ImageVerifierCode 换一换
格式:PDF , 页数:16 ,大小:409.53KB ,
资源ID:722014      下载积分:10000 积分
快捷下载
登录下载
邮箱/手机:
温馨提示:
如需开发票,请勿充值!快捷下载时,用户名和密码都是您填写的邮箱或者手机号,方便查询和重复下载(系统自动生成)。
如填写123,账号就是123,密码也是123。
特别说明:
请自助下载,系统不会自动发送文件的哦; 如果您已付费,想二次下载,请登录后访问:我的下载记录
支付方式: 支付宝扫码支付 微信扫码支付   
注意:如需开发票,请勿充值!
验证码:   换一换

加入VIP,免费下载
 

温馨提示:由于个人手机设置不同,如果发现不能下载,请复制以下地址【http://www.mydoc123.com/d-722014.html】到电脑端继续下载(重复下载不扣费)。

已注册用户请登录:
账号:
密码:
验证码:   换一换
  忘记密码?
三方登录: 微信登录  

下载须知

1: 本站所有资源如无特殊说明,都需要本地电脑安装OFFICE2007和PDF阅读器。
2: 试题试卷类文档,如果标题没有明确说明有答案则都视为没有答案,请知晓。
3: 文件的所有权益归上传用户所有。
4. 未经权益所有人同意不得将文件中的内容挪作商业或盈利用途。
5. 本站仅提供交流平台,并不能对任何下载内容负责。
6. 下载文件中如有侵权或不适当内容,请与我们联系,我们立即纠正。
7. 本站不保证下载资源的准确性、安全性和完整性, 同时也不承担用户因使用这些下载资源对自己和他人造成任何形式的伤害或损失。

版权提示 | 免责声明

本文(EN ISO 1805-2006 en Fishing nets - Determination of breaking force and knot breaking force of netting yarns《渔网 网线断裂强度和打结断裂强度的测定 ISO 1805-2006》.pdf)为本站会员(dealItalian200)主动上传,麦多课文库仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。 若此文所含内容侵犯了您的版权或隐私,请立即通知麦多课文库(发送邮件至master@mydoc123.com或直接QQ联系客服),我们立即给予删除!

EN ISO 1805-2006 en Fishing nets - Determination of breaking force and knot breaking force of netting yarns《渔网 网线断裂强度和打结断裂强度的测定 ISO 1805-2006》.pdf

1、BRITISH STANDARDBS EN ISO 1805:2006Fishing nets Determination of breaking force and knot breaking force of netting yarnsThe European Standard EN ISO 1805:2006 has the status of a British StandardICS 65.150g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49

2、g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN ISO 1805:2006This British Standard was published under the authority of the Standards Policy and Strategy Committee on 29 December 2006 BSI 2006ISBN 0 580 49883 2National forewordThis Briti

3、sh Standard was published by BSI. It is the UK implementation of EN ISO 1805:2006. The UK participation in its preparation was entrusted to Technical Committee TCI/77, Ropes and cordage and fishing nets.A list of organizations represented on TCI/77 can be obtained on request to its secretary.This pu

4、blication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.Amendments issued since publicationAmd. No. Date CommentsEUROPEAN STANDARDNORME EUROPEN

5、NEEUROPISCHE NORMEN ISO 1805November 2006ICS 65.150English VersionFishing nets - Determination of breaking force and knot breakingforce of netting yarns (ISO 1805:2006)Filets de pche - Dtermination de la force de rupture et dela force de rupture au noeud des fils pour filets (ISO1805:2006)Fischnetze

6、 - Bestimmung der Hchstzugkraft und derKnotenhchstzugkraft von Netzgarn (ISO 1805:2006)This European Standard was approved by CEN on 25 October 2006.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of

7、 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 Standard exists in three official versions (English, French, German). A version

8、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 standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Fin

9、land, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMIT

10、EE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2006 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 1805:2006: EForeword This document (EN ISO 1805:2006) has been prepared by Technical Committee CEN/TC 248 “T

11、extiles and textile products“, the secretariat of which is held by BSI, in collaboration with Technical Committee ISO/TC 38 “Textiles“. 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 May 2007, an

12、d conflicting national standards shall be withdrawn at the latest by May 2007. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia,

13、 Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EN ISO 1805:2006Reference numberISO 1805:2006(E)INTERNATIONAL STANDARD ISO1805

14、Second edition2006-11-15Fishing nets Determination of breaking force and knot breaking force of netting yarns Filets de pche Dtermination de la force de rupture et de la force de rupture au noeud des fils pour filets EN ISO 1805:2006ii iiiContents Page Foreword iv 1 Scope . 1 2 Normative references

15、. 1 3 Terms and definitions. 1 4 Principle. 2 5 Apparatus 2 6 Sampling 3 7 Preparation of samples 3 8 Requirements for testing . 4 9 Number of tests. 4 10 Test procedure 4 11 Calculation and expression of results 5 12 Test report . 6 EN ISO 1805:2006iv Foreword ISO (the International Organization fo

16、r Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing 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

17、 right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Internati

18、onal Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication

19、as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that 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.

20、ISO 1805 was prepared by the European Committee for Standardization (CEN) Technical Committee CEN/TC 248, Textiles and textile products, in collaboration with Technical Committee ISO/TC 38, Textiles, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement). Th

21、is second edition cancels and replaces the first edition (ISO 1805:1973), of which it constitutes a technical revision. EN ISO 1805:20061Fishing nets Determination of breaking force and knot breaking force of netting yarns 1 Scope This International Standard specifies a method of testing the breakin

22、g force and knot breaking force of netting yarns for fishing nets. Tests may be carried out in both the dry and wet states, but tests in the wet state on the knotted yarn are considered to be particularly appropriate in indicating the behaviour of the yarn in use. 2 Normative references The followin

23、g referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 139, Textiles Standard atmospheres for conditioning and t

24、esting ISO 858, Fishing nets Designation of netting yarns in the Tex system 3 Terms and definitions For the purposes of this International Standard, the following terms and definitions apply. 3.1 breaking force force, equal to the maximum force observed during a breaking test NOTE Distinction is mad

25、e between the dry yarn breaking force, the wet yarn breaking force, the dry knot breaking force, the wet knot breaking force. 3.2 force at rupture final force at the moment that the specimen or the first component of the specimen breaks at, or after, attainment of the breaking force NOTE The force a

26、t rupture is usually, but not always, identical to the breaking force. EN ISO 1805:20062 3.3 tenacity breaking force per unit resultant linear density of the unstrained specimen in the conditioned state 3.4 breaking length calculated length of a specimen whose conditioned weight exercises a force eq

27、ual to its breaking force 3.5 time-to-break time taken to reach the breaking force, measured from the moment of application of the force NOTE The time-to-break is expressed in seconds. 4 Principle A length of yarn is extended in the dry or wet state until it reaches the load at rupture. The test is

28、performed using a suitable apparatus that records or indicates the applied force 5 Apparatus 5.1 Tensile testing machine. 5.1.1 Any of the following types may be used: a) constant rate of elongation machine; b) constant rate of load machine; c) constant rate of traverse machine. Preference should be

29、 given to a constant rate of elongation machine. 5.1.2 All tensile testing machines shall include a pair of suitable devices to hold the sample, a means of applying force or elongating the sample at suitable rates, and a force-indicating mechanism which will indicate or continuously record the force

30、 applied to the sample. For determining the breaking force of netting yarns without knots, the samples shall be mounted in special holding devices, for example, of the types shown in Figure 1, to avoid slipping of the samples or breaking due to damage caused by the holding devices. EN ISO 1805:20063

31、Figure 1 Holding devices for the testing of netting yarns without knots 5.1.3 The maximum error of the indicated force at any point in the range in which the machine is used shall not exceed 1 %. Check the accuracy of the graduated scale of the apparatus dynamically, for example, by means of calibra

32、ted springs of appropriate characteristics. 5.1.4 The testing machine shall be capable of testing samples having a nominal gauge length of at least 250 mm. 5.1.5 All testing machines shall include facilities for producing different rates of loading in order to break samples in the specified average

33、time-to-break. 5.2 Equipment for producing and maintaining the standard atmosphere for testing. See 8.1. 5.3 Equipment in which specimens can be immersed in water preparatory to wet testing. 5.4 Stop-watch or interval timer. 6 Sampling Sampling shall be carried out in accordance with recognized nati

34、onal standards or in a manner agreed between the parties concerned. 7 Preparation of samples The samples shall be removed from the package before exposure in the standard atmosphere for testing, or before immersing in water, in such a manner that there is no alteration in the twist. EN ISO 1805:2006

35、4 8 Requirements for testing 8.1 Atmosphere for testing All samples to be tested in the dry state shall be exposed to the standard atmosphere for testing as described in ISO 139, until they have reached equilibrium. For netting yarns of man-made fibres, a period of 24 h exposure is generally suffici

36、ent. Where it is not possible to carry out the tests in the standard atmosphere, the tests shall be carried out immediately after removal of the samples from the standard atmosphere. 8.2 Testing in the wet state 8.2.1 All samples to be tested in the wet state shall be immersed in tap water, without

37、wetting agents, at a temperature of (20 2) C for a period of not less than 12 h. Surplus water shall be shaken off. 8.2.2 By agreement between the parties, a shorter wetting time with the addition of a wetting agent shall be used. The specimens are immersed for 1 h in solution of wetting agent in wa

38、ter at a temperature of (20 2) C. A shorter time of immersion is allowed, if it can be shown that the specimen is completely wetted in less than 1 h. 8.3 Distance between the holding devices The free length of the sample between the holding devices shall be at least 250 mm. 8.4 Time-to-break The mea

39、n duration of the test shall be (20 3) s. It shall be determined by preliminary tests. Where this time cannot be obtained due to limitations of the apparatus and/or the holding devices, the duration of the test may be (30 3) s or (60 6) s. This shall be recorded in the test report. 9 Number of tests

40、 At least ten single valid tests on each sample package shall be carried out. If a distinct confidence interval for the mean value is prescribed, as many additional tests shall be carried out as necessary to secure this confidence interval. 10 Test procedure 10.1 General 10.1.1 Check that the distan

41、ce between the holding devices is at least 250 mm (see 8.3). 10.1.2 Mount the sample in the testing machine so that the axis of the sample is parallel to and coincidental with the direction of the applied force. 10.1.3 Wet samples shall be tested immediately after removal from the water (see 8.2). 1

42、0.1.4 Apply the force to reach the prescribed mean time-to-break. 10.1.5 Discard all observations obtained on samples that slip between the holding devices or break due to damage caused by the holding devices. The number of observations discarded as directed above shall be noted. EN ISO 1805:2006510

43、.1.6 If any component breaks before the breaking force is reached, this fact shall be recorded in the test report. 10.2 Knotted netting yarns in the dry and wet states 10.2.1 All knots shall be made immediately before testing and gently tightened by hand. Precautions shall be taken to ensure that th

44、e twist is not altered. 10.2.2 Samples shall be tested with the weavers knot. All four ends of the weavers knot shall be fastened in the holding devices. Each holding device holds the two ends of the same yarn of approximately the same length (see Figure 2). 10.2.3 If a sample does not break at the

45、knot, the test shall be discarded. Figure 2 Weavers knot 11 Calculation and expression of results 11.1 Average breaking force, in decanewtons (daN), is equal to sum of observed breaking forces, in decanewtons (daN)number of observationsCalculate the average breaking force to four significant figures

46、 and round it off to three significant figures. 11.2 Average tenacity, in centinewtons per tex, is equal to average breaking force, in centinewtons (cN)average resultant linear density, in tex, of conditioned sampleCalculate the average tenacity to four significant figures and round it off to three

47、significant figures. 11.3 Breaking length, in kilometres, is equal to average breaking force, in decanewtons (daN)average resultant linear density, in kilotex, of conditioned sampleCalculate the average breaking length to four significant figures and round it off to three significant figures. 11.4 I

48、f necessary, the coefficient of variation and the confidence interval shall be calculated by a recognized statistical method. EN ISO 1805:20066 12 Test report The test report shall specify the following: a) a statement that the tests were performed in according with this International Standard; b) t

49、he date of the test; c) the type, linear density, size and direction of final twist of the netting yarn (see ISO 858); d) the type and capacity of testing machine used, the type of holding devices employed and the range of indication; e) the sampling method employed; f) the number of samples tested; g) the number of irregular tests; h) the kind and time of wetting (with or without wetting agents); i) the average breaking force in decanewtons (daN); j) any deviation from the specified test procedure. If it is required, the test report shal

copyright@ 2008-2019 麦多课文库(www.mydoc123.com)网站版权所有
备案/许可证编号:苏ICP备17064731号-1