Development of an advanced multimode automatic ultrasonic texture measurement system for laboratory and production line application
Potter, M. D. G., Dixon, S., Morrison, J. P. and Suliamann, A. S. (2006) Development of an advanced multimode automatic ultrasonic texture measurement system for laboratory and production line application. In: Ultrasonics International (UI 05)/ World Congress on Ultrasonics (WCU 2005), Beijing, PEOPLES R CHINA, AUG 29-SEP 01, 2005. Published in: ULTRASONICS, 44 (Suppl. 1). E813-E817.Full text not available from this repository.
Official URL: http://dx.doi.org/10.1016/j.ultras.2006.05.111
We present work on the development of an ultrasonic texture measurement system for sheet metals using non-contact transducers, suitable for use both in the laboratory and on the production line. Variation of the velocity of the zero-order symmetric (S-0) Lamb wave is used to determine the crystallographic texture of polycrystalline metal sheets ranging in thickness from 0.1 to 3 mm. This system features improvements on previous state-of-the-art ultrasonic technology in that it probes velocity over a continuous range of angles using only two electromagnetic acoustic transducers (EMATs). This is demonstrated to offer a significant improvement in accuracy and allows the detection and investigation of asymmetric anisotropies in the sheets.
Another advantage of the system is its potential for combining several different measurements using a single pair of transducers. The capability is demonstrated for through-thickness shear wave measurements as well as the zero-order symmetric Lamb wave measurements which are the primary means of determining the texture. The change between generating Lamb and through-thickness bulk waves can be made entirely by changing the electrical circuit connected to the EMATs without modifying the transducer assembly in any way. Measurement of all of the above waves can provide information on the sheet thickness and other physical properties of the sheet in addition to texture. Certain texture parameters can be calculated from both Lamb and shear wave velocities, allowing self-calibration of the system. (c) 2006 Elsevier B.V. All rights reserved.
|Item Type:||Conference Item (UNSPECIFIED)|
|Subjects:||T Technology > TA Engineering (General). Civil engineering (General)
|Journal or Publication Title:||ULTRASONICS|
|Publisher:||ELSEVIER SCIENCE BV|
|Official Date:||22 December 2006|
|Number of Pages:||5|
|Title of Event:||Ultrasonics International (UI 05)/ World Congress on Ultrasonics (WCU 2005)|
|Location of Event:||Beijing, PEOPLES R CHINA|
|Date(s) of Event:||AUG 29-SEP 01, 2005|
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