Sökning: "Nondestructive testing"
Visar resultat 21 - 25 av 34 avhandlingar innehållade orden Nondestructive testing.
21. Numerical simulation of ultrasonic nondestructive testing of two-dimensional multi-layered structures
Sammanfattning : .... LÄS MER
22. Optimal Detectors for Transient Signal Families and Nonlinear Sensors : Derivations and Applications
Sammanfattning : This thesis is concerned with detection of transient signal families and detectors in nonlinear static sensor systems. The detection problems are treated within the framework of likelihood ratio based binary hypothesis testing. LÄS MER
23. Laser spectroscopic analysis of atmospheric gases in scattering media
Sammanfattning : Laser spectroscopic techniques for gas analysis under various influences of light scattering are explored in a wide spectral range from the ultraviolet to the infrared. The techniques rely on spectrally narrow-band light sources that are used in differential optical absorption measurements. LÄS MER
24. Non-contact surface wave measurements on pavements
Sammanfattning : In this thesis, nondestructive surface wave measurements are presented for characterization of dynamic modulus and layer thickness on different pavements and cement concrete slabs. Air-coupled microphones enable rapid data acquisition without physical contact with the pavement surface. LÄS MER
25. Experimental Validation of a Phased Array Ultrasonic Testing Probe Model and Sound Field Optimization
Sammanfattning : New manufacturing technologies are developed to facilitate flexible product designs and production processes. However, the quality of the final products should not be compromised, especially for safety prioritized industries, e.g. aerospace industry. LÄS MER