1 北京理工大学珠海学院 2020 届本科生毕业设计 基于声学特性的鸡蛋品质无损检测试验研究基于声学特性的鸡蛋品质无损检测试验研究摘 要鸡蛋作为大众喜爱的食品，产量逐年增加。而鸡蛋自产出起，其品质受到各种因素的影响，如先天不足，运输不当，储存变质等，造成了部分的人力物力的浪费。所以对鸡蛋品质的研究是非常重要且有必要的，而当前对鸡蛋品质研究的方法有数种，涵盖光学，力学，电磁学，但其中还未有声学方向的研究。正是基于这点，本试验对鸡蛋的声学特性进行测量，使用 CTS-65 型非金属超声波检测仪对两种类型的鸡蛋在常温和加热条件下进行测量其穿透声时。测量收发探头穿透点的距离，从而计算出其透射声速。通过数值逼近模型进行分析判别，得出结论为正常完好的鸡蛋其超声波声速应当在一个合理的区间（2.0km/s-2.5km/s），其他改变鸡蛋内部品质的行为如加热破坏其内部的蛋白质结构会使得这个区间增大。该结论可以为鸡蛋品质的无损检测提供一定的参考，表明了对鸡蛋的无损检测多了一种可行的方向。关键词：鸡蛋品质；无损检测；声学特性；对比分析2 北京理工大学珠海学院 2020 届本科生毕业设计 Nondestructive testing of egg quality based on acoustic characteristicsAbstractAs a popular food, egg production is increasing year by year. Since the egg was produced, its quality has been affected by various factors, such as congenital deficiency, improper transportation, storage deterioration and so on, resulting in a part of waste of human and material resources.Consequently ， the study of egg quality is very important and necessary ， too. At present, there are several methods to study the egg quality, including 3 北京理工大学珠海学院 2020 届本科生毕业设计 optics, mechanics, electromagnetics, but there is no acoustic research. Based on this point, the acoustic characteristics of eggs were measured in this experiment. CTS-65 non-metallic ultrasonic detector was used to measure the penetration sound of two types of eggs under normal temperature and heating conditions. By measuring the distance between...
