DIN EN 12980-2015 Materials and articles in contact with foodstuffs - Non-metallic articles for catering and industrial use - Method of test for the determination of impact resista.pdf

1、February 2015 Translation by DIN-Sprachendienst.English price group 9No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).IC

2、S 67.250!%d“2296165www.din.deDDIN EN 12980Materials and articles in contact with foodstuffs Non-metallic articles for catering and industrial use Method of test for the determination of impact resistance;English version EN 12980:2000,English translation of DIN EN 12980:2015-02Werkstoffe und Gegenstn

3、de in Kontakt mit Lebensmitteln Nichtmetallische Gegenstnde fr gastronomische und gewerbliche Zwecke Verfahren zur Bestimmung des Schlagwiderstandes;Englische Fassung EN 12980:2000,Englische bersetzung von DIN EN 12980:2015-02Matriaux et articles en contact avec les denres alimentaires Objets non mt

4、alliques usage industriel pour la cuisine et le transport de nourriture Mthode dessai permettant de dterminer la rsistance au choc;Version anglaise EN 12980:2000,Traduction anglaise de DIN EN 12980:2015-02SupersedesDIN EN 12980:2000-08www.beuth.deDocument comprises 12 pagesIn case of doubt, the Germ

5、an-language original shall be considered authoritative.01.15DIN EN 12980:2015-02 2 A comma is used as the decimal marker. National foreword This document (EN 12980:2000) has been prepared by Technical Committee CEN/TC 194 “Utensils in contact with food” (Secretariat: BSI, United Kingdom). The respon

6、sible German body involved in its preparation was the DIN-Normenausschuss Materialprfung (DIN Standards Committee Materials Testing), Working Committee NA 062-08-96 AA Bedarfsgegenstnde in Kontakt mit Lebensmitteln Mechanisch-technologische Prfverfahren. Attention is drawn to the possibility that so

7、me of the elements of this document may be the subject of patent rights. DIN and/or DKE shall not be held responsible for identifying any or all such patent rights. Amendments This standard differs from DIN EN 12980:2000-08 as follows: a) Equation (1) has been corrected; b) Equation (2) has been cor

8、rected; c) Tables 2 and 3 have been corrected; d) the standard has been editorially revised. Previous editions DIN EN 12980: 2000-08 EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 12980March 2000ICS 67.250English versionMaterials and articles in contact with foodstuffs - Non-metallicarticles for

9、catering and industrial use - Method of test for thedetermination of impact resistanceMatriaux et articles en contact avec les denresalimentaires - Objets non mtalliques usage industrielpour la cuisine et le transport de nourriture - Mthodedessai permettant de dterminer la rsistance au chocWerkstoff

10、e und Gegenstnde in Kontakt mit Lebensmitteln- Nichtmetallische Gegenstnde fr gastronomische undgewerbliche Zwecke - Verfahren zur Bestimmung desSchlagwiderstandesThis European Standard was approved by CEN on 18 February 2000.CEN members are bound to comply with the CEN/CENELEC Internal Regulations

11、which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Sta

12、ndard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standa

13、rds bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMU

14、NGCentral Secretariat: rue de Stassart, 36 B-1050 Brussels 2000 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 12980:2000 EContentsPageForeword 21 Scope 22 Normative references 33 Principle 34 Sampling 45 Apparatus 46 Procedure 57 T

15、est report 6Table 1 Relationship between angular displacement and height of fall h 7Table 2 Relationship between angular displacement and impact velocity vfor different lengths of pendulum l 8Table 3 Relationship between height of fall h, mass of hammer m and impactenergy E 9ForewordThis European St

16、andard has been prepared by Technical Committee CEN/TC 194 “Utensilsin contact with food“, the secretariat of which is held by BSI.This European Standard shall be given the status of a national standard, either by publicationof an identical text or by endorsement, at the latest by September 2000, an

17、d conflictingnational standards shall be withdrawn at the latest by September 2000.According to the CEN/CENELEC Internal Regulations, the national standards organizationsof the following countries are bound to implement this European Standard: Austria, Belgium,Czech Republic, Denmark, Finland, Franc

18、e, Germany, Greece, Iceland, Ireland, Italy,Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the UnitedKingdom.1 ScopeThis standard gives a method of test for determination of the resistance to mechanical shocksof articles used in catering and industrial services where they

19、are subjected to substantial andfrequent shocks.It is well known that the results of this test procedure depend upon the details of the testconditions 1). The results therefore cannot be generalized for other utensils made of the samematerial, nor to other test conditions. The results are only valid

20、 for the article and testconditions specified in the test report.1)See paper by R O Heckroodt and V Frith, Impact strength and chipping resistance of dinner plates,Interceram 39, No 2 pp 32-34 1990DIN EN 12980:2015-02 EN 12980:2000 (E) 22 Normative referencesThis European Standard incorporates by da

21、ted or undated reference, provisions from otherpublications. These normative references are cited at the appropriate places in the text and thepublications are listed hereafter. For dated references, subsequent amendments to or revisionsof any of these publications apply to this European Standard on

22、ly when incorporated in it byamendment or revision. For undated references the latest edition of the publication referred toapplies including amendments.EN 10109-1 Metallic materials - Hardness test - Part 1: Rockwell test (scales A, B, C, D, E,F, G, H, K) and Rockwell superficial test (scales 15N,

23、30N, 45N, 15T, 30T and 45T)3 PrincipleThe method uses an impact testing machine that subjects the article to be tested to a blowfrom a hammer of mass m, on the end of a pendulum of negligible mass and length l raised toan angle from the vertical and let fall from a height h at a velocity v.The relat

24、ionships between m, l, h, and v are given by the equations:h = l(1-cos ) (1) cos-(122 glghv (2)The kinetic energy of the shock (the impact energy, E) is expressed by the relationships:E=mgh (3)andE=mv2(4)and represents a measure of the resistance of the article under test to the shock administered.W

25、hereh is the height of fall of the hammer, in metres;l is the length of the pendulum arm, in metresis the angular displacement of the arm from the vertical, in degreesv is the velocity of fall of the hammer, in metres per second;g is the acceleration due to gravity (= 9,81 m.s-2);m is the mass of th

26、e pendulum hammer including the arm, in kilograms;E is the impact energy, in joules.DIN EN 12980:2015-02 EN 12980:2000 (E) 3NOTE: The velocity of fall is usually not less than 0,2 m.s-l.4 SamplingThe sample size shall be a minimum of ten test specimens.NOTE: The sampling plan should be agreed by the

27、 purchaser and/or supplier andrecorded in the test report (see 7 c).5ApparatusPendulum impact testing machine, consisting of the following components, all of which aremetal, assembled as shown diagrammatically in figure 1.5. 1 A pendulum swinging on a horizontal pivot, comprising a rigid lightweight

28、 metal armwith a radius of swing of 0,2 m to 0,7 m and a hammer of mass 0,1 kg to 1,0 kg whichconstitutes the major part of the combined mass of the pendulum and hammer. The centre ofgravity of the pendulum may therefore be considered to be coincident with that of thehammerThe hammer has an intercha

29、ngeable striking head made from a steel of hardness 55 to 65HRC (conforming to EN 10109-1). The striking face of the head is normally spherical inshape but other profiles may be used.NOTE: The type of the head is chosen according to the shape of the article to betested5. 2 A mechanism (optional) to

30、raise the pendulum to the desired height and to trigger its fall.5. 3 A dial to measure the angular displacement of the pendulum from the vertical and/or thecorresponding height of fall h and impact energy E.5. 4 A column to support the pendulum and the dial.5. 5 A support which permits a test speci

31、men to be held on the apparatus in a definedposition.NOTE The support should be designed to adjust the specimen vertically,horizontally and/or tilted,5. 6 A supporting fixture, which permits a test specimen to be held on the apparatus by aminimum restraining force when it is necessary to prevent mov

32、ement of the specimen onimpact.NOTE The supporting fixture may have the shape of a V with an angle of 120 5. 7 A protective screen to protect personnel against splinters.DIN EN 12980:2015-02 EN 12980:2000 (E) 45. 8 A heavy level base, on which the components of the testing machine are mounted.NOTE T

33、he most effective way to provide for an absolutely rigid base is to fix it tothe floor.6 ProcedureUse tables 1, 2 and 3 to choose the appropriate conditions to perform the test.Place the test specimen on the apparatus so that the hammer in the resting position touches itat the desired point of impac

34、t, making sure that the specimen is against the supporting fixture(5.6) if applicable.Close the protective screen; lift the pendulum to the height corresponding to the chosenenergy of impact.Release the pendulum.Examine the article under test.Record the result of the test as positive if the article

35、has not broken and does not show anyvisible signs of chipping, cracking or fissuring.According to the objectives of the test and the test programme either:a) for testing by attributes: Place another test specimen on the support and repeat theprocedure;b) for testing by variables: Repeat the procedur

36、e on the same test specimen, progressivelyincreasing the energy level until the article chips or cracks or until a predetermined energylevel is reached. Alternatively repeat the procedure, without changing the energy level, on thesame article, one or several times, hitting the article in the same or

37、 in different places.Record the experimental conditions and the results.DIN EN 12980:2015-02 EN 12980:2000 (E) 57 Test reportThe test report shall include the following information.a) description of the articles under test;b) the number of articles in the lot to be tested;c) the sampling plan and th

38、e procedure for selecting test specimens from the lot.d) the number of articles tested;e) the test conditions in detail (temperature, mass and type of hammer head,height of fall, impact energy, zone and angle of impact, specimen unrestrained or fixed to thesupport etc.);f) for testing by attributes:

39、 the number of articles broken or damaged at the selectedenergy level;g) for testing by variables: initial energy level and the successive higher energy levels,where applicable, and the energy values and height of fall at which the articles are broken ordamaged; alternatively the number and location

40、 of impacts.h) mean value and scatter of the results for testing by variables.j) any other relevant details of the test procedure.DIN EN 12980:2015-02 EN 12980:2000 (E) 6Table 1 Relationship between angular displacement and height of fall hfor different lengths of pendulum lAngulardisplacementLength

41、 of pendulum, l (in m)0,2 0,3 0,4 0,5 0,6 0,7degrees Height of fall h (in m)0 0,000 0,000 0,000 0,000 0,000 0,0005 0,001 0,001 0,002 0,002 0,002 0,00310 0,003 0,005 0,006 0,008 0,009 0,01115 0,007 0,010 0,014 0,017 0,020 0,02420 0,012 0,018 0,024 0,030 0,036 0,04225 0,019 0,028 0,038 0,047 0,056 0,0

42、6630 0,027 0,040 0,054 0,067 0,080 0,09435 0,036 0,054 0,072 0,091 0,109 0,12740 0,047 0,070 0,094 0,117 0,140 0,16445 0,059 0,088 0,117 0,147 0,176 0,20550 0,071 0,107 0,143 0,179 0,214 0,25055 0,085 0,128 0,170 0,213 0,256 0,29860 0,100 0,150 0,200 0,250 0,300 0,35065 0,115 0,173 0,231 0,289 0,346

43、 0,40470 0,132 0,197 0,263 0,329 0,395 0,46175 0,148 0,222 0,296 0,371 0,445 0,51980 0,165 0,248 0,330 0,413 0,496 0,57885 0,183 0,274 0,365 0,457 0,548 0,63990 0,200 0,300 0,400 0,500 0,600 0,70095 0,217 0,326 0,435 0,544 0,652 0,761100 0,235 0,352 0,470 0,587 0,704 0,822105 0,252 0,378 0,504 0,630

44、 0,755 0,881110 0,268 0,403 0,537 0,671 0,805 0,939115 0,285 0,427 0,569 0,712 0,854 0,996120 0,300 0,450 0,600 0,750 0,900 1,050125 0,315 0,472 0,630 0,787 0,944 1,102130 0,329 0,493 0,657 0,822 0,986 1,150135 0,341 0,512 0,683 0,854 1,024 1,195140 0,353 0,530 0,706 0,883 1,060 1,236145 0,364 0,546

45、 0,728 0,910 1,091 1,273150 0,373 0,560 0,746 0,933 1,120 1,306155 0,381 0,572 0,762 0,953 1,144 1,334160 0,388 0,582 0,776 0,970 1,164 1,358165 0,393 0,590 0,786 0,983 1,180 1,376170 0,397 0,596 0,794 0,993 1,191 1,390175 0,399 0,599 0,798 0,998 1,198 1,397180 0,400 0,600 0,800 1,000 1,200 1,400DIN

46、 EN 12980:2015-02 EN 12980:2000 (E) 7Table 2 Relationship between angular displacement and impact velocity v fordifferent lengths of pendulum lAngulardisplacementLength of pendulum, l (in m)0,2 0,3 0,4 0,5 0,6 0,7degrees velocity of fall v (in m.s 1)0 0,000 0,000 0,000 0,000 0,000 0,0005 0,125 0,153

47、 0,177 0,198 0,217 0,23410 0,243 0,297 0,343 0,384 0,420 0,45415 0,365 0,447 0,517 0,578 0,633 0,68320 0,485 0,594 0,686 0,767 0,840 0,90825 0,607 0,744 0,859 0,960 1,052 1,13630 0,725 0,888 1,025 1,147 1,256 1,35735 0,843 1,032 1,192 1,333 1,460 1,57740 0,958 1,174 1,355 1,515 1,660 1,79345 1,072 1

48、,313 1,516 1,695 1,857 2,00650 1,184 1,450 1,674 1,871 2,050 2,21455 1,293 1,583 1,828 2,044 2,239 2,41960 1,401 1,716 1,981 2,215 2,426 2,62065 1,505 1,843 2,128 2,379 2,606 2,81570 1,607 1,968 2,272 2,541 2,783 3,00675 1,705 2,088 2,412 2,696 2,953 3,19080 1,800 2,205 2,546 2,847 3,118 3,36885 1,8

49、93 2,318 2,677 2,993 3,278 3,54190 1,981 2,426 2,801 3,132 3,431 3,70695 2,065 2,529 2,921 3,265 3,577 3,864100 2,146 2,629 3,035 3,394 3,718 4,015105 2,223 2,722 3,143 3,514 3,850 4,158110 2,295 2,811 3,245 3,628 3,975 4,293115 2,363 2,894 3,342 3,736 4,093 4,421120 2,426 2,971 3,431 3,836 4,202 4,539125 2,485 3,044 3,515 3,929 4,305 4,649130 2,539 3,110 3,591 4,015 4,398 4,750135 2,588 3,170 3,660 4,092 4,483 4,842140 2,632 3,224 3,723 4,162 4,560 4,925145 2,672 3,272 3,778 4,224 4,627 4,998150 2,706 3,314 3,827 4,278 4,6