Topics covered include the interaction of radiation with atoms: resonance; absorption, stimulated and spontaneous emission; methods of resonance, dressed atom formalism, masers and lasers, cavity quantum electrodynamics; structure of simple atoms, behavior in very strong fields; fundamental tests: time reversal, parity violations, Bell's inequalities; and experimental methods.
The interaction of radiation with atoms: resonance; absorption, stimulated and spontaneous emission; methods of resonance, dressed atom formalism, masers and lasers, cavity quantum electrodynamics; structure of simple atoms, behavior in very strong fields; fundamental tests: time reversal, parity violations, Bell's inequalities; and experimental methods.
The research has sought to apply low-frequency vibration, ultrasonic, acoustic absorption, thermosonic and especially, acoustic emission methods to the characterization and integrity assessment as well as strain rate and nano-phasing behaviors of composite marine structures.
Positron emission methods rely on detecting the pairs of back-to-back gamma rays produced when a positron (emitted in radioactive decay) annihilates with an electron, and are variants of positron emission tomography (PET) which is widely used in medicine for determining the distribution in 3D of a labelled fluid.
Such monitoring based on geophysical parameters using seismic geotomography, ultrasonic and acoustic emission methods have carried out during construction of the high concrete dam Inguri hydro power station (HPS) [9], large underground opening [10, 11, 12, 13, 14] and tunnels [15, 16, 4].
The acoustic emission method allowed to investigate the behaviour of composite structures in the phase prior to their collapse.
The following measuring devices and methods were applied: electrical strain gauges for strain measurements, a laser sensor to measure the displacements, and the Acoustic Emission method.
At last, a finite element method (FEM) was employed to verify the accuracy of acoustic emission method by the comparison of results between experiment and FEM analysis.
Embodied environmental impact evaluation indicates that the combination use of stabilizer and fly ash is a novel low-CO2 emission method for preparing cleaner earth-based construction.
The acoustic emission method was used in experimental tests for identification on line of the time period during which the stresses reach their maximal values.
In this paper, the fracture process of TBCs subjected to cyclic heating and cooling is monitored using an acoustic emission method.
