1、a* 1 CEN EN*2744 92 9 3404589 0024523 2 EUROPEAN STANDARD EN 27443992 NORME EUROPENNE EUROPISCHE NORM flarch 1992 UDC 620.22:620.1-97:629.7 o Descriptors: Aircraft industry, non-metallic sections, preferred test temperatures English versioh 4 Aerospace series - Non metallic materials - Preferred tes
2、t temperatures Srie arospacialc - flatriaux non RCtalliques - Tempratures prfrentielles dessais Luft- und Raumfahrt - Nichtmetallische Werkstoffe - Vorrugsprftemperaturen This European Standard was approved by CEN on 199243-20. CEN members are bound to comply with the CEN/CENELEC Internal Regulation
3、s which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This Europea
4、n Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the nationa
5、l standards bodies of Austria, EeLgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normu
6、ng Central Secretariat: pue de Stassart,% -1050 EnisLs 0 1992 Copyright reserved to CEN incnibers Ref. No. EN 2744:1992 E CEN ENa2744 92 3404589 0024524 4 11111 Page 2 EN 2744:1992 Foreword 4 This European Standard has been prepared by the European Association of Aerospace Manufacturers (AECMA). Aft
7、er enquiries and votes carried out in accordance with the rules of this Association, this .Standards has successively received the approval of the I National Associations and the Official Services of the member countries of AECMA, prior to its presentation to CEN. National Standards indentical to th
8、is European Standard shall be published at the latest by 1992-09-30 and conflicting national standards shall be withdrawn at the latest by 1992-09-30. According to the Common CEN/CENELEC Rules, the following countries are bound to implement this European Standard : Austria, Belgium, Denmark, Finland
9、 France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Poctugal, Spain, Sweden, Switzerland and United Kingdom. c- CEN EN*2744 92 W 3404589 0024525 b m 1 This standard specifies the preferred test temperatures for non-metallic materials. Scope and field of application 2
10、 References EN 2743, Aerospace series - Reinforced plastics - Standard procedures for conditioning prior to testing )l. 3 Temperatures and tolerances See table. 1) Published as AECMA pre-standard at the date of publication of the present standard. Page 4 EN 27L4 : 1992 - L4J - 196 - 161 - 70 - 6511
11、 6211 - 55 - 541) - 501) - 40 - 351) - 25 - 201) - 181) - 151) - 10 O c 2 1) 5 f 101) - 151) f 232) f 25 - 30 - 37 + 38 - 40 - 45 - 501) - 55 - 60 - 70 - 80 - 82 - 83 - 90 - 100 CEN EN*Z744 32 I 3404587 0024526 8 I I I f 3) ! i d t3 05 10 20 25 - 1301) - 135 - 1401) - 150 - 1551) i 160 -i- 175 - 18
12、0 - 190) - 200 I 2201) A 225 - 23011 i 260 7 275 - 300 + 3151) - 3201) - 350 - 400 k3 ,5 f 450 - 500 - 600 - 6301) - 700 - 750 1) x 10 - 800 - 900 - 9501) - 1000 = 15 Notes : 1) Temperatures for particular fields. 2) For the temperatures of the standard atmospheres for conditioning prior to testing, EN 2743 specifies an ordinary tolerance of f 2 K and a reduced tolerance of = 1 K. The same tolerances apply to the temperature of the standard atmosphere for testing. 31 Below - 75 OC, the tolerances essentially depend on the equipment used. - . -li
