ASTM C1465-08(2013)e1
高温下用恒定应力速度挠曲试验测定高级陶瓷慢裂增长系数的标准试验方法
Standard Test Method for Determination of Slow Crack Growth Parameters of Advanced Ceramics by Constant Stress-Rate Flexural Testing at Elevated Temperatures
ASTM C1465-08(2013)e1 发布历史
ASTM C1465-08(2013)e1由美国材料与试验协会 US-ASTM 发布于 2008。
。
ASTM C1465-08(2013)e1 发布之时，引用了标准
- ASTM C1145 高级陶瓷标准术语
- ASTM C1211 高温下高级陶瓷抗弯强度试验方法
- ASTM C1239 报告先进陶瓷单轴强度数据和威布尔分布参数的标准实施规程
- ASTM C1322 高级陶瓷断裂原因分形与表征的标准实践
- ASTM C1368 用环境温度下恒定应力速率强度测试法测定高级陶瓷慢速裂纹生长参数的标准试验方法
- ASTM D1239 塑料薄膜对化学品提取的抗性的标准试验方法
- ASTM E1150 疲劳相关术语的定义
- ASTM E1823 关于疲劳和断裂测试的标准术语
- ASTM E220 用火花原子发射光谱法分析高锰钢的标准试验方法
- ASTM E230 标准化热电偶用温度电动势(EMF)图表的标准规范
- ASTM E337 用干湿球湿度计测定湿度的标准试验方法(湿球和干球温度的测量)
- ASTM E4 试验机的负荷校准的标准实施规程
- ASTM E6 机械试验方法的有关标准术语
- ASTM E616 ASTM E616-89
- IEEE/ASTM SI 10 美国国家公制标准
ASTM C1465-08(2013)e1的历代版本如下：
- 2019年 ASTM C1465-08(2019) 用高温恒定应力速率弯曲试验测定高级陶瓷缓慢裂纹扩展参数的标准试验方法
- 2008年 ASTM C1465-08(2013)e1 高温下用恒定应力速度挠曲试验测定高级陶瓷慢裂增长系数的标准试验方法
- 2008年 ASTM C1465-08(2013) 高温下用恒定应力速度挠曲试验测定高级陶瓷慢裂增长系数的标准试验方法
- 2008年 ASTM C1465-08 高温下用恒定应力速度挠曲试验测定高级陶瓷的慢裂增长系数的标准试验方法
- 2000年 ASTM C1465-00(2006) 高温下用恒定应力速度挠曲试验测定高级陶瓷的慢裂增长系数的标准试验方法
- 2000年 ASTM C1465-00 高温下用恒定应力速度挠曲试验测定高级陶瓷的慢裂增长系数的标准试验方法
4.1 For many structural ceramic components in service, their use is often limited by lifetimes that are controlled by a process of slow crack growth. This test method provides the empirical parameters for appraising the relative slow crack growth susceptibility of ceramic materials under specified environments at elevated temperatures. This test method is similar to Test Method C1368 with the exception that provisions for testing at elevated temperatures are given. Furthermore, this test method may establish the influences of processing variables and composition on slow crack growth as well as on strength behavior of newly developed or existing materials, thus allowing tailoring and optimizing material processing for further modification. In summary, this test method may be used for material development, quality control, characterization, and limited design data generation purposes.
Note 3—Data generated by this test method do not necessarily correspond to crack velocities that may be encountered in service conditions. The use of data generated by this test method for design purposes may entail considerable extrapolation and loss of accuracy.4.2 In this test method, the flexural stress computation is based on simple beam theory, with the assumptions that the material is isotropic and homogeneous, the moduli of elasticity in tension and compression are identical, and the material is linearly elastic. The average grain size should be no greater than one fiftieth (1/50) of the beam thickness.
4.3 In this test method, the test specimen sizes and test fixtures were chosen in accordance with Test Method C1211, which provides a balance between practical configurations and resulting errors, as discussed in Refs (5, 6). Only the four-point test configuration is used in this test method.
4.4 In this test method, the slow crack growth parameters (n and D) are determined based on the mathematical relationship between flexural strength and applied stress rate, log σf = [1/(n + 1)] log σ˙ + log D, together with the measured experimental data. The basic underlying assumption on the derivation of this relationship is that slow crack growth is governed by an empirical power-law crack velocity, v = A[KI /KIC]n (see Appendix X1).
Note 4—There are various other forms of crack velocity laws which are usually more complex or less convenient mathematically, or both, but may be physically more realistic (7) . The mathematical analysis in this test method does not cover such alternative crack velocity formulations......
- 标准号
- ASTM C1465-08(2013)e1
- 发布
- 2008年
- 发布单位
- 美国材料与试验协会
- 替代标准
- ASTM C1465-08(2019)
- 当前最新
- ASTM C1465-08(2019)
- 引用标准
- ASTM C1145 ASTM C1211 ASTM C1239 ASTM C1322 ASTM C1368 ASTM D1239 ASTM E1150 ASTM E1823 ASTM E220 ASTM E230 ASTM E337 ASTM E4 ASTM E6 ASTM E616 IEEE/ASTM SI 10