Non-destructive testing. Aids to visual inspection. Selection of low-power magnifiers

1998 ◽  
Keyword(s):  
Low Power ◽  
Visual Inspection ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Non Destructive ◽  
Selection Of

scholarly journals Design and Development of Aircraft Propeller Maintenance Facility for General Aviation

Khazanah ◽  
2020 ◽  
Vol 12 (2) ◽  
Author(s):  
Amman Mujahid ◽  
Keyword(s):  
Environmental Impact ◽  
Visual Inspection ◽  
General Aviation ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Proactive Approach ◽  
Maintenance Techniques ◽  
Set Up ◽  
Environment Sustainability ◽  
Non Destructive

Since the first flight and introduction of propellers from marine to the sky, various maintenance techniques have been employed to maintain aircraft propellers. With the advancement in the operation and safety of flight, propellers have been manufactured in various materials, shapes and measurements. The design developed is based on the concept of a “single stop shop facility”. The propeller maintenance facility majorly focuses the general aviation in order to provide them a set up that primarily focuses on the maintenance of propellers in order to avoid malfunctions resulting in accidents and failures. The maintenance procedures for workbench include static balancing, blade tracking, cleaning, visual inspection, corrosion removal and Non-Destructive Testing (NDT). The developed facility has an accelerated scalability with the provision of facilitating Non-Destructive Testing that is performed on the workbench. The non-destructive testing results in assuring reliability and safety of the propellers as per the modern maintenance practices. The workbench developed focuses over the environment sustainability as it functions on the concept of sustainable maintenance that involves reduced unnecessary maintenance. Moreover, the currently developed facility integrates a proactive approach involving reduced use of energy in order to produce less waste and environmental impact. At present, the workbench has been manufactured and is being tested for propeller maintenance procedures.

Application of the Wavelet Analysis to Inspection of Compact Ropes Using a High-Efficiency Device / Analiza falkowa efektywnym narzędziem diagnostyki lin kompaktowanych

2013 ◽  
Vol 58 (1) ◽  
pp. 159-164 ◽  
Author(s):  
Jerzy Kwaśniewski
Keyword(s):  
Wavelet Analysis ◽  
High Efficiency ◽  
Qualitative Assessment ◽  
Assessment Procedure ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Major Step ◽  
Magnetic Inspection ◽  
Non Destructive ◽  
Selection Of

This study explores the potential application of the wavelet analysis to the assessment of the working condition of compact ropes (qualitative assessment). The assessment procedure is a key aspect in the decision- making during the non-destructive testing. This is the first study on diagnostics of the new-design ropes, summarising the results of the analysis of signals from novel compact ropes, based on the defect models. Selection of the wavelet type and of the decomposition detail is a key element of the diagnostic procedure. A major step in the assessment procedure involves the replicas of the rope’s surface. The data provided in this paper will be useful in developing new specialist equipment for magnetic inspection of compact ropes.

scholarly journals Uncertainty in condition prediction of bridges based on assessment method – case study in Estonia

2019 ◽  
Author(s):  
Sander Sein ◽  
Juhan Idnurm ◽  
José C. Matos
Keyword(s):  
Continuous Time ◽  
Visual Inspection ◽  
Assessment Method ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Inference Procedure ◽  
Wrong Decision ◽  
Traditional Assessment ◽  
Non Destructive

<p>In this paper the uncertainty in condition assessment based on most common assessment methods, visual inspection and non-destructive testing, is investigated. For decision-making the averaged or estimated value is suitable, but if the basis of a decision is only a subjective visual inspection, then it could lead to a wrong decision. The second most traditional assessment method is non-destructive testing (NDT), which can give reliable results, but the interpretation of measurement is needed. To investigate the errors in both evaluations, benchmarking tests were carried out in Estonia within two groups, a group of experienced inspectors and a group of unexperienced students, to show how the importance of experience affects results. To present the influence of assessment uncertainty to condition prediction curves based on continuous-time Markov model are calculated and for updating, Bayesian inference procedure is used.</p>

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