jjg762-2007引伸計(jì)(譯文)

1、<p>　　中華人民共和國(guó)國(guó)家計(jì)量檢定規(guī)程</p><p>　　JJG of the People`s Republic of China</p><p>　　JJG 762-2007</p><p><b>　　引 伸 計(jì)</b></p><p>　　Extensometer</p><

2、;p>　　2007一08一21發(fā)布 2008一02一21買(mǎi)施 </p><p>　　Ratified on Aug 21, 2007 Implemented on Feb 21, 2008</p><p>　　國(guó)家質(zhì)量監(jiān)督檢驗(yàn)檢疫總局發(fā)布</p>&l

3、t;p>　　Ratified by General Administration of Quality Supervision, Inspection and Quarantine</p><p><b>　　引伸計(jì)檢定規(guī)程</b></p><p>　　Verification Regulation</p><p>　　For Exten

4、someter </p><p>　　本規(guī)程經(jīng)國(guó)家質(zhì)量監(jiān)督檢驗(yàn)檢疫總局2007年8月21日批準(zhǔn)，并自</p><p>　　2008年2月21日起施行。</p><p>　　The regulation is ratified by General Administration of Quality Supervision, Inspection and Quara

5、ntine on Aug 21, 2007 and implemented on Feb 21, 2008.</p><p>　　歸口單位: 全國(guó)力值硬度計(jì)量技術(shù)委員會(huì)</p><p>　　Specified Administrative Authority: The National Force Value Hardness Measurement Technology Comm

6、ittee</p><p>　　主要起草單位: 鋼鐵研究總院</p><p>　　Main Drafting Institution: Iron and Steel Research Institute </p><p>　　湖北省計(jì)量測(cè)試技術(shù)研究院</p><p>　　Institute of Measuring and Testing T

7、echnology of Hubei Province</p><p>　　參加起草單位: 國(guó)防科學(xué)技術(shù)大學(xué)</p><p>　　Participating drafting Units: National University of Defense Technology</p><p><b>　　長(zhǎng)春試驗(yàn)機(jī)研究所</b></p>

8、<p>　　Changchun Research Institute of Testing Machine</p><p>　　本規(guī)程委托全國(guó)力值硬度計(jì)量技術(shù)委員會(huì)負(fù)責(zé)解釋</p><p>　　The National Force Value Hardness Measurement Technology Committee is responsible for the in

9、terpretation of the regulation.</p><p><b>　　本規(guī)程主要起草人:</b></p><p>　　Chief Draftsmen of the Regulation:</p><p>　　王春華 (鋼鐵研究總院)</p><p>　　Wang Chunhua （Iron an

10、d Steel Research Institute）</p><p>　　王大充 (湖北省計(jì)量測(cè)試技術(shù)研究院)</p><p>　　Wang Dachong (Institute of Measuring and Testing Technology of Hubei Province)</p><p>　　崔燕生 (鋼鐵研究總院)</p>

11、<p>　　Cui Yansheng (Iron and Steel Research Institute)</p><p>　　鄭文龍 (國(guó)防科學(xué)技術(shù)大學(xué))</p><p>　　Zheng Wenlong (National University of Defense Technology)</p><p><b>　　參加起草人:<

12、/b></p><p>　　Participating draftsmen:</p><p>　　王學(xué)智 (長(zhǎng)春試驗(yàn)機(jī)研究所)</p><p>　　Wang Xuezhi (Changchun Institute of Testing Machine)</p><p>　　周巍松 (鋼鐵研究總院)</p><

13、p>　　Zhou Weisong (Iron and Steel Research Institute)</p><p>　　梁新邦 (鋼鐵研究總院)</p><p>　　Liang Xinbang (Iron and Steel Research Institute)</p><p>　　胡翔 (湖北省計(jì)量測(cè)試技術(shù)研究院)</p>

14、<p>　　Hu Xiang (Institute of Measuring and Testing Technology of Hubei Province)</p><p>　　劉杰 (湖北省計(jì)量測(cè)試技術(shù)研究院)</p><p>　　Liu Jie (Institute of Measuring and Testing Technology of Hubei Prov

15、ince)</p><p><b>　　目 錄</b></p><p><b>　　Content </b></p><p>　　1范圍···············&#

16、183;····································

17、··················（1）</p><p>　　1 Scope ------------------------------------------------------------- (1)</p>&

18、lt;p>　　2引用文獻(xiàn)··································&

19、#183;·······························（1）</p><p>　　2 C

20、ited References ---------------------------------------------- (1)</p><p>　　3概述·····················&#

21、183;····································

22、···········（1）</p><p>　　3 Overview --------------------------------------------------------- (1)</p><p>　　4計(jì)量性能要求····&#

23、183;····································

24、·····················（1）</p><p>　　4 Requirements of Measurement Performances ---------( 1)</p>

25、<p>　　5通用技術(shù)要求·································

26、3;····························（2）</p><p>　　5 General Technical Requ

27、irements ---------------------------------- (2)</p><p>　　S.1銘牌························&

28、#183;····································

29、;·······（2）</p><p>　　S.1 Nameplate ---------------------------------------------------- (2)</p><p>　　S.2外觀(guān)與質(zhì)量········&#

30、183;····································

31、················（2）</p><p>　　S.2 Appearance and Quality ------------------------------------ (2)</p><p>　　S.3顯示與輸出

32、····································

33、3;·························（2）</p><p>　　S.3 Display and Output -------------------

34、----------------------- (2)</p><p>　　6計(jì)量器具控制···························&

35、#183;··································（2）</p&g

36、t;<p>　　6 Control of Measuring Instruments ----------------------------------- (2)</p><p>　　6.1檢定條件·················

37、;····································

38、83;···········（2）</p><p>　　6.1 Verification Conditions ------------------------------------------------------ (2)</p><p>　　6.2檢定項(xiàng)目和檢定方法

39、3;····································&#

40、183;·················（3）</p><p>　　6.2 Verification Items and Verification Method ------------------------------- (3)</p

41、><p>　　6.3檢定結(jié)果的處理································&

42、#183;··························（4）</p><p>　　6.3 Processing of Verification Re

43、sults ------------------------------- (4)</p><p>　　6.4檢定周期·························

44、;····································

45、83;···（5）</p><p>　　6.4 Calibrating Cycle --------------------------------------- (5)</p><p>　　附錄A引伸計(jì)檢定證書(shū)內(nèi)頁(yè)············&

46、#183;····································

47、;··（6）</p><p>　　Appendix A Inner Sheet of Verification Certificate of Extensometer ------- (6)</p><p>　　附錄B引伸計(jì)檢定記錄格式···········&#

48、183;····································

49、···（7）</p><p>　　Appendix B Format of Verification Record of Extensometer -------- (7)</p><p>　　附錄C引伸計(jì)的誤差帶示例············

50、····································

51、3;··（8）</p><p>　　Appendix C Demonstration of Error Bands of Extensometer ---------(8) </p><p>　　附錄D引伸計(jì)檢定示例·············

52、····································

53、3;·····（9）</p><p>　　Appendix D Verification Demonstration of Extensometer --------- (9)</p><p><b>　　引伸計(jì)檢定規(guī)程</b></p><p>　　Verification Regulation

54、 for Extensometer</p><p><b>　　1范圍</b></p><p><b>　　1 Scope</b></p><p>　　本規(guī)程適用于引伸計(jì)的首次檢定、后續(xù)檢定和使用中檢定。</p><p>　　The regulation applies to the first-t

55、ime, follow-up and in-service verifications in use of extensometer.</p><p><b>　　2 引用文獻(xiàn)</b></p><p>　　2 Cited References</p><p><b>　　本規(guī)程引用下列文獻(xiàn)</b></p>&

56、lt;p>　　The regulation refers to the following documents</p><p>　　GB/T 228—2002《金屬材料室溫拉伸試驗(yàn)方法》</p><p>　　GB/T 228—2002 Metallic Materials Tensile Testing at Ambient Temperature </p><p

57、>　　GB/T 1040.1——2006《塑料拉伸性能的測(cè)定 第1部分：總則》</p><p>　　GB/T 1040.1——2006 Determination of Tensile Properties of Plastics Part 1: General Principles</p><p>　　GB/T 7314—2005《金屬材料 室溫壓縮拉伸試驗(yàn)方法》</p

58、><p>　　GB/T 7314—2005 Metallic Materials Compression and Tensile Testing at</p><p>　　Ambient Temperature</p><p>　　GB/T 12160—2002/ISO 953：1999《單軸實(shí)驗(yàn)用引伸計(jì)的標(biāo)定》</p><p>　　GB/T 1

59、2160—2002/ISO 953：1999 Calibration of Extensometer in Uniaxial</p><p>　　Experiment</p><p>　　JJF 1096—2002《引伸計(jì)標(biāo)定器校準(zhǔn)規(guī)范》</p><p>　　JJF 1096—2002 Standard Calibration of Extensometer Des

60、ignator</p><p>　　ASTM E83—02 Standard Practice for Verification and Classification of Extensometer System</p><p>　　適用本規(guī)程時(shí)，應(yīng)注意使用上述引用文獻(xiàn)的現(xiàn)行有效版本。</p><p>　　Please pay attention to the cu

61、rrent valid version of the cited documents above while using the regulation.</p><p><b>　　3 概述</b></p><p>　　3 Overview</p><p>　　3.1 引伸計(jì)是試驗(yàn)機(jī)對(duì)試樣施加軸向力時(shí)，測(cè)量試樣線(xiàn)變形的裝置，包括測(cè)量、指示或記

62、錄系統(tǒng)。根據(jù)結(jié)構(gòu)特點(diǎn)，分為電子式和機(jī)械式兩種。</p><p>　　3.1 Extensometer is a device applied to measurement of sample line deformation while axial force is pressed onto the sample by the testing machine, including measuring, indic

63、ating or recording system. According to structural characteristics, it can be divided into electronic extensometer and mechanical extensometer.</p><p>　　注：電子式引伸計(jì)，如電阻應(yīng)變式、電感式引伸計(jì)，其工作需配備相應(yīng)的放大器、計(jì)算機(jī)或指示裝置能自動(dòng)記錄或顯示所測(cè)

64、位移示值。故標(biāo)定電子式引伸計(jì)時(shí)必須包括與其配套的整個(gè)測(cè)量系統(tǒng)。機(jī)械式引伸計(jì)，如百分表式、杠桿式、光學(xué)式引伸計(jì)，是由指針或光標(biāo)直接指示位移示值。</p><p>　　Note: The operation of electronic extensometer, such as resistance strain gauge extensometer and inductive extensometer, shoul

65、d be equipped with the appropriate amplifier, computer or indicating device to record or show the measured displacement values automatically. Therefore, the calibration of electronic extensometer must include its entire

66、supporting measurement system. Mechanical extensometer, such as dial indicator extensometer, lever-type extensometer and optical extensometer, indicate di</p><p>　　引伸計(jì)檢定時(shí)應(yīng)獲得引伸計(jì)系統(tǒng)最終位移量值的信息。</p><p&g

67、t;　　3.2 Information of the final displacement value of the extensometer system should be obtained while using extensometer for verification.</p><p>　　對(duì)引伸計(jì)的檢定就是將引伸計(jì)的讀數(shù)與標(biāo)定器給定的已知長(zhǎng)度的變化量進(jìn)行比較對(duì)引伸計(jì)分級(jí)并確定引伸計(jì)的準(zhǔn)確度，以滿(mǎn)足GB

68、/T 228、GB/T 1040、GB/T 7314等拉伸和壓縮試驗(yàn)方法標(biāo)準(zhǔn)對(duì)引伸計(jì)的要求，保證材料試驗(yàn)結(jié)果的正確性。</p><p>　　3.3 By comparing the indication of extensometer with the variation quantity of a known length given by the designator, the classification

69、and accuracy of the extensometers can be made to meet the needs in the tensile and compression testing with extensometer of GB/T 228, GB/T 1040, GB/T 7314 and so on, which can ensure the accuracy of material test results

70、.</p><p><b>　　4計(jì)量性能要求</b></p><p>　　4 Requirements of Measurement Performances</p><p>　　4.1各級(jí)別引伸計(jì)的標(biāo)距相對(duì)誤差，應(yīng)符合表1的規(guī)定。</p><p>　　4.1 The gauge length relative err

71、or of extensometer of various levels should meet the requirements in Table 1.</p><p>　　4.2各級(jí)別引伸計(jì)的分辨力，應(yīng)符合表1的規(guī)定。</p><p>　　4.2 The resolving power of extensometer of various levels should meet the

72、requirements in Table 1.</p><p>　　4.3各級(jí)別引伸計(jì)的示值誤差、示值進(jìn)回程相對(duì)誤差，應(yīng)符合表1的規(guī)定。</p><p>　　4.3 The indication error, relative error between forward and backward in indicating value of extensometer of various

73、 levels should meet the requirements in Table 1. </p><p>　　表1 引伸計(jì)計(jì)量特性</p><p>　　Table 1 Metrological Characteristics of Extensometer</p><p>　　4.4各級(jí)別引伸計(jì)檢定范圍，應(yīng)根據(jù)用戶(hù)需要或被測(cè)材料性能所需的測(cè)量范圍確定。&

74、lt;/p><p>　　在引伸計(jì)全量程內(nèi)可以分多個(gè)測(cè)量范圍進(jìn)行檢定。</p><p>　　4.4 Verification range of extensometer of all levels should be determined according to the customers` needs or the measurement range required by characte

75、ristics of tested materials. Within the full-scale range of extensometer, verification can be made in multiple measurement ranges.</p><p><b>　　5通用技術(shù)要求</b></p><p>　　5 General Technica

76、l Requirements</p><p><b>　　5.1銘牌</b></p><p>　　5.1 Nameplate</p><p>　　引伸計(jì)及配套儀器的銘牌上，應(yīng)標(biāo)明儀器名稱(chēng)、型號(hào)、制造廠(chǎng)名、產(chǎn)品編號(hào)和出廠(chǎng)</p><p><b>　　日期。</b></p><p&g

77、t;　　Name of the equipment, model number, manufacturer name, product number and date of manufacture should be indicated on the nameplates of extensometer and its supporting equipment.</p><p><b>　　5.2外觀(guān)與

78、質(zhì)量</b></p><p>　　5.2 Appearance and Quality</p><p>　　引伸計(jì)及其附件不應(yīng)有明顯的機(jī)械損傷;刀刃、軸尖等設(shè)定標(biāo)距的結(jié)構(gòu)不應(yīng)有明顯</p><p>　　磨損;指示裝置和測(cè)量機(jī)構(gòu)不應(yīng)有影響測(cè)量結(jié)果的缺陷。</p><p>　　There should be no significan

79、t mechanical damage in extensometer and its annexes, no significant abrasion in the blade, pivot and other structures used to set gauge length, and no defect which can affect the measurement results in indicating devices

80、 and measuring mechanism. </p><p><b>　　5.3顯示與輸出</b></p><p>　　5.3 Display and Output</p><p>　　電子式引伸計(jì)的顯示應(yīng)清晰、完整、穩(wěn)定，打印結(jié)果或繪制的曲線(xiàn)應(yīng)與示值一致。</p><p>　　Display of electr

81、onic extensometer should be clear, complete and stable, and the print results or the drawn curve should be consistent with the indication value.</p><p><b>　　6計(jì)量器具控制</b></p><p>　　6 Co

82、ntrol of Measuring Instruments</p><p>　　計(jì)量器具控制包括:首次檢定、后續(xù)檢定和使用中檢驗(yàn)</p><p>　　Control of measuring instruments include the initial verification, subsequent verification and verification in use.</

83、p><p><b>　　6.1檢定條件</b></p><p>　　6.1 Verification Conditions</p><p><b>　　6.1.1環(huán)境條件</b></p><p>　　6.1.1 Environmental Conditions</p><p>　

84、　檢定溫度范圍應(yīng)為23℃±5℃，檢定時(shí)的溫度應(yīng)穩(wěn)定，溫度變化不應(yīng)超過(guò)2℃，檢</p><p>　　定過(guò)程不允許有影響引伸計(jì)檢定結(jié)果的空氣對(duì)流。</p><p>　　The range of verification temperature should be 23 ℃ ± 5℃, while the temperature should be stable and th

85、e change should not exceed 2℃. The air convection which can affect the verification results during the process is not allowed.</p><p>　　對(duì)10℃~35℃溫度范圍內(nèi)試驗(yàn)用引伸計(jì)，如有條件，也可在試驗(yàn)溫度或接近試驗(yàn)</p><p><b>　　溫度

86、下進(jìn)行檢定。</b></p><p>　　Trying using the extensometer at the temperature from 10 ℃ to 35 ℃ if allowed, verification can also be made at the trial temperature or one close to it.</p><p>　　引伸計(jì)和標(biāo)

87、定器應(yīng)在同一室溫放置不少于30min的時(shí)間，待溫度平衡后再進(jìn)行</p><p><b>　　檢定。</b></p><p>　　Extensometer and designator should be placed at the same ambient temperature for no less than 30mins until the temperatur

88、e equilibrium is reached.</p><p>　　6 .1 .2檢定用標(biāo)準(zhǔn)器具</p><p>　　6.1.2 Standard Equipment for Verification</p><p>　　6 .1 .2.1引伸計(jì)標(biāo)定器應(yīng)符合JJF 1096-2002的要求，其允許誤差應(yīng)符合表2的</p><p><

89、b>　　規(guī)定。</b></p><p>　　6.1.2.1 Extensometer designator should meet the requirements of JJF1096-2002, and the permissible error should meet the regulation in Table 2.</p><p>　　表2 標(biāo)定器計(jì)量特性&

90、lt;/p><p>　　Table 2 Metrological Characteristics of Calibration Device</p><p>　　6 .1 .2.2 測(cè)量引伸計(jì)標(biāo)距用的游標(biāo)卡尺或工具顯微鏡，其最大允許誤差不應(yīng)大于引伸 </p><p>　　計(jì)標(biāo)距最大允許誤差的1/3。</p><p>　　6.1.2.2 The m

91、aximum permissible error of the venire caliper or tool microscope used to measure extensometer gauge length should not exceed one third of the maximum permissible error of extensometer.</p><p>　　6.2檢定項(xiàng)目和檢定方法

92、</p><p>　　6.2 Verification Items and Verification Method</p><p>　　首次檢定、后續(xù)檢定和使用中檢驗(yàn)相同。</p><p>　　The verification items and verification method are the same in the initial verification

93、, subsequent verification and verification in use.</p><p><b>　　6.2.1外觀(guān)檢查</b></p><p>　　6.2.1 Appearence Inspection</p><p>　　通過(guò)觀(guān)察和實(shí)際操作，對(duì)第5章規(guī)定的內(nèi)容進(jìn)行檢查。</p><p>　

94、　Inspect the contents required in Chapter 5 through observation and practice.</p><p>　　6.2.2 安裝要求</p><p>　　6.2.2 Installation Requirements</p><p>　　引伸計(jì)應(yīng)以常規(guī)試驗(yàn)時(shí)所使用的位置和方向安裝到標(biāo)定器上，并避免由于失

95、去平衡或引伸計(jì)任何一部分的變形所產(chǎn)生的誤差。</p><p>　　Extensometer should be installed onto the designator with the location and direction used in conventional trial, which can avoid error because of loss of balance or deformatio

96、n on any part of extensometer.</p><p>　　檢定時(shí)所采用的引伸計(jì)的標(biāo)距、放大倍數(shù)、裝卡方法、位移方向、數(shù)據(jù)的讀取和記</p><p>　　錄方法以及記錄程序，應(yīng)盡可能與使用狀態(tài)一致。</p><p>　　Gauge length, amplification factor, method of installing cards,

97、 the displacement direction, reading, recording methods and the recording procedures of the data of the extensometer used for the verification should be consistent with those while it is used as far as possible.</p&g

98、t;<p>　　6.2.3 引伸計(jì)標(biāo)距的檢定 </p><p>　　6.2.3 The Verification of Extensometer Gauge Length</p><p>　　對(duì)于可直接測(cè)定標(biāo)距的引伸計(jì)，測(cè)量時(shí)應(yīng)在完成安裝的準(zhǔn)備工作后，直接測(cè)定其標(biāo)</p><p>　　距。不能直接測(cè)量時(shí)，可將引伸計(jì)安裝在軟金屬試樣上，測(cè)量引伸計(jì)刀刃或軸

99、尖在試樣留下印痕間的距離。 </p><p>　　As for the extensometer whose gauge length can be measured directly, the measurement should be implemented after finishing preparation for the installation. While the measurement cann

100、ot be made directly, extensometer can be installed onto the soft metal sample to measure the distance of prints in the sample left by blade or shaft tip of the extensometer.</p><p>　　每個(gè)標(biāo)距測(cè)量3次，每次測(cè)定的引伸計(jì)標(biāo)距相對(duì)誤差均

101、應(yīng)滿(mǎn)足表1的要求。</p><p>　　Each gauge length should be measured for three times, and the relative error of extensometer gauge length each time should meet the requirements of Table 1.</p><p>　　引伸計(jì)標(biāo)距相對(duì)誤差

102、按公式(1)計(jì)算。</p><p>　　The relative error of extensometer gauge length can be calculated according to Formula (1).</p><p>　　qLe=×100% (1)</p><p>　　式中：qLe—引伸計(jì)標(biāo)距相對(duì)誤

103、差，</p><p>　　In Formula (1) : qLe—the relative error of extensometer gauge length,</p><p>　　引伸計(jì)標(biāo)距的測(cè)量值，mm;</p><p>　　Le’— measured value of extensometer gauge length, mm,</p>&l

104、t;p>　　Le—引伸計(jì)標(biāo)距的標(biāo)準(zhǔn)值，mm.</p><p>　　Le—standard value of extensometer gauge length, mm. </p><p>　　當(dāng)引申計(jì)具有多個(gè)標(biāo)準(zhǔn)時(shí)，應(yīng)分別對(duì)每個(gè)標(biāo)距進(jìn)行檢定。</p><p>　　Each gauge length should be tested separately w

105、hen there are multiple criteria for extensometer.</p><p>　　對(duì)于以試樣確定標(biāo)距的引伸計(jì)(例如以試樣直徑或?qū)挾却_定引伸計(jì)標(biāo)距、帶凸耳試</p><p>　　樣由兩凸耳的中心線(xiàn)距離確定引伸計(jì)標(biāo)距).被測(cè)試樣標(biāo)距的相對(duì)誤差應(yīng)與待用引伸計(jì)</p><p>　　相應(yīng)級(jí)別的允許誤差相符。</p><

106、p>　　As for the extensometer whose gauge length is determined by sample (such as determining the gauge length with the diameter or width of the sample, or with the center line distance between the two lugs of lug-type

107、sample), the relative error of gauge length of test sample should be consistent with the permissible error in corresponding level of extensometer prepared for using.</p><p><b>　　3</b></p>

108、<p>　　6.2.4分辨力的檢定</p><p>　　6.2.4 Verification of Resolving Power</p><p>　　絕對(duì)分辨力γ是從引伸計(jì)的指示裝置上能讀取的最小量值。相對(duì)分辨力是從儀器</p><p>　　上能讀取的最小量值γ與引伸計(jì)指示的位移li之比值。目測(cè)檢查并計(jì)算引伸計(jì)的分辨</p><p&g

109、t;　　力，其結(jié)果應(yīng)滿(mǎn)足表1的要求。</p><p>　　The absolute resolving power γ is the minimum value that can be read from the indicating device of extensometer. The relative resolving power is the ratio of the minimum value γ t

110、hat can be read from the instrument divided by displacement li indicated by extensometer. Visually inspect and calculate the resolving power of the extensometer, and its results should meet the requirements in Table 1.&l

111、t;/p><p>　　6 .2 .5 示值誤差的檢定</p><p>　　6.2.5 Verification of Indication Error</p><p>　　6 .2.5.1 當(dāng)溫度已經(jīng)穩(wěn)定，檢定前用標(biāo)定器對(duì)引伸計(jì)至少預(yù)加對(duì)應(yīng)于該引伸計(jì)檢定范</p><p>　　圍的兩次位移。并檢查其回零正常后，再給引伸計(jì)施加一個(gè)很小的負(fù)位移后

112、返回到零位，并將引伸計(jì)重新調(diào)零。</p><p>　　6.2.5.1 When the temperature is stable, before the verification at least two corresponding displacement should be added in the range of verification of the extensometer through desi

113、gnator.</p><p>　　依據(jù)4.4確定的檢定范圍進(jìn)行檢定。</p><p>　　6.2.5.2 Start the verification according to the range determined in 4.4.</p><p>　　檢定要做三組測(cè)量，每組測(cè)量一般不少于10個(gè)測(cè)量點(diǎn)（不包括零點(diǎn)）。根據(jù)選定的檢定范圍用標(biāo)定器對(duì)引伸計(jì)逐點(diǎn)施加給定

114、位移，達(dá)到檢定范圍的最大位移時(shí)，再返回到零位。第一組測(cè)量完成后，取下引伸計(jì)，再重新裝到標(biāo)定器上，然后用與第一組相同的方法連續(xù)進(jìn)行第二組和第三組測(cè)量。</p><p>　　Verification includes three sets of measurements, each of which should include no less than 10 measurement points (excludin

115、g zero). According to the selected verification range, with a designator the given displacement is applied to the extensometer point by point and return to the zero after reaching the maximum displacement in the range of

116、 extensometer. After the first set of measurements, remove the extensometer, re-install it to the designator, and then continue the rest two sets of measurem</p><p>　　檢測(cè)點(diǎn)應(yīng)根據(jù)實(shí)際使用情況分配，采取相對(duì)的均勻分布。</p><

117、;p>　　Points should be allocated based on actual usage, taking a relatively uniform distribution.</p><p>　　對(duì)用于測(cè)量規(guī)定非比例延伸強(qiáng)度（或規(guī)定非比例壓縮強(qiáng)度）的引伸計(jì)，第一個(gè)檢測(cè)點(diǎn)位移值，一般不應(yīng)超過(guò)實(shí)際試驗(yàn)時(shí)規(guī)定非比例延伸量。用于測(cè)量彈性模量時(shí)，檢定的第一點(diǎn)位移值，一般不應(yīng)超過(guò)被測(cè)材料彈性直線(xiàn)段終點(diǎn)

118、對(duì)應(yīng)延伸量的50％。</p><p>　　As for the extensometer which is used to measure stipulated non-proportional extension strength (or stipulated non-proportional compression strength), the displacement of the first point

119、generally should not exceed stipulated non-proportional elongation. While measuring the elastic modulus, the first displacement generally should not exceed 50% of the corresponding elongation of the end point in the elas

120、tic straight line of the measured materials.</p><p>　　對(duì)于某一給定位移，引伸計(jì)示值相對(duì)誤差按公式（2）計(jì)算</p><p>　　For a given displacement, the relative error of indication values of extensometer should be calculated a

121、ccording to Formula (2)</p><p>　　q=×100％ （2）</p><p>　　式中： q------引伸計(jì)示值進(jìn)回程相對(duì)誤差，%;</p><p>　　In Formula (2): q----relative error between forward and backward in indicating

122、value, %,</p><p>　　li------同一檢測(cè)點(diǎn)引伸計(jì)指示的回程位移示值，mm;</p><p>　　li ------ the backward displacement value indicated by extensometer in the same point, mm,</p><p>　　lt-------同一檢測(cè)點(diǎn)引伸計(jì)指示的進(jìn)程位

123、移示值，mm。</p><p>　　lt-------the forward displacement value indicated by the extensometer in the same point, mm,</p><p>　　需要時(shí)，應(yīng)對(duì)引伸計(jì)的進(jìn)回程同時(shí)進(jìn)行檢定（例如：以滯后環(huán)法測(cè)定規(guī)定非比例延伸強(qiáng)度Rp或測(cè)定規(guī)定殘余延伸強(qiáng)度Rr用的引伸計(jì)）。檢定時(shí)，在進(jìn)行6.2.5.2

124、規(guī)定的每組測(cè)量的過(guò)程中，應(yīng)先從零位以進(jìn)程逐點(diǎn)施加到檢定范圍的最大位移，再以回程逐點(diǎn)返回到零位，如此進(jìn)行三組測(cè)量。檢定范圍的最大值一般取所用引伸計(jì)標(biāo)距的2％。</p><p>　　6.2.5.3 When necessary, the forward and backward stroke of the extensometer should be tested at the same time. (Example

125、: the extensometer used to test stipulated non-proportional extension strength Rp with the method of hysteresis loop, or test stipulated residual extension strength Rr). During the verification of each set of measurement

126、s regulated in 6.2.5, the process should start from zero position to the maximum displacement of the verification range point by point of the process stroke, the</p><p>　　引伸計(jì)的示值進(jìn)回程相對(duì)誤差u按公式（3）計(jì)算：</p>&

127、lt;p>　　The relative error between forward and backward in indicating value of the extensometer u can be calculated according to Formula (3):</p><p>　　u=×100％ （3）</p><p>　　式中：q——

128、引伸計(jì)示值進(jìn)回程相對(duì)誤差，％；</p><p>　　In Formula (3): q----- the relative error between forward and backward in indicating value of the extensometer, %,</p><p>　　li′——同一檢測(cè)點(diǎn)引伸計(jì)指示的回程位移示值，mm；</p><p&g

129、t;　　li' ---- the backward displacement value indicated by the extensometer in the same point, mm,</p><p>　　li——同一檢測(cè)點(diǎn)引伸計(jì)指示的回程位移示值，mm。</p><p>　　li -- the backward displacement value indicated

130、by the extensometer in the same measuring point, mm,</p><p><b>　　檢定結(jié)果的處理</b></p><p>　　6.3 Handling of Verification Results</p><p>　　6.3.1 按本規(guī)程檢定結(jié)果評(píng)定引伸計(jì)的級(jí)別，并發(fā)給檢定證書(shū)。證書(shū)內(nèi)頁(yè)格式

131、見(jiàn)</p><p><b>　　附錄A.</b></p><p>　　6.3.1 Assess the level of extensometer according to results and issue Verification Certificate. Format of the inner sheet of the certificate can be se

132、en in Appendix A.</p><p>　　檢定不合格的引伸計(jì)，發(fā)給檢定結(jié)果通知書(shū)。并注明不合格項(xiàng)目，內(nèi)頁(yè)格式見(jiàn)</p><p><b>　　4</b></p><p><b>　　附錄A.</b></p><p>　　Unqualified extensometer through v

133、erification will be given Notice of Verification Results. The unqualified items should be indicated in the Notice of Verification Results, and format of the inner sheet of the Notice can be seen in Appendix A.</p>