scholarly journals DEVELOPMENT OF ACOUSTIC CONTROL METHOD FOR STEEL STRUCTURES CHANGES DETECTION AND EVALUATION

2019 ◽  
pp. 27-30 ◽  
Author(s):  
N. I. Chaban ◽  
I. V. Rybitskyi ◽  
V. D. Myndiuk
Keyword(s):  
Structural Changes ◽  
Control Method ◽  
Steel Structures ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Metal Structures ◽  
Advantages And Disadvantages ◽  
Acoustic Control ◽  
Changes Detection ◽  
Non Destructive

Detection of defects at the stage of their origination, specifically at the stage of structural changes in the metal structures material, is the current issue. The main methods for determining the structural changes in the material of metal structures are considered, their advantages and disadvantages are analyzed, a new method for determining the structural changes using modern methods of non-destructive testing, namely ultrasonic phased arrays is proposed.

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.

scholarly journals Inductive Thermography as Non-Destructive Testing for Railway Rails

2021 ◽  
Vol 11 (3) ◽  
pp. 1003
Author(s):  
Christoph Tuschl ◽  
Beate Oswald-Tranta ◽  
Sven Eck
Keyword(s):  
Eddy Current ◽  
Electrical Discharge Machining ◽  
Rolling Contact ◽  
Heat Diffusion ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Ir Camera ◽  
Advantages And Disadvantages ◽  
Average Crack ◽  
Non Destructive

Inductive thermography is a non-destructive testing method, whereby the specimen is slightly heated with a short heating pulse (0.1–1 s) and the temperature change on the surface is recorded with an infrared (IR) camera. Eddy current is induced by means of high frequency (HF) magnetic field in the surface ‘skin’ of the specimen. Since surface cracks disturb the eddy current distribution and the heat diffusion, they become visible in the IR images. Head checks and squats are specific types of damage in railway rails related to rolling contact fatigue (RCF). Inductive thermography can be excellently used to detect head checks and squats on rails, and the method is also applicable for characterizing individual cracks as well as crack networks. Several rail pieces with head checks, with artificial electrical discharge-machining (EDM)-cuts and with a squat defect were inspected using inductive thermography. Aiming towards rail inspection of the track, 1 m long rail pieces were inspected in two different ways: first via a ‘stop-and-go’ technique, through which their subsequent images are merged together into a panorama image, and secondly via scanning during a continuous movement of the rail. The advantages and disadvantages of both methods are compared and analyzed. Special image processing tools were developed to automatically fully characterize the rail defects (average crack angle, distance between cracks and average crack length) in the recorded IR images. Additionally, finite element simulations were used to investigate the effect of the measurement setup and of the crack parameters, in order to optimize the experiments.

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.

Diagnostics of aviation equipment. Methods and means of non-destructive testing of the technical condition of the aircraft

2017 ◽  
Author(s):  
Мартыненко ◽  
Elena Martynenko
Keyword(s):  
Physical Nature ◽  
Optical Devices ◽  
Civil Aviation ◽  
Measuring Instruments ◽  
Non Destructive Testing ◽  
Testing Methods ◽  
Destructive Testing ◽  
Ray Method ◽  
Advantages And Disadvantages ◽  
Non Destructive

This manual contains information about the appointment and the physical nature of the application existing non-destructive testing methods, their advantages and disadvantages. The manual contains a brief historical information about the development of non-destructive testing methods in manufacturing aircraft devices, the classification and possible causes of occurrence of various defects on which the studied method of non-destructive testing are directed. The first part of the manual, of the main methods that are used to detect the defects in any instrument control. The detailed classification of measuring instruments and optical devices are given. Moreover, the construction and the ways (the principles) of work of complex measuring instruments and optical devices, including endoscopes are given. The current devices and systems for visual inspection of fiber-hidden objects and internal cavities are considered. More detailed consideration in the manual is given to the capillary, magnetic, acoustic, eddy current non-destructive testing methods and techniques of radiographic(X-ray and gamma-ray method). Particular attention is paid to the field of practical application of different methods. A lot of attention is given to modern means of non-destructive testing of domestic and foreign production. The manual contains a significant amount of drawings and diagrams, which allows to increase the visibility and the accessibility of presentation. It is drawn up with the interdisciplinary course program MDK 01.01.03 "Technical maintenance of aircraft and engines" and is intended for students of the above mentioned specialization 25.02.01 branches of secondary vocational education. The manual can also be used by the students of the training courses for engineering and technical personnel of the enterprises of civil aviation.

scholarly journals New Advances in the Inspection of Flare Stacks

2018 ◽  
Author(s):  
Carlos Martín Díaz de Espada ◽  
María Dolores Rubio Cintas
Keyword(s):  
Unmanned Aircraft ◽  
Operating Conditions ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Objective Information ◽  
Advantages And Disadvantages ◽  
Non Destructive

Flare stacks are a key element in the safety of petrochemical and refinery industries; the correct operating conditions thereof must be ensured through a schedule for the periodic reviewing of all parts thereof. Advances in Non-Destructive Testing (NDT) in recent years and the application thereof to this field allow reliable, objective information to be obtained. This article describes and groups together the main applicable NDT techniques, analysing their advantages and disadvantages, updated with the new possibilities offered by unmanned aircraft or drones. 

scholarly journals Research possibility of application of non-destructive testing method based on the Barkhausen effect for the control of heat exchange equipment, exposed to im-pulse pressure

2019 ◽  
Vol 114 ◽  
pp. 06011
Author(s):  
V.V. Potapov ◽  
M.V. Lopatin ◽  
L.I. Lopatina ◽  
L.M. Chebotnyagin
Keyword(s):  
Heat Exchange ◽  
Heat Exchangers ◽  
Control Method ◽  
Non Destructive Testing ◽  
Barkhausen Effect ◽  
Destructive Testing ◽  
Testing Method ◽  
Heat Exchange Equipment ◽  
Reliability Of Operation ◽  
Non Destructive

The article deals with the issues of ensuring the reliability of operation and methods for evaluation of connections (tube attachment points in tube sheets) of heat exchangers used in various industries. It is estimated the applicability of the control method based on the Barkhausen effect to check the place of tube fastening in tube sheets. Installations are considered as heat exchangers in which the connection is derive pipe with tube sheets is obtained by using impulsed pressure sources.

scholarly journals ANALISIS UJI TIDAK MERUSAK PADA SAMBUNGAN LAS LAMBUNG FRAME 103 BAGIAN KAMAR MESIN KAPAL PATROLI 73 DENGAN METODE RADIOGRAPHY TEST

2020 ◽  
Vol 20 (4) ◽  
pp. 146-152
Author(s):  
Sulaiman Sulaiman ◽  
Budi Utomo ◽  
I Putu Agung Ardi Wijana
Keyword(s):  
Plate Thickness ◽  
Test Results ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Advantages And Disadvantages ◽  
Welding Defects ◽  
Almost All ◽  
Non Destructive ◽  
Good Preparation

Non-Destructive Test is a supporting tool that is highly relied upon by the activities of controlling and ensuring the quality of a welding. Radiography test is one of the non-destructive tests that uses gamma rays that can penetrate almost all metals so that it can be used to reveal defects or discrepancies behind metal walls or within the material itself. The purpose of this paper is to know, plan a non-destructive testing activity with radiography test which includes the understanding along with the equipment needed during the testing process, what devices contribute to the testing process, as well as knowing the advantages and disadvantages of the test radiography. The method used in This writing is by experiment with welding connection frame 103 Patrol Ship 73 engine rooms. Radiography Test results found no welding defects on the inside of the welding as deep as a plate thickness, so that otherwise passed the checking received by BKI. Good preparation and consideration are needed before conducting this test.

Modern 2D & 3D X-ray Technologies for Testing and Failure Analysis

2019 ◽  
Author(s):  
Herminso Villaraga-Gómez ◽  
Joshua D. Bell
Keyword(s):  
Failure Analysis ◽  
Non Destructive Testing ◽  
Dimensional Metrology ◽  
Destructive Testing ◽  
X Ray ◽  
Advantages And Disadvantages ◽  
Computed Laminography ◽  
Basic Operating ◽  
2D And 3D ◽  
Non Destructive

Abstract Modern 2D and 3D X-ray technologies are among the most useful non-destructive testing methods that enable the inspection of an object's internal features without cutting or disassembling the sample. This paper discusses the basic operating principle, advantages, and disadvantages of 2D and 3D X-ray based approaches for testing and failure analysis and describes how these different methods have practical application for failure analysis and dimensional metrology. The techniques discussed are radiography, classical laminography, computed tomography, and computed laminography.

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