Author : Hans W. Kaul
Publisher :
Page : 31 pages
File Size : 42,55 MB
Release : 1941
Category : Airplanes
ISBN :
The results from stress measurements in flight operation afford data for analyzing the frequency of appearance of certain parts of the static breaking strength during a specified number of operating hours. Appropriate frequency evaluations furnish data for the prediction of the required strength under repeated stress in the wing structures of aircraft of the different stress categories for the specified number of operating hours demanded during the life of a component.
Author : United States. Naval Air Systems Command
Publisher :
Page : 360 pages
File Size : 46,32 MB
Release : 1966
Category :
ISBN :
Author : Kavitha Chinnusamy et al.
Publisher : GRIN Verlag
Page : 11 pages
File Size : 32,78 MB
Release : 2015-04-15
Category : Technology & Engineering
ISBN : 3656942897
Seminar paper from the year 2015 in the subject Engineering - Aerospace Technology, , course: Aeronautical Engineering, language: English, abstract: The fatigue life is essential for every aircraft to rectify several damages occurred on it. In this project we have done fatigue analysis of the aircraft wing Boeing 737 series wing. The detailed modeling of aircraft wing structure made by using the software CREO parametric 2.0. The stress analysis of the wing structure is carried out. The stresses are estimated by using the finite element approach with the help of NX-NASTRON to find out the fatigue life and safety factor of the structure. This Project describes about the finite element analysis of spar, ribs of a wing. The objective of this study is to reduce the weight to the maximum possible extent. The response of the wing structure will be evaluated. In this study prediction of fatigue life, safety factor, strength safety factor will be carried out.
Author : United States. National Advisory Committee for Aeronautics
Publisher :
Page : 48 pages
File Size : 39,36 MB
Release : 1947
Category : Airplanes
ISBN :
Author : J. Y. Mann
Publisher : Elsevier
Page : 572 pages
File Size : 18,53 MB
Release : 2013-10-22
Category : Business & Economics
ISBN : 1483146456
Aircraft Fatigue: Design, Operational and Economic Aspects contains the proceedings of the ""Symposium on Aircraft Fatigue—Design, Operational and Economic Aspects,"" held in Melbourne, Australia, on May 22-24, 1967. The papers explore the design and operational aspects of the fatigue problem in general aviation and transport aircraft, as well as the economic aspects of the fatigue problem as it affects both operators and manufacturers. This book is comprised of 21 chapters and begins with a description of an approach to structural reliability analysis based on order statistics and the expected time to first failure in a fleet of specified magnitude, along with its application to structures subject to progressive fatigue damage. The following chapters deal with structural load measurement and analysis; design and certification programs for a wide range of aircraft types including the Anglo-French and American civil supersonic transports; acoustic fatigue; and the design of joints. The detection of fatigue cracks in service and the effects of fatigue on the cost of design and operation of aircraft are also discussed. This monograph will be a useful resource for aircraft and aeronautical engineers as well as officials of civil aviation.
Author : Paul R. Abelkis
Publisher :
Page : 126 pages
File Size : 35,60 MB
Release : 1967
Category : Airframes
ISBN :
Aircraft fatigue strength design and analysis concepts were investigated in the areas of fatigue life scatter factors and fatigue strength design-analysis charts. A fatigue scatter factor is defined as the ratio of the mean life to the life for a specified probability of failure and confidence level. For design purposes, operational life scatter factor are defined in terms of the joint probability distribution of the applied loads spectra variation in a fleet of aircraft and the basic fatigue life scatter represented by fatigue test data. Basic fatigue life scatter properties for aluminum alloy materials and structures were statistically derived from a fatigue test data survey of over 6,000 specimens. The basic scatter derived frequency and probability distributions greatly deviate from the log Normal distribution beyond micron + or -2 sigma. Several joint probability distribution models illustrate the procedure of calculating operational life scatter factors. An actual aircraft service failure history is accurately predicted by the joint probability distribution concept. A procedure for the development of fatigue strength design-analysis charts is outlined and illustrated by several examples. The charts, in the form of damage rate curves, are defined by generalized loads spectra parameters and the fatigue quality of the structural element.
Author : Dwight O. Fearnow
Publisher :
Page : 34 pages
File Size : 21,22 MB
Release : 1951
Category : Airframes
ISBN :
Author :
Publisher :
Page : 1082 pages
File Size : 31,85 MB
Release : 1940
Category : Aeronautics
ISBN :
Author : United States. National Advisory Committee for Aeronautics
Publisher :
Page : 616 pages
File Size : 18,31 MB
Release : 1949
Category : Aeronautics
ISBN :
Author : United States. National Advisory Committee for Aeronautics
Publisher :
Page : 272 pages
File Size : 21,70 MB
Release :
Category : Aeronautics
ISBN :
