Titlebook: Ultrasonic Testing of Materials; Josef Krautkrämer,Herbert Krautkrämer Book 19904th edition Springer-Verlag Berlin Heidelberg 1990 Materia

Nutrient

Piezo-electric Methods of Generation and Reception of Ultrasonic Wavesion except that they are excited in the material concerned by the contact face of a . which oscillates with the desired wave-form and frequency. For detection a . has been assumed which likewise has a contact face and which is capable of measuring the sound pressure of an incident wave. Both devices

剥皮

Fortuitous

蛤肉

The Pulse-Echo Method; Design and Performance of a Pulse-Echo Flaw Detector propagates into a specimen with the ultrasonic velocity corresponding to the material concerned. Part of the ultrasound will be reflected if it strikes an obstacle in the form of an inhomogeneity and, if this is not too large, the remainder will travel further to a boundary of the specimen and will

Goblet-Cells

BUDGE

体贴

缩减了

Headstrong

松软