The objective of this study is to understand the influence of temperature and moisture on the lap shear strength (LSS) of carbon fibre/polyphenylene sulfide (CF/PPS) resistance-welded joints. The welded joints are conditioned at various levels of temperature and humidity and tested at temperatures ranging from 21 °C to 150 °C. Temperature is shown to have an effect on the LSS with a reduction of 26% at 82 °C and 61% at 150 °C (around 60 °C above the PPS T_g), relative to room temperature. Moisture is shown to have little to no impact on the LSS, due to the semi-crystalline nature of PPS and its good resistance to water absorption. Observation of the joints’ fracture surfaces shows a degradation of the fibre/matrix interface under severe environmental conditions and a failure mode involving both fibre/matrix and heating element/matrix debonding.

这项研究的目的是了解温度和湿度对碳纤维/聚苯硫醚（CF / PPS）电阻焊接接头的搭接剪切强度（LSS）的影响。焊接接头在各种温度和湿度条件下进行调节，并在21°C至150°C的温度范围内进行测试。温度对LSS有影响，温度在82°C时降低26％，在150°C时降低61％（比PPS T _g高约60°C）），相对于室温。由于PPS的半结晶性质和良好的耐水吸收性，水分对LSS几乎没有影响。对接头断裂表面的观察表明，在严酷的环境条件下，纤维/基体界面的退化以及涉及纤维/基体和加热元件/基体脱粘的失效模式。