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Mechanical Tests for Advanced Technical Ceramics

Objective



This proposal is in reponse to the invitation to tender for Project 1 in the Second Dedicated Call of the SMT Programme. It brings together a pan European consortium of specialised institutional expertise to address the four tasks specified, as follows:
Task 1: Surface roughness: An interlaboratory
study,possibly extended to sodding nations, will be initiated to evaluate the appropriateness of the wording in CEN ENV(ACT) 621-4. A range of advanced technical ceramic (ATC) surface types will be employed. Initially these will be fully characterised, and then selected appropriate ones will be issued to participants. Results will be analysed and appropriate conclusions drawn about the restricted practice proposed in the ENV . Links to relevant surface standards committees ensure good practice in keeping with current metrological requirements and thinking.
Task 2 Oxidation: A research group will be set up
to investigate experimental control requirements to achieve homogeneity and reproducibility of oxidation in various furnacing systems, addressing control parameters, such as furnace geometry, mounting and support of test-pieces, gas flow and shielding effects, etc., considered critical to the establishment of formal wording in a standard. Consistency of result will be the key result sought. A variety of relevant ATCs will be employed.
Task 3: Elastic moduli:
A research group with the required spectrum of facilities will review and compare methods in the ENV using a variety of ATC materials in a range of appropriate geometries. An error analysis of each method will be made. An interlaboratory comparison will then be conducted to provide evidence of the acceptability of reproducibility and equivalence of the proposed methods. The research group will also conduct an evaluation of the methods extended where possible to elevated temperatures to provide guidance for further standards drafting.
Task 4: Hardness: A research group will first evaluate ceramic hardness reference blocks from two sources and decide their applicability to the practice defined in the ENV. It will then examine the general applicability of the standard to a wide range of ATCs in order to define its scope in materials terms. An interlaboratory study will be organised and analysed to verify that the practices proposed have acceptable reproducibility In parallel, two partners with the relevant specialised equipment will also evaluate depth-sensinq hardness on the same reference blocks to provide a comparison of methods and to evaluate prospects for future standardisation of this method for hard materials.
Progress of and output from the project will be channelled directly CEN TC184 to guide the formulation and evaluation of proposed standards.

Funding Scheme

CSC - Cost-sharing contracts

Coordinator

NPL MANAGEMENT LTD.
Address
Queens Road 33
TW11 0LW Teddington
United Kingdom

Participants (10)

Bundesanstalt für Materialforschung und Materialprüfung
Germany
Address

12205 Berlin
Commission of the European Communities
Netherlands
Address
3,Westerduinweg
1755 ZG Petten
Eindhoven University of Technology
Netherlands
Address
2,Den Dolech 2
5600 MB Eindhoven
FRAUNHOFER GESELLSCHAFT ZUR FORDERUNG DER ANGEWANDTEN FORSCHUNG E.V.*
Germany
Address
28,Winterbergstraße 28
01277 Weissig - Dresden
FRAUNHOFER GESELLSCHAFT ZUR FORDERUNG DER ANGEWANDTEN FORSCHUNG E.V.*
Germany
Address
Woehlerstrasse 11
79108 Freiburg (In Breisgau)
NATIONAL RESEARCH COUNCIL OF ITALY
Italy
Address
Strada Delle Cacce 73
10135 Torino (Turin)
Société Française de Céramique (SFC)
France
Address
23 Rue De Cronstadt
75015 Paris
Swedish Ceramic Institute
Sweden
Address

402 29 Göteborg
Universität Wien
Austria
Address
4,Strudlhofgasse
1090 Wien
VITO - Vlaamse Instelling voor Technologisch Onderzoek NV
Belgium
Address
200,Boeretang
2400 Mol