Toughness amplification in copper/epoxy joints through pulsed laser micro-machined interface heterogeneities

Hernandez, Edwin A. Peraza; Alfano, Marco; Pulungan, Ditho Ardiansyah; Lubineau, Gilles

doi:10.1038/s41598-017-16471-6

Cited by 21 publications

(13 citation statements)

References 35 publications

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“…Joining two dissimilar materials through a patterned interface is indeed a well-known strategy to improve the failure resistance of bimaterial attachments, and numerous works have investigated this topic considering engineering materials ( Cordisco et al, 2012 ; Caimmi and Pavan, 2009 ; Hernandez et al, 2017 ; Kim et al, 2010 ; Yao and Qu, 2002 ). In this context, one interesting research question is about the relationship between the interface geometrical properties and the corresponding interfacial fracture toughness.…”

Section: How To Link Microstructure and Composition To Mechanical Properties?mentioning

confidence: 99%

Joining soft tissues to bone: Insights from modeling and simulations

Ruffoni

2021

Bone Reports

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Entheses are complex multi-tissue regions of the musculoskeletal system serving the challenging task of connecting highly dissimilar materials such as the compliant tendon to the much stiffer bone, over a very small region. The first aim of this review is to highlight mathematical and computational models that have been developed to investigate the many attachment strategies present at entheses at different length scales. Entheses are also relevant in the medical context due to the high prevalence of orthopedic injuries requiring the reattachment of tendons or ligaments to bone, which are associated with a rather poor long-term clinical outcome. The second aim of the review is to report on the computational works analyzing the whole tendon to bone complex as well as targeting orthopedic relevant issues. Modeling approaches have provided important insights on anchoring mechanisms and surgical repair strategies, that would not have been revealed with experiments alone. We intend to demonstrate the necessity of including, in future models, an enriched description of enthesis biomechanical behavior in order to unravel additional mechanical cues underlying the development, the functioning and the maintaining of such a complex biological interface as well as to enhance the development of novel biomimetic adhesive, attachment procedures or tissue engineered implants.

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Section: How To Link Microstructure and Composition To Mechanical Properties?mentioning

confidence: 99%

Joining soft tissues to bone: Insights from modeling and simulations

Ruffoni

2021

Bone Reports

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“…Indeed, current lasers are provided with high-precision beam positioning systems, which ensure the ability to treat the target surfaces selectively, and with fairly accurate geometrical control. 32…”

Section: T-jointsmentioning

confidence: 99%

Experimental analysis of steel joints bonded with automotive grade hot setting structural adhesives

Morano

Musiari

Moroni

et al. 2018

Proceedings of the Institution of Mechanical Engineers, Part L:

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Recent trends in car body manufacturing indicate that the use of a consistent mix of lightweight materials in conjunction with adhesive bonding, not only allows substantial weight reduction, but can also drive down costs and potentially enables more intelligent designs. Yet, presently, it is highly desirable that the introduction of structural adhesives is made with minimum impact on the automotive body framing systems. Adhesives commonly deployed in car body production (i.e. body-in-white) are applied without any prior surface preparation and final curing is carried out during the baking process that follows the electrophoretic coating. Several structural adhesives have been tailored to the conditions dictated by the automotive production process. The aim of this work is to assess the mechanical properties of adhesive joints bonded with automotive grade hot setting epoxy adhesives employed for the assembly of frame and panels. Single-lap and T-joints were fabricated and adhesive hardening was carried out following the typical curing cycle employed in the process chain of automobile production. The resulting mechanical properties were assessed before and after exposure to a standard accelerated thermal cycling under controlled humidity. The evaluation of the mechanical behavior was done through a combination of testing and analysis, which included the assessment of fracture surfaces using optical microscopy to resolve the locus of failure.

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“…Pulsed laser irradiation has recently become useful in surface treatment of CFRP because it improves bonding. Hernandez and Tao [3,5] pointed out that, indeed, pulsed laser irradiation modifies both the surface chemistry and the morphology of adherend surfaces. Although several studies [6][7][8] showed that UV laser treatment increased the secondary bonding strength of CFRP composites, Tao et al [2] confirmed that pulsed CO2 laser irradiation improved adhesion while offering faster-processing speed, which is essential during the construction of large structures.…”

Section: Introductionmentioning

confidence: 99%