CORDIS Database: RESULTS
Use of multi-frequency eddy current testing combined with 
		ultrasonic velocity measurement to predict the mechanical 
		properties and structure of ADI castings

Record Control Number : 28193
Quality Validation Date : 2002-07-01
Update Date : 2002-07-30
Abstract : Multi-frequency eddy current testing has been shown to have the 
		following attributes:
		
		- It can automatically sort acceptable and unacceptable casting.
		- It can rank ADI castings in order of hardness.
		- It can separate castings austenitised at different temperatures 
		or austempered for different times at different temperatures.
		- It can predict the retained austenite content to within +/-3% if 
		individual algorithms are developed for specific compositions of 
		ductile iron.
		- By linking multi-frequency eddy current testing with other NDT 
		tests which are sensitive to graphite form (such as resonant 
		frequency or ultrasonic velocity measurement) , it is possible to 
		predict proof and tensile strengths of ADI casting to within +/-10% 
		of their actual values.
		- However, it is not yet possible to predict the % elongation to an 
		acceptable degree of accuracy and the need for routine mechanical 
		tests can only be reduced but not eliminated.
		- This development is considered to be of practical significance 
		since every casting can be evaluated non-destructively and a 
		reasonable assessment made of its properties. This should allow 
		potential users of ADI castings to have a much-improved confidence 
		in the consistency of engineering components made from this 
		material and hence increase the development of new markets for ADI 
		castings.
		
		Laboratory research has shown considerable promise in the use of 
		combined NDT tests to predict the structure and mechanical 
		properties of ADI materials. Although much of this has been carried 
		out on simple test bars, a more limited number of tests have also 
		demonstrated that the technique has reached a stage where it would 
		be appropriate to asses it more extensively under production 
		conditions in a foundry.
Subject Descriptors : Expert systems, Fabrication, Metals, alloys
Subject Index Codes : Information Processing, Information Systems, Industrial Manufacture,
		Materials Technology
Subject Class : IT, telecommunications, Materials, industrial manufacturing technologies
Market Applications : Metal products (ferrous, nonferrous)
Stage of Development : Prototype/demonstrator available for testing
Remarks : TIP Data: Adel_1172
Property Rights : Partnership/other contractual agreement(s)
Collaboration Sought : Information exchange/Training
Collaboration Detail : Experience in linking individual pieces of NDT equipment and 
		developing algorithms
Sources of Support : CEC
Programmes : BRITE/EURAM 3
Projects : BRST985243
Project Title : Development of new systems for a cost effective application of adi 
		in sme foundries

Contact Details
  Contact Name : LOISEL, Francis
  Contact Organisation : Boutte Fonderie
  Address : 23 Rue Voltaire BP 2
  City : Friville Escarbotin
  Region : BASSIN PARISIEN
PICARDIE
Somme
  Postcode : 80531
  Country : FRANCE
  Telephone Number : +33-322-302001
  Fax Number : +33-322-264782
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