ASTM C1275-16
在環境溫度下使用實心矩形橫截面試件測定連續纖維增強型高級陶瓷單調拉伸性能的標準試驗方法

Standard Test Method for Monotonic Tensile Behavior of Continuous Fiber-Reinforced Advanced Ceramics with Solid Rectangular Cross-Section Test Specimens at Ambient Temperature

被代替

標準號

ASTM C1275-16

發布

2016年

發布單位

美國材料與試驗協會

替代標準

ASTM C1275-18

當前最新

ASTM C1275-18

 

 

引用標準

ASTM C1145 ASTM C1239 ASTM D3039/D3039M ASTM D3379 ASTM D3878 ASTM E1012 ASTM E177 ASTM E337 ASTM E4 ASTM E6 ASTM E691 ASTM E83 IEEE/ASTM SI 10

適用范圍

4.1 This test method may be used for material development, material comparison, quality assurance, characterization, and design data generation.

4.2 Continuous fiber-reinforced ceramic matrix composites generally characterized by fine grain sized (<50 μm) matrices and ceramic fiber reinforcements are candidate materials for structural applications requiring high degrees of wear and corrosion resistance, and high-temperature inherent damage tolerance (that is, toughness). In addition, continuous fiber-reinforced glass (amorphous) matrix composites are candidate materials for similar but possibly less-demanding applications. Although flexural test methods are commonly used to evaluate strengths of monolithic advanced ceramics, the non-uniform stress distribution of the flexure specimen in addition to dissimilar mechanical behavior in tension and compression for CFCCs lead to ambiguity of interpretation of strength results obtained from flexure tests for CFCCs. Uniaxial-loaded tensile strength tests provide information on mechanical behavior and strength for a uniformly-stressed material.

4.3 Unlike monolithic advanced ceramics which fracture catastrophically from a single dominant flaw, CFCCs generally experience “graceful” fracture from a cumulative damage process. Therefore, the volume of material subjected to a uniform tensile stress for a single uniaxially-loaded tensile test may not be as significant a factor in determining the ultimate strengths of CFCCs. However, the need to test a statistically significant number of tensile test specimens is not obviated. Therefore, because of the probabilistic nature of the strength distributions of the brittle matrices of CFCCs, a sufficient number of test specimens at each testing condition is required for statistical analysis and design. Studies to determine the exact influence of test specimen volume on strength distributions for CFCCs have not been completed. It should be noted that tensile strengths obtained using different recommended tensile specimens with different volumes of material in the gage sections may be different due to these volume differences.

4.4 Tensile tests provide information on the strength and deformation of materials under uniaxial tensile stresses. Uniform stress states are required to effectively evaluate any nonlinear stress-strain behavior which may develop as the result of cumulative damage processes (for example, matrix cracking, matrix/fiber debonding, fiber fracture, delamination, etc.) which may be influenced by testing mode, testing rate, processing or alloying effects, or environmental influences. Some of these effects may be consequences of stress corrosion or subcritical (slow) crack growth that can be minimized by testing at sufficiently rapid rates as outlined in this test method.

4.5 The results of tensile tests of test specimens fabricated to standardized dimensions from a particular material or selected portions of a part, or both, may not totally represent the strength and deformation properties of the entire, full-size end product or its in-service behavior in different environments.

4.6 For quality control purposes, results derived from standardized tensile test specimens may be considered indicative of the response of the material from which they were taken for, given primary processing conditions and ......

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常見的拉伸試驗結果：最大載荷最大載荷下的撓度最大載荷做功剛度斷裂載荷斷裂時的形變斷裂做功弦斜率應力應變楊氏模量試驗儀器：萬能試驗機，高速試驗機等圖一 ?金屬鋁拉伸強度部分測試標準：GB/T 6397-1986《金屬拉伸試驗試樣》ASTM?D3039-76用于測定高模量纖維增強聚合物復合材料面內拉伸性能ASTM?D638用于測定試件的拉伸強度和拉伸模量2、壓縮試驗?壓縮試驗是一種常用于測定材料的壓縮負載或抗壓性的試驗方法...

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常見的拉伸試驗結果：最大載荷最大載荷下的撓度最大載荷做功剛度斷裂載荷斷裂時的形變斷裂做功弦斜率應力應變楊氏模量試驗儀器：萬能試驗機，高速試驗機等圖一 ?金屬鋁拉伸強度部分測試標準：GB/T 6397-1986《金屬拉伸試驗試樣》ASTM?D3039-76用于測定高模量纖維增強聚合物復合材料面內拉伸性能ASTM?D638用于測定試件的拉伸強度和拉伸模量2、壓縮試驗?壓縮試驗是一種常用于測定材料的壓縮負載或抗壓性的試驗方法...