1、BS EN 16603-32-08:2016Space engineering MaterialsBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN 16603-32-08:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN16603-32-08:2016. It supersedes BS EN 14607-8:2004 which iswit
2、hdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee ACE/68, Space systems and operations.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contr
3、act. Users are responsible for its correctapplication. The British Standards Institution 2016. Published by BSI StandardsLimited 2016ISBN 978 0 580 93132 1ICS 49.140Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority
4、 of theStandards Policy and Strategy Committee on 31 August 2016.Amendments issued since publicationDate Text affectedBS EN 16603-32-08:2016EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 16603-32-08 August 2016 ICS 49.140 Supersedes EN 14607-8:2004 English version Space engineering - Materials
5、 Ingnierie spatiale - Matriaux Raumfahrttechnik - Werkstoffe This European Standard was approved by CEN on 22 May 2016. CEN and CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national stan
6、dard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN and CENELEC member. This European Standard exists in three official versions (English, French, German). A
7、version in any other language made by translation under the responsibility of a CEN and CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN and CENELEC members are the national standards bodies and national electrot
8、echnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slova
9、kia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN/CENELEC All rights of exploitation in any form and by any means reserved worldwide for CEN national Members and for CENELEC Members. Ref. No. EN 16603-32-08
10、:2016 E BS EN 16603-32-08:2016EN 16603-32-08:2016 (E) 2 Table of contents European Foreword . 4 1 Scope . 5 2 Normative references . 6 3 Terms, definitions and abbreviated terms 7 3.1 Terms and definitions from other standards 7 3.2 Terms specific to the present standard . 7 3.3 Abbreviated terms. 8
11、 3.4 Nomenclature . 8 4 Requirements 10 4.1 General . 10 4.2 Functionality . 10 4.2.1 Strength 10 4.2.2 Elastic modulus . 10 4.2.3 Fatigue 11 4.2.4 Fracture toughness . 11 4.2.5 Creep 11 4.2.6 Micro-yielding 11 4.2.7 Coefficient of thermal expansion and coefficient of moisture expansion . 12 4.2.8 C
12、orrosion fatigue . 12 4.2.9 Hydrogen embrittlement 13 4.2.10 Mechanical contact surface effects . 13 4.2.11 Hydrogen, Oxygen and Nitrogen uptake . 13 4.3 Interfaces 13 4.3.1 General . 13 4.3.2 Anodizing 13 4.3.3 Chemical conversion . 14 4.3.4 Metallic coatings (overlay and diffusion) 14 4.3.5 Hard c
13、oatings 14 4.3.6 Thermal barriers 14 BS EN 16603-32-08:2016EN 16603-32-08:2016 (E) 3 4.3.7 Moisture barriers . 14 4.3.8 Coatings on CFRP 15 4.3.9 Organic coatings as paint 15 4.4 Joining (mechanical fastening) 15 4.4.1 General . 15 4.4.2 Bolted joints 15 4.4.3 Riveted joints 16 4.4.4 Inserts . 16 4.
14、5 Design 16 4.5.1 Metallic design allowables . 16 4.5.2 Composite design allowables 16 4.6 Verification 18 4.6.1 Metallic materials 18 4.6.2 Composite materials - laminates . 18 4.6.3 Test methods on metals 19 4.6.4 Test methods on composites 19 4.6.5 Non-destructive inspection 21 4.7 Data exchange
15、. 21 Bibliography . 22 BS EN 16603-32-08:2016EN 16603-32-08:2016 (E) 4 European Foreword This document (EN 16603-32-08:2016) has been prepared by Technical Committee CEN/CLC/TC 5 “Space”, the secretariat of which is held by DIN. This standard (EN 16603-32-08:2016) originates from ECSS-E-ST-32-08C Re
16、v.1. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by February 2017, and conflicting national standards shall be withdrawn at the latest by February 2017. Attention is drawn to the possibility that
17、 some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 14607-8:2004. The main changes with respect to EN 14607-8:2004 are listed below: - new EN number and
18、 modified title, - Reorganization of the content of the document to separate descriptive text and requirements, including clarification, modification of requirements and implementation of change requests, - Alignment of the three Standards EN 16603-32-08 (based on ECSS-E-ST-32-08C Rev.1), EN 16602-7
19、0 (based on ECSS-Q-ST-70C Rev.1) and EN 16602-70-71 (based on ECSS-Q-ST-70-71C), - Deletion of deletion of clauses 4.2, 4.4, 4.9, 4.10, 4.12, 4.13 and Table 1. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association. This docume
20、nt has been developed to cover specifically space systems and has therefore precedence over any EN covering the same scope but with a wider domain of applicability (e.g. : aerospace). According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries a
21、re bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, P
22、ortugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 16603-32-08:2016EN 16603-32-08:2016 (E) 5 1 Scope ECSS-E-ST-32-08 specifies the mechanical engineering requirements for materials. This Standard also encompasses the mechanical effects of the natur
23、al and induced environments to which materials used for space applications can be subjected. This standard specifies requirements for the establishment of the mechanical and physical properties of the materials to be used for space applications, and the verification of these requirements. Verificati
24、on includes destructive and non-destructive test methods. Quality assurance requirements for materials (e.g. procurement and control) are covered by ECSS-Q-ST-70. This standard may be tailored for the specific characteristics and constrains of a space project in conformance with ECSS-S-ST-00. BS EN
25、16603-32-08:2016EN 16603-32-08:2016 (E) 6 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this ECSS Standard. For dated references, subsequent amendments to, or revision of any of these publications, do not a
26、pply. However, parties to agreements based on this ECSS Standard are encouraged to investigate the possibility of applying the more recent editions of the normative documents indicated below. For undated references, the latest edition of the publication referred to applies. EN reference Reference in
27、 text Title EN 16601-00-01 ECSS-S-ST-00-01 ECSS system - Glossary of terms EN 16603-32 ECSS-E-ST-32 Space engineering - Structural EN 16602-70 ECSS-Q-ST-70 Space product assurance - Materials, mechanical parts and processes EN 16602-70-37 ECSS-Q-ST-70-37 Space product assurance - Determination of th
28、e susceptibility of metals to stress-corrosion cracking EN 16602-70-71 ECSS-Q-ST-70-71 Space product assurance - Material, processes and their data selection EN 4179:2005 Aerospace series - Qualification and approval of personnel for non-destructive testing BS EN 16603-32-08:2016EN 16603-32-08:2016
29、(E) 7 3 Terms, definitions and abbreviated terms 3.1 Terms and definitions from other standards a. For the purpose of this standard, the terms and definitions from ECSS-S-ST-00-01 and ECSS-E-ST-32 apply, in particular for the followings: 1. A-basis design allowable (A-value) 2. B-basis design allowa
30、ble (B-value) 3. corrosion 3.2 Terms specific to the present standard 3.2.1 composite sandwich construction panels composed of a lightweight core material, such as honeycomb, foamed plastic, and so forth, to which two relatively thin, dense, high-strength or high stiffness faces or skins are adhered
31、 3.2.2 material design allowable material property that has been determined from test data on a probability basis and has been chosen to assure a high degree of confidence in the integrity of the completed structure 3.2.3 micro-yield applied force to produce a residual strain of 1 10-6mm/m along the
32、 tensile or compression loading direction 3.2.4 polymer high molecular weight organic compound, natural or synthetic, with a structure that can be represented by a repeated small unit, the mer NOTE E.g. polyethylene, rubber, and cellulose. BS EN 16603-32-08:2016EN 16603-32-08:2016 (E) 8 3.3 Abbrevia
33、ted terms For the purpose of this standard, the abbreviated terms from ECSS-S-ST-00-01 and the following apply: Abbreviation Meaning ASTM American Society for Testing Materials CFRP carbon fibre reinforced plastic CMC ceramic matrix composites CME coefficient of moisture expansion CTE coefficient of
34、 thermal expansion DRD document requirements definition EB electron beam EN European Standard Kic plane strain critical stress intensity factor Kiscc plane strain critical stress intensity factor for a specific environment LEO low Earth orbit MIG metal inert gas MMC metal matrix composite NDE non-de
35、structive evaluation NDI non-destructive inspection NDT non-destructive test PTFE polytetrafluoroethylene SCC stress-corrosion cracking STS space transportation system TIG tungsten inert gas UD uni-directional UV ultra violet 3.4 Nomenclature The following nomenclature applies throughout this docume
36、nt: a. The word “shall” is used in this standard to express requirements. All the requirements are expressed with the word “shall”. b. The word “should” is used in this standard to express recommendations. All the recommendations are expressed with the word “should”. NOTE It is expected that, during
37、 tailoring, recommendations in this document are either converted into requirements or tailored out. c. The words “may” and “need not” are used in this standard to express positive and negative permissions, respectively. All the positive BS EN 16603-32-08:2016EN 16603-32-08:2016 (E) 9 permissions ar
38、e expressed with the word “may”. All the negative permissions are expressed with the words “need not”. d. The word “can” is used in this standard to express capabilities or possibilities, and therefore, if not accompanied by one of the previous words, it implies descriptive text. NOTE In ECSS “may”
39、and “can” have completely different meanings: “may” is normative (permission), and “can” is descriptive. e. The present and past tenses are used in this standard to express statements of fact, and therefore they imply descriptive text. BS EN 16603-32-08:2016EN 16603-32-08:2016 (E) 10 4 Requirements
40、4.1 General a. The supplier shall perform the review of materials for structures to be used in space at Materials, Mechanical Parts and Processes Control Board (MPCB) in conformance with requirements from clause 4.2.3 of ECSS-Q-ST-70. NOTE This clause covers only structural subjects affecting materi
41、als for use in space projects. 4.2 Functionality 4.2.1 Strength a. The material strength shall be established for the worst combination of mechanical and thermal effects expected during its lifetime. NOTE The strength of a material is highly dependent on the direction as well as on the sign of the a
42、pplied load, e.g. axial tensile, transverse compressive, and others. Structural subjects are covered in ECSS-E-ST-32. 4.2.2 Elastic modulus a. For composites, the specified elastic modulus shall be verified by test on representative samples, in tension and in compression directions. NOTE 1 For metal
43、lic and alloy, it can be based on values certified by the manufacturer. NOTE 2 The elastic modulus defined as the ratio between the uniaxial stress and the strain (e.g. Youngs modulus, compressive modulus, shear modulus) is for metals and alloys weakly dependant on heat-treatment and orientation. Ho
44、wever, for fibre reinforced materials, the elastic modulus depends on the fibre orientation. BS EN 16603-32-08:2016EN 16603-32-08:2016 (E) 11 4.2.3 Fatigue a. For all components subject to alternating stresses, it shall be demonstrated that the degradation of material properties over the complete mi
45、ssion remains within the specified limits. NOTE Fatigue fracture can form in components which are subjected to alternating stresses. These stresses can exist far below the allowed static strength of the material. For fracture control, see ECSS-E-ST-32-01. 4.2.4 Fracture toughness a. For homogeneous
46、materials the Kic or Kiscc shall be measured according to procedures approved by the customer at MPCB. b. Metallic materials intended for use in corrosive surface environments shall be tested for fracture. NOTE The fracture toughness is a measure of the damage tolerance of a material containing init
47、ial flaws or cracks. The fracture toughness in metallic materials is described by the plain strain value of the critical stress intensity factor. The fracture toughness depends on the environment. For fracture control, see ECSS-E-ST-32-01. 4.2.5 Creep a. A risk analysis shall be performed to assess
48、the risk of creeping. b. If analysis specified in 4.2.5a confirms that creep can occur, the creep testing campaign to be performed shall be agreed with the customer at MPCB. NOTE Creep is a time-dependant deformation of a material under an applied load. It usually occurs at elevated temperature, alt
49、hough some materials creep at room temperature. If permitted to continue indefinitely, creep terminates in rupture. Extrapolations from simple to complex stress-temperature time conditions are difficult. 4.2.6 Micro-yielding a. A risk analysis shall be performed to assess the risk of micro-yielding. NOTE Micro-yielding can have an impact in the dimensional stability. b. When the analysis specified in 4.2.6a predicts that micro-yielding can occur in an element, the dimensional stability of the element shall be verified by testing. BS EN 16603-32-08:2016EN 16603-32-08:2016 (E
