Non-destructive testing methods of assemblies and units of fire and emergency technique

Purpose. The substantiation of the use of modern methods for assessing and monitoring the state of fire and emergency equipment in order to ensure its trouble-free operation. Methods. Non-destructive methods, computer simulation, tensometry. Findings. The review of methods existing for assessment and control of assemblies and units of fire and rescue vehicles technical state is performed. Some results of their application are presented. The application possibility of non-destructive testing methods is assessed. Application field of research. Fire rescue equipment, welded joints of technical objects.

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Comparison of Non-Destructive Testing Techniques

Defect and Diffusion Forum ◽

10.4028/www.scientific.net/ddf.410.862 ◽

2021 ◽

Vol 410 ◽

pp. 862-866

Author(s):

Oleg B. Bavykin ◽

Rodion N. Loginov

Keyword(s):

Welded Joints ◽

Ultrasonic Testing ◽

Ultrasonic Method ◽

Non Destructive Testing ◽

Testing Methods ◽

Destructive Testing ◽

Advantages And Disadvantages ◽

Comparison Results ◽

Testing Techniques ◽

Non Destructive

The article discusses the types of dangerous defects in welded joints. The main methods of non-destructive testing are described, their advantages and disadvantages are briefly reflected. The comparison of the automated ultrasonic testing methods with radiographic ones is given on the example of testing the welded joints of ASME DN350 Py250 pipe fittings with a thickness of the welded edges of 53.9 ÷ 61.3 mm. The comparison results of the methods by the criterion of the accuracy of determining the coordinates of defects are presented, which show the expediency of replacing the automated ultrasonic method with the radiographic one, provided that the thickness of the welded edges is shallow.

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Nonconventional concrete hollow blocks evaluation by destructive and non-destructive testing

Revista IBRACON de Estruturas e Materiais ◽

10.1590/s1983-41952013000300004 ◽

2013 ◽

Vol 6 (3) ◽

pp. 392-398

Author(s):

M.S. Rodrigues ◽

G.C.S. Ferreira ◽

L. Shiroma ◽

A.L. Beraldo

Keyword(s):

Portland Cement ◽

Silica Fume ◽

Statistical Difference ◽

Rice Husk Ash ◽

Partial Replacement ◽

Non Destructive Testing ◽

Destructive Testing ◽

And Control ◽

Non Destructive ◽

Destructive Methods

The aim of this study was to evaluate cementitious matrices properties by partial replacement of Portland cement by silica fume (SF) or by rice husk ash (RHA), and their application in nonbearing hollow blocks, tested by destructive and non-destructive methods. The following mixtures were produced: reference (100% of Portland cement) and Portland cement replacement (10% by mass) with SF or RHA. The non-destructive testing showed that the highest values of UPV were obtained for SF-based blocks and RHA-based blocks. The destructive test showed better results for SF-based blocks, but there was no statistical difference between the RHA-based and control ones.

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