Development of a Simple Impact Testing Machine for the Characterization of Ceramic Fiber Reinforced Ceramic Composites

开发用于表征陶瓷纤维增强陶瓷复合材料的简易冲击试验机

• 批准号: 06555193
• 负责人: NISHIDA Toshihiko
• 金额: $ 4.03万
• 依托单位: Kyoto Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research (B)
• 财政年份: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1995
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-06555193/
• 关键词: Ceramic Fiber; Ceramics; Composite; Impact Test; Bending Test; Shear Fracture Strength; Tensile Fracture Strength; Ramped Wave; セラミックス系複合材料; セラミック系複合材料

1.The main purpose of this research project is to characterize the impact fracture behavior of some continuous fiber reinforced ceramic matrix composites (CFRC), and to develop a simple testing apparatus for measurement of impact fracture characteristics of some kinds of CFRC.2.Three point impact bending tests on CFRC were carried out using split-Hopkinson pressure bar method, and smooth transmittted stress waves without high-frequency fluctuation were obtained to evaluate dynamic stress-strain relationships precisely by applying ramped incident waives.3.Acoustic emission from the test specimen during the impact fracture was also successfully detected by applying a high-pass filter device on the data recording system.4.Tensile strength of a carbon fiber reinforced silicon nitride ceramic composite was found almost independent of deformation rate, while shear strength along the orientated fiber direction was significantly increased with increase of deformation rate. On the other hand, the tensile and shear strength of a Tirano fiber bonded ceramic composite markedly increased with increase of deformation rate and decrease of testing temperature.5.By using the basic data above described, an impact testing machine with simple and small scale was made on a trial basis, and the machine was also applied to obtain stress-strain relations during bending fracture of some CFRC.

1.本研究项目的主要目的是表征几种连续纤维增强陶瓷基复合材料(CFRC)的冲击断裂行为，并研制一种简易的测试装置来测试几种CFRC的冲击断裂特性。2.采用Split-Hopkinson压杆方法对CFRC进行了三点冲击弯曲试验。在数据记录系统上应用高通滤波装置成功地检测到了冲击断裂过程中试件的声发射。4.碳纤维增强氮化硅陶瓷复合材料的拉伸强度几乎与变形速率无关，而沿纤维方向的剪切强度随着变形速率的增加而显著增加。而Tirano纤维粘结陶瓷复合材料的拉伸强度和剪切强度随着变形速率的增加和试验温度的降低而显著提高。5.利用上述基本数据，试制了一台简单、小型的冲击试验机，并利用该试验机获得了某碳纤维混凝土弯曲断裂过程中的应力应变关系。

项目成果

F.Sugiyama, K.Ogawa, T.Nishida: "Impact Bending Test on Fiber-reinforced Ceramics Aided by Multichannel High-speed Digital Equipment" J.Mech.Eng.Jpn.(in press). (1996)

F.Sugiyama、K.Okawa、T.Nishida：“多通道高速数字设备辅助的纤维增强陶瓷冲击弯曲试验”J.Mech.Eng.Jpn.（出版中）。

F.Sugiyama, K.Ogawa, N.Nakata, T.Nishida: "Development Study on Testing Machine of a Simple Split-Hopkinson Pressure Bar Method-Application for Ceramic Based Composites" J.Ceram.Soc.Jpn.(in preparation).

F.Sugiyama、K.Okawa、N.Nakata、T.Nishida：“简单分体霍普金森压力棒法试验机的开发研究——陶瓷基复合材料的应用” J.Ceram.Soc.Jpn.（准备中）

小川欽也: "カーボン長繊維強化型窒化ケイ素の衝撃三点曲げ試験" 材料. (発表予定).

Kinya Okawa：“长碳纤维增强氮化硅的冲击三点弯曲试验”材料（待发表）。

小川欽也: "衝撃荷重下におけるカーボン長繊維強化型窒化ケイ素の圧縮強度" 材料. (発表予定).

Kinya Okawa：“长碳纤维增强氮化硅在冲击载荷下的压缩强度”材料（待提交）。

杉山文子: "多チャンネル高速デジタル測定器を援用した繊維強化型セラミックス複合材の衝撃曲げ試験" 日本機械学会誌. (印刷中). (1996)

Fumiko Sugiyama：“使用多通道高速数字测量仪进行纤维增强陶瓷复合材料的冲击弯曲试验”，日本机械工程师学会杂志（1996 年出版）。