Dielectric materials are widely used in electronics,chemicals,energy and other fields,and their properties and states are very important for the stability of products.Microwave technology is very suitable for non-destructive testing of dielectric materials,with its safety,non-contact,and high-precision characteristics.This article reviews the research progress of microwave non-destructive testing of dielectric materials in recent years.Firstly,the principle of microwave non-destructive testing of dielectric materials is introduced.Secondly,the non-destructive testing of several typical dielectric materials using microwave technology is discussed.The applications of microwave non-destructive testing in dielectric materials are summarized.Finally,the development prospects of microwave non-destructive testing technology for dielectric materials are prospected.
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