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Showing 1 to 13 of 13 for “"interlayer adhesion"”.
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Quantitative and consistent tests for interlayer adhesion in laminated glass
… on two different types of samples: low and high adhesion. Stress and fracture analysis was conducted using the finite element method. The numerical analysis was first validated against simple strength of materials analyses and the measured load deflection response. The numerical analysis then …
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Non-isothermal non-Newtonian flow and interlayer adhesion in Large Area Additive Manufacturing polymer composite deposition.
… layers which provides temperature along the interlayer bond line with respect to time. Infrared heating of printed beads, an addition to the current deposition process, is also modeled to determine the increase in temperature along the bond line for LAAM printing. Post deposition smooth and …
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Additive Manufacturing of Commercial Polypropylene Grades of Similar Molecular Weight and Molecular Weight Distribution
… to enable longer re-entanglement times for interlayer adhesion. While the topic of formulating PP blends/composites with other materials to improve the printability has been investigated, variation in properties of commercial PP grades, of similar molecular weight (MW) and molecular weight …
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Study of layer orientation on the fracture behavior of two additively manufactured thermoset resins, A
… PM-EM828 layers are on a similar level to their interlayer adhesion zones, suggesting why there may be little print orientation dependence. Conversely, the DA-3 layers are less brittle than their interlayer adhesion zones, and so the orientation of the adhesion zones with respect to the print …
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Rheological and Thermal Insights into Solidification Dynamics in Extrusion-Based Additive Manufacturing of Polymer Composites
… favors shape retention, it hinders interlayer chain diffusion, compromising interlayer adhesion and mechanical integrity. Achieving adequate EB-AM processing requires understanding solidification to ensure structural fidelity without hindering interlayer adhesion. This balance is …
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Material Extrusion based Additive Manufacturing of Semicrystalline Polymers: Correlating Rheology with Print Properties
… in the crystallization process impact the z-axis adhesion and residual stress state, which directly affect mechanical properties and warpage in the printed parts. The impact of blend composition on polymer chain diffusion, crystallization profiles, and print properties resulting from the repeated …
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Polylactic Acid based Blends and Composites for Material Extrusion 3D Printing: Formulation, Characterization, and Processing
… voids, resulting in a substantial improvement in interlayer adhesion and tensile ductility. In the second part of this research, a simple and sustainable hydrophobic modification of cellulose nanocrystals (CNCs) using ECO was investigated to improve their compatibility with PLA. After …
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Utilising a water-based spraying method to improve 3D printed concrete
… nature of the printed material. The weak interlayer bond strength between successively deposited filaments, primarily caused by surface moisture loss during the printing pass time, creates preferential failure planes and compromises the integrity of 3D printed concrete (3DPC). This issue …
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The Influence of Time-Dependent Rheology on the Multiple Scales of 3D Printing with Cementitious Materials
… scale, mechanical testing reveals that the interlayer adhesion of the full structure is reduced after the PQAT, reiterating the importance of filament-level quality control. This reduction in load-bearing capacity after the PQAT is driven by decreased load-bearing area which is the …
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Process/Structure/Property Relationships of Semi-Crystalline Polymers in Material Extrusion Additive Manufacturing
… during the MEX process can adversely affects the interlayer adhesion. In the third project, a 3D heat transfer model was developed to simulate and understand the thermal history of MEX feedstock material during printing, this model is then thoroughly validated against the experimental IR …
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Characterization and patterned polymer films from a novel self-assembly process
… the oppositely charged polymers promote strong interlayer adhesion and a uniform and linear multilayer deposition process. UV/Vis absorbance, contact angle, and ellipsometry measurements revealed that in all cases the bilayer deposition process was linear and highly producible from layer to …
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Exploring Multiple Hydrogen Bonding and Ionic Bonding in the Design of Supramolecular Polymers
… processing and reinforced bonding between the interlayers, which contributed to the remarkable strength, elasticity, toughness, and interlayer adhesion of the printed parts.
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Physics Based Modeling and Characterization of Filament Extrusion Additive Manufacturing
… the variety of applications. Additionally, poor interlayer adhesion results in anisotropic mechanical properties which can lead to failure, an issue not often observed in traditional manufacturing techniques. A review of the current state of the art research in the field of FFF, focusing on the …