scholarly journals Mechanical Design and Performance Analyses of a Rubber-Based Peristaltic Micro-Dosing Pump

Actuators ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 198
Author(s):  
Thomas Zehetbauer ◽  
Andreas Plöckinger ◽  
Carina Emminger ◽  
Umut D. Çakmak
Keyword(s):  
Fluid Transport ◽  
Mechanical Design ◽  
Material Selection ◽  
Selection Process ◽  
Thermoplastic Elastomer ◽  
Peristaltic Pump ◽  
Transport Channel ◽  
Soft Layer ◽  
Pump System ◽  
Pump Design

Low pressure fluid transport (1) applications often require low and precise volumetric flow rates (2) including low leakage to reduce additional costly and complex sensors. A peristaltic pump design (3) was realized, with the fluid’s flexible transport channel formed by a solid cavity and a wobbling plate comprising a rigid and a soft layer (4). In operation, the wobbling plate is driven externally by an electric motor, hence, the soft layer is contracted and unloaded (5) during pump-cycles transporting fluid from low to high pressure sides. A thorough characterization of the pump system is required to design and dimension the components of the peristaltic pump. To capture all these parameters and their dependencies on various operation-states, often complex and long-lasting dynamic 3D FE-simulations are required. We present, here, a holistic design methodology (6) including analytical as well as numerical calculations, and experimental validations for a peristaltic pump with certain specifications of flow-rate range, maximum pressures, and temperatures. An experimental material selection process is established and material data of candidate materials (7) (liquid silicone rubber, acrylonitrile rubber, thermoplastic-elastomer) are directly applied to predict the required drive torque. For the prediction, a semi-physical, analytical model was derived and validated by characterizing the pump prototype.

Material Selection for Prototype Design and Production

2020 ◽  
Vol 994 ◽  
pp. 304-311
Author(s):  
Michal Šašala ◽  
Lukáš Hrivniak ◽  
Jozef Svetlík
Keyword(s):  
Mechanical Properties ◽  
Design Process ◽  
Manufacturing Process ◽  
Mechanical Design ◽  
Material Selection ◽  
Selection Process ◽  
High Stress ◽  
Manufacturing Cost ◽  
Selection For ◽  
Prototype Design

This paper deals with mechanical design and material selection process for experimental milling device used in mechanochemistry. Part of this process is right optimizing shapes and dimensions with used material and manufacturing process. Our selection and design process were considering stress on individual parts, purpose of parts, future upgradability, material cost and manufacturing cost. All these factors were resulting into high usage of materials like PLA (polylactic acid) and alloys based on aluminium. These materials are generally very good for prototyping thanks to their mechanical properties and cost. For parts with high stress expectation we therefore used more durable materials. In the end we describe disadvantages of PLA materials against metals in production.

Fuzzy Logic Approach for Material Selection in Mechanical Engineering Design

2019 ◽  
pp. 99-116
Author(s):  
Nadeem Faisal ◽  
Apurba Kumar Roy ◽  
Kaushik Kumar
Keyword(s):  
Fuzzy Logic ◽  
Mechanical Design ◽  
Material Selection ◽  
Selection Process ◽  
Fuzzy Logic Approach ◽  
Logic Approach ◽  
Optimum Material ◽  
Specific Material ◽  
Fuzzy Characteristic ◽  
Selection Of

The selection of materials for a product in mechanical design holds a great importance as the selection of a specific material can impact the success or failure of the product. There are lot of methods and approaches that are available for material selection process, but majority of them work well with only material properties dealing in quantitatively measured properties. With so much amount of material being developed and researched each and every day, the selection of an optimum material has become a fuzzy characteristic. In this chapter, a simplified fuzzy logic is used as a simple, easy and effective method for choosing an optimum material in mechanical design problems. An illustration is carried out when the fuzzy logic is applied to the selection of material for aircraft wing's spar and how an optimum material is achieved.

Research on Material Selection with Multi-Attribute Decision Method and G1 Method

2014 ◽  
Vol 952 ◽  
pp. 20-24 ◽  
Author(s):  
Xue Jun Xie
Keyword(s):  
Material Selection ◽  
Selection Process ◽  
Selection Problem ◽  
Topsis Method ◽  
Attribute Weight ◽  
Multi Attribute Decision Making ◽  
Judgment Matrix ◽  
Optimal Material ◽  
Selection Of ◽  
Better Than

The selection of an optimal material is an important aspect of design for mechanical, electrical, thermal, chemical or other application. Many factors (attributes) need to be considered in material selection process, and thus material selection problem is a multi-attribute decision making (MADM) problem. This paper proposes a new MADM method for material selection problem. G1 method does not need to test consistency of the judgment matrix. Thus it is better than AHP. In this paper, firstly, we use the G1 method to determine the attribute weight. Then TOPSIS method is used to calculate the closeness of the candidate materials with respect positive solution. A practical material selection case is used to demonstrate the effectiveness and feasibility of the proposed method.

scholarly journals Sustainable Construction by Means of Improved Material Selection Process

2019 ◽  
Vol 3 (1) ◽  
pp. 85 ◽  
Author(s):  
Koorosh Gharehbaghi ◽  
Maged Georgy
Keyword(s):  
Energy Savings ◽  
Material Selection ◽  
Selection Process ◽  
Sustainable Construction ◽  
Construction Operation ◽  
Selection Factors ◽  
Strength And Durability ◽  
Operation Cost ◽  
Selection Of

Whilst sustainable construction relates to both a building’s structure and the use of proper life cycle processes, the selection of the most appropriate material/s is deemed a considerable undertaking. Throughout a building’s lifecycle that extends from design, construction, operation, maintenance, renovation, until demolition, the selection of sustainable material/s is a particularly crucial task for the development and establishment of such structures. Traditionally, there are three main materials for general construction: (1) Steel, (2) Concrete and (3) Timber. These materials not only influence the function within the structure, but also affect the operation cost and energy usage. Operation cost reduction and energy savings are typically elements of the sustainable construction sphere. However, in developing countries, there is a variety of highly critical factors, which can impact material selection as well as the long-term sustainability of the structure, including: Fire Performance, Environmental Impact, Structural Performance (strength and durability), and Functioning Capabilities. Accordingly, this paper will first compare the sustainability of these three key materials and then converse with appropriate processes for material selection. Attention will be given to the sustainable construction recompense associated with the different material selection factors. Doing so ensures a more sustainable built environment by means of an improved material selection process.

scholarly journals Design Innovation and Validation of a Non-Electric Hearing Aid for Improved Usability

2018 ◽  
Vol 7 (3.7) ◽  
pp. 90
Author(s):  
Poh Kiat Ng ◽  
Kian Siong Jee ◽  
Li Wah Thong ◽  
Jian Ai Yeow
Keyword(s):  
Cost Analysis ◽  
Hearing Aids ◽  
Material Selection ◽  
Selection Process ◽  
Hearing Aid ◽  
Electric Hearing ◽  
Design Innovation

This study aims to innovate and validate the design of a non-electric hearing aid for improved usability. Studies on conventional and existing hearing aids were carried out before the actual study on developing this non-electric hearing aid was done. The final product underwent a series of evaluations in order to verify its viability and usability. Conceptualisation, material selections and concept selections were carried out in order to select the most appropriate concept for this study. The material selection process ensures that the choice of material is appropriate for the specific requirements of the components to be achieved. Subsequently, a detailed cost analysis was carried out to ensure that the manufactured product would be affordable to the customers. Several experiments and tests were performed to evaluate the product’s performance. Although a validated prototype for a non-electric hearing aid is in hand, future improvements on the fabricated product are still needed in order to ready the product for its future commercialisation phase. 

Structural Alloys

1983 ◽  
pp. 371-411 ◽  
Author(s):  
H. I. McHenry
Keyword(s):  
Aluminum Alloys ◽  
Physical Properties ◽  
Stainless Steels ◽  
Material Selection ◽  
Selection Process ◽  
Austenitic Stainless Steels ◽  
General Information ◽  
Metals And Alloys ◽  
Mechanical And Physical Properties ◽  
Cryogenic Application

Abstract This chapter discusses the structural alloys being used for cryogenic applications in commercially significant quantities. It emphasizes the practical considerations involved in the material selection process and provides the information necessary to make preliminary selections of alloys most suitable for the intended cryogenic application. The chapter provides general information on a class or group of alloys, their representative mechanical and physical properties, and their fabrication characteristics. The materials covered are austenitic stainless steels, nickel steels, aluminum alloys, and other metals and alloys.

scholarly journals Thermoplastic Matrix Material Selection Using Multi Criteria Decision Making Method for Hybrid Polymer Composites

2014 ◽  
Vol 564 ◽  
pp. 439-443 ◽  
Author(s):  
Muhd Ridzuan Mansor ◽  
S.M. Sapuan ◽  
Edi Syam Zainudin ◽  
A.A. Nuraini ◽  
Arep Ariff Hambali
Keyword(s):  
Decision Making ◽  
Polymer Composites ◽  
Natural Fiber ◽  
Material Selection ◽  
Selection Process ◽  
Matrix Material ◽  
Final Decision ◽  
Multi Criteria Decision Making ◽  
Hybrid Polymer ◽  
Thermoplastic Matrix

Multi criteria decision making (MDCM) methods are amongst the approaches available in aiding composite designers to make the final decision especially during the material selection process where multiple solutions are present and various requirements are required to be satisfied simultaneously. Thus, in this paper, material selection process of thermoplastic matrix using MDCM methods for hybrid natural fiber/glass fiber polymer composites is presented. The aim is to identify the most suitable type of thermoplastic matrix to be used in the hybrid polymer composites formulation. The Weighted Sum Method (WSM) is applied in the selection process of seven candidate thermoplastic matrix materials based on the product design specifications. The overall analysis highlights that low density polyethylene (LDPE) is the preferred matrix for the intended application based on the highest scores obtained compared to other candidate materials. A signal-to-noise (S/N) ratio analysis was further performed to validate the initial selection results where LDPE once again outperformed other candidate materials with highest S/N ratio score in the non-compensatory approach.

scholarly journals Material selection and design analysis of multi-purpose disposable safety syringe

2018 ◽  
Vol 7 (4.13) ◽  
pp. 214-220
Author(s):  
Mohd Nasri Ishak ◽  
Abd Rahim Abu Talib ◽  
Mohammad Yazdi Harmin
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Material Selection ◽  
Selection Process ◽  
Design Analysis ◽  
Element Analysis ◽  
Safety Feature ◽  
The Finite Element Analysis ◽  
Current Design ◽  
Selection For

Current design of safety syringes requires two handed operation and additional processes which is not similar to the normal syringes. Due to this concern, a new design of safety syringe is introduced in order to produce a safety syringe which allows a single-handed operation and similar to the operation of a normal syringes. This paper presents the material selection process and design analysis of a newly devel-oped multi-purpose disposable safety syringe. Based on the design analysis, the force which needed to dismantle the nozzle is found to be 20 N and this value is practical for the end users. The finite element analysis had also shown that the design concept is safe and has safety feature for the user to use. In addition, copolymer is proven as the best material selection for safety syringe production.

Weighting of Natural Fibre Criteria for Fibre Metal Laminate Using Entropy Method for Car Front Hood Utilization

2017 ◽  
Vol 740 ◽  
pp. 75-80
Author(s):  
Noordiana Mohd Ishak ◽  
Sivakumar Dhar Malingam ◽  
Muhd Ridzuan Mansor
Keyword(s):  
Material Selection ◽  
Selection Process ◽  
Success Probability ◽  
Natural Fibre ◽  
Entropy Method ◽  
Raw Material ◽  
Information Measurement ◽  
Suitable Material ◽  
Fibre Metal ◽  
Fibre Metal Laminate

Material selection is one of the crucial stages in design and development process which depend on various physical, mechanical and manufacturing properties. To increase the success probability of the product, the designer needs to decide the suitable material. Therefore, to increase the reliability of the product, entropy method could be applied to determine the importance of criteria for the material used. Entropy method is a highly reliable and can be adjusted to information measurement to determine weighting criteria in decision making environment. Weighting criteria of material play a very significant role in the ranking results of the material selection. Therefore, the aim of this study is to utilise entropy method to rank the main criteria of the natural fibre used in fibre metal laminate panel for car front hood design. It is important to define the main criteria of materials during the material selection process to prevent any mechanical failure and to control the raw material cost. Most of the fibre metal laminate in the market utilise synthetic fibre, while natural fibre is rarely explored. Entropy method was applied to determine the main criteria weighting of natural fibre using five criteria. The result showed the highest rank to the lowest rank for the main criteria is density, stiffness, water absorption, cost and finally availability.

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