Design and Analysis of Composite Window Frame for a Regional Aircraft

2020 ◽  
Vol 11 (04) ◽  
pp. 2050006
Author(s):  
João Afonso Gaspar Lopes ◽  
Omar Bacarreza ◽  
Zahra Sharif Khodaei
Keyword(s):  
Structural Integrity ◽  
Thermoplastic Composite ◽  
Design Criteria ◽  
Adhesively Bonded ◽  
Window Frame ◽  
Damage And Failure ◽  
Shear Loads ◽  
Failure Loads ◽  
Flight Loads ◽  
Fuselage Skin

This work presents the design and analysis of a thermoplastic composite window frame for integration into a regional aircraft. The main parameters which are investigated include buckling, damage and failure loads of a composite window frame subjected to shear loads repesentative of fuselage skin stress distribution due to flight loads. The attachment of such thermoplastic window frame to a thermoset fuselage skin was investigated including both adhesively bonded interface as well as riveting. Even though the bonded frame did meet the design criteria, its failure was very sudden, and the riveted assembly showed a considerably higher strength and structural integrity. The numerical simulation resulted in failure loads which matched very closely to experimental results.

scholarly journals Structural integrity of adhesively bonded 3D-printed joints

2021 ◽  
pp. 107262
Author(s):  
Mohammad Reza Khosravani ◽  
Payam Soltani ◽  
Kerstin Weinberg ◽  
Tamara Reinicke
Keyword(s):  
Structural Integrity ◽  
Adhesively Bonded ◽  
3D Printed

Qualifications of Adhesives for Marine Composite-to-Steel Bonded Applications

2009 ◽  
Vol 25 (04) ◽  
pp. 198-205
Author(s):  
George W. Ritter ◽  
David R. Speth ◽  
Yu Ping Yang
Keyword(s):  
Mechanical Property ◽  
Structural Integrity ◽  
Adhesively Bonded ◽  
Load Bearing Capacity ◽  
Property Evaluation ◽  
Marine Industry ◽  
Straightforward Method ◽  
Bonded Composite ◽  
Steel Joints ◽  
Marine Composite

This paper describes a straightforward method for the design and certification of adhesively bonded composite to steel joints for the marine industry. Normally, certification is based on documented service at sea. Since these joints have not been previously deployed at sea, no data on their performance exist. Using an integrated combination of mechanical property evaluation and finite element modeling, the load- bearing capacity of a joint can be compared with the anticipated seaway loads. Calculated factors of safety for the sandwich design used here show that the joint has adequate strength to maintain structural integrity even after severe environmental exposure.

The structural integrity of a novel composite adhesively bonded flap-track beam

2011 ◽  
Vol 93 (8) ◽  
pp. 2049-2059 ◽  
Author(s):  
K.I. Tserpes ◽  
R. Ruzek ◽  
R. Mezihorak ◽  
G.N. Labeas ◽  
Sp.G. Pantelakis
Keyword(s):  
Structural Integrity ◽  
Adhesively Bonded ◽  
Track Beam

scholarly journals A Numerical and Experimental Study of Adhesively-Bonded Polyethylene Pipelines

Polymers ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 1531 ◽  
Author(s):  
Guilpin ◽  
Franciere ◽  
Barton ◽  
Blacklock ◽  
Birkett
Keyword(s):  
Cohesive Zone ◽  
Adhesive Bonding ◽  
Structural Integrity ◽  
Cohesive Zone Model ◽  
Low Cost ◽  
Element Model ◽  
Zone Model ◽  
Adhesively Bonded ◽  
Lap Shear ◽  
Lap Shear Test

Adhesive bonding of polyethylene gas pipelines is receiving increasing attention as a replacement for traditional electrofusion welding due to its potential to produce rapid and low-cost joints with structural integrity and pressure tight sealing. In this paper a mode-dependent cohesive zone model for the simulation of adhesively bonded medium density polyethylene (MDPE) pipeline joints is directly determined by following three consecutive steps. Firstly, the bulk stress–strain response of the MDPE adherend was obtained via tensile testing to provide a multi-linear numerical approximation to simulate the plastic deformation of the material. Secondly, the mechanical responses of double cantilever beam and end-notched flexure test specimens were utilised for the direct extraction of the energy release rate and cohesive strength of the adhesive in failure mode I and II. Finally, these material properties were used as inputs to develop a finite element model using a cohesive zone model with triangular shape traction separation law. The developed model was successfully validated against experimental tensile lap-shear test results and was able to accurately predict the strength of adhesively-bonded MPDE pipeline joints with a maximum variation of <3%.

scholarly journals Significantly enhanced structural integrity of adhesively bonded PPS and PEEK composite joints by rapidly UV-irradiating the substrates

2020 ◽  
Vol 199 ◽  
pp. 108358
Author(s):  
Dong Quan ◽  
René Alderliesten ◽  
Clemens Dransfeld ◽  
Ioannis Tsakoniatis ◽  
Sofia Teixeira De Freitas ◽  
...  
Keyword(s):  
Structural Integrity ◽  
Composite Joints ◽  
Adhesively Bonded ◽  
Peek Composite

DESIGN CRITERIA FOR WIND-INDUCED FLIGHT LOADS ON LARGE BOOSTED VEHICLES

AIAA Journal ◽  
1963 ◽  
Vol 1 (4) ◽  
pp. 913-914 ◽  
Author(s):  
LUCIANO L. MAZZOLA
Keyword(s):  
Design Criteria ◽  
Flight Loads

EFFECT OF TENSILE SPEED ON THE FAILURE LOAD OF A SPOT WELD UNDER COMBINED LOADING CONDITIONS

2008 ◽  
Vol 22 (09n11) ◽  
pp. 1469-1474 ◽  
Author(s):  
JUNG-HAN SONG ◽  
HOON HUH ◽  
JI-HO LIM ◽  
SUNG-HO PARK
Keyword(s):  
Failure Load ◽  
Rate Sensitivity ◽  
Shear Loading ◽  
Spot Weld ◽  
Combined Loading ◽  
Failure Behavior ◽  
Loading Conditions ◽  
Dynamic Failure ◽  
Shear Loads ◽  
Failure Loads

This paper is concerned with the evaluation of the dynamic failure load of the spot weld under combined axial and shear loading conditions. The testing fixture are designed to impose the combined axial and shear load on the spot weld. Using the proposed testing fixtures and specimens, quasi-static and dynamic failure tests of the spot weld are conducted with seven different combined loading conditions. The failure load and failure behavior of the spot weld are investigated with different loading conditions. Dynamic effects on the failure load of the spot weld, which is critical for structural crashworthiness, are also examined based on the experimental data. In order to evaluate the effect of the strain rate on the failure contour of the spot weld under combined axial and shear loads, the failure loads measured from the experiment are decomposed into the two components along the axial and shear directions. Experimental results indicate that the failure contour is expanded with increasing strain rates according to the rate sensitivity of the ultimate stress for welded material.

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