Searched for: subject%3A%22rivet%22
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document
Reijers, Rico (author)
Numerous traffic bridges have been constructed over the last 150 years. Because bridges are commonly built based on an expected lifetime of 75 to 100 years, a large quantity of bridges are reaching the end of their design lifetime, or even are far overdue. To ensure these bridges remain operational without experiencing catastrophic failures,...
master thesis 2024
document
van Eemeren, Adri (author)
Both GKN Aerospace Fokker Aerostructures B.V. (Fokker) and Delft University of Technology (DUT) are partaking in a Clean Sky 2 program called MANTA. MANTA stands for: MovAbles in the Next generaTion Aircraft, and is a program created by the European Union in order to meet the ’ACARE Flightpath 2050 objectives’ by achieving...
master thesis 2021
document
Pedrosa, Bruno (author), Correia, José A.F.O. (author), Rebelo, Carlos A.S. (author), Veljkovic, M. (author)
In North America and Europe, there is a significant number of centenary metallic bridges that require maintenance and strengthening operations. These structures need to be adapted to increasing traffic intensities, and their structural integrity should be constantly evaluated. Fatigue damages were not considered in the original design of old...
journal article 2020
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Pedrosa, Bruno (author), Correia, José A.F.O. (author), Rebelo, Carlos (author), Lesiuk, Grzegorz (author), De Jesus, Abílio M.P. (author), Fernandes, António A. (author), Duda, M. (author), Calçada, Rui (author), Veljkovic, M. (author)
The maintenance and safety of ancient bridges is a major concern of governmental authorities. In particular, the safety of old riveted bridges fabricated and placed into service at the end of the 19th century deserves particular attention. These structures are susceptible to exhibit high fatigue damage levels due to their long operational...
journal article 2019
document
Giagka, V. (author), Demosthenous, A. (author), Donaldson, N. (author)
Epidural spinal cord electrical stimulation (ESCS) has been used as a means to facilitate locomotor recovery in spinal cord injured humans. Electrode arrays, instead of conventional pairs of electrodes, are necessary to investigate the effect of ESCS at different sites. These usually require a large number of implanted wires, which could lead to...
journal article 2015
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Giagka, Vasiliki (author), Demosthenous, A (author), Donaldson, N (author)
Epidural spinal cord electrical stimulation (ESCS) has been used as a means to facilitate locomotor recovery in spinal cord injured humans. Electrode arrays, instead of conventional pairs of electrodes, are necessary to investigate the effect of ESCS at different sites. These usually require a large number of implantedwires,which could lead to...
journal article 2015
document
De Rijck, J.J.M. (author)
The two historical fuselage failures, Comet in 1954 and Aloha in 1988, illustrate that similar accidents must be avoided which requires a profound understanding of the fatigue mechanisms involved, including analytical models to predict the fatigue behavior of riveted joints of a fuselage structure. The scope of the research project covers a...
doctoral thesis 2005
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Mahardika, A. (author)
doctoral thesis 1999
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Müller, R.P.G. (author)
doctoral thesis 1995
document
Schijve, J. (author), Jacobs, F.A. (author)
Several simple crack stopping methods were evaluated In fatigue crack propagation tests on 2024-T3 Alclad sheet specimens. After precracklng until a crack of 40 mm was obtained crack stoppers were Installed and the fatigue test was continued. Crack stoppers Installed In stop holes were: a blind rivet, a hard driven rivet, a heavily tightened...
report 1984
document
de Jonge, J.B. (author)
The report starts with a general review of the loading of transport aircraft fuselages and the consequent fuselage skin stresses Taking the F-28 fuselage as an example, the potential weight savings that can be obtained by using ARALL as skin material are assessed. The report ends with conclusions and recommendations
report 1982
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Kolkman, H.J. (author)
The effect of penetrant on the fatigue life of single shear riveted lap joints was investigated by flight simulation fatigue tests using the MINITWIST gust spectrum. The penetrant/material combination investigated was ARDROX 985 P3T and aluminium alloy 202U-T3 sheet material (both bare and clad) respectively. The effect of penetrant on the...
report 1982
document
Nederveen, A. (author), de Jong, J.B. (author)
The influence of the approximation of the lower end of the load spectrum was investigated by comparative tests using the Basic F-27 test programme and an extended version, containing three times more cycles per flight. Crack growth was studied on notched sheet specimens made of Alclad 202U-T3 and Alclad TOT5-T6. Fatigue life tests were done on...
report 1981
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Nederveen, A. (author), de Jonge, J.B. (author), Tromp, P.J. (author)
The effects of systematic variations in mean stress level and in spectrum and ground load severity of a flight simulation test programme have been investigated on riveted specimens (fatigue life) and sheet specimens with central saw cut (crack growth). The fatigue life and crack propagation life in Alclad 202U-T3 compared with Alclad TOT5-T6...
report 1980
document
de Jonge, J.B. (author), Nederveen, A. (author), Tromp, P.J. (author)
Riveted specimens that are considered representative for F-27 type wing structure were subjected to comparative flight simululation test in which the gust load severity and Ground-Air-Ground cycle were systematically varied. The effect of these variations on crack propagation behaviour was studied by means of crack growth tests on 2 mm sheet...
report 1978
document
Schijve, J. (author), Jacobs, F.A. (author), Tromp, P.J. (author)
Comparative flight-simulation tests on four types of joints of 2024- T3 sheet material were carried out with and without application of the penetrant LPS-3. Types of joints were douhle strap joint with hi-lok bolts, asymmetric strap joint, lap joint with countersunk rivets and lap joint with dimpled holes. Observations on slip during the fatigue...
report 1977
document
Vlieger, H. (author)
Residual strength tests were carried out on center-cracked panels with a 2024-T3 or 7075-T6 skin and provided with eccentric stiffeners of practical design. The stiffeners were riveted to the skin. The material of the stiffeners was 7075-T6. In some cases the stiffeners were combined with Ti-alloy crack stoppers. On the basis of the test results...
report 1976
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Vlieger, H. (author), Sanderse, A. (author)
This report gives a detailed description of the computer program ARREST and of the execution of it in determining the residual strength diagram of cracked stiffened panels. The essentials of the computer program are dealt with in chapters 1 through 5, whereas the derivation of the equations together with the program flow charts ajid the program...
report 1975
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