Ultrasonic welding is a promising joining technique for thermoplastic composite parts. On the way towards upscaling and industrialisation of this technology, it crucial to understanding how affected by manufacturing tolerances. The objective research presented in paper was investigate influence that misaligned adherends have on static ultrasonic composites. Different angles were created changin...

Thick adhesive layers have potential structural application in ship construction for the joining of a composite superstructure to steel hull. The purpose this study is develop mechanics model fracture such lap joints under shear loading. Modified Thick-Adherend-Shear-Test (TAST) specimens made from MMA-based and adherents are designed fabricated. Crack initiation growth these measured monitored...

Introduction Composite materials are weak normal to the plane of the laminate due to a lack of through-thickness reinforcement, with strength dictated by the brittle epoxy matrix. Therefore it is important to evaluate the through-thickness load transfer in composite bonded joints because of their discontinuous nature to improve confidence in the join and inform more efficient joint designs. A d...

The bond durability of composite-type resin cement was evaluated by means of cyclic impact tests using three different loads. In terms of experimental setup, a casting alloy, 12% Au-Pd-Ag, was used as the adherend and bonded to a cast block using a composite-type cement (Bistite II). A shear load--using plungers of three different weights at 100, 110, and 120 g--was dropped from a 3-mm height o...

The bonding performance between adherend and adhesive depends on two main factors including the surface roughness of bondline thickness adhesive. This paper investigated how substrate influence epoxy joints A36 mild steel substrates using single lap shear (SLS) tests. evaluated performances included strength maximum strain which were fabricated with four different roughnesses three thicknesses ...