida
15th Annual Symposium of Indian Scientists Association in Japan (ISAJ) Transformative Technologies for a Sustainable Future, Oct. 2024, Invited

AE位置標定の精度向上を目的とした自己組織化マップに基づくAE波の分類に関する検討
斉藤隆太; 古川 樹花; 中村 勝哉; 小田 憲一; 小林 義和
公益社団法人土木学会・令和6年度土木学会全国大会第79回年次学術講演会, Sep. 2024

Improvement of AE source localization considering heterogeneous velocity distributions based on self-organizing map and k-means algorithm
Katsuya Nakamura; Yoshikazu Kobayashi; Kenichi Oda; Satoshi Shigemura
18th International Scientific Conference CIBv2023, Nov. 2023

Soundness evaluation of thick plate structure based on Pseudo 3D Acoustic Emission Tomography
Yoshikazu Kobayashi
18th International Scientific Conference CIBv2023, Nov. 2023, Invited

AEトモグラフィ法を用いた弾性波速度分布の同定における解析パラメータの妥当性検討
古川 樹花; 小林 義和; 中村 勝哉; 小田 憲一
公益社団法人土木学会・第26回応用力学シンポジウム, May 2023

Acoustic Emission Tomography that considers change of emission times of AE events during identification of elastic wave velocity distribution with least square approach
Yoshikazu Kobayashi
17th International Scientific Conference CIBv2022, Nov. 2022, Invited

AE トモグラフィ法を用いた弾性波速度分布の同定における入力誤差とセンサ配置に関する検討
黒田 啓央; 小林義和; 中村勝哉; 小田憲一
一般社団法人日本非破壊検査協会・2022年度秋季講演大会, Oct. 2022

AEトモグラフィ法を用いた弾性波速度分布の同定における入力値誤差の影響に関する検討
黒田 啓央; 小林 義和; 中村 勝哉; 小田 憲一
令和4年度全国大会第77回年次学術講演会, Sep. 2022

Development of AE Sources Localizations Method based on Use of Ray-Tracing for Optimizing Computation Times
Katsuya Nakamura; Yoshikazu Kobayashi; Kenichi Oda; Satoshi Shigemura
3rd International Symposium on Risk Assessment and Sustainable Stability Design of Slopes, Mar. 2022

AE 到達時刻の検出を目的とした SOM による AE 波のクラスタリング
王 哲杰; 小林義和,小田憲一,中村勝哉
2021年度秋季講演大会, Nov. 2021, 一般社団法人日本非破壊検査協会, Not invited

AE トモグラフィ法によって同定された弾性波速度分布に基づく構造物の性能照査
海野 征久; 小林義和,小田憲一,中村勝哉
2021年度秋季講演大会, Nov. 2021, 一般社団法人日本非破壊検査協会, Not invited

ニューラルネットワークを用いた弾性波到達時刻自動検出手法
北沢 大樹; 小林義和,小田憲一,中村勝哉
2021年度秋季講演大会, Nov. 2021, 一般社団法人日本非破壊検査協会, Not invited

Current problem and challenge on Acoustic emission tomography
Yoshikazu KOBAYASHI
INTERNATIONAL CONFERENCE CIBv2021CIVIL ENGINEERING AND BUILDING SERVICES, Nov. 2021, Transylvania University of Brasov, Invited

Improvement of source localization technique in AE-Tomography
Yoshikazu KOBAYASHI
INTERNATIONAL CONFERENCE CIBv2021CIVIL ENGINEERING AND BUILDING SERVICES, Nov. 2020, Transylvania University of Brasov, Invited

数値計算によって生成された時系列応答波形によるコンクリート板の内部欠陥評価の検討
池端 宏太; 小林義和,小田憲一,中村勝哉
2020度秋季講演大会, Oct. 2020, 一般社団法人日本非破壊検査協会, Not invited

AEトモグラフィ法における同定対象パラメータの拘束条件の影響
中村 勝哉; 小林 義和; 小田 憲一; 池端 宏太
令和2年度全国大会・第75回年次学術講演会, Sep. 2020, 公益社団法人土木学会, Not invited

AEトモグラフィ法による地盤の進行性破壊評価手法の検討
中村 勝哉; 小林 義和; 小田 憲一; 池端 宏太
第47回土木学会関東支部技術研究発表会, Mar. 2020, 公益社団法人土木学会関東支部, Not invited

Numerical investigations on the characteristics of Acoustic Emission Tomography for the soundness evaluation of the bridge decks
Yoshikazu Kobayashi; Takahiro NIshida; Katsuya Nakamura; Kenichi Oda; Junichi Suzumura
Asian Pacific Congress on Computational Mechanics 2019(APCOM2019), Dec. 2019, Not invited

[MS1403C] Advances in Computational Methods in Infrastructure Systems and Engineering
Asian Pacific Congress on Computational Mechanics 2019(APCOM2019), Dec. 2019, Not invited

Development of Reverse Simulation for extracting viscosity characteristics of the Avalanche
Kenichi Oda; Katsuya Nakamura; Yoshikazu Kobayashi
Asian Pacific Congress on Computational Mechanics 2019(APCOM2019), Dec. 2019, Not invited

AEトモグラフィ法における弾性波速度上限の影響
小林義和,中村勝哉,小田憲一
2019年度秋季講演大会, Nov. 2019, 一般社団法人日本非破壊検査協会, Not invited

Nondestructive testing based on elastic wave methods,for infrastructures
Yoshikazu KOBAYASHI
INTERNATIONAL CONFERENCE CIBv2019 CIVIL ENGINEERING AND BUILDING SERVICES, Nov. 2019, Transylvania University of Brasov, Invited

時系列応答波形を用いたコンクリート構造物の内部空洞の,評価
池端 宏太; 小林 義和; 小田 憲一
令和元年度全国大会・第74回年次学術講演会, Sep. 2019, 公益社団法人土木学会, Not invited

三次元空間における異方性を考慮したAE位置標定法
小林 義和,Lin Wenli,古関 潤一,中村 勝哉, 小田 憲一,重村 智,前野 賀彦
第65回理論応用力学講演会, Jun. 2019, 公益社団法人土木学会, Not invited

応答波形による内部欠陥探査に関する基礎的検討
池端 宏太,小林 義和; 小田 憲一
平成30年度秋季講演大会, Nov. 2018, 一般社団法人日本非破壊検査協会, Not invited

Performance improvements of AE-Tomography
Kobayashi; Y.
Innovative Non-destructive testing for civil engineers, Nov. 2017, Advanced Technology Institute of Infra-Maintainance, Not invited

Acoustic Emission Tomography for soundness evaluation of concrete structures
Yoshikazu Kobayashi
INTERNATIONAL CONFERENCE CIBv2017 CIVIL ENGINEERING AND BUILDING SERVICES, Nov. 2017, Transilvania University of Brasov, Invited

三次元弾性波トモグラフィー法を用いた内部欠陥探査の実験的検討
関根 義夫; 池端 宏太; 小林 義和
平成29年度秋季講演大会, Oct. 2017, 一般社団法人日本非破壊検査協会, Not invited

Accuracy of identified source locations on source location techniques for AE testing
Tamura; Y.; Oe; T.; Oda; K.; Kobayashi; Y.
6th International Conference on Civil Engineering, Aug. 2017, Nihon University and Technical University of the Philippines, Not invited

Source location technique with controlled resolution based on ray-trace technique
Kobayashi; Y.; Oda; K.; Tamura; Y.; Fuse; T.; Shioani; T.
59th Meeting of the Acoustic Emission Working group, May 2017, Acoustic Emission Working group, Not invited

構造物の健全性診断を対象とした二次元Q値AEトモグラフィ法の開発
小林 義和; 塩谷 智基
平成28年度秋季講演大会, Oct. 2016, 一般社団法人日本非破壊検査協会, Not invited

Conservation of mechanical energy in incompressible flow analysis with elastic bodies on the basis of HMPS
Katsuya Nakamura; Yoshikazu Kobayashi; Kenichi Oda; Jun-ichi Suzumura
The 12th World Congress on Computational Mechanics and The 6th Asia-Pacific Congress on Computational Mechanics, Jul. 2016, Not invited

AE-Tomography for identifying Q-Value and elastic wave velocity distributions
Yoshikazu Kobayashi; Tomoki Shiotani
58th meeting of ACOUSTIC EMISSION WORKGROUP, May 2016, Not invited

Characteristic of neutron beam permeability to concrete
Yoshikazu Kobayashi; Takumi Ishitsuka; Yusuke Namiki; Kenichi Oda; Masayuki Watanabe
KSMI 2016 Spring Conference, Apr. 2016, Not invited

異方性材料を対象としたAE トモグラフィにおける速度異方性の影響
小林 義和; 塩谷 智基
第20回AE総合コンファレンス, Nov. 2015, 非破壊検査協会, Not invited

構造物の健全性診断を対象としたQ値トモグラフィ法の開発
小林 義和; 塩谷 智基
平成27年度秋季講演大会, Oct. 2015, 非破壊検査協会, Not invited

AEトモグラフィによる実橋梁から採取したCFRPの引張破壊進展の評価
西田 孝弘; 塩谷 智基; 小林 義和; 麻植 久史; 中山 宏
平成27年度秋季講演大会, Oct. 2015, 非破壊検査協会, Not invited

異方性材料を対象としたAEトモグラフィ法の開発
小林 義和; 塩谷 智基
第70回年次学術講演会, Sep. 2015, 土木学会, Not invited

Two-dimensional elastic wave velocity tomography and AE-Tomography for anisotropic materials
Kobayashi; Y.; Shiotani; T.
57th meeting of ACOUSTIC EMISSION WORKGROUP, Jun. 2015, Acoustic Emission Workgroup, Not invited

三次元AEトモグラフィによる岩石供試体の損傷可視化
大澤 智; 塩谷 智基; 桃木 昌平; 小林 義和
非破壊検査協会・平成26年度秋季講演大会, Oct. 2014, Not invited

波線追跡法に基づく三次元AEトモグラフィ法の開発
小林 義和; 塩谷 智基
非破壊検査協会・平成26年度秋季講演大会, Oct. 2014, Not invited

繊維補強コンクリートの曲げ試験におけるAEトモグラフィの解析
奥出 信博; 塩谷 智基; 桃木 昌平; 小林 義和
非破壊検査協会・平成26年度春期講演大会, Jun. 2014, Not invited

AEトモグラフィ法の開発 –その2 模擬欠陥コンクリート試験体による検証−
桃木 昌平; 小林 義和; 塩谷 智基
非破壊検査協会・平成26年度春季講演大会, Jun. 2014, Not invited

AEトモグラフィ法の開発 –その1 二次元問題を対象としたアルゴリズムの開発−
小林 義和; 塩谷 智基; 桃木 昌平; 小田 憲一
非破壊検査協会・平成26年度春季講演大会, Jun. 2014, Not invited

Damage visualization of rock material in triaxial compression test with 3D-AE tomography
Osawa; S.; Shiotani; T.; Momoki; S.; Kobayashi; Y.
56th meeting of ACOUSTIC EMISSION WORKGROUP, Jun. 2014, Not invited

Promising damage index with using transfer function of multiple AE waveforms for infra-asset management
Shiotani; T.; Takada; T.; Ishitsuka; K.; Kobayashi; Y.
56th meeting of ACOUSTIC EMISSION WORKGROUP, Jun. 2014, Not invited

Two-dimensional ray-trace technique for anisotropic materials
Kobayashi; Y.; Shiotani; T.
56th meeting of ACOUSTIC EMISSION WORKGROUP, Jun. 2014, Not invited

AE法と弾性波トモグラフィ法による鉄筋コンクリート床版の健全性評価に関する検討
奥出 信博; 塩谷 智基; 小林 義和; 桃木 昌平
第19回アコースティック・エミッション総合コンファレンス, Dec. 2013, Not invited

インフラアセットモニタリングのためのAEトモグラフィの開発 〜その2 交通荷重AEの適用〜
大澤 智; 塩谷 智基; 桃木 昌平; 小林 義和
第19回アコースティック・エミッション総合コンファレンス, Dec. 2013, Not invited

インフラアセットモニタリングのためのAEトモグラフィの開発 〜その1 アルゴリズムの構築〜
桃木 昌平; 小林 義和; 塩谷 智基
第19回アコースティック・エミッション総合コンファレンス, Dec. 2013, Not invited

GISによる液状化ハザードマップの作成に関する基礎的検討
小野 幹; 小田 憲一; 小林 義和
第48回地盤工学研究発表会, Jul. 2013, Not invited

Three-dimensional verification of AE tomography algorithm
Kobayashi Y.; Shiotani T.
55th meeting of ACOUSTIC EMISSION WORKGROUP, Jun. 2013, Not invited

Numerical verification of AE tomography algorithm with new AE source location technique
Kobayashi Y.; Shiotani T.
54th meeting of ACOUSTIC EMISSION WORKING GROUP, May 2012, Not invited

AE トモグラフィーによるインフラ構造物の健全性評価手法の提案
塩谷 智基; 奥出 信博; 桃木 昌平; 小林 義和
第18回アコースティック・エミッション総合コンファレンス, Sep. 2011, Not invited

Ray-trace algorithm for concrete structures and its application for output-output tomography
Kobayashi Y.
3rd Meeting, TC-239MCM, RILEM, Sep. 2011, Not invited

Tomography imaging of concrete by surface wave
蔡 華堅; Dimitrios G. Aggelis; 桃木 昌平; 小林 義和; 塩谷 智基
土木学会第65回年次学術講演会, Sep. 2010, Not invited

弾性波減衰特性を用いた内部損傷可視化技術の開発
桃木 昌平; 蔡 華堅; 塩谷 智基; 小林 義和
土木学会・第64回年次学術講演会, Sep. 2009, Not invited

粒子法に基づく地盤の変形解析に関する基礎的検討
小林 義和
第44回地盤工学研究発表会, Aug. 2009, Not invited

Three-dimensional seismic tomography for soundness evaluation of concrete structures
Kobayashi Y.
1st Asia Pacific Young Researchers and Graduates Symposium, Feb. 2009, Invited

粒子法と有限要素法の混合法による液状化地盤中の埋設構造物を対象とした浮上解析
第43回地盤工学研究発表会, Jul. 2008, Not invited

Development of boundary condition of MPS and FEM for liquefaction analysis
2nd Int'l Workshop on Numerical Simulation for Disastrous Phenomena, Jan. 2008, Not invited

学生情報データベースの作成とその活用
野村 卓史; 岸井 隆幸
平成19年度工学・工業教育研究講演会, Aug. 2007, Not invited

二相系を考慮した粒子法における重み関数の影響
第42回地盤工学研究発表会, Jul. 2007, Not invited

粘性流体モデルに基づく液状化地盤と杭の相互作用の相互作用解析
Motamed Ramin; Vlatko Sesov; 東畑 郁生
第12回計算工学講演会, May 2007, Not invited

固相と液相の相互作用を考慮した粒子法による地盤の変形解析
小林 義和
第3回地盤工学会関東支部研究発表会発表講演集, Nov. 2006, Not invited

座長(土木学会第61回年次学術講演会)
土木学会, Sep. 2006, Not invited

相変化を考慮したMPSによる液状化解析
小林 義和
第41回地盤工学研究発表会, Jul. 2006, Not invited

座長(第60回土木学会年次学術講演会)
土木学会, Sep. 2005, Not invited

粒子法による液状化地盤の変形解析
小林 義和
第40回地盤工学研究発表会, Jul. 2005, Not invited

地盤構造物の液状化対策に関する遠心模型実験と流動対策の評価
佐藤 宏樹; 本多 剛; Alam M.J.; 東畑 郁生; 玉手 聡; 田中 智宏; 小林 義和
第40回地盤工学研究発表会, Jul. 2005, Not invited

粘性流体モデルに基づく矢板による液状化地盤流動低減
小林 義和; 東畑 郁生
第39回地盤工学研究発表会, Jul. 2004, Not invited

座長(第39回地盤工学研究発表会)
地盤工学会, Jul. 2004, Not invited

粘性流体モデルに基づく液状化地盤の流動解析と矢板護岸による流動低減
小林 義和; 東畑 郁生
第9回計算工学講演会, May 2004, Not invited

液状化による地中構造物の浮き上がり解析
小林 義和; 東畑 郁生
第38回地盤工学研究発表会, Jul. 2003, Not invited

Improvement of Implementation of Towhata-Iai model in Diana
Kobayashi Yoshikazu; Kawaguchi Kazuhiro; Towhata Ikuo
DIANA CONFERENCE 2002, Oct. 2002, Not invited

歩道橋の振動低減
小林義和; 櫻田誠; 塩尻弘雄
土木学会第57回年次学術講演会, Sep. 2002, Not invited

振動実験等による建物の動特性把握
塩尻弘雄、アブリカム・アブドラ、小林義和
第57回年次学術講演, Sep. 2002, Not invited

逆解析による液状化砂の粘性係数同定
小林 義和; 東畑 郁生; 塩尻 弘雄
第37回地盤工学研究発表会, Jul. 2002, Not invited

NUMERICAL ANALYSIS ON GRAVITY TYPE CAISSON QUAY WALL MOVEMENT CAUSED BY LIQUEFACTION
Kobayashi Yoshikazu; Towhata Ikuo
The Tenth Pacific Congress on Marine Science and Tech-nology PACON2002, Jul. 2002, Not invited

エネルギー原理に基づく構造物の沈下解析において基礎幅および液状化層厚が沈下量に与える影響
小林 義和; 東畑 郁生
第26回地震工学研究所発表会講演論文集, Aug. 2001, Not invited

液状化に起因する斜面流動の三次元数値解析
小林 義和; 野田 武志; 東畑 郁生
第36回地盤工学研究発表会, Jun. 2001, Not invited

三次元液状化懐石プログラムによる事例解析
田 武志; 小林 義和; 東畑 郁生
第36回地盤工学研究発表会, Jun. 2001, Not invited

液状化による地盤の水平流動解析
小林 義和; 東畑 郁生
第34回地盤工学研究発表会, Jul. 1999, Not invited

砂質盛土模型の振動破壊実験
渡辺健治、前田知就、小林義和、東畑郁生
土木学会第53回年次学術講演会, Oct. 1998, Not invited

地震時壁面土圧に関する模型振動実験
渡辺健治、前田知就、小林義和、東畑郁生
第33回地盤工学研究発表会, Jul. 1998, Not invited

模型振動実験による物部岡部式の妥当性見当
前田知就、渡辺健治、小林義和、東畑郁生
第33回地震工学研究発表会, Jul. 1998, Not invited

修正繰り返し拡張カルマンフィルタ法による同定
小林 義和; 塩尻 弘雄
第3回計算工学講演会, May 1998, Not invited

ボーリング杭を利用した弾性波地盤構造調査法
小林 義和; 塩尻 弘雄
土木学会第51回年次学術講演会, Sep. 1996, Not invited

Japan Society of Civil Engineers

The Japanese Geotechnical Society

非破壊検査協会

多チャンネル計測による弾性波速度と減衰特性の空間分布の同定
日本学術振興会, 科学研究費助成事業, 01 Apr. 2021 - 31 Mar. 2024
小林 義和; 西田 孝弘; 小田 憲一; 中村 勝哉

流下中の土砂を含む雪崩を対象とした内部構造の観測と運動メカニズムの把握
日本学術振興会, 科学研究費助成事業, 01 Apr. 2019 - 31 Mar. 2024
小田 憲一; 小林 義和; 上石 勲; 中村 勝哉

AE-Tomography for anisotropic materials
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, 01 Apr. 2015 - 31 Mar. 2018
KOBAYASHI Yoshikazu; CHAI Hwa-Kian

Applicability limit of high accuracy simulation for rock-fall and debris-flow using several numerical methods.
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, 2010 - 2011
SAWADA Kazuhide; MAEDA Kenichi; KOBAYASHI Yoshikazu; MORIGUCHI Syuji; AOKI Takayuki