Mechanical properties of Hysol EA-9394 structural adhesive

Guess, T.R.; Reedy, E.D.; Stavig, Mark E.

doi:10.2172/32591

Cited by 21 publications

(30 citation statements)

References 4 publications

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“…"However, for ourdiscussions here,this solutionis adequate. In a series of papers, MetZinger et al [197][198][199][200][201][202][203] have combined state-of-the-art finite element analysis (FEA) techniques with experimental vdldation to examine idealized tubular lap joints that approximately represent the root connections in wind turbine blades. The joints that they analyzed, for the most part, are metallic (aluminum or steel) cylinders bonded to a fiberglass cylinder.…”

Section: Tubular Lap Jointsmentioning

confidence: 99%

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On the Fatigue Analysis of Wind Turbines

Sutherland¹

1999

169

146

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Section: Tubular Lap Jointsmentioning

confidence: 99%

“…see Guess et al [199], or use proprietary information obtained directly from the manufacturer. In most cases, the designer is forced to take a best practice approach and use supplier specifications and recommendations for the design and manufacturing of the complex joint structures.…”

Section: Adhesivesmentioning

confidence: 99%

On the Fatigue Analysis of Wind Turbines

Sutherland¹

1999

169

146

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“…The subscripts r, a, and t in Table 2 refer to the radial, axial, and tangential directions, respectively. The material property values used for the adhesive and the composite were taken from [2] and [3]. Generic values were used for the steel.…”

Section: Monotonic Test Resultsmentioning

confidence: 99%

How geometric details can affect the strength of adhesive lap joints

Metzinger

Guess

1997

35th Aerospace Sciences Meeting and Exhibit

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SEP 2 6 BY6 O S T IABSTRACT The durability of adhesively bonded joints -when utilized as blade attachments -has a significant impact on the performance of wind turbines. Accordingly, there is interest in determining how geometric details affect the strength of these joints. Finite element analyses were performed to aid in the selection of t h e e composite-to-metal joint geometries for compressive axial testing. Both monotonic and low-cycle fatigue tests were conducted. Analysis and testing of these joints provide insight into the effects of adding extra adhesive to the end of the bond or tapering the metal adherend. The issue of whether the relative performance of different joints in monotonic tests can be used to predict the relative fatigue strength of these joints is also addressed.

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“…In particular, the relationship between the singular stress fields associated with linear elastic, power law hardening, and perfectly plastic material response is considered. This paper presents results for a butt joint tested in a complementary experimental study [7]. This provides a focus for the work, although the reported results are interpreted in a broader sense.…”

Section: Introductionmentioning

confidence: 99%

“…Note, however, that although this is a useful idealization, the adhesive actually responds in a much more complex way. Stress relaxation test data suggest that the adhesive actually displays nonlinear, stress dependent viscoelasticity, and yielding is thought to be a manifestation of this constitutive behavior [7]. Table 1 summarizes the measured butt joint strength data.…”

Section: Introductionmentioning

confidence: 99%

Interface corner stress states: plasticity effects

Reedy

Guess

1996

Int J Fract

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When a butt joint fails, failure often initiates in the region where the interface intersects the stress-free edge. Asymptotic solutions for the stress field found at this type of interface comer are presented for an idealized butt joint with rigid adherends and a thin, essentially semi-infinite, adhesive bond. Linear elastic, power law hardening, and perfectly plastic adhesive models are considered. A stress singularity of type a ,--K r ~ (~5 < O) exists when the adhesive is either linear elastic or power law hardening. The impact of material properties on the order of the stress singularity ~ and the effect of load level and bond thickness on the value of the interface comer stress intensity factor K are detailed. Slip theory is used to determined the asymptotic, interface comer stress field for a perfectly plastic adhesive. This solution indicates that there is a high level of hydrostatic tension, equal to 1.5 av, in the yielded material along the interface. The three asymptotic solutions are used to construct interface normal stress distributions that closely approximate full, finite element results for an idealization butt joint when small scale yielding conditions apply.

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Mechanical properties of Hysol EA-9394 structural adhesive

Abstract: Portions of this document may be illegible in electronic image products. Images are produced from the best available original document.

Cited by 21 publications

References 4 publications

On the Fatigue Analysis of Wind Turbines

On the Fatigue Analysis of Wind Turbines

How geometric details can affect the strength of adhesive lap joints

Interface corner stress states: plasticity effects

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