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Showing 1 to 8 of 8 for “"crack path selection"”.
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Crack Path Selection in Adhesively Bonded Joints
… is to obtain an overall understanding of the crack path selection in adhesively bonded joints. Using Dow Chemical epoxy resin DER 331® with various levels of rubber concentration as an adhesive, and aluminum 6061-T6 alloy with different surface pretreatments as the adherends, both symmetric …
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Crack path selection in microstructurally tailored inhomogeneous polymers
… that can help us experimentally study crack path selection problems. The model material which we are using is a polyethylene co-polymer, ECO, whose photosensitive behavior allows alterations in its mechanical properties when subjected to ultraviolet (UV) irradiation. It is seen that ECO …
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Crack path selection and shear toughening effects due to mixed mode loading and varied surface properties in beam-like adhesively bonded joints
… environmental challenges. In these situations, cracks can start within the adhesive layer or debonds can initiate near an interface. The paths taken by propagating cracks can affect the resistance to failure and the subsequent service lives of the bonded structures. The behavior of propagating …
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Mathematical modeling of adhesive layer cracks utilizing integral equations
Within recent years, Crack analysis in adhesive layers has become a topic of interest for many researchers. A common model which is used incorporates a 3-region elasticity problem consisting of only 2 materials, the adhesive layer bounded by 2 layers of a stiffer elastic substrate. Cracks have been …
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Mechanism of Fatigue Crack Growth at Polymer/metal Interface
Fatigue crack growth along an Al/epoxy interface was examined under mixed-mode conditions. To provide different combinations of Mode-I and Mode-II conditions, a flexural peel (FP) technique was developed, which proved to be particularly useful for subcritical crack growth studies. Using this …
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Performance Evaluation and Durability Studies of Adhesive Bonds
… the adhesive fracture resistance and crack path selection in adhesive joints containing patterns of discreet localized weak interfaces created using physical vapor deposition of copper. In a DCB specimen tested under mode-I conditions, fracture energy within the patterned regions …
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Durability of Polyimide Adhesives and Their Bonded Joints for High Temperature Applications
… the past. Our current understanding is that the crack path selection during the failure process plays a significant role in explaining this anomalous behavior. Finally, failure envelopes were generated for the titanium/FM-5 bonded system, both prior to and following thermal aging. These envelopes …
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Factors Affecting the Structural Integrity of Wood-Based Composites: Elevated Temperature and Adhesive Bonding
… with machined grain angles designed to funnel cracks to the adhesive interface. This method of sample preparation is difficult and time-consuming for certain wood species. In this work, a practical and efficient method is developed to characterize adhesive fracture energy of adhesively bonded …