Parallax Error Correction of a Multilens Camera for Precise Determination of Dynamic Stress Intensity Factor
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概要
- 論文の詳細を見る
To improve the accuracy in caustic measurement, the effect of parallax with 30 lenses of a Cranz-Schardin-type camera on the determination of caustic diameter D was experimentally evaluated using a single-edge-notch-type model specimen. Correction factors for the transverse diameter of caustics on an image plane were obtained. These factors were taken into account in the determination of the velocity effect on the dynamic stress intensity factor Ajj) of PMMA during fast crack propagation. It is shown that tlne hysteresis in the K_<ID>-a curves was similar for larger and smaller initial curves except at velocities higher than 400 m/s.
- 社団法人応用物理学会の論文
- 1994-02-01
著者
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Kido Mamoru
Research Institute For Applied Mechanics Kyushu University
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Takahashi Kiyoshi
Research Institute For Applied Mechanics Kyushu University
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- Parallax Error Correction of a Multilens Camera for Precise Determination of Dynamic Stress Intensity Factor
- Ultrasonic Fractography Studies on Discontinuous Fracture Propagation in Polymers : Ultrasonic Imaging and Microscopy