ASTM C1292-2010 Standard Test Method for Shear Strength of Continuous Fiber-Reinforced Advanced Ceramics at Ambient Temperatures《室温下连续纤维增强高级陶瓷剪切强度的标准试验方法》.pdf
《ASTM C1292-2010 Standard Test Method for Shear Strength of Continuous Fiber-Reinforced Advanced Ceramics at Ambient Temperatures《室温下连续纤维增强高级陶瓷剪切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 C1292-2010 Standard Test Method for Shear Strength of Continuous Fiber-Reinforced Advanced Ceramics at Ambient Temperatures《室温下连续纤维增强高级陶瓷剪切强度的标准试验方法》.pdf(9页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: C1292 10Standard Test Method forShear Strength of Continuous Fiber-Reinforced AdvancedCeramics at Ambient Temperatures1This standard is issued under the fixed designation C1292; the number immediately following the designation indicates the year oforiginal adoption or, in the case of re
2、vision, 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. Scope1.1 This test method covers the determination of shearstrength of continuous fiber-reinforced ceramic
3、composites(CFCCs) at ambient temperature. The test methods addressedare (1) the compression of a double-notched test specimen todetermine interlaminar shear strength and (2) the Iosipescu testmethod to determine the shear strength in any one of thematerial planes of laminated composites. Test specim
4、en fabri-cation methods, testing modes (load or displacement control),testing rates (load rate or displacement rate), data collection,and reporting procedures are addressed.1.2 This test method is used for testing advanced ceramic orglass matrix composites with continuous fiber reinforcementhaving u
5、ni-directional (1-D) or bi-directional (2-D) fiber archi-tecture. This test method does not address composites with(3-D) fiber architecture or discontinuous fiber-reinforced,whisker-reinforced, or particulate-reinforced ceramics.1.3 The values stated in SI units are to be regarded as thestandard and
6、 are in accordance with IEEE/ASTM SI 10.1.4 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
7、limitations prior to use. Specific hazardstatements are given in 8.1 and 8.2.2. Referenced Documents2.1 ASTM Standards:2C1145 Terminology of Advanced CeramicsD695 Test Method for Compressive Properties of RigidPlasticsD3846 Test Method for In-Plane Shear Strength of Rein-forced PlasticsD3878 Termino
8、logy for Composite MaterialsD5379/D5379M Test Method for Shear Properties of Com-posite Materials by the V-Notched Beam MethodE4 Practices for Force Verification of Testing MachinesE6 Terminology Relating to Methods of Mechanical TestingE122 Practice for Calculating Sample Size to Estimate,With Spec
9、ified Precision, the Average for a Characteristicof a Lot or ProcessE177 Practice for Use of the Terms Precision and Bias inASTM Test MethodsE337 Test Method for Measuring Humidity with a Psy-chrometer (the Measurement of Wet- and Dry-Bulb Tem-peratures)E691 Practice for Conducting an Interlaborator
10、y Study toDetermine the Precision of a Test MethodIEEE/ASTM SI 10 American National Standard for Use ofthe International System of Units (SI): The Modern MetricSystem3. Terminology3.1 DefinitionsThe definitions of terms relating to shearstrength testing appearing in Terminology E6 apply to theterms
11、used in this test method. The definitions of terms relatingto advanced ceramics appearing in Terminology C1145 applyto the terms used in this test method. The definitions of termsrelating to fiber-reinforced composites appearing in Terminol-ogy D3878 apply to the terms used in this test method.Addit
12、ional terms used in conjunction with this test method aredefined in the following.3.1.1 advanced ceramicengineered high-performancepredominately nonmetallic, inorganic, ceramic material havingspecific functional attributes.3.1.2 continuous fiber-reinforced ceramic matrix composite(CFCC)ceramic matri
13、x composite in which the reinforcingphase consists of a continuous fiber, continuous yarn, or awoven fabric.3.1.3 shear failure force (F)maximum force required tofracture a shear-loaded test specimen.1This test method is under the jurisdiction of ASTM Committee C28 onAdvanced Ceramics and is the dir
14、ect responsibility of Subcommittee C28.07 onCeramic Matrix Composites.Current edition approved Dec. 1, 2010. Published January 2011. Originallyapproved in 1995. Last previous edition approved in 2005 as C1292 00 (2005).DOI: 10.1520/C1292-10.2For referenced ASTM standards, visit the ASTM website, www
15、.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.3.1.4
16、 shear strength (F/L2)maximum shear stress that amaterial is capable of sustaining. Shear strength is calculatedfrom breaking force in shear and shear area.4. Summary of Test Method4.1 This test method addresses two methods to determinethe shear strength of CFCCs: (1) the compression test methodto d
17、etermine interlaminar shear strength of a double-notchedtest specimen,3and (2) the Iosipescu test method to determinethe shear strength in any one of the material planes oflaminated CFCCs.44.1.1 Shear Test by Compression Loading of Double-Notched Test SpecimensThe interlaminar shear strength ofCFCCs
18、, as determined by this method is measured by loadingin compression a double-notched test specimen of uniformwidth. Failure of the test specimen occurs by shear betweentwo centrally located notches machined halfway through thethickness and spaced a fixed distance apart on opposing faces.Schematics o
19、f the test setup and the test specimen are shown inFig. 1 and Fig. 2.4.1.2 Shear Test By the Iosipescu MethodThe shearstrength of one of the different material shear planes oflaminated CFCCs may be determined by loading a testspecimen in the form of a rectangular flat strip with symmetriccentrally l
20、ocated V-notches using a mechanical testing machineand a four-point asymmetric fixture. The loading can beidealized as asymmetric flexure by the shear and bendingdiagrams in Fig. 3. Failure of the test specimen occurs by shearbetween the V-notches. Different test specimen configurationsare addressed
21、 for this test method. Schematics of the test setupand test specimen are shown in Fig. 4 and Fig. 5. Thedetermination of shear properties of polymer matrix compos-ites by the Iosipescu method has been presented in Test MethodD5379/D5379M.5. Significance and Use5.1 Continuous fiber-reinforced ceramic
22、 composites arecandidate materials for structural applications requiring highdegrees of wear and corrosion resistance, and damage toler-ance at high temperatures.5.2 Shear tests provide information on the strength anddeformation of materials under shear stresses.5.3 This test method may be used for
23、material development,material comparison, quality assurance, characterization, anddesign data generation.5.4 For quality control purposes, results derived from stan-dardized shear test specimens may be considered indicative ofthe response of the material from which they were taken forgiven primary p
24、rocessing conditions and post-processing heattreatments.6. Interferences6.1 Test environment (vacuum, inert gas, ambient air, etc.)including moisture content (for example, relative humidity)3Whitney, J., M., “Stress Analysis of the Double Notch Shear Specimen,”Proceedings of the American Society for
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