Kyoto University · 공학
와타나베 토시키 교수의 연구실은 지속 가능한 에너지 기술과 고해상도 지구물리학 이미징을 핵심으로 하는 다학제적 연구를 수행합니다. 특히 고체전고체 이온도체를 활용한 고에너지 밀도 리튬이온 배터리의 안정성 향상과, 시간-장소 분포를 고려한 고해상도 타임랩스 지반파 이미징 기법 개발에 주력하고 있습니다. 나노미세 구조 분석을 위한 동기광 X-CT 기반 비파괴 분석 기술도 응용하여 재료의 균열 기원 메커니즘을 규명하고 있습니다. 이와 같은 연구들은 에너지 저장 장치의 안전성 향상과 지하 자원 탐사의 정밀도 향상에 기여하고 있습니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
PreviousNext No AccessSEG Technical Program Expanded Abstracts 1999Seismic traveltime tomography using Fresnel volume approachAuthors: Toshiki WatanabeToshifumi MatsuokaYuzuru AshidaToshiki WatanabeKyoto University, Japan, Toshifumi MatsuokaKyoto University, Japan, and Yuzuru AshidaKyoto University, Japanhttps://doi.org/10.1190/1.1820777 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Permalink: https://doi.org/10.1
To detect the change of physical properties in small areas, a series of high‐resolution waveform inversions is applied to time‐lapse seismic data. A procedure by use of differentiation between the time‐lapse data and normalization using reference data is proposed in this study. The procedure is derived as a straight‐forward extension of waveform inversion as the scatterer imaging. Through numerical tests, the proposed approach was found to be more accurate than the conventional approach in obtai
The crack initiation and propagation under the application of opening load were analyzed in situ using nondestructive synchrotron radiation X-ray computed tomography (nanoscopic SR X-CT) with a spatial resolution of ~50 nm. The results show that the voids and cracks initiation are not only the result of local stresses but also are due to two competing nanoscale mechanisms, that is, fiber/plastic interface debonding and in-resin crack initiation. In the “thin” epoxy region in which the resin thic
All-solid-state lithium batteries that use lithium metal as the anode have extremely high energy densities. However, for lithium metal anodes to be used, lithium dendrite formation must be addressed. Recently, the addition of lithium iodide (LiI) to sulfide solid electrolytes was found to suppress lithium dendrite formation. It is unclear whether the cause of this suppression is the improvement of the ionic conductivity of the solid electrolyte itself or the electrochemical properties of the lit
This study investigates the performance of a frequency domain viscoacoustic full wave form nonlinear inversion to obtain high resolution images of velocity and attenuation. An efficient frequency domain implementation is applied that consists of performing a series of single frequency inversions sweeping from low to high frequency. A cascaded inversion was adopted in which the real part of the velocity is first imaged using the phase information, then the quality factor (Q) is imaged using the a
