| Presentation | 2002/11/22 Detection of Damage and Fracture of Forging Tool by Fractal Property of AE Kunio HAYAKAWA, Tamotsu NAKAMURA, Shigekazu TANAKA, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Detection of damage and fracture of forging tools via the fractal property of acoustic emission (AE) is performed. Workpieces processed by conversion coating were used to eliminate the effect of friction on AE. After 300 cycles of extrusion, the fractal dimension is almost constant at 2.04 on average. Then, another series of cyclic extrusion was performed with mineral oil and stearic acid. At 101 cycles of extrusion, the onset of crack on the die radius can be observed. The former average fractal dimension, 2.01, of the onset of the crack changed to 1.52 after the onset of the crack. Finally, a method for separating the dieinduced AE from the total AE is derived based on the Kaiser effect. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Cold Forward Extrusion / Acoustic Emission / Fractal Dimension / Crack / Kaiser Effect |
| Paper # | SAW2002-76 |
| Date of Issue |
| Conference Information | |
| Committee | US |
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| Conference Date | 2002/11/22(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
| Secretary | |
| Assistant | |
| Paper Information | |
| Registration To | Ultrasonics (US) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Detection of Damage and Fracture of Forging Tool by Fractal Property of AE |
| Sub Title (in English) | |
| Keyword(1) | Cold Forward Extrusion |
| Keyword(2) | Acoustic Emission |
| Keyword(3) | Fractal Dimension |
| Keyword(4) | Crack |
| Keyword(5) | Kaiser Effect |
| 1st Author's Name | Kunio HAYAKAWA |
| 1st Author's Affiliation | Faculty of Engineering, Shizuoka University() |
| 2nd Author's Name | Tamotsu NAKAMURA |
| 2nd Author's Affiliation | Faculty of Engineering, Shizuoka University |
| 3rd Author's Name | Shigekazu TANAKA |
| 3rd Author's Affiliation | Faculty of Engineering, Shizuoka University |
| Date | 2002/11/22 |
| Paper # | SAW2002-76 |
| Volume (vol) | vol.102 |
| Number (no) | 486 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |