采用两种形状(纺锤形、矩形)的拉伸试样对热压单向M40JB-Cf/SiC和T800-Cf/SiC复合材料进行了高温拉伸强度测试,得到了C f/SiC复合材料的拉伸强度,并对纺锤形试样断裂应变的表达式进行修正,得出了复合材料的弹性模量.M40JB-Cf/SiC复合材料1300 C的拉伸强度及模量分别为374 MPa和134 GPa,1450 C的拉伸强度及模量为338 MPa和116 GPa,T800-Cf/SiC复合材料1300 C拉伸强度和模量为392 MPa和115 GPa.测试结果与试样的断裂方式密切相关,在有效部位断裂的测试结果大于在非有效区断裂的测试结果.M40JB-C f/SiC复合材料的拉伸断裂应力-应变曲线表现出塑性变形的非线弹性破坏特征,而T800-C f/SiC主要表现为线弹性特征.
参考文献
| [1] | Karin E Handrick. Manufacture and application of complex,high-temperature C/SiC composites via the LPI-process[A].IAF-97-I. 4.03. 48th International Aeronautical Congress[C].Turin, Italy, 1997. |
| [2] | Pierre Lamicq. Main feature of thermostructural composites for space, aeronautic and industrial applications[J]. Adv Composite Mater, 1999, 8(1):47-53. |
| [3] | Takahito Araki, Nobuyuki Suzumura, Shaju Masaki, et al. Manufacturing of ceramic matrix composite rotor for advanced gas-generator[J]. Ceram Eng Sci Proc, 1998, 19(4):241-248. |
| [4] | Wisnom M R. Size effects in the testing of fiber-composite materials[J]. Composites Sci Tech, 1999, 59(13):1937-1957. |
| [5] | 赵稼祥.日本东丽公司的碳纤维[J].先进制造与材料应用技术,1996,6:27-31. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%