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摘要
The application of the fusion joining method for composite structures is associated with a nonuniform heat distribution in the heating element, because of which it is difficult to maintain a high bonding quality when upscaling this process. To address this issue, two layers of multiwalled carbon nanotube (MWCNT) sheets were interleaved in a carbon fabric heating element to alleviate the low-temperature issue at the edges of the heating element. The temperature at the edges of the heating element increased from 70-80 & DEG;C to 160-180 & DEG;C. Six different sizes of the heating element were selected to study the effect of the element size on the heat distribution. Lap shear tests were conducted, and the results showed that the lap shear strengths of the carbon fabric heating elements interleaved with MWCNT sheets improved by 49.9%, 71.5%, 84.1%, 110.5%, 118.2%, and 153.6%, respectively. Therefore, the interleaving of the heating element with MWCNT sheets can help improve the bonding quality in the resistance welding of thermoplastic composites.
