EN 1411-1996 en Plastics Piping and Ducting Systems - Thermoplastics Pipes - Determination of Resistance to External Blows by the Staircase Method《塑料管和导管系统 热塑性塑料管 用梯级法测定抗外冲击应力的能力》.pdf

《EN 1411-1996 en Plastics Piping and Ducting Systems - Thermoplastics Pipes - Determination of Resistance to External Blows by the Staircase Method《塑料管和导管系统 热塑性塑料管 用梯级法测定抗外冲击应力的能力》.pdf》由会员分享，可在线阅读，更多相关《EN 1411-1996 en Plastics Piping and Ducting Systems - Thermoplastics Pipes - Determination of Resistance to External Blows by the Staircase Method《塑料管和导管系统 热塑性塑料管 用梯级法测定抗外冲击应力的能力》.pdf（14页珍藏版）》请在麦多课文档分享上搜索。

1、CEN ENs1411 96 3404589 0333599 348 BRITISH STANDARD Plastics piping and ducting systems - Thermoplastics pipes - Determination of resistance to external blows by the staircase method The European Standard EN 1411 : 1996 has the status of a British standard ICs 23.040.20 NO COPYING WITHOUT BSI PERMIS

2、SION EXCEPT AS PERMITTED BY COPYRIGHT LAW BS EN 1411 : 1996 BS 2782 : Part 11 : Method 1108B 1996 CEN EN*L4LL 96 = 3404589 0L33600 T BS EN 1411 : 1996 Committees responsible for this British Standard The preparation of this British Stanhd was entrusted to Technical Committee PRV61, Plastics piping s

3、ystems and components, upon which the following bodies were represented: British Gas plc British Plastics Federation British Plumbing Fttings Manufactured Association British Valve and Actuator Manufa.cturs Association Department of the Environment (British Board of Agrement) Depariment of the Envir

4、onment (Building Research Establishment) Department of the Environment (Property and Buildings Directorate) Department of Ii.ansport Electricity Association Federation of Civil Engineering Contractors Health and Safety Executive institute of Building Control Institute of Materials institution of Civ

5、il Engineers institution of Gas Engineers institution of Water and Environmental Management National Association of Plumbing, Heating and Mechanical Services Pipeline industries Guild Plastics Land Drauiage Manufacturers Assocon Society of British Gas Indushies Society of British Water indushies Wat

6、er Companies Association Water Services Association of England and Wales Contmctors The following bodies were also represented in the drafting of the standard, through subcommittees and panels This British Standard, having been prepared under the direction of the sector Board for Materials and Chemi

7、cals, was published under the authority of the Standards Board and comes into effect on 15 August 1996 O BSI 1996 ERA Technology Ltd. Engineering Equipment and Materials Users Association WRA Technology Ltd. Amendments issued since publication Amd.No. ID - editorial changes have been introduced. The

8、 material-dependent parameters and/or performance requirements are incorporated in the system standard(s) concerned Annex A, which is informative, gives a bibliography This standard is one of a series of standards on test methods which support system standards for plastics piping systems and ducng s

9、ystems. This European Standard shall be given the status of a naonai standard, either by publication of an identical text or by endorsement, at the latest by July 1996, and conflicting naona standards shall be withdrawn at the iatest by July 1996. According to the CEN/CENELEC inted Regulations, the

10、foliowing countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany,Greece, Iceland, ireland, Ita b) the test and conditioning temperatures and the conditioning medium (see 4.2 and Clause 6); c) the method of sampling (see 6.1); d) if appropriate, t

11、he number of test pieces to be used (see 6.2 and clause 7); e) if applicable, the position of impact on the test piece andlor any alternative or additional criteria (see b), c) and d) of 7.1); f) if applicable, the initiai drop height to be used in place of the preiiminary test procedure (see e) of

12、7.1); g) the required H50 value for the pipe (see a) of 7.2.1). 4 Apparatus 4.1 A falling weight impact testing machine incorporating the following basic components (see figure 1): a) main frame, with guide rails or a guiding tube rigidly fixed in the vertical position, to accommodate a striker (see

13、 b) and release it to fall vertically and freely such hat the speed of the striker at the moment of hitting the pipe is not less than 95 % of the theoretical speed; b) striker, having a nose comprising all or patt of a hemispherical form combined with a cylindrical stem at least 10 mm long and havin

14、g dimensions conforming to table 1 and figure 2, dependmg upon the mass of the striker. The mass of the striker, including any associated weights, shall be selected from table 2. Below the stem, the nose shall be of steel with a minimum wall thickness of 5 mm and the striking surface shall be free f

15、rom imperfections that could influence the results. Table 1. Dimensions for the nose of the striker (see figure 2) I *)Not specified I Table 2. Masses of strikers Masses in kiloim Illlass of striker * 0,006 kg I 075 1,25 2,5 5,o 10,o 10.8 1,6 32 Ici3 iz,5 O BSI 1996 - CEN ENxL4LL 96 3404589 0133606

16、308 Page 4 EN 1411 : 1996 Key A B C D E F G Guide Graduated scale, vertically adjustable for different sizes of pipe Main frame Striker Steel block 120, V-shaped or flat (see c) of 4.1) Solid base Sufficient to give a clear height from striker to pipe of at least 2 m Figure 1. mical impact testing m

17、achine c) rigid test piece support, having one of the following forms as applicable. 1) For pipes having a circular exteniai cross section, consisting of a 120 o V-block of steel at least 200 mm long, positioned so that the axis of the line of fall of the nose of the striker shall intersect the axes

18、 of the v to within f 2,5 mm (see figure 1). 2) For pipes with a flat bottom, a horizontai support of fiat steel together with guides to ensure that the line of fall of the striker shaJ intercept to within 2,5 mm the striking point specified on the test piece by the referring standard. The support c

19、onstruction shall be sufficiently rigid not to cushion the effect of the impact. d) release mechanism, such that the striker can fall from a variable height which can be dusted up to 2 m, as measured from the top surface of the test piece with an accuracy of 10 mm. The drop height shall be a multipl

20、e of 100 mm. 4.2 A liquid bath or air cabinet, capable of maintaining one of the following conditionhg temperatures for testing at the temperature as specified in the referring standard. For testing at O OC, the conditionhg temperature shall be (O 1) “C. For testing at -20 OC, the conditionhg temper

21、ature shall be (-20 f 2) “C For testing at +23 OC, the conditioning temperature shall be (+ 23 * 2) “C. O BSI 1996 CEN EN*14LL 96 = 3404589 0333607 244 , Page 5 EN 1411 : 1996 d=25 4 I .- E I E I n i/ I /I d =90 4 4 Dimensions in millimetres Figure 2. Dimensions of strikers 5 Test pieces 6.2 Number

22、6.1 Preparation The test pieces shall be cut from pipes selected at random. In the case of pipes hahg lOnhW seam wes, the seam iines (see note) shad be marked, e.g. with different colours, before the pipe is cut as follows. NOTE. When pipes are continuously moulded between two running moulds, lines

23、are formed in the longitudinal direction of the pipe which are caiied seam lines. For each test piece, the length shall be (200 f 10) nun. clean and free from damage. For helically ribbed pipes the cut end of the helical rib shall be rounded off in order to eliminate any sharp edges. Unless otherwis

24、e specied by the referring standard, up to 50 test pieces shall be used as foows: a) for a given striker mass, up to 10 test pieces may be used for the preliminary test procedure (see 7.2) to determine the drop height which provokes the first failure; b) at least 20 test pieces are used for the main

25、 test procedure (see 7.3). me cut en b) for pipes which are corrugated or ribbed extedy the wail thickness e, shall be the minimum waH thickness between inside and outside surfaces both in contact with the conditioning fluid of the pipe shall be the total I Table 3. Conditioning periods I wail thick

26、ness e+ I mm Conditioning period b) 0,5 m. 7.2.2 Remove a test piece from the conditioning environment and within 10 s position it on the appropriate support and subject the test piece to one impact by the striker. Determine and record whether the test piece failed (see d) of 7.1). If it did not fad

27、, proceed in accordance with 7.2.6. Otherwise, record the type of failure and proceed in accordance with 7.2.3 or 7.2.4, as applicable. 7.2.3 If testing in accordance with a) of 7.2.1 and the first result is a failure, repeat 7.2.2 using the same drop height and another test piece. If the second res

28、ult is a pass proceed in accordance with 7.2.6. If the second result is a failure record the sample as not conforming to the specified value and proceed to clause 9. 7.2.4 If testing in accordance with b) of 7.2.1 and the first result obtained is a failure, repeat 7.2.2 using a drop height of 0,30 m

29、 and another test piece. If the second result is a pass proceed in accordance with 7.2.6. If the second result is a failure, if possible select a -striker having the next lighter mass in accordance with table 2 and recommence testing in accordance with 7.2.1. therwise, if aiready using a *er mass of

30、 0,25 kg record the result and proceed to claw 9. Q BSI 1996 CEN EN*L41L 76 W 3404587 0333607 017 1.4 12 1 1,o * 0.8 0.6 U- 0.2 o Page 7 EN 1411 : 1996 - - - Il - 1-1 - - +-+ - +Il + II II + Il - Il -+ + -+ II+- +I I + - - I I I I: I I I I I I I I I I- D i t C + - Key A Heightinmetre B Number of blo

31、ws C Preiminary test procedure D Main test procedure + indicatesapass - indicates a failure Figure 3. Qpical record for impact test data, obtained using the staircase method (in this example, the H50 value = 1,14 m) * o * 7.2. Reset the striker drop height 0,2 m higher and test another test piece in

32、 accordance with 7.2.2. If nec-, repeat this step until the first failure occurs. Record the drop height for the first test piece that fails 7.3.3 If the result obtained in accordance with 7.3.2 was a failure, reset the striker drop height 0,l m lower otherwise reset it 0,l m higher, and test anothe

33、r test Piece in acc01-danCe with 7-3.2. for use as the first test piece result for the main test procedure (see 7.3). If the drop height has reached 2 m without failure, select the striker having the next greater mass in accordance with table 2 and recommence testing in accordance with 7.2.1 (see a)

34、 of 6.2). 7.3 Main test procedure 7.3.1 Record as the striker drop height for the first result that height obtained in accordance with e) of 7.1 or with 7.2, as applicable. Set the striker drop height 0,l m lower than that thus recorded. 7.3.2 Remove a test piece b) the fuil identification of the pi

35、pe under test, including application, material, dimensions; c) the method of sampling; d) the numbers of test pieces used for the preiiminary and main test procedures, respectiveiy; e) the conditioning medium and its temperature, in degrees Celsius; f) the type of striker and its mass, in kiiograms;

36、 g) if applicable, details of other failure criteria (see e) of 7.1); h) the minimum and the maximum drop heights found during the main test procedure or the drop height used if testing was stopped in accordance with 7.2.3 and 7.2.4; i) the H50 value; j) any factors which may have affected the resul

37、ts, such as any incidents or any operating details not specified in this standara k) the date of test. O BSI 1996 CEN EN*1411 96 3404589 OL33bLL 775 D Page 9 EN 1411 : 1996 Annex A (informative) Bibliography EO 66031 : 1985 Phtics - Determination of multiaxial impact behaviour of rigid plustics - Pa

38、rt 1: Fauing dart method O BSI 1996 CEN EN*LYLL 96 3404589 OL33bL2 bOL m BS EN 1411 : 1996 BS 2782 : Part 11 : Method 1108B : 1996 BSI 389 Chiswick High Road London w4 4AL BSI - British Standards Institution BSI is the independent national body responsible for preparing British Standards. It present

39、s the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Contract requirements A British Standard does not purport to include ail the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Revisio

40、ns British Standards are updated by amendment or revision. Users of British Standards should make sure W they possess the latest amendments or eitions. It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone fin- an inaccuracy or ambiguity wh

41、ile using this British Standard would inform the Secretary of the responsible technical committee, the identity of which can be found on the inside front cover. Tel 0181 996 9o00, Fax: 0181 996 7400. BSI offers members an individual up- service called PLUS which ensures that subscribers automaticall

42、y receive the latest editions of standards. Buying standards Orders for ail BSI, international and foreign standards publications should be addressed to Customer Services, Sales Depariment at Chiswick Tel: 0181 996 7000; Fax 0181 996 7001. In response to orders for international standards, it is BSI

43、 policy to supply the BSI implementation of those that have been published as British Standards, unless otherwise requested Information on standards BSI provides a wide range of information on national, European and international standards through its Library, the Standardiine Database, the BSI info

44、rmation Technology Service (BlTS) and its Technical Help to Exportem Service. Contact the Information Department at Chiswick Tel 0181 996 7111; Fax: 0181 996 7048. Subscribing members of BSI are kept up to date with standards developments and receive substantiai discounts on the purchase price of st

45、andards. For details of these and other benefits contact Customer Services, Membership at Chiswick Tel 0181 996 7002; Fax: O181 996 7001. Copyright Copyright subsists in ail BSI publications. BSI also holds the copyright, in the UK, of the publications of the intemational standarmon bodies. Except a

46、s permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means - electronic, photocopying, recording or otherwise - without prior written permission hm BSL This does not preclude the free use, in the

47、 course of implementing the standard, of necessary details such as symbols, and size, type or grae designations. if these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained If permission is granted, the terms may include royalty payments or a licensing agreement. Details and advice can be obtained from the Copyright Manager, BSI, 389 Chiswick High Road, London W4 4AL ISBN O 680 28877 7 PR61