1、AECMA STANDARD NORME AECMA AECMA NORM Edition approved for publication 1998-1 2-31 prEN 4522 Edition P 1 December 1998 Comments should be sent within six months after the date of publication to AECMA Gulledelle 94 6-1200 BRUXELLES PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES (AECMA)
2、 Gulledelle 94 - 8-1200 BRUXELLES - Tel. (+32) 2 775 81 10 - Fax. (+32) 2 775 81 11 ICs: Descriptors: ENGLISH VERSION Aerospace series Meta I I ic materials Test methods Pin-type bearing test of yield strength Srie arospatiale Matriaux mtalliques Mthodes dessais Rsistance la dformation Luft- und Rau
3、mfahrt Metallische Werkstoffe Prfverfahren Umformfestig keit This “Aerospace Series“ Prestandard has been drawn up under the responsibility of AECMA (The European Association of Aerospace Industries). It is published on green paper for the needs of AECMA-Members. It has been technically approved by
4、the experts of the concerned Technical Committee following comment by the Member countries. Subsequent to the publication of this Prestandard, the technical content shall not be changed to an extent that interchangeability is affected, physically or functionally, without re-identification of the sta
5、ndard. After examination and signature of the AECMA Standard Checking Centre (NPS) and formal agreement of the Official Services of the Member countries it will be submitted as a draff European Standard to CEN (European Committee for Standardization) for formal vote. Nota - Extra copies can be suppl
6、ied by B.N.A.E. - Technopolis 54 - 199. rue Jean-Jacques Rousseau - 92138 ISSY-LES-MOULINEAUX CEDEX C5 Chairman Mr Evetts I I aecma 1998 - 1012311 0015522 955 E Page 2 prEN 4522: 1998 Contents list introduction Scope . Normative references . . Definitions Health and safety . Principie . Testing requ
7、irements . Test report . m 3032333 0035523 871 m Page 3 prEN 4522: 1998 O Introduction This standard is part of the series of EN metallic material standards for aerospace applications. The general organization of this series is described in EN 4258. I Scope This standard specifies the requirements f
8、or the pin-type bearing test of metallic materials at ambient temperature for aerospace applications. It shall be applied when referred to in the EN technical specification or material standard unless otherwise specified on the drawing, order or inspection schedule. 2 Normative references This Europ
9、ean Standard incorporates by dated or undated reference provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of the publications app
10、ly to this European Standard only when incorporated in it by amendments or revision. For undated references the latest edition of the publication referred to applies. EN 4258 Aerospace series - Metallic materials - General organization of standardization - Links between types of EN standards and the
11、ir use 1) Aerospace series - Metallic materials - Definitions of general terms 2) EN 4259 EN 10002-2 Metallic materials - Tensile test test - Part 2: Verification of the force measuring system of the tensile testing machines EN 100024 Metallic materials - Tensile test - Part 4: Verification of exten
12、someters used in uniaxial testing ASTM E238-96 Standard test method for pin-type bearing test of metallic materials 3) 3 Definitions For the purposes of this standard, the following definitions apply: 3.1 General terms See EN 4259. 3.2 Other terms See ASTM E238-96. 1) Published as AECMA Prestandard
13、at the date of publication of this standard 2) In preparation at the date of publication of this standard 3) This standard is published by: American Society for Testing and Materials (ASTM), 100 Barr Harbor Dr, West Conshohocken, PA 19428-2959 - USA Page 4 prEN 4522: 1998 4 Health and safety Resourc
14、es, test pieces, test samples, test materials, test equipment and test procedures shall comply with the current health and safety regulations/laws of the countries where the test is to be carried out. Where materials and/or reagents which may be hazardous to health are specified, appropriate precaut
15、ions in conformity with local regulations and/or laws shall be taken. 5 Principle The test involves application of a load to a flat test piece through a close cylindrical fitting pin to measure the load carrying capacity of a material edge. 6 Testing requirements 6.1 Resources 6.1.1 Equipmentlplant
16、Testing machine which shall be verified at intervals not exceeding 12 months in accordance with EN 10002-2 and certified to class 1 ,O or better. Extensometer with an accuracy which shall be verified at intervals not exceeding 12 months in accordance with EN 100024 and certified to class 1 ,O or bet
17、ter. 6.1.2 MaterialslReagents Materialsireagents included may be suitable: - degreasing fluids; - recording paper; - means of electronic recording, if appropriate. 6.1.3 Qualification of personnel Testing to the requirements of this test method shall only be undertaken and/or supenrised by personnel
18、 who have demonstrated their competence by a suitable education and appropiate training and experience. 6.2 Test samplemest pieces See ASTM E238-96. Metric dimensions shall apply. NOTE: In certain cases the test piece may be the test sample. 6.3 Testing procedure See ASTM E238-96. Metric dimensions
19、shall apply. 6.3.1 Temperature of test The test shall be carried out at 10 “C 5 6 5 35 OC, unless otherwise specified. In cases of dispute the test shall be performed at 6= 23 “C I 5 “C. 6.4 Expression of results See ASTM E238-96. Metric units shall be used. = 30323Ll 0035525 bbll E Page 5 prEN 4522
20、: 1998 7 Test report All results shall be in written form and the test report shall include when relevant at least the following information: - reference to this standard; - any other information relevant to the test method (e.g. test conditions, test equipment, test procedure, verification, . . .);
21、 - identification and traceability to the semi-finished product to be tested in accordance with the technical specifications; - identification and traceability of test samples taken from the semi-finished product (e.g. location, orientation, size); - identification and traceability of test pieces ta
22、ken from the test samples (e.g. number, preparation, method, conditioning, uselmethod of mechanical straightening of coiled wire); - expression of results (e.g. individual values or mean values, units, if fracture outside middle third of gauge length, use of an extensometer to measure elongation after fracture, unusual features in the fracture surface, .); - recorded plotslgraphs, when necessary; - date of test; - traceability of individual performing the test; - any incident which may have affected the results; - any deviation from the test method standard.
