欢迎来到麦多课文档分享! | 帮助中心 海量文档,免费浏览,给你所需,享你所想!
麦多课文档分享
全部分类
  • 标准规范>
  • 教学课件>
  • 考试资料>
  • 办公文档>
  • 学术论文>
  • 行业资料>
  • 易语言源码>
  • ImageVerifierCode 换一换
    首页 麦多课文档分享 > 资源分类 > PDF文档下载
    分享到微信 分享到微博 分享到QQ空间

    ANSI ASTM C695-2015 Standard Test Method for Compressive Strength of Carbon and Graphite《碳与石墨压强试验方法》.pdf

    • 资源ID:432217       资源大小:116.80KB        全文页数:3页
    • 资源格式: PDF        下载积分:2000积分
    快捷下载 游客一键下载
    账号登录下载
    微信登录下载
    二维码
    微信扫一扫登录
    下载资源需要2000积分(如需开发票,请勿充值!)
    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)。
    如需开发票,请勿充值!如填写123,账号就是123,密码也是123。
    支付方式: 支付宝扫码支付    微信扫码支付   
    验证码:   换一换

    加入VIP,交流精品资源
     
    账号:
    密码:
    验证码:   换一换
      忘记密码?
        
    友情提示
    2、PDF文件下载后,可能会被浏览器默认打开,此种情况可以点击浏览器菜单,保存网页到桌面,就可以正常下载了。
    3、本站不支持迅雷下载,请使用电脑自带的IE浏览器,或者360浏览器、谷歌浏览器下载即可。
    4、本站资源下载后的文档和图纸-无水印,预览文档经过压缩,下载后原文更清晰。
    5、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。

    ANSI ASTM C695-2015 Standard Test Method for Compressive Strength of Carbon and Graphite《碳与石墨压强试验方法》.pdf

    1、Designation: C695 15 An American National StandardStandard Test Method forCompressive Strength of Carbon and Graphite1This standard is issued under the fixed designation C695; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the yea

    2、r of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S. Department of Defense.1. Scope*1.1 This test method covers th

    3、e determination of the com-pressive strength of carbon and graphite at room temperature.1.2 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standa

    4、rd.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Reference

    5、d Documents2.1 ASTM Standards:2E4 Practices for Force Verification of Testing MachinesE177 Practice for Use of the Terms Precision and Bias inASTM Test MethodsE691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test Method3. Terminology3.1 Definitions:3.1.1 compressi

    6、ve strength, nproperty of solid materialthat indicates its ability to withstand a uniaxial compressiveload.4. Significance and Use4.1 Carbon and graphite can usually support higher loads incompression than in any other mode of stress. This test,therefore, provides a measure of the maximum load-beari

    7、ngcapability of carbon and graphite objects.5. Apparatus5.1 Test Machine, conforming to Practice E4 and to therequirements for speed of testing prescribed in Section 8 of thistest method.5.2 Spherical Bearing Blocks attached to the upper or lowerhead of the machine in such a manner that the spherica

    8、lsurfaces are in full contact when not loaded. The center ofcurvative of the spherical surface shall lie on the surface thatcontacts the specimen and on the machine axis. The sphericalsurfaces shall be well-lubricated. The radius of the sphericalsurface shall be equal to or greater than the radius o

    9、f the testspecimen.5.3 Steel Contact Blocks may be used above or below thespecimen, or both, to protect fixture and test machine surfacesfrom damage, as illustrated in Fig. 1 and Fig. 2. Contact blocksurfaces shall be plane and parallel to within 0.0005 in./in.(0.0005 mm/mm).5.4 All load-bearing mac

    10、hine and fixture surfaces shall havea minimum hardness of 45 HRC and surface finish of 16 in.(0.4 m) rms maximum. Surfaces in contact with the specimenshall be flat to less than 0.0005 in./in. (0.0005 mm/mm).5.5 Examples of arrangements of the load train are shownschematically in Fig. 1 and Fig. 2.6

    11、. Sampling6.1 Samples may be taken from locations and orientationsthat satisfy the objectives of the test.7. Test Specimen7.1 The test specimen shall be a right cylinder with endsmachined to yield planar and parallel faces. These faces shallbe perpendicular to the cylindrical surface to within 0.001

    12、in./in. (0.001 mm/mm) of diameter total indicator reading. Allsurfaces shall have a surface finish visually comparable to 32in. (0.8 m) rms or better. Reasonable care should beexercised to assure that all edges are sharp and without chips orother flaws.7.2 The diameter of the test specimen shall be

    13、greater thanten times the maximum particle size of the carbon or graphite.The ratio of height to diameter may vary between 1.9 and 2.1.1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility ofSubcommittee

    14、D02.F0 on Manufactured Carbon and Graphite Products.Current edition approved June 1, 2015. Published July 2015. Originally approvedin 1971. Last previous edition approved in 2010 as C695 91 (2010). DOI:10.1520/C0695-15.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact A

    15、STM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Consho

    16、hocken, PA 19428-2959. United States1The recommended minimum test specimen size is38 in. (9.5mm) diameter by34 in. (19 mm) high.8. Procedure8.1 Center the specimen in the machine between the contactsurfaces. The deviation of the specimen axis from the machineaxis shall be less than 5 % of the specim

    17、en diameter. Centeringcan be assisted by appropriate circles marked on the contactsurfaces.8.2 Place an appropriate guard around the specimen todeflect flying fragments at failure.8.3 Apply the load continuously, at a constant rate ofcrosshead or platen movement, and without shock until ulti-mate fa

    18、ilure. Choose the rate of movement so that averagerupture time is greater than 30 s.8.4 If the test machine is equipped with a load or strainpacing device, a constant load or strain rate may be used.9. Calculation9.1 Calculate the compressive strength of each specimen asfollows:C 5 W/Awhere:C = comp

    19、ressive strength of specimen, psi (or MPa),W = total load on the specimen at failure, lbf (or N), andA = calculated area of the gage section of the specimen, in.2(or mm2).10. Report10.1 The report shall include the following:10.1.1 Type of testing machine, hydraulic or screw,10.1.2 Type and size of

    20、contact blocks,10.1.3 General description of material being tested,10.1.4 Dimensions, location, and orientation of specimens,10.1.5 Details of specimen preparation,FIG. 1 Elements of Compressive Strength Load TrainFIG. 2 Compressive Test Arrangement with Spherical Blocks on BottomC695 15210.1.6 Rate

    21、 of crosshead or platen movement, or load rate,or strain rate,10.1.7 Load at failure, failure mode, and compressivestrength of each specimen, and10.1.8 Mean compressive strength and standard deviationfor material tested.11. Precision and Bias311.1 PrecisionThe precision statements given in this sec-

    22、tion are based on the comparison of the mean strength by theStudent “t” test and carrying out the statistical analysis of thedata obtained in a round robin as recommended by PracticeE691. The round robin was carried out on two materials.11.1.1 Comparison of the MeansThe comparison of themeans by the

    23、 Student “t” test leads to the conclusion that theaverage strength values measured by each laboratory on eachmaterial can be considered statistically equal at 95 % confi-dence level.11.1.2 Repeatability (Single Instrument) The precisionwithin laboratory of two single values of measured strengthusing

    24、 Practice E177 definition with the pooled standard devia-tion calculated using Practice E691:Repeatability within laboratory 5 2 Sr!jwhich yields a value for the materials used in the round robinof 469 psi (3.2 MPa) for one material and 522 psi (3.6 MPa) forthe other. These values convert into stren

    25、gth percentages of 65for one material and 62.5 for the other.11.1.3 Repeatability (Multi-Instrument) The precision be-tween laboratories of two single values of measured strengthusing Practice E177 definition with the component of variancebetween laboratories calculated using Practice E691 is:Repeat

    26、ability between laboratories 5 2 SL!jwhich yields a value for the materials used in this roundrobin of 347 psi (2.4 MPa) for one material and 135 psi (1MPa) for the other. This converts into strength percentages of63 for one material and 61 for the other.11.2 BiasNo true statement on bias can be mad

    27、e becauseno reference carbon or graphite material exists.12. Keywords12.1 carbon; compressive strength; graphiteSUMMARY OF CHANGESSubcommittee D02.F0 has identified the location of selected changes to this standard since the last issue(C695 91 (2010) that may impact the use of this standard. (Approv

    28、ed June 1, 2015.)(1) Revised Section 3.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the

    29、riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of

    30、this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldma

    31、ke your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained

    32、by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ data have been filed at ASTM International Headquarters and maybe obtained by requesting Research Report RR:C05-1010.C695 153


    注意事项

    本文(ANSI ASTM C695-2015 Standard Test Method for Compressive Strength of Carbon and Graphite《碳与石墨压强试验方法》.pdf)为本站会员(李朗)主动上传,麦多课文档分享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档分享(点击联系客服),我们立即给予删除!




    关于我们 - 网站声明 - 网站地图 - 资源地图 - 友情链接 - 网站客服 - 联系我们

    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 

    收起
    展开