The influence of residual stresses on the mechanical and thermal properties of injection moulded ABS copolymer

Akay, M.; Ozden, S.

doi:10.1007/bf00349880

Cited by 44 publications

(28 citation statements)

References 13 publications

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“…ABS-based 3D printers enables a rapid prototyping and iterative development approach while ABS itself is suitable for molding many elastomers because it is generally chemically inert 14,15 . However, ABS plastic has a heat deflection temperature of approximately 90–100 °C, which limits the maximum work temperature at approximately 70 °C 16 . This means that higher curing temperatures cannot be achieved using ABS molds.…”

Section: Discussionmentioning

confidence: 99%

Rapid and Low-cost Prototyping of Medical Devices Using 3D Printed Molds for Liquid Injection Molding

Chung

Heller

Etemadi

et al. 2014

JoVE

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Biologically inert elastomers such as silicone are favorable materials for medical device fabrication, but forming and curing these elastomers using traditional liquid injection molding processes can be an expensive process due to tooling and equipment costs. As a result, it has traditionally been impractical to use liquid injection molding for low-cost, rapid prototyping applications. We have devised a method for rapid and low-cost production of liquid elastomer injection molded devices that utilizes fused deposition modeling 3D printers for mold design and a modified desiccator as an injection system. Low costs and rapid turnaround time in this technique lower the barrier to iteratively designing and prototyping complex elastomer devices. Furthermore, CAD models developed in this process can be later adapted for metal mold tooling design, enabling an easy transition to a traditional injection molding process. We have used this technique to manufacture intravaginal probes involving complex geometries, as well as overmolding over metal parts, using tools commonly available within an academic research laboratory. However, this technique can be easily adapted to create liquid injection molded devices for many other applications.

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Section: Discussionmentioning

confidence: 99%

Rapid and Low-cost Prototyping of Medical Devices Using 3D Printed Molds for Liquid Injection Molding

Chung

Heller

Etemadi

et al. 2014

JoVE

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“…where (3) and (4) F is chosen as a fifth order polynomial in order to satisfy the governing differential equation, substituting it into the equilibrium gives (6) The boundary conditions are written as (7) The stress components are obtained from the stress function F:…”

Section: Elastic Analysismentioning

confidence: 99%

An Elastic-Plastic Stress Analysis of Simply Supported Thermoplastic Composite Beams Under a Transverse Uniformly Distributed Load

Sayman

Küçük

Esendemir

et al. 2002

Journal of Reinforced Plastics and Composites

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An analytical elastic-plastic stress analysis is carried out on thermoplastic composite beams supported from two ends under transverse uniformly distributed load. The composite beams consist of woven steel fiber and thermoplastic matrix. The material is assumed to be perfectly plastic for the elastic-plastic solution. The intensity of the uniform force is chosen at a small value; therefore the normal stress components of σ y is neglected during the elastic-plastic solution. The expansion of the plastic region and the residual stress component of σ x are determined for 0°, 15°, 30°and 45°orientation angles. Plastic yielding occurs first 0°and 45°orientation angles on the lower and upper surfaces of the beam at the same distances from the ends. However; it starts first at the lower surface for 15°, 30°orientation angles. The intensity of the residual stress component of σ x is found to be maximum at the lower and upper surfaces; whereas the intensity of residual stress component τ xy is maximum on or around the x axis of the beam.

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“…As the value of the orientation angle decreases the length of the beam increases. Akay and Ö zden [8] investigated the influence of residual stresses in carbon fiber-thermoplastic matrix laminates.…”

Section: Introductionmentioning

confidence: 99%

The effect of ply number, orientation angle and bonding type on residual stresses of woven steel fiber reinforced thermoplastic laminated composite plates subjected to transverse uniform load

Karakuzu

Aslan

Okutan

2004

Composites Science and Technology

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The influence of residual stresses on the mechanical and thermal properties of injection moulded ABS copolymer

Cited by 44 publications

References 13 publications

Rapid and Low-cost Prototyping of Medical Devices Using 3D Printed Molds for Liquid Injection Molding

Rapid and Low-cost Prototyping of Medical Devices Using 3D Printed Molds for Liquid Injection Molding

An Elastic-Plastic Stress Analysis of Simply Supported Thermoplastic Composite Beams Under a Transverse Uniformly Distributed Load

The effect of ply number, orientation angle and bonding type on residual stresses of woven steel fiber reinforced thermoplastic laminated composite plates subjected to transverse uniform load

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