基于电学特性库尔勒香梨冲击损伤模型构建

目的 为了有效量化库尔勒香梨因冲击载荷造成的损伤，实现库尔勒香梨冲击损伤量化评价。方法 以不同成熟度库尔勒香梨为实验材料，探究不同成熟度下冲击高度与香梨损伤程度的关系，构建冲击高度与香梨损伤程度模型，依据电学特性检测系统构建不同测试频率下电学参数并联等效电容（Cp）与冲击损伤程度的量化模型。结果 在同一冲击高度下，香梨损伤程度与成熟度成正比关系。当成熟度为H1—H5，冲击高度为30 cm，与瓦楞纸板进行冲击时，香梨表面未发现损伤。当冲击高度达到150 cm时，不同成熟度香梨表皮均已破损，不同成熟度香梨冲击高度与损伤程度量化模型决定系数R2为0.984 9～0.9985，可有效量化评价不同成熟度香梨冲击高度与损伤程度的关系。在同一测试频率下，Cp值随着香梨损伤程度的增加而增大。随着测试频率的升高，电学参数Cp值逐渐减小，5种测试频率、不同成熟度下的量化模型决定系数R2的平均值由高到低为1 kHz、1 MHz、10 kHz、100 kHz、100 Hz。结论 在测试频率1 kHz下，所构建的电学参数Cp与冲击损伤面积的量化模型检测效果相对最优，能够有效量化评价香梨的损伤程度。该模型的构建为...

Construction of Impact Damage Model of Korla Fragrant Pear Based on Electrical Characteristics

This paper aims to effectively quantify the damage to Korla fragrant pear caused by impact load and realize the quantitative evaluation of impact damage to Korla fragrant pears. In this paper, Korla fragrant pears of different maturity are used as test materials. Exploring the relationship between impact height and damage degree of Korla fragrant pear at different maturity. The model of impact height and damage degree of fragrant pear was established. According to the electrical characteristic detection system, a quantitative model of the electrical parameter Cp (parallel equivalent capacitance) and the impact damage degree under different test frequencies was constructed. Under the same impact height, the damage degree of the Korla fragrant pear is proportional to maturity. When the maturity was H1-H5, no damage was found on the surface of the Korla fragrant pear after impact with corrugated cardboard from a height of 30 cm. When the impact height was 150 cm, the epidermis was damaged by fragrant pears for all maturities. The determination coefficient R2 value of the quantitative model of impact height and damage degree of fragrant pear with different maturity ranges from 0.984 9 to 0.998 5, which can effectively quantitatively evaluate the relationship between impact height and damage degree of pear with different maturity. At the same test frequency, Cp increased with an increase in the damage degree of Korla fragrant pears. As the test frequency increases, the value of the electrical parameter Cp decreases. The quantitative model average R2 value of the quantitative model under different maturities for the five test frequencies was ranked from high to low as 1 kHz, 1 MHz, 10 kHz, 100 kHz, and 100 Hz. Under the test frequency of 1 kHz, the constructed quantitative model of the electrical parameters Cp and impact damage area has the best detection effect, which can effectively quantitatively evaluate the damage degree of fragrant pears. The construction of this model provides a reference theoretical basis for identifying the impact damage of fragrant pears.