【摘要】 对菠萝果皮穿刺力学特性进行研究，旨在为果实品质评价提供参考，为菠萝采收、加工设备优化改进提供参考，为减轻菠萝果损伤提供理论依据。以巴厘菠萝果皮为研究对象，根据菠萝生长规律将果皮划分为上、中、下3个部位，基于WSW-50E微机控制电子万能试验机，选取2、5、10、20、50 mm/min等5个加载速度对菠萝不同部位进行穿刺力学特性试验，分析不同加载速度、不同穿刺部位和不同穿刺压头截面对果皮穿刺强度的影响。试验结果表明：果皮中部穿刺强度最低，下部穿刺强度最高；压头截面与不同穿刺部位对果皮穿刺强度均呈现负相关极显著(p<0.01),不同穿刺部位对果皮穿刺强度均呈现正相关极显著(p<0.01),压头截面与穿刺部位对穿刺强度影响极显著(p<0.01)。由此得出结论：果皮穿刺强度与压头截面、穿刺部位呈极显著相关关系，加载速度与穿刺强度呈不相关关系。更多还原

【Abstract】 The mechanical properties of pineapple peel puncture were studied in order to provide reference for fruit quality evaluation, optimization and improvement of pineapple harvesting and processing equipment, and theoretical basis for reducing pineapple fruit damage. Taking “Bali” pineapple peel as the research object, the peel was divided into upper, middle and lower parts according to the growth law of pineapple. Five different loading speeds were used to test the puncture mechanical properties of different parts of pineapple, and the effects of different loading speeds, different puncturing parts and different puncture pressure head sections on the puncture strength of the peel were analyzed. The results showed that the puncture intensity in the middle of the peel was the lowest, and the puncture intensity in the lower part was the strongest. The indenter section and different puncture sites had a negative correlation with the peel puncture intensity(p<0.01); the different puncture sites had a positive correlation with the peel puncture strength(p<0.01). The effect of puncture intensity was significant(p<0.01). From this, it was concluded that the peel puncture strength had a very significant correlation with the indenter section and the puncture site, and the loading speed had no correlation with the puncture strength.更多还原