APPLICATION OF INFRARED SURFACE ELECTROMAGNETIC-WAVES ON METALS IN NONDESTRUCTIVE SURFACE TESTING

被引：0
作者：
PEDERSEN, JH
KELLER, O
机构：
[1] Univ of Aalborg, Denmark
来源：
NDT INTERNATIONAL | 1988年 / 21卷 / 06期
关键词：
Infrared Radiation - Metals And Alloys - Nondestructive Examination - Surfaces - Testing;
D O I：
10.1016/0308-9126(88)90282-9
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The elementary theory of surface electromagnetic waves (SEW), based on a local relation between the induced current density and electric field, is discussed. Based on this theory, typical values of propagation lengths and penetration depths are calculated in the infra-red and visible regions. Experiments using a double-prism configuration have been performed to demonstrate the relative coupling efficiency as a function of prism-gap height and angle of incidence, respectively, for infra-red SEWs. Approximate calculations of propagation lengths for infra-red SEWs on rough surfaces are presented.
引用
收藏
页码：403 / 406
页数：4
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