1、AECMA STANDARD NORME AECMA AECMA NORM Edition approved for publication prEN 4525 Edition P 1 December 1998 C5 Chairman Comments should be sent within six months after the date of publication to PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES (AECMA) Gulledelle 94 - 8-1200 BRUXELLES - T
2、el. (+32) 2 775 81 10 - Fax. (+32) 2 775 81 11 ICs: ENGLISH VERSION Aerospace series Aluminium and aluminium alloys Test methods Shear testing Srie arospatiale Aluminium et alliages daluminium Mthodes dessais Essai de cisaillement Luft- und Raumfahrt Aluminium und Aluminiumlegierungen Prfverfahren S
3、cherversuch 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 the experts of the concerned Technical Committee
4、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 standard. After examination and signature of the AEC
5、MA Standard Checking Centre (NPS) and formal agreement of the Official Services of the Member countries it will be submitted as a draft European Standard to CEN (European Committee for Standardization) for formal vote. 1998-1 2-31 AECMA Gulledelle 94 Mr Evetts 8-1200 BRUXELLES aecma 19s STD-AECMA PR
6、EN 4525-ENGL 1778 LOI12311 0015537 38b Page 2 prEN 4525: 1998 Contents list Introduction . Scope . Normative references . Definitions Health and safety Principle . Testing requirements . . Test report . O Introduction This standard is part of the series of EN metallic material standards for aerospac
7、e applications. The general organization of this series is described in EN 4258. 1 Scope This standard specifies the requirements for the shear testing of aluminium alloys at ambient temperature for aerospace applications. It shall be applied when referred to in the EN technical specification or mat
8、erial standard unless otherwise specified on the drawing, order or inspection schedule. 2 Normative references This European 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 publ
9、ications are listed hereafter. For dated references, subsequent amendments to or revisions of any of the publications apply 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 Aero
10、space series - Metallic materials - General organization of standardization - Links between types of EN standards and their use Aerospace series - Metallic materials - Definitions of general terms 1) Metallic materiais - Tensile test test - Part 2: Verification of the force measuring system of the t
11、ensile testing machines Standard test method for shear testing of aluminium alloys 2) EN 4259 EN 10002-2 ASTM B769-94 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 B769-94. 1) In preparation at the date of pu
12、blication of this standard 2) This standard is published by: American Society for Testing and Materials (ASTM), 100 Barr Harbor Dr, West Conshohocken, PA 19428-2959 - USA STD*AECMA PREN i525-ENGL 1998 D 10L23LL 0035537 157 D Page 4 prEN 4525: 1998 4 Health and safety Resources, test pieces, test sam
13、ples, 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 precautions in conformity with l
14、ocal regulations and/or laws shall be taken. 5 Principle The test consists of subjecting a machined cylindrical test piece to double shear loading in a test jig using a tension (or compression) testing machine. 6 Testing requirements 6.1 Resources 6.1.1 Equipmenplant Testing machine which shall be v
15、erified at intervals not exceeding 12 months in accordance with EN 10002-2 and certified to class 1 ,O or better. 6.1.2 MaterialdReagents Materialsheagents included may be suitable: - degreasing fluids; - recording paper; - means of electronic recording, if appropriate. 6.1.3 Qualification of person
16、nel Testing to the requirements of this test method shall only be undertaken andlor supervised by personnel who have demonstrated their competence by a suitable education and appropiate training and experience. 6.2 Test samplediest pieces . See ASTM 8769-94. Metric dimensions shall apply. NOTE: In c
17、ertain cases the test piece may be the test sample. 6.3 Testing procedure See ASTM 8769-94. Metric units shall apply. 6.3.1 Temperature of test The test shall be carried out at 10 OC s 8s 35 “C, unless othennrise specified. In cases of dispute the test shall be performed at O= 23 OC f 5 OC. 6.4 Expr
18、ession of results See ASTM 8769-94. Metric units shall be used. Page 5 prEN 4525: 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 met
19、hod (e.g. test conditions, test equipment, test procedure, verification, .); - 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. locat
20、ion, orientation, size); - identification and traceability of test pieces taken from the test samples (e.g. number, preparation, method, conditioning, use/method of mechanical straightening of coiled wire); - expression of results (e.g. individual values or mean values, units, if fracture outside mi
21、ddle third of gauge length, use of an extensometer to measure elongation after fracture, unusual features in the fracture surface, .); - recorded plots/graphs, 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.
