Material Characterization by Ultrasonic Imaging.
نویسندگان
چکیده
منابع مشابه
New Generation of High Resolution Ultrasonic Imaging Technique for Material Characterization and NDT
The role of non-destructive material characterization and NDT is changing at a rapid rate, continuing to evolve alongside the dramatic development of novel techniques based on the principles of high-resolution imaging. The modern use of advanced optical, thermal, ultrasonic, laser-ultrasound, acoustic emission, vibration, electro-magnetic, and X-ray techniques, etc., as well as refined measurem...
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Guided wave imaging with a sparse array of inexpensive transducers offers a fast, reliable, and cost-efficient means for damage detection and localization in plate-like structures such as aircraft and spacecraft skins. As such, this technology is a natural choice for inclusion in condition-based maintenance and integrated structural health management programs. One of the implementation challeng...
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In a typical ultrasonic material characterization system, the output voltage of the transducer is recorded as a function of the relative position of the transducer and the specimen. The velocity and attenuation of the leaky surface acoustic waves and the reflectance function for the immersion liquid–specimen interface can be obtained from the recorded data. The experimental arrangements with lo...
متن کاملComputer Modeling and Simulation of Ultrasonic System for Material Characterization
In this paper the system for simulation, measurement and processing in graphical user interface implementation is presented. The received signal from the simulation is compared to that of an actual measurement in the time domain. The comparison of simulated, experimental data clearly shows that acoustic wave propagation can be modeled. The feasibility has been demonstrated in an ultrasound tran...
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The line-focus-beam ultrasonic material characterization (LFB-UMC) system is applied to evaluation of commercial Pyrex glasses (C-7740, Corning Inc.). Twenty-eight specimens were prepared at random from different lots. Velocities of leaky surface acoustic waves (LSAWs), VLSAW, were measured at 225 MHz around 23°C. VLSAW was 3121.85-3149.83 m/s. To understand the velocity variations, bulk acoust...
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ژورنال
عنوان ژورنال: Materia Japan
سال: 1996
ISSN: 1340-2625,1884-5843
DOI: 10.2320/materia.35.804