Mechanical strength of adhesively bonded joints using polymeric additive manufacturing

Spaggiari, Andrea; Denti, F

doi:10.1177/0954406219850221

Cited by 38 publications

(34 citation statements)

References 32 publications

(39 reference statements)

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“…FDM is a versatile fabrication method, which allows the design of more complex geometries of the substrates relatively easily, whereas conventional fabrication methods require complex machining of either substrate or moulds [2]. Spaggiari and Denti [11] used single lap joints SLJs) with two adhesives and seven different surface morphologies to study AM bonded joints. They found that the surface morphologies of the adherends had only a small influence on the load capacity and stiffness of the joints.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Characterization of Bonded Joints Made of Additive Manufactured Adherends

Cavalcanti

Queiroz²

2019

ANN_UDJG_AWET

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In this study, the mechanical behaviour of bonded joints made of additive manufactured (AM) adherends was experimentally investigated. Two different methods to increase the mechanical strength of the AM joints bonded with an epoxy adhesive were studied: the effect of modifying the geometry of the adherends along the overlap length (with a sinusoid interface) and the influence of two different print orientations (flatwise and edgewise direction) on the load capacity of 3D-printed parts bonded joints. Single lap-joints (SLJs) were tested for each case studied. Results showed an increase in load capacity of the joints by modifying the geometry of the adherends along the overlap length (the load capacity increased by 62% for flatwise and 36% for edgewise print orientation). Modifying the morphology of the 3D-printed adherends surfaces in the overlap region had a more significant influence on the load capacity of the joints compared to modifying the print orientation of the 3D-printed parts.

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Section: Introductionmentioning

confidence: 99%

Mechanical Characterization of Bonded Joints Made of Additive Manufactured Adherends

Cavalcanti

Queiroz²

2019

ANN_UDJG_AWET

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“…The first approach is used to create a desired pattern able to provide mechanical interlocking and increase the area at the interface between adherend and adhesive. Several authors [ 49 , 50 , 52 , 61 ] used geometrical patterns indented in the adherend thickness to maximize the overlap area, while others [ 23 , 54 ] used patterns protruded in the bondline to seek mechanical interlocking and to alter the strain distribution in the adhesive.…”

Section: Discussionmentioning

confidence: 99%

“…Garcia-Guzman et al [ 52 ] investigated the effect of the structured interfaces seen in the previous works by Spaggiari et al and Cavalcanti et al [ 49 , 50 ] using DCB testing. This experiment was carried out to determine how morphological patterns on the surface of the adherends influence the fracture toughness.…”

Section: Joint Design Strategies For Additive Manufacturingmentioning

confidence: 99%

Review of Tailoring Methods for Joints with Additively Manufactured Adherends and Adhesives

et al. 2020

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This review aims to assess the current modelling and experimental achievements in the design for additive manufacturing of bonded joints, providing a summary of the current state of the art. To limit its scope, the document is focused only on polymeric additive manufacturing processes. As a result, this review paper contains a structured collection of the tailoring methods adopted for additively manufactured adherends and adhesives with the aim of maximizing bonded joint performance. The intent is, setting the state of the art, to produce an overview useful to identify the new opportunities provided by recent progresses in the design for additive manufacturing, additive manufacturing processes and materials’ developments.

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“…However, as this asks for major hardware changes in the 3D printer, the slow speed factor is sometimes overlooked. Among the various limitations of the 3D printing technology, one of the strongest limitation a 3D printer suffers from is its limited build volume, wherein it cannot straightaway print a part greater than the bed volume (Dugbenoo et al , 2018; Kariz et al , 2017; Leicht et al , 2020; Luo et al , 2012; Song et al , 2015; Spaggiari and Denti, 2019; Yap et al , 2020). It is observed that as the dimensions of the object to be printed increases, it starts affecting the stability, distortions, tolerances and the cost of the printed component.…”

Section: Introductionmentioning

confidence: 99%

An overview on joining/welding as post-processing technique to circumvent the build volume limitation of an FDM-3D printer

Tiwary

Arunkumar

Malik³

2021

RPJ

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Purpose Three-dimensional (3D) printing, one of the important technological pillars of Industry 4.0, is changing the landscape of future manufacturing. However, the limited build volume of a commercially available 3D printer is one inherent constraint, which holds its acceptability by the manufacturing business leaders. This paper aims to address the issue by presenting a novel classification of the possible ways by which 3D-printed parts can be joined or welded to achieve a bigger-sized component. Design/methodology/approach A two-step literature review is performed. The first section deals with the past and present research studies related to adhesive bonding, mechanical interlocking, fastening and big area additive manufacturing of 3D printed thermoplastics. In the second section, the literature searches were focused on retrieving details related to the welding of 3D printed parts, specifically related to friction stir welding, friction (spin) welding, microwave and ultrasonic welding. Findings The key findings of this review study comprise the present up-to-date research developments, pros, cons, critical challenges and the future research directions related to each of the joining/welding techniques. After reading this study, a better understanding of how and which joining/welding technique to be applied to obtain a bigger volume 3D printed component will be acquired. Practical implications The study provides a realistic approach for the joining of 3D printed parts made by the fused deposition modeling (FDM) technique. Originality/value This is the first literature review related to joining or welding of FDM-3D printed parts helping the 3D printing fraternity and researchers, thus increasing the acceptability of low-cost FDM printers by the manufacturing business leaders.

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Mechanical strength of adhesively bonded joints using polymeric additive manufacturing

Cited by 38 publications

References 32 publications

Mechanical Characterization of Bonded Joints Made of Additive Manufactured Adherends

Mechanical Characterization of Bonded Joints Made of Additive Manufactured Adherends

Review of Tailoring Methods for Joints with Additively Manufactured Adherends and Adhesives

An overview on joining/welding as post-processing technique to circumvent the build volume limitation of an FDM-3D printer

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