Abstract
Phase-shifting digital holography is applied to record the caustics of a stationary crack at arbitrary distances. The stress intensity factors of the crack are measured from the reconstructed images of the caustics. The measurement results show that the stress intensity factors are almost constant in the region where the initial curve radius, i.e., distance from the crack tip, is greater than half the specimen thickness. In addition, the stress intensity factors decrease in a three-dimensional stress field. These results correspond to those by Rosakis and Ravi-Chandar. This confirms that this method is applicable to measure the stress intensity factor of cracks.
| Original language | English |
|---|---|
| Article number | 115802 |
| Journal | Optical Engineering |
| Volume | 45 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - 2006 Nov |
| Externally published | Yes |
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Keywords
- Caustic method
- Fracture mechanics
- Phase-shifting digital holography
- Stress intensity factor
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
Cite this
Recording caustic images by phase-shifting digital holography. / Sakaue, Kenichi; Suzuki, Shinichi; Takashi, Masahisa.
In: Optical Engineering, Vol. 45, No. 11, 115802, 11.2006.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Recording caustic images by phase-shifting digital holography
AU - Sakaue, Kenichi
AU - Suzuki, Shinichi
AU - Takashi, Masahisa
PY - 2006/11
Y1 - 2006/11
N2 - Phase-shifting digital holography is applied to record the caustics of a stationary crack at arbitrary distances. The stress intensity factors of the crack are measured from the reconstructed images of the caustics. The measurement results show that the stress intensity factors are almost constant in the region where the initial curve radius, i.e., distance from the crack tip, is greater than half the specimen thickness. In addition, the stress intensity factors decrease in a three-dimensional stress field. These results correspond to those by Rosakis and Ravi-Chandar. This confirms that this method is applicable to measure the stress intensity factor of cracks.
AB - Phase-shifting digital holography is applied to record the caustics of a stationary crack at arbitrary distances. The stress intensity factors of the crack are measured from the reconstructed images of the caustics. The measurement results show that the stress intensity factors are almost constant in the region where the initial curve radius, i.e., distance from the crack tip, is greater than half the specimen thickness. In addition, the stress intensity factors decrease in a three-dimensional stress field. These results correspond to those by Rosakis and Ravi-Chandar. This confirms that this method is applicable to measure the stress intensity factor of cracks.
KW - Caustic method
KW - Fracture mechanics
KW - Phase-shifting digital holography
KW - Stress intensity factor
UR - http://www.scopus.com/inward/record.url?scp=33847751082&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33847751082&partnerID=8YFLogxK
U2 - 10.1117/1.2390711
DO - 10.1117/1.2390711
M3 - Article
VL - 45
JO - Optical Engineering
JF - Optical Engineering
SN - 0091-3286
IS - 11
M1 - 115802
ER -