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In this article, the effect of adhesive type, substrate properties, and structural dimensions on the mechanical properties of basalt fiber reinforced polymer (BFRP)-aluminum alloy (AA5052) and BFRP-BFRP single lap adhesive joints is investigated. Using the response surface methodology (RSM), a predictive model is es-tablished to evaluate the impact of three process parameters (aluminum substrate thickness, overlap length, and the angle between the loading direction and the primary direction of the basalt fibers) on the mechanical performance of the joints. The results indicate that the strength and stiffness of the adhesive joints are influenced by the yield strength and stiffness of the bonded substrates. BFRP-BFRP adhesive joints exhibit higher peak load, whereas BFRP-AA5052 adhesive joints demonstrate greater overall stiffness. The use of brittle structural adhesives can sig-nificantly enhance the strength and fracture energy absorption of the adhesive joints, reaching up to 57.4% and 1 128.5%, respectively. The shear strength Y is introduced as an evaluation metric for assessing the adhesive strength utilization rate. A strength prediction model for Y is established based on RSM, resulting in a regression equation with good significance, and the optimal range for the process parameters is predicted. The analysis of the coupling effect of the process parameters based on the strength prediction model reveals a negative correlation be-tween fiber direction and joint strength, while overlap length and aluminum substrate thickness show a positive cor-relation with joint strength. Considering the joint strength, adhesive cost, and lightweight effect, it is recommended that the loading direction aligns with the primary direction of the fibers, with the overlap length controlled within the range of 20 mm to 25 mm, and the aluminum substrate thickness within the range of 2 mm to 2.5 mm. This study provides theoretical and data support for the application of BFRP-AA5052 adhesive structures in transportation equipment.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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