Monitoring of active destructive processes as a diagnostic tool for the structure technical state evaluation

Abstract

Abstract. In this paper, a global monitoring system based on the measurement of acoustic emission (AE) due to active deterioration processes is presented. This allows us to examine the entire volume of an element and to locate and identify the type and the dynamics of the deterioration processes under service conditions. The resulting data are used to determine and locate the damage processes that are dangerous in construction made of pre-stress concrete, steel and fiber glass and to assess the general condition of the structure.

Dragon bridge - the world largest dragon-shaped (ARCH) steel bridge as element of smart city

“…During the study engineers found that cracks are "normal" and accepted ranges of code, mainly there are cracks caused by concrete shrinkage [6,7]. But advocated monitor and regularly check the development of cracks in places prone, especially in connecting elements between the steel girder and concrete, in the middle of the spans, in concrete arch to be possible to prevent unexpected symptom [7,8].…”

Application of stress based NDT methods for concrete repair bond quality control

“…Therefore, elaboration of the reliable nondestructive method for an adhesion mapping could provide a quite advantageous alternative. Recently, a growing interest has been noted in the application of nondestructive techniques (NDT) for evaluation of concrete structures [6][7][8]. A majority of NDT methods mentioned in EN 1504-10 and ACI Concrete Repair Manual for assessment of concrete structures are based on propagation of stress waves.…”

Scanning electron microscopy in the tests of fibre-cement boards

“…It is worth highlighting that so far, the majority of research on fibrecement materials has been limited to determining standard physical and mechanical parameters [5,6]. It is also possible to see the results of research conducted with the use of non-destructive methods, which as a diagnostic method is widely used and simultaneously developed worldwide with reference to steel and concrete constructions as well as composite materials [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23].…”