Titlebook: New Procedures in Nondestructive Testing; Proceedings of the G P. H?ller Conference proceedings 1983 Springer-Verlag Berlin Heidelberg 1983

Urologist

Principles and Practical Applications of Controlled Signalson. By adjusting the spectral distribution and the centre frequency of pulses to the test problem and to the acoustical properties of the workpiece more reliable results can be obtained in many cases. Furthermore, the test procedure and the interpretation of results are simplified. Some applications

inferno

Ultrasonic Plate Testing with a Freely Programmable Electronic Systemax. 300 C plate temperature, continuous thickness measurement for controlling signal expectation gates, digital travelling time and amplitude measurement (logarithmic within 80 dB dynamic range), relating of flaw-echo amplitude to backwall-ocho amplitude, flaw evaluation corresponding to test specif

壓碎

Microprocessor Controlled UT-Equipmentipment from the use of more complex procedures..Menu-like control, text, and numbers offer easy and clear-cut operation. Digital feed back loops increase the stability and testing routines enhance the reliability..New applications are created in data acquisition, documentation, and by support of sem

colony

顛簸地移動(dòng)

dissent

Classification and Reconstruction of Defects by Combined Acoustical Holography and Line-Saftacquisition system is presented which is based upon data collection within a synthesized aperture. US-Holography with digital reconstruction algorithm is used to describe the extension of flaws parallel to the surface (C-scan) whereas the Line Synthetic Aperture Focusing Technique (LSAFT) is applied

SLING

Pulse-Synthesis and Pulse-Adaptation in Ultrasonic Imaging for NDTin acoustic imaging systems. Optimum short pulses can be created in the frequency domain as well as in the time domain by matching synthesized input signals to the imaging system. Furthermore, adaptation of synthetic signals to special reflectors is possible.

overbearing

舊式步槍

Visualization of Ultrasound by Optical Holographytation is improved especially for defects near the surface. Since the resolution is independent of the sound wavelength, even defects being smaller than one wavelength are detectible..As a consequence of this rather low test frequencies can be applied, simplifying the testing of coarse grained thin

潰爛