Probabilistic analysis of multi-site damage in aircraft fuselages

Proppe, Carsten

doi:10.1007/s00466-002-0408-x

Cited by 25 publications

(10 citation statements)

References 33 publications

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“…The parameters of the Paris-Erdogan law are modeled such that m = 2 and C ∼ LN(2.5 × 10 −23 , 2.5 × 10 −24 ) P a −2 cycles −1 . The stress intensity factors associated with the problem are calculated using the Finite Element Alternating Method (Wang and Atluri, 1996), which has been shown to be a feasible method for studying crack propagation problems considering uncertainties (Proppe, 2003;Proppe et al, 2002). The failure event -the collapse of the mechanical component due to crack propagation -is modeled using the so-called R6 curve criterion (see, e.g.…”

Section: Description Of the Problemmentioning

confidence: 99%

A General Purpose Software For Reliability-Based Optimal Design

Valdebenito

Patelli²,

Schuëller³

2010

Proceedings of the 4th International Workshop on Reliable Engineering Computing Robust Design – Coping With Hazards, Risk and U

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Due to the inherent uncertainties in loads, materials and manufacturing quality, variabilities are unavoidable in structural responses and can cause significant deviations in expected product performance. To ensure the reliability of a structure, these uncertainties must be considered during structural design. In cases where a structure is optimized such that the design requirements are barely met, it is important for engineers to asses the design's reliability and, if necessary, optimize the structure considering the reliability requirement. In those situations where variations in design and operating environment result in considerable variability of the performance of a system, it is critical for engineers to search for a robust design. A robust design is one in which the performance deviation is within acceptable limits. The objective of this paper is to present a life cycle management tool implemented within a general purpose stochastic analysis software named COSSAN-XTM . An overview of the tools for reliability and optimization implemented in the code which are required to solve the robust design problem is presented. In addition, the interaction with deterministic Finite Element codes is also addressed. The salient features of the software are presented by means of a challenging problem of Reliability based optimization and life cycle management.

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Section: Description Of the Problemmentioning

confidence: 99%

A General Purpose Software For Reliability-Based Optimal Design

Valdebenito

Patelli²,

Schuëller³

2010

Proceedings of the 4th International Workshop on Reliable Engineering Computing Robust Design – Coping With Hazards, Risk and U

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“…Now more and more companies require the aircraft longer life in order to reduce costs and gain more profits. Aircraft structure bears the load by the joints which easily generate stress concentration, so the quality of the holes greatly affects the life of the aircraft [1]. American is the earliest country that applies automatic drilling/riveting technology.…”

Section: Introductionmentioning

confidence: 99%

A design of aircraft drilling end-effector based on flexible railway

Yuan

Gong

et al. 2012

IEEE 10th International Conference on Industrial Informatics

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This paper describe a design of aircraft drilling end-effector (ADEE) based on flexible railway which is mainly used for drilling on the surface of fuselage and wing of aircraft. The whole system is composed of several different modules. Flexible railway module (FRM) make ADEE move to any places where need to be drilled. Framework and Z axis module (FZM) uses high-rigidity framework and linear slide guide to guarantee the precision and stability of the drilling action. Compression and absorbing chipping module (CACM) adopts symmetric doublecylinder structure and generates 1000N compressing forces that can compress three layers aircraft skin and is increased by demand. Vacuous absorbing chipping mechanism uses high flow vacuum generator as vacuum air source and filters metal shavings by filter. Visual inspection module (VIM) can precisely calculate the distance between three points around drill bit and finished surface by calculating, and then achieves verticality deviation value through normal detection algorithm. Binary angular adjustment module (BAAM) revises angle deviation that is caused by the differences of adsorption position diameter of two rows of rack. ADEE is more flexible and better adaptable; meanwhile, it can greatly improve the efficiency and precision of the holes. It does not use drilling fluids in the whole manufacturing process and fundamentally eliminates the pollution problem of the drilling fluid. In conclusion, experiments show that ADEE can meet the requirements of automatic drilling of departments of aircraft and greatly enhance the quality and speed of drilling holes.

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“…New technologies are highly desired to satisfy the general requirements of aircraft manufacturing such as fatigue failure proof, insufficient accuracy compensation, etc. The quality of joint has much effect on the age limit of airplane [ 1 ] [2]. The fatigue strength can be improved by using automatic drilling robot while manual drilling cannot guarantee a high-quality connection restricted by labor's proficiency and strength.…”

Section: Introductionmentioning

confidence: 99%

Intelligent Surface-normal Adjustment System and Application in Aeronautical Drilling Robot

Zhang

Yuan

Gong

2012

2012 Second International Conference on Intelligent System Design and Engineering Application

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Aeronautical drilling robot has been widely adopted in aircraft manufacturing with its high efficiency and reliability. Automatic drilling, however, requires the drill bit to be perpendicular to the curved surface of fuselage. In this paper, we present an intelligent surface-normal adjustment system to deal with the problem. This system calculates surface-normal vector by obtaining three measurement positions with laser range sensors and provides correction values to an innovative binary angular adjustment mechanism to regulate the feed direction of the drilling bit in real-time. We carried out a number of experiments on the aeronautical drilling robot. The experimental results demonstrate that this system can decrease the surface-normal error to less than ±0.5°and well meet the demand of modern aircraft manufacturing.

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Probabilistic analysis of multi-site damage in aircraft fuselages

Cited by 25 publications

References 33 publications

A General Purpose Software For Reliability-Based Optimal Design

A General Purpose Software For Reliability-Based Optimal Design

A design of aircraft drilling end-effector based on flexible railway

Intelligent Surface-normal Adjustment System and Application in Aeronautical Drilling Robot

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