Stress Analysis of the PZL M28’s Airframe Subjected to Repairs During Fatigue Tests

The PZL M28’s service life is determined based on the fatigue tests of the wing and wing loads-carry-through structure. During the fatigue test, the first occurrence of significance was the appearance of a in the area of the wing where loads are applied from the strut. It was demonstrated during fur...

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Bibliographic Details
Published in:Fatigue of aircraft structures 2014-06, Vol.2014 (6), p.107-112
Main Authors: Brzęczek, Józef, Gruszecki, Henryk, Pieróg, Leszek, Deszcz, Franciszek, Pietruszka, Janusz
Format: Article
Language:English
Subjects:
Aging aircraft
Airframes
Fatigue tests
full scale fatigue tests
Maintenance
metallic airframe structure
Repairing
Service life
Stress analysis
Wings (aircraft)
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Summary:The PZL M28’s service life is determined based on the fatigue tests of the wing and wing loads-carry-through structure. During the fatigue test, the first occurrence of significance was the appearance of a in the area of the wing where loads are applied from the strut. It was demonstrated during further activities that repairs of the wing and other basic assemblies enabled, when performed at an appropriate time, the airplane’s service life to be significantly increase. In the case of each design change implemented in the airframe subject to the fatigue testing, a stress analysis of the airframe was required in order to check if local changes, i.e. local repairs, did not affect the stress level in other tested areas. This helped to avoid significant stress redistribution in the airframe after the repair, so the fatigue test was still valid for all areas of interest.
ISSN:2300-7591
2081-7738
2300-7591
DOI:10.1515/fas-2014-0011