The theory of defect penetrant was detailed analyzed,the effects of the penetrant materials,defect types,air pressure and defect position on the inspection sensitivity were discussed.

• 对缺陷渗透理论进行了详细的分析,讨论了渗透材料、缺陷类型、大气压强及缺陷的空间位置等因素对渗透检测灵敏度的影响。