ASTM C1323-2010 Standard Test Method for Ultimate Strength of Advanced Ceramics with Diametrally Compressed C-Ring Specimens at Ambient Temperature《环境温度下径向压缩C环样品的高级陶瓷的极限强度的标准试验方法》.pdf
《ASTM C1323-2010 Standard Test Method for Ultimate Strength of Advanced Ceramics with Diametrally Compressed C-Ring Specimens at Ambient Temperature《环境温度下径向压缩C环样品的高级陶瓷的极限强度的标准试验方法》.pdf》由会员分享,可在线阅读,更多相关《ASTM C1323-2010 Standard Test Method for Ultimate Strength of Advanced Ceramics with Diametrally Compressed C-Ring Specimens at Ambient Temperature《环境温度下径向压缩C环样品的高级陶瓷的极限强度的标准试验方法》.pdf(8页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: C1323 10Standard Test Method forUltimate Strength of Advanced Ceramics with DiametrallyCompressed C-Ring Specimens at Ambient Temperature1This standard is issued under the fixed designation C1323; the number immediately following the designation indicates the year oforiginal adoption or
2、, in the case of revision, the year 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.1. Scope*1.1 This test method covers the determination of ultimatestrength under monotonic
3、loading of advanced ceramics intubular form at ambient temperatures. The ultimate strength asused in this test method refers to the strength obtained undermonotonic compressive loading of C-ring specimens such asshown in Fig. 1 where monotonic refers to a continuousnonstop test rate with no reversal
4、s from test initiation to finalfracture. This method permits a range of sizes and shapes sincetest specimens may be prepared from a variety of tubularstructures. The method may be used with microminiature testspecimens.1.2 The values stated in SI units are to be regarded asstandard. No other units o
5、f measurement are included in thisstandard.1.2.1 Values expressed in this test method are in accordancewith the International System of Units (SI) and IEEE/ASTM SI10.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of t
6、he user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2C1145 Terminology of Advanced CeramicsC1161 Test Method for Flexural Strength of AdvancedCeramics at Ambie
7、nt TemperatureC1239 Practice for Reporting Uniaxial Strength Data andEstimating Weibull Distribution Parameters for AdvancedCeramicsC1322 Practice for Fractography and Characterization ofFracture Origins in Advanced CeramicsC1368 Test Method for Determination of Slow CrackGrowth Parameters of Advanc
8、ed Ceramics by ConstantStress-Rate Flexural Testing at Ambient TemperatureC1683 Practice for Size Scaling of Tensile Strengths UsingWeibull Statistics for Advanced CeramicsE4 Practices for Force Verification of Testing MachinesE6 Terminology Relating to Methods of Mechanical TestingE337 Test Method
9、for Measuring Humidity with a Psy-chrometer (the Measurement of Wet- and Dry-Bulb Tem-peratures)IEEE/ASTM SI 10 American National Standard for Use ofthe International System of Units (SI): The Modern MetricSystem3. Terminology3.1 Definitions:3.1.1 advanced ceramican engineered, high-performance,pred
10、ominately nonmetallic, inorganic, ceramic material havingspecific functional qualities. (C1145)3.1.2 breaking loadthe load at which fracture occurs.(E6)3.1.3 C-ringcircular test specimen geometry with themid-section (slot) removed to allow bending displacement(compression or tension). (E6)3.1.4 flex
11、ural strengtha measure of the ultimate strengthof a specified beam in bending.3.1.5 modulus of elasticitythe ratio of stress to corre-sponding strain below the proportional limit. (E6)3.1.6 slow crack growthsubcritical crack growth (exten-sion) which may result from, but is not restricted to, suchme
12、chanisms as environmentally assisted stress corrosion ordiffusive crack growth.4. Significance and Use4.1 This test method may be used for material development,material comparison, quality assurance, and characterization.Extreme care should be exercised when generating design data.4.2 For a C-ring u
13、nder diametral compression, the maxi-mum tensile stress occurs at the outer surface. Hence, theC-ring specimen loaded in compression will predominately1This test method is under the jurisdiction of ASTM Committee C28 onAdvanced Ceramics and is the direct responsibility of Subcommittee C28.04 onAppli
14、cations.Current edition approved Jan. 1, 2010. Published March 2010. Originallyapproved in 1996. Last previous edition approved in 2007 as C1323 96(2001)e1.DOI: 10.1520/C1323-10.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org.
15、For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.ev
16、aluate the strength distribution and flaw population(s) on theexternal surface of a tubular component. Accordingly, thecondition of the inner surface may be of lesser consequence inspecimen preparation and testing.NOTE 1A C-ring in tension or an O-ring in compression may be usedto evaluate the inter
17、nal surface.4.2.1 The flexure stress is computed based on simplecurved-beam theory (1, 2, 3, 4, 5).3It is assumed that thematerial is isotropic and homogeneous, the moduli of elasticityare identical in compression or tension, and the material islinearly elastic. These homogeneity and isotropy assump
18、tionspreclude the use of this standard for continuous fiber reinforcedcomposites.Average grain size(s) should be no greater than onefiftieth (150) of the C-ring thickness. The simple curved-beamtheory stress solution is in good agreement (typically betterthan 1%) with a theory of elasticity solution
19、 as discussed in (3)for the geometries chosen for this standard. The simple beamtheory stress equations are relatively simple. They are rela-tively easy to integrate for Weibull effective volume oreffective area computations as shown in Appendix X1.4.2.2 The simple curved beam and theory of elastici
20、ty stresssolutions both are two-dimensional plane stress solutions. Theydo not account for stresses in the axial (parallel to b) direction,or variations in the circumferential (hoop, su) stresses throughthe width (b) of the test piece. The variations in the circum-ferential stresses increase with in
21、creases in width (b) and ringthickness (t). The variations can be substantial ( 10 %) for testspecimens with large b.The circumferential stresses peak at theouter edges. Therefore, the width (b) and thickness (t)ofthespecimens permitted in this test method are limited so that axialstresses are negli
22、gible (see Ref. 5) and the variations of thecircumferential stresses from the nominal simple curved beamtheory stress calculations are typically less than 4 %. See Ref.(3) and (4) for more information on the variation of thecircumferential stresses as a function of ring thickness (t) andring width (
23、b).4.2.3 The test piece outer rim corners are vulnerable to edgedamage, another reason to minimize the differences in thecircumferential stresses across the ring outer surface.4.2.4 Other geometry Cring test specimens may be tested,but comprehensive finite element analyses shall be performedto obtai
24、n accurate stress distributions. If strengths are to bescaled (converted) to strengths of other sizes or geometries,then Weibull effective volumes or areas shall be computedusing the results of the finite element analyses.4.3 Because advanced ceramics exhibiting brittle behaviorgenerally fracture ca
- 1.请仔细阅读文档,确保文档完整性,对于不预览、不比对内容而直接下载带来的问题本站不予受理。
- 2.下载的文档,不会出现我们的网址水印。
- 3、该文档所得收入(下载+内容+预览)归上传者、原创作者;如果您是本文档原作者,请点此认领!既往收益都归您。
下载文档到电脑,查找使用更方便
10000 积分 0人已下载
下载 | 加入VIP,交流精品资源 |
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- ASTMC13232010STANDARDTESTMETHODFORULTIMATESTRENGTHOFADVANCEDCERAMICSWITHDIAMETRALLYCOMPRESSEDCRINGSPECIMENSATAMBIENTTEMPERATURE

链接地址:http://www.mydoc123.com/p-464227.html