1、BSI Standards PublicationBS ISO 19095-4:2015Plastics Evaluation ofthe adhesion interfaceperformance in plastic-metalassembliesPart 4: Environmental conditions fordurabilityBS ISO 19095-4:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 19095-4:2015.The UK p
2、articipation in its preparation was entrusted to TechnicalCommittee PRI/52, Adhesives.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 contract. Users are responsible for its
3、 correctapplication. The British Standards Institution 2015. Published by BSI StandardsLimited 2015ISBN 978 0 580 85349 4ICS 83.180Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strate
4、gy Committee on 31 August 2015.Amendments issued since publicationDate Text affectedBS ISO 19095-4:2015 ISO 2015Plastics Evaluation of the adhesion interface performance in plastic-metal assemblies Part 4: Environmental conditions for durabilityPlastiques valuation des performances de linterface dad
5、hrence dans les assemblages plastique-mtal Partie 4: Conditions environnementales pour la durabilitINTERNATIONAL STANDARDISO19095-4First edition2015-08-01Reference numberISO 19095-4:2015(E)BS ISO 19095-4:2015ISO 19095-4:2015(E)ii ISO 2015 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2015, Pub
6、lished in SwitzerlandAll rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permis
7、sion can be requested from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCh. de Blandonnet 8 CP 401CH-1214 Vernier, Geneva, SwitzerlandTel. +41 22 749 01 11Fax +41 22 749 09 47copyrightiso.orgwww.iso.orgBS ISO 19095-4:2015ISO 19095-4:2015(E)F
8、oreword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 14 Test specimen 44.1 Form of test specimen. 44.2 Condition of test specimen . 45 Test procedure 45.1 Temperature dependence test . 45.1.1 Apparatus . 45.1.2 Test procedure . 55.1.3 Presentation of result 55.2 Therm
9、al shock test 55.2.1 Apparatus . 55.2.2 Test procedure . 55.2.3 Presentation of result 65.3 Temperature/Humidity cyclic test . 65.3.1 Apparatus . 65.3.2 Test procedure . 65.3.3 Presentation of result 75.4 High temperature and high humidity test . 75.4.1 Apparatus . 75.4.2 Test procedure . 75.4.3 Pre
10、sentation of result 85.5 Salt mist test 85.5.1 Apparatus . 85.5.2 Test procedure . 85.5.3 Presentation of result 85.6 Fatigue test . 85.6.1 Principle 85.6.2 General conditions . 85.6.3 Apparatus . 85.6.4 Test procedure . 95.7 Report . 9Annex A (normative) Staircase method (or Dixon and Moods method
11、) .10Annex B (normative) Data reclassification method .12 ISO 2015 All rights reserved iiiContents PageBS ISO 19095-4:2015ISO 19095-4:2015(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of prepar
12、ing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in li
13、aison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Di
14、rectives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).Attention is drawn to the possibility that
15、some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent decl
16、arations received (see www.iso.org/patents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information a
17、bout ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 61, Plastics, Subcommittee SC 11, Products.ISO 19095 consists of the following parts, under the general
18、title Plastics Evaluation of the adhesion interface performance in plastic-metal assemblies:Part 1: Guidelines for the approachPart 2: Test specimensPart 3: Test methodsPart 4: Environmental conditions for durabilityiv ISO 2015 All rights reservedBS ISO 19095-4:2015ISO 19095-4:2015(E)IntroductionStr
19、uctures of heterogeneous materials are being manufactured in the automobiles and aerospace industry sectors where higher safety margins are required.The existing test methods are not appropriate because the evaluation of the adhesive interface is difficult as the polymer material has a relatively lo
20、w mechanical strength and therefore fractures outside the joints. Therefore, it is necessary to develop a methodology for the evaluation of the adhesive interfaces.A test method to evaluate accurately the adhesion interface performance or standardization of long-term evaluation under harsh environme
21、nts is also necessary.The method in ISO 19095 is intended to ensure that the integrity of the joint is realized through the interface and that traceability of the value improves the data comparison.This part of ISO 19095 defines the conditions to evaluate the long-term durability. ISO 2015 All right
22、s reserved vBS ISO 19095-4:2015BS ISO 19095-4:2015Plastics Evaluation of the adhesion interface performance in plastic-metal assemblies Part 4: Environmental conditions for durabilitySAFETY STATEMENT Persons using this part of ISO 19095 should be familiar with normal laboratory practice, if applicab
23、le. This part of ISO 19095 does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user to establish appropriate safety and health practices and to ensure compliance with any regulatory conditions. It is recognized that some of the mat
24、erials permitted in this part of ISO 19095 might have a negative environmental impact. As technological advances lead to more acceptable alternatives for such materials, they will be eliminated to the greatest extent possible. At the end of the test, care should be taken to dispose of all waste in a
25、n appropriate manner in accordance with local regulations.1 ScopeThis part of ISO 19095 specifies the environmental conditions to evaluate the durability for the adhesion interface performance in plastic-metal assemblies.2 Normative referencesThe following documents, in whole or in part, are normati
26、vely referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 472, Plastics VocabularyISO 19095-1:2015, Plastics Evaluation
27、 of the adhesion interface performance in plastic-metal assemblies Part 1: Guideline for the approachISO 19095-2, Plastics Evaluation of the adhesion interface performance in plastic-metal assemblies Part 2: Test specimensISO 19095-3, Plastics Evaluation of the adhesion interface performance in plas
28、tic-metal assemblies Part 3: Test methodsIEC 60068-2-11, Basic environmental testing procedures Part 2-11: Tests Test Ka: Salt mist3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 472 and the following apply.3.1shear stress stress determined by dividin
29、g the force by the bonded surface areaNote 1 to entry: It is expressed in megapascals (MPa).INTERNATIONAL STANDARD ISO 19095-4:2015(E) ISO 2015 All rights reserved 1BS ISO 19095-4:2015ISO 19095-4:2015(E)3.2static shear stress Raverage static shear stress at rupture as determined by ISO 4587Note 1 to
30、 entry: It is expressed in megapascals (MPa).3.3stress cyclesmallest part of the stress/time function which is repeated at regular intervalsNote 1 to entry: It is of sinusoidal form (see Figure 1) with undulating shear.Note 2 to entry: Cyclic stress can be considered to be the superposition of an al
31、ternating stress on a static stress which is the mean stress.Figure 1 Fatigue stress cycle3.4maximum stressmaxgreatest algebraic value reached at regular intervals by the stressNote 1 to entry: It is expressed in megapascals (MPa).3.5minimum stressminsmallest algebraic value reached at regular inter
32、vals by the stressNote 1 to entry: This stress shall always be positive and is expressed in megapascals (MPa).3.6mean stressmalgebraic mean of the maximum and minimum stressesNote 1 to entry: It is expressed as:2 ISO 2015 All rights reservedBS ISO 19095-4:2015ISO 19095-4:2015(E)mmax=+min23.7stress a
33、mplitudeaalternating stress equal to half the algebraic difference between the maximum and minimum stressesNote 1 to entry: It is expressed in megapascals (MPa).Note 2 to entry: It is expressed as:amax=min23.8fatigue limitDlimiting value which the stress amplitude aapproaches when the number of cycl
34、es becomes very large, for a given mean stress mNote 1 to entry: For some materials, stress amplitude versus the number of cycles does not reach a limiting value but decreases constantly on increasing the number of cycles. In this case, it is useful to determine a limit of endurance.3.9limit of endu
35、ranceD(NF)shear stress determined at a specific number of fault test cycles NFNote 1 to entry: It is expressed in megapascals (MPa).Note 2 to entry: The tests are carried out at constant m, and the results should be presented in the form: D(NF, m) in megapascals (MPa)3.10service lifeNnumber of stres
36、s cycles applied to a specimen until it has reached the chosen end of the testNote 1 to entry: Where it has not failed, the service life is not defined but is termed greater than the test duration.3.11cycle ration/Nratio of the number of applied cycles (n) to the service life (N)Note 1 to entry: Thi
37、s ratio is used in tests with load bearings, together with an SN curve (Woehlers curve).3.12SN curvecurve, allowing the resistance of the material to be seen, which indicates the relationship observed experimentally between service life N, shown conventionally in abscissae (logarithmic scale) and st
38、ress aor maxshown in ordinates in linear scale (typical curve in Figure 1)Note 1 to entry: This curve is established by keeping mconstant. The SN curve is defined by the relationship between amplitude of stress and service life. On this curve (Figure 2), we can distinguish ISO 2015 All rights reserv
39、ed 3BS ISO 19095-4:2015ISO 19095-4:2015(E)the endurance zone where, for a given stress, failures as well as non-failures for a number of fault test cycles NF can be identified, andthe fatigue zone where, for a given stress, all the specimens fail at the end of a number of cycles less than the number
40、 of conventional fault test cycles NFmentioned above.KeyPA polyamidePP polypropylenePPS polyphenylene sulfideFigure 2 Semi-logarithmic plots of typical SN curves of plastic-aluminium 5052 assemblies tested at 30 Hz at room temperature4 Test specimen4.1 Form of test specimenSee ISO 19095-2.4.2 Condit
41、ion of test specimenSee ISO 19095-3.5 Test procedure5.1 Temperature dependence test5.1.1 ApparatusSee ISO 19095-1.4 ISO 2015 All rights reservedBS ISO 19095-4:2015ISO 19095-4:2015(E)5.1.2 Test procedureAfter keeping the test specimen under the condition described in ISO 19095-1 for 48 h, select the
42、corresponding temperature groups from (40 3) C, (20 3) C, (0 2) C, (40 2) C, (60 2) C, (80 2) C, (100 2) C, (120 3) C, (140 2) C, (160 3) C, and (180 2) C and carry out the test. The test specimen shall be kept at the specified temperature for 10 min.5.1.3 Presentation of resultBased on the strength
43、 in respective temperature obtained in 5.2, develop a strength-temperature line graph. Figure 3 shows an example.KeyX temperature (C)Y strength (MPa)Figure 3 Sample line graph of strength-temperature5.2 Thermal shock test5.2.1 ApparatusSee ISO 19095-1.5.2.2 Test procedureAfter keeping the test speci
44、men under the condition described in ISO 19095-1 for 48 h, leave the test specimen in a constant low temperature chamber preset to (40 3) C for (2 0,5) h.Take the test specimen out from the chamber and place it immediately in the chamber adjusted to the high temperature shown in Table 1, and repeat
45、the temperature cycle as specified in Table 1 and Figure 4.Respectively, after 10, 50, 100, 200, 500, 1 000 repetitions of the temperature cycle, take the test specimen out from the chamber, leave it under the condition described in ISO 19095-1 for more than 2 h, and carry out the test. ISO 2015 All
46、 rights reserved 5BS ISO 19095-4:2015ISO 19095-4:2015(E)Table 1 Conditions of thermal shock testClassificationPreset temperature Exposure timeHigh Low T2, T4 T1, T3 80 C40 C 1 h 5 min or less 120 C 150 CFigure 4 Thermal shock test pattern5.2.3 Presentation of resultBased on the performance result af
47、ter each number of repetitions obtained in 5.1.2, develop a strength-repetitions line graph.5.3 Temperature/Humidity cyclic test5.3.1 ApparatusSee ISO 19095-1.5.3.2 Test procedureAfter keeping the test specimen under the condition described in ISO 19095-1 for 48 h, place the piece in a constant temp
48、erature and humidity chamber and set the chamber to (25 2) C and (65 20) % of humidity. Leave it under such condition for (2,5 0,5) h and conduct the test in accordance with the patterns specified in Figure 5.6 ISO 2015 All rights reservedBS ISO 19095-4:2015ISO 19095-4:2015(E)Respectively, after 2,
49、5, 10, 20 repetitions of each pattern, take the test piece out from the chamber, leave it under the condition for between 1 h and 2 h as described in ISO 19095-1, and carry out the test.KeyX timeY temperature (C)1 (60 2) C, (90 5) % RH2 45 2) C, (95 5) % RH3 (10 2) C4 (23 2) C, (65 2) % RH5 interval without humidity controlFigure 5 Temperature/Humidity cyclic test pattern5.3.3 Presentation of
