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首页> 美国政府科技报告 >Comparison of the Strengths of Metal-Metal and Metal-CFRP (Carbon Fibre Reinforced Plastics) Adhesive Bonded Joints at Various Test Temperatures
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Comparison of the Strengths of Metal-Metal and Metal-CFRP (Carbon Fibre Reinforced Plastics) Adhesive Bonded Joints at Various Test Temperatures

机译：不同试验温度下金属 - 金属 - 金属 - 碳纤维增强塑料（碳纤维增强塑料）粘接剂接头强度的比较

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Tests on double lap joints bonded with a range of adhesives showed that differential thermal contraction of the adherends in metal-CFRP joints can greatly reduce strengths relative to metal-metal joints, particularly at low temperatures. However, the effect varied widely between adhesives, and relatively high strengths were obtained for an adhesive with a high strain to failure. Strengths of metal-CFRP joints were much higher when titanium was substituted for aluminum, as expected from the lower expansion coefficient of titanium. However, attempts to reduce thermal stress by lowering the stress-free temperature with the use of reduced cure temperatures were unsuccessful, possibly because the adhesives did not develop their full toughness. The low transverse tensile strength of CFRP also contributed in some cases to the reduced strength of metal-CFRP joints, relative to metal-metal joints.

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