Linked Life Data

16793085

Source:http://linkedlifedata.com/resource/pubmed/id/16793085

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:dateCreated
2007-1-1
pubmed:abstractText
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 (S0) 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.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
1874-9968
pubmed:author
pubmed:issnType
Electronic
pubmed:day
22
pubmed:volume
44 Suppl 1
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
e813-7
pubmed:dateRevised
2009-11-11
pubmed:meshHeading
pubmed:year
2006
pubmed:articleTitle
Development of an advanced multimode automatic ultrasonic texture measurement system for laboratory and production line application.
pubmed:affiliation
Department of Physics, University of Warwick, Coventry, CV4 7AL, UK. m.d.g.potter@warwick.ac.uk <m.d.g.potter@warwick.ac.uk>
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't, Evaluation Studies