HIGH THROUGHPUT BLOOD PUMP MANUFACTURING WITH VACUUM FORMING PROCESS

With the advantage of high adaptability, Miura-origami structure with curvature shows various engineering applications such as a sandwich between two stiff facings with curvature requirements and structural support to form a circular tube. In this research, a forming method of polymer circular tube with single-curved surface origami expressed by five parameters was established and its corresponding theory was solved considering forming rationality in actual manufacturing. The components of circular tube were fabricated by the vacuum forming process and then spliced together. We conducted numerical simulation to analyze the structural performance of the tube with five parameters and shown that these parameters have a great influence on energy absorbed performance. Finally, a male mold of a part with Arc Miura-origami structure was designed and fabricated. The parts with Arc Miura-origami were manufactured using vacuum forming process and then spliced and bonded together into a two-layer tube. This research may provide a method to design and fabricate Miura-origami structure with high efficiency and quality.

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Vacuum Forming Refrigerator Inner Liner Structural Optimization

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.291-294.1069 ◽

2011 ◽

Vol 291-294 ◽

pp. 1069-1073

Author(s):

Wen Bin Su ◽

Xiang Bing Sun ◽

Tao Li ◽

Bao Jian Liu

Keyword(s):

Numerical Simulation ◽

Structural Optimization ◽

Structural Parameters ◽

Forming Process ◽

Significance Level ◽

Orthogonal Experiments ◽

Combination Scheme ◽

Vacuum Forming ◽

Validation Experiment

Thickness thinning is the principal quality problem in the vacuum forming process of the refrigerator inner liner. In this paper, the structural parameters of refrigerator inner liner were analyzed based on orthogonal experiments and numerical simulation. Optimized structural parameters combination scheme and the significance level of structural parameters to thickness were obtained by analyzing the results of orthogonal experiments. Validation experiment results shown that the quality of refrigerator inner liner based on the optimized structural parameters combination scheme improved effectively.

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Experimental and numerical investigations of the vacuum-forming process

Polymer Engineering & Science ◽

10.1002/pen.760321613 ◽

1992 ◽

Vol 32 (16) ◽

pp. 1163-1173 ◽

Cited By ~ 21

Author(s):

C. A. Taylor ◽

H. G. Delorenzi ◽

D. O. Kazmer

Keyword(s):

Forming Process ◽

Numerical Investigations ◽

Vacuum Forming

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Innovation in Aircraft Cabin Interior Panels. Part II: Technical Assessment on Replacing Glass Fiber with Thermoplastic Polymers and Panels Fabricated Using Vacuum Forming Process

Polymers ◽

10.3390/polym13193258 ◽

2021 ◽

Vol 13 (19) ◽

pp. 3258

Author(s):

Edgar Adrián Franco-Urquiza ◽

Perla Itzel Alcántara Llanas ◽

Victoria Rentería-Rodríguez ◽

Raúl Samir Saleme ◽

Rodrigo Ramírez Aguilar ◽

...

Keyword(s):

Polyurethane Foams ◽

Future Research ◽

Sandwich Composites ◽

Thermoplastic Polymers ◽

Forming Process ◽

Molding Process ◽

Aircraft Cabin ◽

Vacuum Forming ◽

Structural Applications ◽

Cabin Interior

The manufacturing process of the aircraft cabin interior panels is expensive and time-consuming, and the resulting panel requires rework due to damages that occurred during their fabrication. The aircraft interior panels must meet structural requirements; hence sandwich composites of a honeycomb core covered with two layers of pre-impregnated fiberglass skin are used. Flat sandwich composites are transformed into panels with complex shapes or geometries using the compression molding process, leading to advanced manufacturing challenges. Some aircraft interior panels are required for non-structural applications; hence sandwich composites can be substituted by cheaper alternative materials and transformed using disruptive manufacturing techniques. This paper evaluates the feasibility of replacing the honeycomb and fiberglass skin layers core with rigid polyurethane foams and thermoplastic polymers. The results show that the structural composites have higher mechanical performances than the proposed sandwich composites, but they are compatible with non-structural applications. Sandwich composite fabrication using the vacuum forming process is feasible for developing non-structural panels. This manufacturing technique is fast, easy, economical, and ecological as it uses recyclable materials. The vacuum forming also covers the entire panel, thus eliminating tapestries, paints, or finishes to the aircraft interior panels. The conclusion of the article describes the focus of future research.

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Numerical Simulation Techniques for Hollow Vacuum Forming of Double-Layered Plastic Sheets

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.154-155.68 ◽

2010 ◽

Vol 154-155 ◽

pp. 68-73

Author(s):

Bin Gao ◽

Bai Zhong Wu

Keyword(s):

Numerical Simulation ◽

Theoretical Calculation ◽

Temperature Variation ◽

New Products ◽

Simulation Method ◽

Simulation Software ◽

New Materials ◽

Forming Process ◽

Simulation Techniques ◽

Vacuum Forming

Products made from double-layered hollow vacuum forming are widely used for their various advantages. The hollow vacuum forming process has been studied in this paper. Numerical simulation method for the hollow vacuum forming process of double-layered plastic sheets has been introduced by the simulation software Polyflow, which is suitable for viscoelasticity fluid bodies. This method can vividly and intuitively estimate the thickness, temperature variation and distribution in the double-layered vacuum forming processes. Based on this method, reliably theoretical calculation data can be provided to design the reasonable vacuum forming process for double-layered vacuum forming of new materials or new products. The proposed method has been verified to be applicable and effective by prototype fabrications.

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Development of Reinforced Structure Designed Composite Pavement

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.887-888.793 ◽

2014 ◽

Vol 887-888 ◽

pp. 793-796

Author(s):

Zhong Ming Hou ◽

Ling Duan ◽

Kai Yao ◽

Xiao Wen Zhao

Keyword(s):

Composite Material ◽

High Strength ◽

Resin Matrix ◽

Forming Process ◽

Specific Strength ◽

Road Pavement ◽

Vacuum Forming ◽

Resin Matrix Composite ◽

Strength And Stiffness ◽

Surface Plate

For the problems such as layering and splitting of traditional sandwich structure composite, a resin matrix composite with lattice and interface reinforced structure has been designed, and using vacuum forming process was developed in this paper. The composite material has high specific strength and stiffness. On this basis, a road pavement developed by this composite material used in engineer urgent was designed. This composite pavement with characters of light weight, high strength and good toughness, and its surface plate was hard, wear-resistant and non-slip. The connection between the pavements was designed for quick assembling, which could make the pavement assemble operation was simple, fast and reliable.

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Design and Manufacture of Vacuum Forming Moulds

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.264-265.1500 ◽

2011 ◽

Vol 264-265 ◽

pp. 1500-1505

Author(s):

Sumsun Naher ◽

Paul Derham

Keyword(s):

Proper Time ◽

Air Pressure ◽

Width Ratio ◽

Forming Process ◽

Cycle Times ◽

Vacuum Forming ◽

Draft Angle ◽

Design And Manufacture

This paper presents an investigation of the positive vacuum forming process. Previous research has indicated requirements of a draft angle of at least two to five degree and a depth to width ratio of not greater than 1:1. For specific formed geometry that required smaller draft angles and greater draw depths these limitations may make the positive vacuum forming process not applicable. The overall aim of this work was to allow the process to become more versatile. This work focused on three prototype moulds which were designed, manufactured, tested and analysed with a view to over come the present process limitations. Moulds were made of wood with a size of 68 x 68 x 75mm. Air holes of 1 and 10mm diameter were drilled in to these moulds in different positions. Polypropylene terephthalate glycol (PETG) materials was used to make the final product via the vacuum process. To release the product from the mould a constant 8bar pressure was applied. Proper time to make the final products and the quality of the final product were investigated. It was found that moulds with air holes opening in all surfaces resulted in shorter cycle times, lower air pressure and better quality of formed parts. It was also found in this work that a zero draft angle and as well as 1:1.1 draw depth was possible to achieve in the vacuum forming process.

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Design and simulation of components of vacuum forming machine using household vacuum cleaner

Journal of Engineering Issues and Solutions ◽

10.3126/joeis.v1i1.36834 ◽

2021 ◽

Vol 1 (1) ◽

pp. 138-157

Author(s):

Navaraj Adhikari ◽

Nirajan Sharma Timilsina ◽

Sanskar Gautam ◽

Snehraj Kaphle ◽

Pratisthit Lal Shrestha

Keyword(s):

Human Life ◽

Forming Process ◽

Load Bearing Capacity ◽

Vacuum Cleaner ◽

Plastic Sheet ◽

Nichrome Wire ◽

Spiral Path ◽

Household Products ◽

Vacuum Forming ◽

Thermoforming Process

Plastic products ranging from toothbrushes to smartphones are an inseparable commodity in daily human life and their impact cannot be underestimated. This paper aims to design and simulate the vacuum forming process using readily available materials in context of Nepal. Vacuum forming process is a thermoforming process where the heated plastic sheet derives the shape of the mold through the application of vacuum and is used to make packaging products and other household products. Simulations were done to find out the optimum distance between the plastic sheet and the heater, arrangement of the wire in the heater, load bearing capacity of the design and the flow of vacuum in the arrangement. Nichrome wire coiled as heater coil is used as the heating material and laid in a spiral path with the plastic sheet 35mm below provided the best heating results and 1800W vacuum cleaner provided the necessary pressure of 85-90kPa and velocities of 100- 115m/s while the steel posts provided adequate strength.

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