Local Phenomena During Riveting Process

• Autorzy: Kaniowski J. , Wronicz W.

Identyfikatory

DOI

10.2478/fas-2013-0007

• Języki publikacji: EN

Abstrakty

EN

The paper presents experimental and numerical study of the local phenomena during the riveting process. It is commonly accepted that technological factors of the riveting process has a strong influence on the fatigue life of riveted joints. The authors analysed the papers concerned the experimental researches of the riveting force influence on fatigue life. The magnitude of the life increase caused by the riveting force increase suggests the authors that this is not only the result of beneficial stress system but the change of the joint formation mechanism has taken place. This was an inspiration to undertake more detailed researches of the riveting process. The strain progress during the riveting process has been experimentally investigated for four types of aluminium rivets used in airframes. Measurements confirm very high strains near the driven head. For some types of rivets the reversal strain signal has been recorded. Several FE model has been use to investigate the riveting process. The axisymmetric and solid models were used. The agreement of experimental and numerical results in some cases were good, in other cases the numerical models demand further development. In any calculations, the reversal strain effect has not been obtained, This suggest that it is result of the phenomenon which has not been taken into account in numerical modelling. The working hypothesis has been assumed that during the riveting process adhesive joints (called cold welding) were formed and destroyed during the process, what was the reason of the observed reversal strain signal. The authors are going to continue this investigation.

Słowa kluczowe

EN

riveting; fatigue; strain gauge; FE model; residual stress; airframes

• Wydawca: Wydawnictwa Naukowe Sieci Badawczej Łukasiewicz - Instytutu Lotnictwa
• Czasopismo: Fatigue of Aircraft Structures
• Rocznik: 2013
• Tom: Iss. 5
• Strony: 66--78
• Opis fizyczny: Bibliogr. 9 poz., fot., rys., tab., wykr.

Twórcy

autor

Kaniowski J.

• Institute of Aviation, Warsaw, Poland

autor

Wronicz W.

• Institute of Aviation, Warsaw, Poland

Bibliografia

• [1] Müller R. P.G., Hart-Smith L.J.: Making fuselage riveting lap splices with 200-year crack-free fatigue life. ICAF 97`. Fatigue in new and ageing aircraft. Proceedings of the I9-th Symposium of the International Committee of Aeronautical Fatigue 1997, Edinburgh, EMAS Publishing, pp.499-522,
• [2] Muller R., An Experimental and Analytical Investigation on the Fatigue Behaviour of Fuselage Riveted Lap Joint, TU Delft, Netherlands, 1995.
• [3] Rans C. D. The Role of Rivet Installation on the Fatigue Performance of Riveted Lap Joints. PhD thesis, Carleton University Ottawa, Ontario, Canada, 2007
• [4] Wronicz W., Kaniowski J., Experimental and Numerical Study of Strain Progress During and After Riveting Process for Brazier Rivet and Rivet with Compensator - squeezing force and rivet type effect. Fatigue of Aircraft Structures Monographic Series A. Niepokólczycki (Ed.), Institute of Aviation Scientific Publication, ISSUE 2011., pp.165-189
• [5] Szymczyk E., Jachimowicz J., Sławiński G., Derewońko A., Influence of technological imperfections on residual stress fields in riveted joint. Dissipation and Damage across Multiple Scales in Physical and Mechanical Systems, Oxford, United Kingdom, 2009, pp.1-4
• [6] Skorupa M, Skorupa A, Michniewicz T, Korbel A. Effect of production variables on the fatigue behaviour of riveted lap joint. International Journal of Fatigue 32 (2010) pp.996-1003
• [7] Langrand B., Patronelli L., Deletombe E., Markiewicz E., Drazétic P., An alternative numerical approach for full scale characterization for riveted joint design, Aerospace Science and Technology 6 (2002) pp. 343-354
• [8] Li, G., Shi, G., Bellinger N.C. Studies of Residual Stress in Single-Row Countersunk Riveted Lap Joints, Journal of Aircraft, Vol. 43, No. 3, 2006, pp.592-599
• [9] Wronicz W., Kaniowski J., Analysis of the Quasi-Static Process for 90º Countersunk Rivet, Fatigue of Aircraft Structures Monographic Series A. Niepokólczycki (Ed.), Institute of Aviation Scientific Publication, ISSUE 2012., (article in press).

Uwagi

EN

A major proportion of the research presented here was carried out under the Eureka project E3496! IMPERJA.