Analysis of bonding layer quality in repair process of aircraft composite structure after impact damage

• Autorzy: Sałaciński Michał , Orzechowski Paweł , Chalimoniuk Marek , Leski Andrzej

Warianty tytułu

PL

Analiza jakości warstwy wiążącej podczas procesu naprawy struktury konstrukcji kompozytowej samolotu po uszkodzeniu udarowym

• Języki publikacji: EN

Abstrakty

EN

Aircraft composite structures made in autoclave prepreg technology are characterized by low porosity and high strength. Unfortunately, composite structures are susceptible to impact damage. Therefore in order to repair this type of structures, an advantageous method of structure restoration is the use of the two-step bonding method. This method relies on creating a composite patch cured in an autoclave and then bonding it into a previously prepared repair area in the repaired structure, created by removing the damaged layers. Thanks to this approach, the patch is produced in accordance with the production process of the repaired element and has similar properties including low porosity. A critical element of repair is the bonding layer between the patch and repaired structure. Difficulties in obtaining an appropriate consolidation pressure (compression) using a vacuum bag can cause local disbonding of the composite patch as well as porosity in the bonding layer. Porosity reduces the strength properties of the joint, and it also reduces its weather resistance, which may contribute to its gradual degradation. The article focuses on analysis of the influence of compression obtained by a vacuum bag on the porosity and thickness of the bonding layer. A professional line for the production of aircraft composites and a mobile system for composite repairs of aircraft structures were used to produce the samples. The computed tomography method was used to measure the porosity and thickness of the bonding layer.

Słowa kluczowe

EN

bonding; composite repair; impact damage; porosity; computed tomography

PL

klejenie; naprawa kompozytów; uszkodzenia udarowe; porowatość; tomografia komputerowa

• Wydawca: Polskie Towarzystwo Materiałów Kompozytowych
• Czasopismo: Composites Theory and Practice
• Rocznik: 2020
• Tom: R. 20, nr 3-4
• Strony: 134--141
• Opis fizyczny: Bibliogr. 25 poz., rys., tab.

Twórcy

autor

Sałaciński Michał

• Airworthiness Division, Air Force Institute of Technology, ul. Księcia Bolesława 6, 01-494 Warszawa, Poland

autor

Orzechowski Paweł

• Airworthiness Division, Air Force Institute of Technology, ul. Księcia Bolesława 6, 01-494 Warszawa, Poland

autor

Chalimoniuk Marek

• Airworthiness Division, Air Force Institute of Technology, ul. Księcia Bolesława 6, 01-494 Warszawa, Poland

autor

Leski Andrzej

• Łukasiewicz Research Network – Institute of Aviation, al. Krakowska 110/114, 02-256 Warszawa, Poland

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