Application of Non-Destructive Testing for Condition Analysis, Repair of Damages and Integrity Assessment of Vital Steel Structures

2021 ◽  
Vol 57 (10) ◽  
pp. 918-931
Author(s):  
Miodrag Arsić ◽  
Dušan Arsić ◽  
Željko Flajs ◽  
Aleksandar Grbović ◽  
Aleksandar Todić
Keyword(s):  
Steel Structures ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Integrity Assessment ◽  
Non Destructive

CONSTRUCTIONAL FIRE PROTECTION OF STEEL SIN BEAMS OF BUILDINGS AND STRUCTURES

2017 ◽  
Vol 7 (1) ◽  
pp. 9-16
Author(s):  
Nikolay A. ILYIN ◽  
Denis A. PANFILOV ◽  
Evgeny V. ILDIYAROV ◽  
Alexey O. LUKIN
Keyword(s):  
Cost Saving ◽  
Fire Protection ◽  
Steel Structures ◽  
Original Method ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Lower Beam ◽  
Corrugated Wall ◽  
Non Destructive ◽  
Design Construction

The paper proposes an original method of determining of indicators of building fi re safety in regards to guaranteed resistance time for steel fi re-retardant SIN beams in conditions of standard fi re testing, evaluation of fi re-resistance design limits for steel fi re-retardant SIN beams during buildings design, construction and management, and cost saving during testing of steel structures for fi re-resistance. Operational benefi ts are obtained by non-destructive testing. Fire-resistance of fi re-retardant elements of SIN beam (corrugated wall, upper and lower beam fl anges) is evaluated by revealing of the most strong element of welded I beam.

Detection of Dangerous Defects and Damages of Steel Building Structures by Active Thermography

2021 ◽  
Vol 1038 ◽  
pp. 417-423
Author(s):  
Sergiy Kolesnichenko ◽  
Andrii Popadenko ◽  
Yurii Selyutin
Keyword(s):  
Steel Structures ◽  
Qualitative Assessment ◽  
Building Structures ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Theoretical Substantiation ◽  
Active Thermography ◽  
Steel Building ◽  
Non Destructive

The article presents the results of a study of use thermographic non-destructive testing to search for cracks in steel structures. Theoretical substantiation of thermal non-destructive method of control for detection of cracks in steel structures. A practical study proving the possibility of using thermal non-destructive testing to detect cracks in steel structures is described. The problems that arise during the thermal non-destructive method of control and possible ways to solve them. The authors conclude that the method of thermographic control can be used during the inspection of steel structures for qualitative assessment of cracks.

PASSIVE METHOD OF THERMAL NON-DESTRUCTIVE TESTING OF STEEL ELEMENTS AND PRODUCTS ON THE BASIS OF THE MECHANISM OF DEFORMATION HEAT GENERATION

2019 ◽  
pp. 50-57
Author(s):  
Е. А. Moyseychik
Keyword(s):  
Heat Generation ◽  
Steel Structures ◽  
Temperature Fields ◽  
Thermal Method ◽  
Heat Sources ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Passive Method ◽  
Internal Deformation ◽  
Non Destructive

The features of heat generation and the basic capabilities of the passive method of thermal non-destructive testing of steel elements and products are considered. The mechanism of heat generation in steel is presented and the structure of the formula for changing its temperature during deformation is substantiated. It is shown that the diagnosis of steel elements in the passive mode should be carried out with the operation of heat sources in them, resulting from the force effects on the structure. The features of determining the stress in steel elements by the passive thermal method are considered. It is shown that the passive method of thermal non-destructive testing of steel structures loaded with forces continuously changing in time, under the action of which internal deformation sources of heat and surface temperature fields operate in potentially dangerous areas of the elements, allows the kinetics and anomalies of temperature fields to exercise health -plastic stages of steel, with the birth and development of destruction.

scholarly journals Experimental research of thermographic control for detection of cracks in steel structures

2020 ◽  
pp. 80-90
Author(s):  
S. Kolesnichenko ◽  
A. Popadenko
Keyword(s):  
Experimental Research ◽  
Thermal Field ◽  
Control Method ◽  
Steel Structures ◽  
Thermal Control ◽  
Qualitative Assessment ◽  
Recording Device ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Non Destructive

The paper presents the results of experimental research of the possibility of using thermographic non-destructive testing for the search of cracks in steel structures. The basis of non-destructive thermal control is the registration of changes in the thermal field that occurs in the case of disturbance of the thermodynamic equilibrium of object with an environment that appears on the surface, and parameters of which allows to obtain the necessary information. The thermal control method is based on the interaction of the thermal field of object with thermodynamically sensitive elements (thermocouple, photodetector, liquid crystal element, bolometer) that convert the field parameters (intensity, temperature gradient, contrast, variability) into the electrical signal of the recording device. An experiment is described which proves the possibility of using thermal nondestructive testing for the detection of cracks in steel structures. As measuring instruments for the experiment were used thermal imagers with different resolution of the matrix of the IR image (thermal image), infrared thermohygrometer, luxmeter. The problems encountered during the use of thermal non-destructive testing and possible solutions are indicated. The authors conclude that the thermographic control method can be used in the examination of steel structures for the qualitative assessment of cracks.

The structural integrity of flash-butt welded premium rail steel – Evaluation of strength, microstructure and defects

2020 ◽  
pp. 095440972097313
Author(s):  
Anthony Micheletto ◽  
John Cookson ◽  
Yong Pang ◽  
Bernard Chen ◽  
Peter Mutton
Keyword(s):  
Structural Integrity ◽  
Rail Steel ◽  
Experimental Testing ◽  
Non Destructive Testing ◽  
Testing Methods ◽  
Destructive Testing ◽  
Integrity Assessment ◽  
Catastrophic Failures ◽  
Non Destructive ◽  
Microstructural Examination

Experimental testing of flash-butt welded premium rail steel samples was undertaken to quantify the variation in strength through the cross-section of the weld, with results showing a general correlation between the width of the heat-affected-zone and the ultimate tensile strength. Microstructural examination and fractography revealed the presence of defects in some samples. Large defects can be identified by non-destructive testing methods as part of routine structural integrity assessment; however, small defects may escape detection but could propagate under cyclic loading in service leading to catastrophic failures. This work demonstrates the requirement for stringent control of heat input to prevent the development of defects in premium rail steels with high alloying content.

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