Analysis of Cracked, Adhesively Bonded Laminated Structures

Ratwani, M.

doi:10.2514/3.61263

Cited by 121 publications

(38 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This expression for A(~) can be substituted in (12), and (11) solved numerically, but a comprehensive numerical study of infinite reinforcements is already available [6,7]. The present formulation has the advantage that it can be used to establish the following results, not previously noted.…”

Section: An Integral Equation For Arbitrary Crack Lengthmentioning

confidence: 99%

“…Its practical relevance is emphasized by the circumstance that the numerical solution of (l l), and the direct numerical approach used in [6,7], are ill-conditioned as a ~0.…”

Section: An Integral Equation For Arbitrary Crack Lengthmentioning

confidence: 99%

“…To study the asymptotic behaviour as a~0, it is convenient to make the change of variables x--,X =x/a, and let f(x; a)= F(X, a). Then (11) Thus, the curves used to interpolate between numerical results in [6,7] should have zero slope at a = 0.…”

Section: An Integral Equation For Arbitrary Crack Lengthmentioning

confidence: 99%

“…Ratwani has reported an extensive numerical and experimental study of (essentially infinite) bonded reinforcements [6,7]. His results are compared with an estimate of G derived from Gu(a) and GL in Section 5, where we also note an analogy between a reinforced plate and one containing a stack of parallel cracks.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A cracked plate repaired by bonded reinforcements

Rose¹

1982

Int J Fract

157

View full text Add to dashboard Cite

A plate with a semi-infinite crack is repaired by having reinforcing sheets bonded to its faces, and is subjected to a uniformly distributed tensile load at right-angles to the crack. It is shown that the crack extension force has a finite value, provided that the reinforced structure can still carry the load if the crack, instead of being semi-infinite, runs across the whole plate, cutting it in half. The case of a plate with a crack of finite length is considered next: the determination of the force is reduced to the solution of a Fredholm integral equation, from which the asymptotic behaviour for short cracks is deduced by the method of successive approximations. These results provide an upper bound to the force for arbitrary crack lengths. A comparison with numerical results suggests that this upper bound is sufficiently close to the actual value to be useful in practice. The residual thermal stress induced by the process of bonding, and the resulting force on a crack, are shown to depend sensitively on the nature of the constraint at the edges of the plate, as well as on the extent of the plate outside the heated region. A number of extensions to less idealized configurations are discussed.

show abstract

Section: An Integral Equation For Arbitrary Crack Lengthmentioning

confidence: 99%

“…Its practical relevance is emphasized by the circumstance that the numerical solution of (l l), and the direct numerical approach used in [6,7], are ill-conditioned as a ~0.…”

Section: An Integral Equation For Arbitrary Crack Lengthmentioning

confidence: 99%

Section: An Integral Equation For Arbitrary Crack Lengthmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A cracked plate repaired by bonded reinforcements

Rose¹

1982

Int J Fract

157

View full text Add to dashboard Cite

show abstract

“…With the increase in computational power, the use of the numerical method, especially the finite elements method, contributed considerably to the comprehension of the mechanical behaviour of defects under patch repair. Among the authors whom used the finite element method for the study of the crack patching, we can quote : Ting et al [7], Callinan et al [8), Jones and Chiu [9], Turaga and Ripudiman [10], Chung and Yang [11], Schubbe and Mall [12] and Bachir et al [13]. The most of the previous works were interested at the cases of central patched cracks.…”

Section: Intoductionmentioning

confidence: 99%

Numerical analysis of the performances of the bonded composite patch for reducing stress concentration and repairing cracks at notch

Achour

Bouiadjra

Sérier

2003

Computational Materials Science

View full text Add to dashboard Cite

In this paper, the finite element analysis is applied to study the performance of the bonded composite reinforcement or repair for reducing stress concentration at a semi-circular lateral notch and repairing cracks emanating from this kind of notch. The effects of the adhesive properties on the variation of the stress intensity factor at the crack tip were highlighted. The obtained results show that the stress concentration factor at the notch tip is reduced about 30% and the maximal reduction of the stress intensity factor is about 80%. The adhesive properties must be optimised in order to increase the performance of the patch repair or reinforcement.

show abstract

Theoretical analysis of crack patching

Rose¹

1988

Bonded Repair of Aircraft Structures

View full text Add to dashboard Cite

Analysis of Cracked, Adhesively Bonded Laminated Structures

Cited by 121 publications

References 9 publications

A cracked plate repaired by bonded reinforcements

A cracked plate repaired by bonded reinforcements

Numerical analysis of the performances of the bonded composite patch for reducing stress concentration and repairing cracks at notch

Theoretical analysis of crack patching

Contact Info

Product

Resources

About