Stress Intensity Factor Measurement of Two-Dimensional Cracks by the Use of Piezoelectric Sensor.
Bibliographic Information
- Other Title
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- 圧電センサーを用いた二次元き裂の応力拡大係数の測定
- アツデン センサー オ モチイタ 2ジゲン キレツ ノ オウリョク カクダイ ケイスウ ノ ソクテイ
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Abstract
In this paper, a method to measure the stress intensity factor of a two-dimensional crack existing in a member of real structure is presented. The proposed method uses the following properties of piezoelectric materials; (1) isotropic piezoelectric material induces an electric charge which is proportional to the sum of stresses (σx+σy) on the structural member's surface; (2) the electric charge is also proportional to the integral of (σx+σy) in the area where the piezoelectric element is adhered to the structure. In order to obtain the stress intensity factors of Model I and Model II separately, two small pieces of piezoelectric elements are adhered near the crack tip so that the two piezoelectric elements are placed close to each other with the crack tip positioned between the piezoelectric elements. The electric current from the piezoelectric elements are integrated by the integration circuits and the output voltages which are proportional to the electric charge induced in the piezoelectric elements are measured. The stress intensity factors of Model I and Model II of the crack are estimated by the use of the measured output voltages.
Journal
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- TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A
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TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A 68 (672), 1212-1219, 2002
The Japan Society of Mechanical Engineers
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Details 詳細情報について
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- CRID
- 1390001204446710144
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- NII Article ID
- 110002370205
- 10012549215
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- NII Book ID
- AN0018742X
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- ISSN
- 18848338
- 03875008
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- NDL BIB ID
- 6273870
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed