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Checking the Correctness of the Process of Brazing of the Honeycomb Seal to the Base by Ultrasonic Method

Fatigue of Aircraft Structures
Volume 2022 (2022): Issue 14 (December 2022)
By:
Open Access
|Nov 2023

Figures & Tables

Figure 1.

Honeycomb seals.
Honeycomb seals.

Figure 2.

Examples of the correct and bad layouts of the solder in the sealant cell.
Examples of the correct and bad layouts of the solder in the sealant cell.

Figure 3.

Borescopic test stand.
Borescopic test stand.

Figure 4.

Sample no. 1.
Sample no. 1.

Figure 5.

Sample no. 2 – clearly visible unsoldered areas.
Sample no. 2 – clearly visible unsoldered areas.

Figure 6.

Sample no. 2.
Sample no. 2.

Figure 7.

Sample no. 3.
Sample no. 3.

Figure 8.

Sample no. 4 – clearly visible unsoldered areas.
Sample no. 4 – clearly visible unsoldered areas.

Figure 9.

Sample no. 4 – clearly visible unsoldered areas.
Sample no. 4 – clearly visible unsoldered areas.

Figure 10.

The image of the reflected wave at the correct connection of the base and the sealant.
The image of the reflected wave at the correct connection of the base and the sealant.

Figure 11.

The image of the reflected wave at the correct connection of the base and the sealant.
The image of the reflected wave at the correct connection of the base and the sealant.

Figure 12.

The image of the reflected wave at the wrong base–sealer connection.
The image of the reflected wave at the wrong base–sealer connection.

Figure 13.

The image of the reflected wave at the wrong base–sealer connection.
The image of the reflected wave at the wrong base–sealer connection.

Figure 14.

Test system for assessing the condition of base–cellular sealant connections. 1 – ultrasonic flaw detector, 2 – head, 3 – coupling medium, 4 – reference sample, 5 – tested object.
Test system for assessing the condition of base–cellular sealant connections. 1 – ultrasonic flaw detector, 2 – head, 3 – coupling medium, 4 – reference sample, 5 – tested object.

Figure 15.

Image of the signal on the flaw detector screen for the area with the correct state of the base–cellular sealant connection.
Image of the signal on the flaw detector screen for the area with the correct state of the base–cellular sealant connection.

Figure 16.

Image of the signal on the flaw detector screen for the area with the wrong base–cellular sealant connection.
Image of the signal on the flaw detector screen for the area with the wrong base–cellular sealant connection.

Figure 17.

Signal image with proper connection status.
Signal image with proper connection status.

Figure 18.

Signal image with wrong connection status.
Signal image with wrong connection status.
DOI: https://doi.org/10.2478/fas-2022-0005 | Journal eISSN: 2300-7591 | Journal ISSN: 2081-7738
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Language: English
Page range: 47 - 68
Published on: Nov 28, 2023
Published by: Institute of Aviation
In partnership with: Paradigm Publishing Services
Publication frequency: 1 issue per year
Keywords:
turbine aircraft engines,
honeycomb seals,
hard soldering,
non-destructive testing,
soldering correctness control
Related subjects:
Engineering,
Introductions and overviews,
Engineering, other

© 2023 Agata Świerek, Józef Krysztofik, Wojciech Matczak, Antoni Niepokólczycki, published by Institute of Aviation
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

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