To provide an apparatus improved in distinguishability of closed cracks, bubbles, or lesions
Nondestructive evaluation (NDE) of cracks, delamination, and kissing bonds is important for safely managing and operating structures and components. Ultrasonic NDE is widely used, and ultrasonic phased array has become one of the primary methods for imaging internal defects. However, there are problems regarding measurement errors of closed defects, such as closed cracks, and discrimination of cracks against other defects and geometric changes. With the present invention, it has become possible to provide an imaging apparatus capable of detecting defects represented by closed cracks with high accuracy and high discrimination. Further application of the apparatus can be expected to detect bubbles and lesions contained in tissues. In the present invention, by utilizing the incident-wave-amplitude dependence of the fundamental scattered waves, the closed cracks can be visualized with a higher signal-to-noise ratio than the existing technology.
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The revenue generated from technology transfer is reinvested as new research funding for universities and researchers, and is utilized to create further research outcomes. To ensure the smooth operation of this cycle, known as the "Intellectual Creation Cycle," we will vigorously promote technology transfer. The types of seeds we handle include patents, know-how, databases, and programs. We have established a collaborative framework by signing basic technology transfer agreements with the following universities (as of June 1, 2025): Tohoku University, Hirosaki University, Iwate University, Akita University, Fukushima University, Yamagata University, Tohoku Gakuin University, Iwate Medical University, Fukushima Medical University, Aizu University, Miyagi University, Hokkaido University, Muroran Institute of Technology, and Showa Medical University.
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