1、AECMA STANDARD NORME AECMA AECMA NORM Declassification approved 1998-1 1-30 prEN 2006 Edition 3 November 1998 The equivalent versions in French and German languages can be supplied by B.N.A.E. - Technopolis 54 - 199, rue Jean-Jacques Rousseau 92138 ISSY - LES - MOULINEAUX CEDEX - FRANCE PUBLISHED BY
2、 THE EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES (AECMA) Gulledelle 94 - B-1200 BRUXELLES - Tel. (+ 32) 2 775 81 1 O - Fax. ( + 32) 2 775 BI 1 1 ICs: Supersedes edition 2 December 1975 Descriptors: ENGLISH VERSION RUBBER FOR AEROSPACE USE TEST METHOD LASTOMRES MTHODES DESSAIS ELASTOMERE FR DIE LUFT
3、 UND RAUMFAHRT POUR APPLICATIONS AROSPATIALES PRFVERFAHREN f AECMA (The European Associa tion of Aerospace Industries). It is published on yello w paper in three equivalen for formal vote. Replace page 1 of the previoiis edition by this page aecma 1998 Copyright Association Europeene des Constructeu
4、rs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-CONTENTS I SCOPE AND FIELD OF APPLICATION 2 REFERENCES 3 TEST METHODS Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provid
5、ed by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-1 SCOPE This standard establishes the test methods for qualifying and inspecting rubhers used in aerospace construction. 2 REFERENCES I) In preparation Copyright Association Europeene
6、 des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-,prEN2006 - page 4 3 TEST METHODS * The test methods outlined in claust! 2 shall bc applied by taking into accourir- the requirements
7、given for cadi test in this cl i:uSe Test other than those quoted may be performed by mutual agreement between the producer and customer, 3.1 Vulcanization - Method I Time lapse between vulcanized and test is : I6 hours. 3.2 For laboratory testing and conditioning a temperature of 23 OC ? 2 C and a
8、relative humidity of 50 % 2 5 % shall be used. When agreed between Producer aiid Customer, testing and conditioning may be carried out at 23 OC k 2 OC and ambient humidity. 3.3 Density - Method 3 3.4 Hardness - Method 4 - Normal test. - Test piece thickness : approximately 8 mm obtained by stacking
9、a 2 mm f 0,2 mm thick sheet on a 6,3 mm * 0,3 mm thick sheet, the latter placed so as to contact the indentor. - Number of measurements : 3. In the specific caseof hardness yariatiori, determination after oven ageing or after liquid immersion, measure the hardness before and after treatment on stack
10、ed sheets, each being 2mm ? 0,2 mm thick. Method 4 shall be used for rubbers of a hardness ranging between 30 and 85 IRHD, but can be extended to those having a hardness ranging between 30 and 95 IRW. NOTE : For rubbers at the extremes of the hardness range, see : ISO/R 1400-1971 - Determination of
11、hardness of vulcanized rubbers SO/R 1815-1971 - Determination of hardness of vulcanized rubbers of high hardness (85 to 100 IRHD) , of low har-dness (10 to 35 IKHD). 3.5 -Stress-Strain ?roperties - Netliod 5 - Dumb-bell test piece, type 2 (total length : 75 mm). - Test piece thickness : 2 nun .f. 0,
12、2 m. - Number of test pieces : 3. 3.6 Tear Strength - Method 6 - Test piece thickness : 2 mm 2 0,2 mm. - Number of test pieces : 3. 3.7 Compression Set - Method 7 - Test conditions (time-temperatue) are defined by the materials data sheets. Copyright Association Europeene des Constructeurs de Materi
13、el Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-STD-AECMA PREN 200b-ENGL 1775 M LO12311 0011044 342 B prEN2006 - page 5 3.8 Resistancc to Low Tcii!pcratures 3.8. i Stiffness modulus (torsion test) - Fiethod 8 S
14、tiffness meacurcments are made in liquid. 3.8.2 Temperature limit of brittleness - ?lethod 9 Type A test piece (length 40 mm 6 mm, width 6 mm 2 1 mm, thickness 2,O . in this standard. by the materials data sheets. - Tensile test - elongarion with test piece dctined as per Method 5 of - liardness tes
15、t: - measured according to the conditions defined by Plethod 4 - Test conditions (test liquid, inunersion temperature and time) defined 3.11 Ozone Resistance - Method 13 - Test conditions - Ozoie concentration (50 % f 5 % or 200 f 20 p.p.h.m.by volume), tensile test piece, temperature and length of test are defined by the materials data sheets. l l Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
