| FullText URL | fulltext.pdf |
|---|---|
| Author | Sakamoto, Junji| Tada, Naoya| Uemori, Takeshi| Kuniyasu, Hayato| |
| Keywords | nondestructive inspection crack detection low loading surface profile turbine blade finite element analysis |
| Published Date | 2020-07-16 |
| Publication Title | Applied Sciences |
| Volume | volume10 |
| Issue | issue14 |
| Publisher | MDPI |
| Start Page | 4883 |
| ISSN | 2076-3417 |
| Content Type | Journal Article |
| language | 英語 |
| OAI-PMH Set | 岡山大学 |
| Copyright Holders | © 2020 by the authors. |
| File Version | publisher |
| DOI | 10.3390/app10144883 |
| Web of Science KeyUT | 000554160000001 |
| Related Url | isVersionOf https://doi.org/10.3390/app10144883 |
| FullText URL | fulltext.pdf |
|---|---|
| Author | Karunathilaka, Nuwan| Tada, Naoya| Uemori, Takeshi| Hanamitsu, Ryota| Fujii, Masahiro| Omiya, Yuya| Kawano, Masahiro| |
| Keywords | cold forging high-speed tool steel lubrication residual stress surface roughness tool deformation |
| Published Date | 2019-07-12 |
| Publication Title | Metals |
| Volume | volume9 |
| Issue | issue7 |
| Publisher | MDPI |
| Start Page | 783 |
| ISSN | 2075-4701 |
| Content Type | Journal Article |
| language | 英語 |
| OAI-PMH Set | 岡山大学 |
| Copyright Holders | © 2019 by the authors. |
| File Version | publisher |
| DOI | 10.3390/met9070783 |
| Web of Science KeyUT | 000482332400067 |
| Related Url | isVersionOf https://doi.org/10.3390/met9070783 |
| JaLCDOI | 10.18926/46996 |
|---|---|
| FullText URL | mfe_36_1_007_016.pdf |
| Author | Li, Yan| Abe, Takeji| Tada, Naoya| Kanazawa, Masanori| |
| Abstract | The change in the surface morphology of polycrystalline titanium during tensile plastic deformation is studied, using the scanning probe microscope as well as the laser scanning microscope. The observation shows that the slip occurs mainly near grain boundary at the strain range of ε < 0.05. The slip develops with the applied strain, and the slip on the second slip system or the crossing of slip lines appear. The surface roughness increases linearly with the applied strain. The height difference between the grain boundary area and the inner grain area also increases with the applied strain, though the increase rate becomes low after the applied strain of about 0.3. The nano-scale height difference of the surface step of slip lines increases with the applied strain, though it remains almost constant after the applied strain of 0.4. The averaged surface roughness measured with the scanning probe microscope is in good agreement with that measured with the laser scanning microscope. |
| Keywords | Plasticity Polycrystalline Titanium Tensile Deformation Surface Morphology Slip Twin Probe Scanning Microscope Laser Scanning Microscope |
| Publication Title | Memoirs of the Faculty of Engineering, Okayama University |
| Published Date | 2001-12 |
| Volume | volume36 |
| Issue | issue1 |
| Start Page | 7 |
| End Page | 16 |
| ISSN | 0475-0071 |
| language | 英語 |
| File Version | publisher |
| NAID | 80012831215 |
| JaLCDOI | 10.18926/46995 |
|---|---|
| FullText URL | mfe_36_1_001_006.pdf |
| Author | Kondou, Ryouji| Abe, Takeji| Tada, Naoya| Shimizu, Ichiro| |
| Abstract | Change in crystal orientation and strain of individual grains during tensile plastic deformation are studied to clarify on the microscopic deformation behavior of polycrystalline copper. The orientation of grain is measured by electron backscatter diffraction (EBSD) technique in the scanning electron microscope. The principal strain of grain is also measured by obtaining the approximated ellipse of strain distribution. The deformation of grains dependent on their initial orientation and the rotation of the principal strain during uniaxial tension are clarified. |
| Keywords | Polycrystalline Copper Plastic Deformation SEM EBSD Method Grain Orientation Crystal Orientation Map |
| Publication Title | Memoirs of the Faculty of Engineering, Okayama University |
| Published Date | 2001-12 |
| Volume | volume36 |
| Issue | issue1 |
| Start Page | 1 |
| End Page | 6 |
| ISSN | 0475-0071 |
| language | 英語 |
| File Version | publisher |
| NAID | 120003497021 |
| JaLCDOI | 10.18926/14135 |
|---|---|
| FullText URL | Mem_Fac_Eng_39_1_7.pdf |
| Author | Wang, Xiaoqun| Abe, Takeji| Tada, Naoya| Shimizu, Ichiro| |
| Abstract | Roughening on free surface of polycrystalline metal during plastic deformation is closely related to the inhomogeneous deformation in the respective grain at the surface. Uniaxial tensile tests are carried out on annealed pure aluminum sheet specimens with various averaged grain sizes. The roughening is measured by a 3-dimensional stylus instrument to examine the roughness change in both sides of specimen surfaces at each strain. The irregularities on one side are reversed on the backside, when the averaged grain size is as large as the thickness of the specimen. Discussions are made on the relation between the surface shapes of both sides adopting the cross correlation factor. The strains of respective grains are also measured from the grain boundary shape before and after plastic deformation. There are some deviations in the strains of the grains and their standard deviation increases with the applied strain. |
| Publication Title | Memoirs of the Faculty of Engineering, Okayama University |
| Published Date | 2005-01 |
| Volume | volume39 |
| Issue | issue1 |
| Start Page | 7 |
| End Page | 15 |
| ISSN | 0475-0071 |
| language | 英語 |
| File Version | publisher |
| NAID | 120002308149 |
