Method for performing ultrasonic detection on porosity of carbon fiber enhanced resin-based composite material laminate

• Main Authors: MENG JIANGYAN, WANG YUNYING, WANG YUHONG
• Format: Patent
• Language: Chinese; English
• Published: 30.03.2018
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention discloses a method for performing ultrasonic detection on the porosity of a carbon fiber enhanced resin-based composite material laminate. The detection method is characterized by comprising the following steps: (1) detecting by an ultrasonic C scanning method and recording ultrasonic attenuation; (2) detecting the porosity of the carbon fiber enhanced resin-based composite materiallaminate subjected to ultrasonic C scanning detection separately by microscopic metallographic test, field emission electron microscope test and high-precision CT detection methods, obtaining the relation between ultrasonic C scanning attenuation coefficient and the porosity and calculating the porosity; and (3) reaching the precision degree of detection to be 0.01 percent. 本发明公开了种碳纤维增强树脂基复合材料层板孔隙率的超声检测方法，其特征是检测方法及步骤为：（1）采用超声C扫描法检测，记录超声衰减；（2）采用显微金相测试、场发射电子显微镜测试和高精度CT检测等方法，分别对超声C扫描检测的碳纤维增强树脂基复合材料层板进行孔隙率检测，得到超声C扫描衰减系数与孔隙率的关系，计算出孔隙率；（3）检测的精确度为0.01%。