Experimental Study of Single-Lap, Hybrid Joints, Made of 3D Printed Polymer and Aluminium Adherends

Abstract

This paper presents the results of an experimental study into single-lap joints. One part of the joint was made as a 3D printed polymer and had cylindrical tenons, while the other part was made of an aluminium flat bar having mortises whose diameter and distribution corresponded to the polymer tenons. In addition to the mechanical joint, a layer of double-sided VHB (Very High Bond) adhesive tape was also placed in the lap, thus creating a hybrid joint. In total, 80 specimens were made, which were divided into four groups: A—specimens with one tenon of different diameters, B—specimens with different number of tenons of the same diameter, C—specimens characterised by multi-stage operation and R—reference specimens, connected only by double-sided adhesive tape. The joints were subjected to uniaxial tensile tests. The force–displacement characteristics obtained and the energy required, up to the point of the failure of the joints, have been analysed in this paper. The four and six-stage joints designed can significantly increase the safety of the structures in which they will be used.

Influence of Acrylonitrile Content on the Adhesive Properties of Water-Based Acrylic Pressure-Sensitive Adhesives

“…Samples N2 and N4 showed an increase of G of almost 2.5 and 5 times, respectively, with regard to E0. The curves show the typical behavior of a dynamic shear test [40], with a linear initial zone, which allows to determine the elastic modulus, a maximum stress that defines the strength of the adhesive related to its internal cohesion, and a deformation up to failure that is a measure of its ductility. The area under these curves determines their strain energy or toughness.…”

Comparative analysis of thermoplastic and thermoset adhesives performance and the influence on failure analysis in jointed elium‐based composite structures

“…In addition, delaminations may occur in the hole wall and near the hole, resulting from the drilling process. 15,16 Adhesive bonding is another common technique that provides a more uniform load transfer between components and minimizes stress concentrations at the joint. However, their use in structural applications is limited because the brittle and brittle structure of adhesives used in bonded joints, which offer improved fatigue life, causes catastrophic failure with low deformations of the structure at critical loadings exceeding the safe stress value.…”

Experimental investigation of Al5052‐H32/PETG hybrid clinched joints

“…Only some studies on the connection of metals and polymers have been carried out by researchers. [42][43][44]47 Lambiase et al 43 not only studied the effect of diverse instruments on the performance of metal-polymer hybrid structures but also explored the effect of pre-heating time on the joinability of hybrid structures. 42,44 Yet, the type of polymer studied contains only three common polymers, including polystyrene (PS), poly(methyl methacrylate) (PMMA), and polycarbonate (PC).…”

“…42,44 Yet, the type of polymer studied contains only three common polymers, including polystyrene (PS), poly(methyl methacrylate) (PMMA), and polycarbonate (PC). In addition, Golewski et al 47 investigated the connection characteristics of 3D printed polymer Z-ABS and aluminum alloy sheets by hybrid joining techniques of mechanical fastening and bonding. The application range of MCT in polymer materials needs to be further expanded.…”

“…However, the literature on metal‐to‐polymer connections is very scarce. Only some studies on the connection of metals and polymers have been carried out by researchers 42–44,47 . Lambiase et al 43 not only studied the effect of diverse instruments on the performance of metal‐polymer hybrid structures but also explored the effect of pre‐heating time on the joinability of hybrid structures 42,44 .…”