1、BRITISH STANDARD AEROSPACE SERIES BS EN 2591-515:2005 Elements of electrical and optical connection Test methods Part 515: Hydrolytic stability The European Standard EN 2591-515:2005 has the status of a British Standard ICS 49.060 BS EN 2591-515:2005 This British Standard was published under the aut
2、hority of the Standards Policy and Strategy Committee on 10 February 2006 BSI 10 February 2006 ISBN 0 580 47802 5 National foreword This British Standard is the official English language version of EN 2591-515:2005. The UK participation in its preparation was entrusted by Technical Committee ACE/6,
3、Aerospace avionic electrical and fibre optic technology, to Subcommittee ACE/6/-/3, Aerospace Connectors, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, a
4、nd keep UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European
5、 publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all t
6、he necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 5 and a
7、 back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN2591515 October2005 ICS49.060 EnglishVersion AerospaceseriesElementsofelectricaland
8、opticalconnection TestmethodsPart515:Hydrolyticstability SriearospatialeOrganesdeconnexionlectriqueet optiqueMthodesdessaisPartie515:Stabilit hydrolytique LuftundRaumfahrtElektrischeundoptische VerbindungselementePrfverfahrenTeil515: HydrolytischeStabilitt ThisEuropeanStandardwasapprovedbyCENon19Sep
9、tember2005. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheCentralSecret
10、ariatortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheCentralSecretariathasthesamestatusast heofficial versions. CENmembersarethenationalstandard
11、sbodiesofAustria,Belgium,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France, Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal, Slovakia, Slovenia,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROP
12、ENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2005CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN2591515:2005:EEN 2591-515:2005 2 Contents Page Foreword 3 1 Scope .4 2 Normative references .4 3 Prepara
13、tion of specimens 4 4 Details 4 5 Test method.4 6 Requirement 5 7 Final measurement (if applicable)5 EN 2591-515:2005 3 Foreword This European Standard (EN 2591-515:2005) has been prepared by the European Association of Aerospace Manufacturers - Standardization (AECMA-STAN). After enquiries and vote
14、s carried out in accordance with the rules of this Association, this Standard has received the approval of the National Associations and the Official Services of the member countries of AECMA, prior to its presentation to CEN. This European Standard shall be given the status of a national standard,
15、either by publication of an identical text or by endorsement, at the latest by April 2006, and conflicting national standards shall be withdrawn at the latest by April 2006. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/
16、or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark,
17、 Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. 4 1 Scope This standard specifies a test method for determination of the r
18、elative rate of absorption of water by plastic or composite material. Its derived from ASTM D 570 - 98 and it shall be used together with EN 2591-100. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edit
19、ion cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 2591-100, Aerospace series Elements of electrical and optical connection Test methods Part 100: General. EN 2591-101, Aerospace series Elements of electrical and optical co
20、nnection Test methods Part 101: Visual examination. ASTM D 570 98, Standard Test Method for Water Absorption of Plastics. 1)3 Preparation of specimens According to technical specification of product. 4 Details Method: A, B or C. Maximum percentage increased weight and/or soluble material lost. 5 Tes
21、t method Three different test methods can be used according to the product standard requirement. 5.1 Conditioning The specimen shall be dried in an oven for 24 h at (50 3) C, cooled in a desiccator and immediately weighed to the nearest 0,001 g. 5.2 Method A: Long-term immersion to determine the tot
22、al water absorbed when substantially saturated The conditioned specimens shall be placed in a container of distilled water maintained at temperature of (23 1) C, and shall rest on edge and be entirely immersed. At the end of 24 h they shall be removed from the water, wiped free of surface moisture w
23、ith a dry cloth, weighed to the nearest 0,001 g immediately, and then replaced in the water. The weightings shall be repeated at the end of the first week and every two weeks thereafter until the increase in weight per two-week period, as shown by three consecutive weightings, 1) Published by: ASTM
24、International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA, 19428-2959 USA EN 2591-515:20055 averages less than 1 % of the total increase in weight or 5 mg, whichever is greater, the specimen shall then be considered substantially saturated. The difference between the substantially sat
25、urated weight and the dry weight shall be considered as the water absorbed when substantially saturated. 5.3 Method B: Two hours boiling water immersion The conditioned specimens shall be placed in a container of boiling distilled water, and shall be supported on edge and be entirely immersed. At th
26、e end of (120 4) min, the specimens shall be removed from the water, and cooled in distilled water maintained at room temperature. After (15 1) min, the specimens shall be removed from the water, one at a time, all surface water removed with a dry cloth, and the specimens weighed to the nearest 0,00
27、1 g immediately. 5.4 Method C: One half hour boiling water immersion For all thickness of materials having a relatively high rate of absorption and for thin specimens of other materials which shows a significant weight increase in one half hour, the specimens shall be tested as described in 5.3, exc
28、ept that the time of immersion shall be reduced to (30 1) min. 5.5 Reconditioning The specimens, after immersion, shall be weighed, and then reconditioned for the same time and temperature as used in the original drying period. They shall then be cooled in a desiccator and immediately reweighed.If t
29、he reconditioned weight is lower than the conditioned weight, the difference shall be considered as water-soluble matter lost during the immersion test. For such materials, the water-absorption value shall be taken as the sum of the increase in weight on immersion and of the weight of the water-solu
30、ble matter. 6 Requirement The percentage of water absorbed is the sum of the values calculated below and shall be in accordance with the values specified in the product standard. 6.1 Percentage increase weight Percentage increase in weight during immersion, calculated to the nearest 0,01 % as follow
31、s: Increase in weight, % = weight d Conditioneweight d conditione weight Wet - 100 6.2 Percentage soluble material lost Percentage of soluble material lost during immersion, if determined, calculated to the nearest 0,01 % as follows: Soluble matter lost, % = weight d Conditioneweight ned reconditio
32、weight d Conditione - 100 7 Final measurement (if applicable) Visual examination (see EN 2591-101). EN 2591-515:2005BS EN 2591-515:2005 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It pres
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