Theoretical analysis of crack patching

Rose, L. R. F.

doi:10.1007/978-94-009-2752-0_5

Cited by 60 publications

(32 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This increase needs to be considered when estimating the static or fatigue strength of the repair based on representative joint data. Figures 8 and 9 show the elastic peel and shear stress distribution obtained by F-E analysis for DOFS and SDS used in earlier studies [18]. These figures are for a joint made of an aluminium alloy inner adherend 6.4 mm thick with unidirectional boron/epoxy outer adherends 1.7 mm thick, bonded with a structural film epoxy-nitrile adhesive 0.38 mm thick.…”

Section: Stress Distributions In the Representative Specimens-tensilementioning

confidence: 99%

“…Previous work [18] conducted only at RT/dry conditions showed that a promising damage parameter for fatigue in the DOFS is the estimated shear strain range in the Δγ adhesive. The damage response measured is the rate of disbond growth db/dN.…”

Section: Dofsmentioning

confidence: 99%

“…The actual load attracted by the patch system depends on its stiffness compared with the surrounding region and its planner geometry [18]. This increase needs to be considered when estimating the static or fatigue strength of the repair based on representative joint data.…”

Section: Stress Distributions In the Representative Specimens-tensilementioning

confidence: 99%

See 2 more Smart Citations

A Proposed Approach for Certification of Bonded Composite Repairs to Flight-Critical Airframe Structure

Baker

2010

Appl Compos Mater

View full text Add to dashboard Cite

This paper focuses on the difficult issue of the certification of adhesively bonded repairs in applications where credit has to be given to the patch for restoring residual strength in flight-critical structure. The scope of the paper includes both adhesively bonded composite repairs to composite components and composite repairs to metallic components. After discussing typical bonded repairs and, as a baseline, procedures currently used to certify new structure, a proposal is made which may constitute an acceptable basis for the structural certification of repairs. The key requirement is to demonstrate an acceptably low probability of patch disbonding during the remaining life of the structure. The focus is on one-off repairs where development of a comprehensive certification procedure based even on limited testing will be infeasible:

show abstract

Section: Stress Distributions In the Representative Specimens-tensilementioning

confidence: 99%

Section: Dofsmentioning

confidence: 99%

See 1 more Smart Citation

A Proposed Approach for Certification of Bonded Composite Repairs to Flight-Critical Airframe Structure

Baker

2010

Appl Compos Mater

View full text Add to dashboard Cite

show abstract

“…As was the case for plate extension, it is apparent that stiffer springs lead to lower stress intensities, reaching a limit for long cracks. Applying the method of Rose (1982Rose ( , 1988, one may analytically determine the limit strain energy release rate for a very long crack. In this case, we examine the strain energy release rate at the outer fibre of the plate.…”

Section: Bending Of Reinforced Cracked Platesmentioning

confidence: 99%

Transverse shear and pressurization effects in the bending of plates with reinforced cracks

Clark

Romilly

2006

Int J Fract

View full text Add to dashboard Cite

The authors develop an eigth-order model for bending of transversally isotropic plates and use integral transforms and a collocation method to form a line-spring model for a cracked plate. The eigth-order model allows satisfaction of the three standard plate bending boundary conditions; the normal moment, twisting moment, and transverse shear force, and an additional shear stress resultant that allows analysis of transverse normal stresses near the crack tip. The line-spring model is used to develop geometry correction factors for bending of finite-thickness plates, accounting for transverse shear deformation and pressurization of the plate near the crack tip. The line-spring model is then applied to the problem of a plate with a reinforced crack, and the results are used to validate an interpolation solution based on an energy method. While not explicitly analysed, the models are applicable to many problems, including bending of bonded repairs, fracture and fatigue of composite and layered materials, surface cracks, crack tip plasticity and crack closure or crack face interaction.

show abstract

“…Most applications have been to cracked wing or fuselage skins and the stress analysis has been based on an analogy with a one-dimensional analysis [2] where 100% of the load is carried by the patches (Fig. 1).…”

Section: Bonded Repairsmentioning

confidence: 99%

Through-thickness shape optimisation of typical double lap-joints including effects of differential thermal contraction during curing

Kaye

Heller

2005

International Journal of Adhesion and Adhesives

View full text Add to dashboard Cite

Theoretical analysis of crack patching

Cited by 60 publications

References 9 publications

A Proposed Approach for Certification of Bonded Composite Repairs to Flight-Critical Airframe Structure

A Proposed Approach for Certification of Bonded Composite Repairs to Flight-Critical Airframe Structure

Transverse shear and pressurization effects in the bending of plates with reinforced cracks

Through-thickness shape optimisation of typical double lap-joints including effects of differential thermal contraction during curing

Contact Info

Product

Resources

About