Improvement of fatigue life of riveted joints in helicopter airframes

• Autorzy: Rośkowicz Marek , Godzimirski Jan , Jasztal Michał , Gąsior Jarosław

Identyfikatory

DOI

10.17531/ein.2021.1.17

• Języki publikacji: EN

Abstrakty

EN

Using original cold-formed rivets in repairs of airframes of helicopters is difficult due to no access to inside parts of the airframe. Thus, the main aim of the study was to investigate the possibility to use the blind rivets or hybrid joints by verification the fatigue performance of such joints that must be better than with original rivets. Riveted and hybrid joints have been experimentally tested under static and fatigue loads. Furthermore, numerical calculations of stress distribution for strapped joint have been conducted. The test results covered fatigue life of lap joints and models of repaired airframe sheets using ordinary mushroom head rivets ref. 3558A-4-10, titanium driven blind bolts with pin, ref. MBF2110AB-05-150 and modified hybrid joints. Using titanium driven blind bolts with pin instead of ordinary hammer-bucked rivets, can improve the fatigue life of element made of aluminum alloy AW 2024T3. There are advantages of replacing riveted joints with modified hybrid (rivet & adhesive) joints in threefold increase in fatigue life of repaired airframe structures.

Słowa kluczowe

EN

riveted joints; hybrid joint; fatigue life; titanium driven blind bolts with pin; ordinary mushroom head rivets

• Wydawca: Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne
• Czasopismo: Eksploatacja i Niezawodność
• Rocznik: 2021
• Tom: Vol. 23, no. 1
• Strony: 165--175
• Opis fizyczny: Bibliogr. 44 poz., rys., tab.

Twórcy

autor

Rośkowicz Marek

• Department of Mechatronics, Armament and Aviation, Military University of Technology, ul. gen. Sylwestra Kaliskiego 2, 00 -908 Warsaw, Poland

autor

Godzimirski Jan

• Department of Mechatronics, Armament and Aviation, Military University of Technology, ul. gen. Sylwestra Kaliskiego 2, 00 -908 Warsaw, Poland

autor

Jasztal Michał

• Department of Mechatronics, Armament and Aviation, Military University of Technology, ul. gen. Sylwestra Kaliskiego 2, 00 -908 Warsaw, Poland

autor

Gąsior Jarosław

• Military Centre for Standardization, Quality and Codification, ul. Nowowiejska 28a, 00-909 Warsaw, Poland

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).