scholarly journals The monitoring of technical condition of cultural heritage objects

2019 ◽  
Vol 91 ◽  
pp. 05020
Author(s):  
Vera A. Akristiniy
Keyword(s):  
Cultural Heritage ◽  
Technical Condition ◽  
Integrated System ◽  
Non Destructive Testing ◽  
Testing Methods ◽  
Destructive Testing ◽  
Complex Monitoring ◽  
Cultural Heritage Objects ◽  
Non Destructive ◽  
Restoration Measures

The article deals with the conservation of cultural heritage objects due to their potential widespread deterioration. The suggestion to solve this problem is to create an integrated system for complex monitoring of cultural heritage objects technical condition. The stages of creating a realtime monitoring system with the choice of non-destructive testing methods, the necessary instruments, and tools, the result of which is the formation of a decision-making mechanism for a particular object, are proposed. Conducting monitoring by means of modeling allows predicting the behavior of structures and the building as a whole, taking into account the implementation of restoration measures.

scholarly journals Magnetic Tests of SNA - HP-59A Kinematic Connection Details in the RD-33 Engine

2020 ◽  
Vol 50 (2) ◽  
pp. 199-218
Author(s):  
Karol Bogucki
Keyword(s):  
Technical Condition ◽  
Magnetic Field Measurement ◽  
Non Destructive Testing ◽  
Testing Methods ◽  
Destructive Testing ◽  
Kinematic System ◽  
Magnetic Metal ◽  
In The Beginning ◽  
Non Destructive ◽  
Theoretical Foundations

AbstractAspects of assessing the technical condition of selected elements of the kinematic system in the renovation of RD-33 engines have been presented. In the beginning, typical operational problems have been discussed, and the test object was defined. Then, the theoretical foundations of three non-destructive testing methods based on magnetic field measurement were discussed. Next, the preliminary results of the research of a defective gear obtained by the magnetic metal memory method are presented. Finally, the conclusions have been made.

Estimation of Thickness of Concrete Slab Members Using Impact Echo Method

2014 ◽  
Vol 605 ◽  
pp. 139-142
Author(s):  
Seong Uk Hong ◽  
Yong Taeg Lee ◽  
Seung Hun Kim ◽  
J.H. Na
Keyword(s):  
Concrete Slab ◽  
Hardness Test ◽  
Pulse Velocity ◽  
Non Destructive Testing ◽  
Testing Methods ◽  
Destructive Testing ◽  
Impact Echo ◽  
Maintenance And Repair ◽  
Non Destructive ◽  
Impact Echo Method

Recently, the interest in maintenance and repair of existing concrete structures have increased, and it is typical to use non-destructive testing methods such as rebound hardness test or ultrasonic pulse velocity method to execute maintenance and repair of structures efficiently. Many non-destructive testing methods are being used in practice such as at construction sites, but verification for site applications are quite inadequate. Thus, this study intends to evaluate the applicability of Impact Echo Method which is one of the non-destructive testing methods using stress wave. Total of four specimens were planned and produced. The thickness of concrete slab members was estimated using I.E(OLSENs Freedom Data PC with Win.TFS Software Version 2.5.2). The estimated materials of concrete members by IE was found to be IE-1 specimen 178mm, IE-2 specimen 197mm, IE-3 specimen 191mm, and IE-4 specimen 263mm, and the error rate was found to be 4.22%~18.67% (average 9.6%), showing that they are relatively well in agreement. In this study, the experiments were executed with the objective of estimating the thickness of concrete slab members using Impact Echo Method. Through this study, the applicability of thickness estimation in concrete slab members using impact echo method could be confirmed.

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