This article shows how changing 3D printing parameters and using bio-inspired lattice chambers can engineer soft pneumatic actuators (SPAs) with different behaviors in terms of controlling tip deflection force the same input air pressure. Fused deposition modeling (FDM) is employed to print varioShore thermoplastic polyurethane (TPU) materials a foaming agent. The effects material flow nozzle t...

A soft lithographic method is described for casting functional thermoplastic devices with microscale features without the need for specialized tools or equipment. In the thermoplastic soft lithography process, termed solvent casting, low temperature supersaturated solutions of thermoplastic are poured over solvent permeable PDMS molds which allow omnidirectional solvent removal as they template...

sandwich panel with central core honeycomb aluminum as one of the main shielding structures because of their high strength-to-weight ratio and improved energy absorption capacity, has been attracted the attention of many researchers and practitioners in recent years. this paper initiates and presents a new type of central core honeycomb formed by hydroforming process. the study is augmented by ...

• A finite element-based approach to optimisation of honeycomb-type structures under impact loading for helmet applications is presented. novel elastomeric pre-buckled honeycomb structure optimised minimise peak linear acceleration and head injury criterion . Superior single stabilised multi-impact behaviour observed fabricated liner acceleration. Finite element simulation was used analyse the ...

Objective This study investigated the wear resistance of injection-molded thermoplastic denture base resins using nanoindentation instrument. Materials and methods Six injection-molded thermoplastic denture base resins (two polyamides, two polyesters, one polycarbonate, one polymethylmethacrylate [PMMA]) and a PMMA conventional heat-polymerized denture-based polymer control were tested. Elastic...

This study aimed to evaluate the tensile and transverse bond strength of chairside reline resins (Tokuyama Rebase II, Mild Rebaron LC) to a thermoplastic acrylic resin (Acrytone) used for non metal clasp denture. The results were compared with those of a conventional heat polymerized acrylic resin (Paladent 20) and a thermoplastic polyamide resin (Biotone). The failure sites were examined by sc...

PURPOSE The aim of this study was to compare the color stability, water sorption and cytotoxicity of thermoplastic acrylic resin for the non-metal clasp dentures to those of thermoplastic polyamide and conventional heat-polymerized denture base resins. MATERIALS AND METHODS Three types of denture base resin, which are conventional heat-polymerized acrylic resin (Paladent 20), thermoplastic po...

Auxetic cellular structures offer improvements in some mechanical properties due to their negative Poisson’s ratio response when loaded. This study investigates and compares the effect of using multiple materials within three well researched geometries, two auxetic: re-entrant anti- tetrachiral, one non-auxetic: hexagonal honeycomb. For each geometry, different material configurations were used...