IEICE TRANSACTIONS on Fundamentals
A New Hybrid Model to Calculate Echoes and Ultrasonic Fields Scattered by Flaws Combining FDTD Method with Rayleigh Integral
Summary :
A new hybrid model to calculate echoes and ultrasonic fields scattered by flaws is presented. In this model, transmitted fields by a transducer and fields scattered by flaws are calculated using the Rayleigh integral and the FDTD method, respectively. Received echo signals by the transducer are obtained by the inner product of the transmitted fields and the scattered ones at each grid for the FDTD method, and integrating those in a calculation area. Since the calculation area for the FDTD method can be limited around flaws, the calculation time is short and computer memory usage can be reduced. Experiments are done for two types of test object to confirm the validity of the hybrid model. As a result, experimental results are in good agreement with calculated ones.
- Publication
- IEICE TRANSACTIONS on Fundamentals Vol.E90-A No.7 pp.1366-1375
- Publication Date
- 2007/07/01
- Publicized
- Online ISSN
- 1745-1337
- DOI
- 10.1093/ietfec/e90-a.7.1366
- Type of Manuscript
- PAPER
- Category
- Engineering Acoustics
Authors
Keyword
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Tomonori KIMURA, Koichiro MISU, Shusou WADAKA, Mitsuhiro KOIKE, "A New Hybrid Model to Calculate Echoes and Ultrasonic Fields Scattered by Flaws Combining FDTD Method with Rayleigh Integral" in IEICE TRANSACTIONS on Fundamentals,
vol. E90-A, no. 7, pp. 1366-1375, July 2007, doi: 10.1093/ietfec/e90-a.7.1366.
Abstract: A new hybrid model to calculate echoes and ultrasonic fields scattered by flaws is presented. In this model, transmitted fields by a transducer and fields scattered by flaws are calculated using the Rayleigh integral and the FDTD method, respectively. Received echo signals by the transducer are obtained by the inner product of the transmitted fields and the scattered ones at each grid for the FDTD method, and integrating those in a calculation area. Since the calculation area for the FDTD method can be limited around flaws, the calculation time is short and computer memory usage can be reduced. Experiments are done for two types of test object to confirm the validity of the hybrid model. As a result, experimental results are in good agreement with calculated ones.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1093/ietfec/e90-a.7.1366/_p
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@ARTICLE{e90-a_7_1366,
author={Tomonori KIMURA, Koichiro MISU, Shusou WADAKA, Mitsuhiro KOIKE, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={A New Hybrid Model to Calculate Echoes and Ultrasonic Fields Scattered by Flaws Combining FDTD Method with Rayleigh Integral},
year={2007},
volume={E90-A},
number={7},
pages={1366-1375},
abstract={A new hybrid model to calculate echoes and ultrasonic fields scattered by flaws is presented. In this model, transmitted fields by a transducer and fields scattered by flaws are calculated using the Rayleigh integral and the FDTD method, respectively. Received echo signals by the transducer are obtained by the inner product of the transmitted fields and the scattered ones at each grid for the FDTD method, and integrating those in a calculation area. Since the calculation area for the FDTD method can be limited around flaws, the calculation time is short and computer memory usage can be reduced. Experiments are done for two types of test object to confirm the validity of the hybrid model. As a result, experimental results are in good agreement with calculated ones.},
keywords={},
doi={10.1093/ietfec/e90-a.7.1366},
ISSN={1745-1337},
month={July},}
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TY - JOUR
TI - A New Hybrid Model to Calculate Echoes and Ultrasonic Fields Scattered by Flaws Combining FDTD Method with Rayleigh Integral
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 1366
EP - 1375
AU - Tomonori KIMURA
AU - Koichiro MISU
AU - Shusou WADAKA
AU - Mitsuhiro KOIKE
PY - 2007
DO - 10.1093/ietfec/e90-a.7.1366
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E90-A
IS - 7
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - July 2007
AB - A new hybrid model to calculate echoes and ultrasonic fields scattered by flaws is presented. In this model, transmitted fields by a transducer and fields scattered by flaws are calculated using the Rayleigh integral and the FDTD method, respectively. Received echo signals by the transducer are obtained by the inner product of the transmitted fields and the scattered ones at each grid for the FDTD method, and integrating those in a calculation area. Since the calculation area for the FDTD method can be limited around flaws, the calculation time is short and computer memory usage can be reduced. Experiments are done for two types of test object to confirm the validity of the hybrid model. As a result, experimental results are in good agreement with calculated ones.
ER -
English
