1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Plastics - Poly(vinyl chloride) (PVC) based profiles - Determination of the strength of welded corners and T-jointsBS EN 514:2018National forewordThis British Standard is the UK implementation of EN 514:2018. It superse
2、des BS EN 514:2000, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee PRI/21, Testing of plastics.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the neces
3、sary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2018 Published by BSI Standards Limited 2018ISBN 978 0 580 94817 6ICS 91.060.50; 83.140.99Compliance with a British Standard cannot confer immunity from legal obligations.This British
4、Standard was published under the authority of the Standards Policy and Strategy Committee on 28 February 2018.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 514:2018EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 514January 2018ICS 83.140.99 Supersedes EN 514
5、:2000EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGCEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2018 CEN Ref. No. EN 514:2018: EAll rights of exploitation in any form and by any means reserved worldwide for CEN national MembersP
6、lastics - Poly(vinyl chloride) (PVC) based profiles - Determination of the strength of welded corners and T-jointsPlastiques - Profils base de poly(chlorure de vinyle) (PVC) - Dtermination de la rsistance des assemblages souds en angle et en TKunststoffe - Profile auf Basis von Polyvinylchlorid (PVC
7、) - Bestimmung der Festigkeit verschweiter Ecken und T-VerbindungenThis European Standard was approved by CEN on 6 December 2017.CEN 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 standar
8、d 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 member.This European Standard exists in three official versions (English, French, German). A version in any o
9、ther language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic
10、, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.Engli
11、sh VersionEN 514:2018 (E)European foreword 31 Scope . 42 Normative references 43 Terms and definitions . 44 Principle 45 Apparatus . 45.1 Tensile or compression testing machine 45.2 Test arrangements . 46 Test specimen 86.1 Welding of the corner test specimen . 86.2 Welding of the T-joint test speci
12、men 86.3 Tensile bending test specimen 96.4 Compression bending test specimen . 96.5 Number of test specimens . 97 Conditioning 98 Procedure. 98.1 Test temperature . 98.2 Tensile bending test . 108.3 Compression bending test 109 Test report 10Annex A (normative) Method for the calculation of the fai
13、lure stress .11Bibliography .132Contents PageBS EN 514:2018EN 514:2018 (E)European forewordThis document (EN 514:2018) has been prepared by Technical Committee CEN/TC 249 “Plastics”, the secretariat of which is held by NBN.This European Standard shall be given the status of a national standard, eith
14、er by publication of an identical text or by endorsement, at the latest by July 2018, and conflicting national standards shall be withdrawn at the latest by July 2018.Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN not be held
15、 responsible for identifying any or all such patent rights.This document supersedes EN 514:2000.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cypru
16、s, 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, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
17、 United Kingdom.3BS EN 514:2018EN 514:2018 (E)1 ScopeThis European Standard specifies a tensile bending method and a compression bending method for determining the failure stress of welded corners and welded T-joints made from unplasticized poly(vinyl chloride) (PVC-U) profiles.It is applicable to P
18、VC based profiles used for the fabrication of windows and doors.2 Normative referencesThere are no normative references in this document.3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.ISO and IEC maintain terminological databases for use in standa
19、rdization at the following addresses: IEC Electropedia: available at http:/www.electropedia.org/ ISO Online browsing platform: available at http:/www.iso.org/obp3.1failure loadload at which yield occurs, or, if yield does not occur, load at which the test specimen breaks4 PrincipleWelded corners and
20、 T-joints made from unplasticized poly(vinyl chloride) (PVC-U) profiles are subjected to a tensile bending or compression bending test at specified temperature and test speed.The failure load is recorded and the failure stress is calculated.5 Apparatus5.1 Tensile or compression testing machineTensil
21、e or compression testing machines are used with the following specifications:a) measuring range of load: 2 kN to 20 kN;b) load indication with zero point setting and peak recording;c) measurement accuracy: 3 %;d) test speed: (50 5) mm/min.5.2 Test arrangements5.2.1 Corner weld samples for tensile be
22、nding test (see Figure 1)4 BS EN 514:2018EN 514:2018 (E)Dimensions in millimetresKey1 clamping device2 rigid support over a minimum clamping length of 400 mm3 frame4 optional support block (5 0,5) mmL distance between the corner in the highest flange and the point of application of the loadF load ap
23、plied on the profileFigure 1 Example of a test rig for a tensile bending test of corners5.2.2 T-joint weld samples for tensile bending test (see Figure 2)5BS EN 514:2018EN 514:2018 (E)Dimensions in millimetresKey1 clamping device 2 rigid support over a minimum clamping length of 400 mm 3 frame 4 opt
24、ional support block (5 0,5) mm L distance between the corner in the highest flange and the point of application of the load F load applied on the profile Figure 2 Example of a test rig for a tensile bending test of T-joints5.2.3 Corner weld samples for compression bending test (see Figure 3)6 BS EN
25、514:2018EN 514:2018 (E)Dimensions in millimetresKeyLiinside length of the legsLnlength of the neutral axis of the profilee distance between the inside of the section and the neutral axisa distance between the axes of rotation of the carriagesF load applied on the cornerFigure 3 Example of a test rig
26、 for compression bending test of corners joints5.2.4 T-joint weld samples for compression bending test (see Figure 4)7BS EN 514:2018EN 514:2018 (E)Dimensions in millimetresKeyLiinside length of the legsLnlength of the neutral axis of the profilee distance between the inside of the section and the ne
27、utral axisa distance between the axes of rotation of the carriagesF load applied on the cornerFigure 4 Example of a test rig for compression bending testing of T-joints6 Test specimen6.1 Welding of the corner test specimenThe test specimen is a welded corner with an angle of (90 1).Two lengths of pr
28、ofile cut at 45 are heat welded.6.2 Welding of the T-joint test specimenThe test specimen is a welded T-joint with an angle of (90 1). The T-joint is fabricated by heat welding one piece of, for instance, sash or outer frame profile at least 500 mm long and one piece of, for instance, transom profil
29、e at least 400 mm long.Before welding the sash or outer frame profile is notched at 2 45 to a depth in accordance with Formula (1):0,5 (w s) (1)wherew is width of transom profile,s is welder head stroke.The transom profile end is sawn into a symmetrical 90 point.8 BS EN 514:2018EN 514:2018 (E)The po
30、sition of the 90 notch in the sash or frame profile is such as to leave a minimum 400 mm leg measured from the top of the transom profile (see Figure 2).NOTE The document DVS 2207-25:198910, Clauses 2 to 8, contains information about welding procedures.6.3 Tensile bending test specimen6.3.1 The insi
31、de leg length of the test specimen for corner testing shall be at least 400 mm (see Figure 1).6.3.2 The T-joint test specimen is fabricated with the sash or frame arms of inside length at least 400 mm and 100 mm, and the transom or mullion stem length at least 400 mm (see Figure 2).6.4 Compression b
32、ending test specimen6.4.1 The legs of the corner test specimen are cut at an angle of (45 1) in such a way that the neutral axes of the end sections are located vertically over the axes of rotation of the carriage (approximately the middle of the main chamber of the profile) (see Figure 3). The insi
33、de length of the legs Liin millimetres is obtained from the following formulae:Li= Ln 2e (2)(3)Li= 283 2e (4)whereLnis the length of the neutral axis of the profile in millimetres,e is the distance between the inside of the section and the neutral axis in millimetres.6.4.2 The short arm of the T-joi
34、nt test specimen is cut off level with the outer face of the stem to produce a 90 corner. Further preparation of the corner is in accordance with 6.4.1 (see Figure 4).6.5 Number of test specimensA minimum of three samples per profile type, all made on the same welder head, shall be tested to obtain
35、a mean value.7 ConditioningThe test specimens shall be conditioned at (23 5) C for at least two hours immediately prior to testing.8 Procedure8.1 Test temperatureThe test is carried out at a temperature of (23 5) C.9BS EN 514:2018EN 514:2018 (E)8.2 Tensile bending test8.2.1 Clamp the test specimen i
36、n the apparatus as shown in Figures 1 or 2. Contoured support blocks may be used, if necessary, to limit twisting.8.2.2 Apply the load to the test specimen in such a way that the speed of application is 50 mm/min.8.2.3 Continue until the test specimen fails.8.2.4 Note the failure load Ftand calculat
37、e the failure stress in accordance with Annex A.8.3 Compression bending test8.3.1 Place the test specimen on the trolley as shown in Figures 3 or 4. In order to avoid excessive deflection, the open frame end of the T-joint can be supported in the corner area by inserting a cavity filling block (e.g.
38、 a piece of metal reinforcement or a wooden block).8.3.2 Apply the load to the test specimen in such a way that the speed of application is 50 mm/min.8.3.3 Continue until the test specimen fails.8.3.4 Note the failure load Fcand calculate the failure stress in accordance with Annex A.9 Test reportTh
39、e test report shall include the following information:a) reference to this document (i.e. EN 514);b) the name of the test laboratory;c) full identification of the profile(s);d) identification of the joint:1) the type of the joint (corner or T-joint);2) the presence or absence of welding sprue (bead)
40、;3) if more than one welding head is in use, the nominated head;e) the date of testing;f) the welding conditions;g) the test method (tensile bending or compression bending);h) for compression bending testing the inside length of the leg of the test specimen;i) the test temperature;j) the failure loa
41、d for every test specimen;k) the calculated failure stress for every test specimen and the average failure stress;l) all operating details not specified in this document, as well as any incidents likely to have influenced the results.10 BS EN 514:2018EN 514:2018 (E)Annex A (normative) Method for the
42、 calculation of the failure stressA.1 Tensile bending testThe failure stress of a welded corner or T-joint depends on the failure load, the profile geometry and the test arrangement (see Figures 1 or 2). It is calculated by the formula:(A.1)whereFtis the failure load determined by tensile bending te
43、sting, expressed in N;L is the distance between the corner in the highest flange and the point of application of the load, expressed in mm;W is the moment of resistance in the loading direction = I/e, expressed in mm3;I is the moment of inertia about the neutral axis ZZ (see Figure A.1) of the cross
44、 section of the profile given by the manufacturer, expressed in mm4; for T-joints with different profiles, the lower moment of inertia shall be used;e is the distance between the critical point A and the neutral axis ZZ (see Figure A.1), expressed in mm;tis the failure stress by tensile bending, exp
45、ressed in N/mm2.A.2 Compression bending testThe failure stress of a welded corner or T-joint depends on the failure load, the profile geometry and the test arrangement (see Figure 3 or 4). It is calculated by the formula:(A.2)whereFcis the compression bending failure load, expressed in N;W is the mo
46、ment of resistance in the loading direction = I/e, expressed in mm3;I is the moment of inertia about the neutral axis ZZ (see Figure A.1) of the cross section of the profile given by the manufacturer, expressed in mm4; for T-joints with different profiles, the lower moment of inertia shall be used;e
47、 is the distance between the critical point A and the neutral axis ZZ (see Figure A.1), expressed in mm;a is the distance between the axes of rotation of the carriages = (400 2) mm;cis the failure stress by compression bending, expressed in N/mm2.11BS EN 514:2018EN 514:2018 (E)Key1 direction of load
48、ingA points of maximum stresse distance between the critical point A and the neutral axis ZZZZ neutral axisFigure A.1 Position of point of maximum bending stress12 BS EN 514:2018EN 514:2018 (E)Bibliography1 DVS 2207-25:1989-10, Welding of thermoplastics Heated tool butt welding Welding of casements
49、sections made from PVC-U1)1) Available from: www.beuth.de13BS EN 514:2018This page deliberately left blankBSI is the national body responsible for preparing British Standards and other standards-related publications, information and services.BSI is incorporated by Royal Charter. British Standards and other standardization products are published by BSI Standards Limited.British Standards Institution (BSI)About usWe bring together business, industry, government, consumers, innovators and others to shape their
