Health monitoring single lap CNT-epoxy joints of CFRP by using voltage change measurement

• Main Authors: Yu-Hao Huang, 黃昱豪
• Other Authors: Chow-Shing Shin
• Format: Others
• Language: zh-TW
• Published: 2019
• Online Access: http://ndltd.ncl.edu.tw/handle/3zajq9

碩士 === 國立臺灣大學 === 機械工程學研究所 === 107 === This study deals with health monitoring single lap CNT-epoxy joints of CFRP by using voltage change measurement. By adding CNT into the adhesive and the use of gold plated sip sockets, localized voltage change measurement can be achieved. This research also investigates the influence of air bubble and soldering technic to the electrical response. After conducting the voltage change measurement during tensile test, cyclic loading tensile test, and fatigue test, we identify a parameter called critical damage ratio(Kcr). Through conducting the fatigue-after-cyclic loading tensile test, the ability of Kcr which utilized as a sensor of critical damage for lap joints has been proved. Last but not least, the correlation of the localized voltage response and the fracture surface images is evaluated.