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.

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.

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.

scholarly journals Material selection for a new type of fire extinguisher

2011 ◽  
Vol 2 (3) ◽  
pp. 476-485
Author(s):  
L. Lambert ◽  
W. De Waele ◽  
G. Van De Vijver
Keyword(s):  
Design Process ◽  
Fire Safety ◽  
Material Selection ◽  
Point Of View ◽  
Human Beings ◽  
Fire Extinguisher ◽  
Residential Areas ◽  
Industrial Areas ◽  
New Type ◽  
Selection For

Nowadays safety is a hot topic, damage inflicted to human beings is intolerable. Fire safety is a big concernin industrial areas, but in residential areas a lot less precautions are in place. Therefore a new type of fireextinguisher should be developed that should encourage the installation of fire extinguishers in commercialenvironments and at home. The design of this fire extinguisher has to answer to a lot of demands. From alegal point of view, the extinguisher has to comply with the PED regulations and the EN 3 standard. Extrademands are, given the purpose, superb performance, great ergonomics and an attractive visual design.One of the steps in the design process is to make a material selection based on needed and desiredproperties of materials. Also the possible processes for manufacturing are an important parameter.

Incorporating Dimensional Requirements Into Material Selection and Design of Injection Molded Parts

1996 ◽  
Author(s):  
Kurt A. Beiter ◽  
Kosuke Ishii
Keyword(s):  
Mechanical Performance ◽  
Material Selection ◽  
Production Costs ◽  
Research Approach ◽  
Manufacturing Cost ◽  
Part Geometry ◽  
Molded Parts ◽  
Injection Molded ◽  
Selection For ◽  
Design Selection

Abstract This paper presents a methodology for incorporating part dimensional tolerancing into material selection for engineering thermoplastics. This work builds on the authors’ previous efforts on integration of mechanical performance and manufacturing cost into candidate design selection. The benefit of this approach is the simultaneous consideration of the implications of material selection and part geometry on estimated manufacturing cost during candidate design selection. The research approach uses the Pressure-Volume-Temperature (PVT) method to estimate shrinkage in thermoplastic parts. The authors then present a method for calculating production costs for meeting part tolerance requirements. Example calculations and a computer program illustrate the proposed methodology.

Materials Selection for Failure Prevention

2021 ◽  
pp. 3-19
Author(s):  
Brett A. Miller
Keyword(s):  
Failure Analysis ◽  
Design Process ◽  
Selection Process ◽  
Materials Selection ◽  
Failure Prevention ◽  
Root Cause ◽  
Selection For ◽  
Analysis Of Failures ◽  
General Aspects

Abstract Materials selection is closely related to the objectives of failure analysis and prevention. This article briefly reviews the general aspects of materials selection as a concern in both proactive failure prevention during design and as a possible root cause of failed parts. Coverage is more conceptual, with general discussions on the following topics: design and failure prevention, materials selection in design, materials selection for failure prevention, and materials selection and failure analysis. Because materials selection is just one part of the design process, the overall concept of design is discussed. The article also describes the role of the materials engineer in the design and materials selection process. It provides information on the significance of materials selection in both the prevention and analysis of failures.

TOLERANCE DESIGN IN POWERTRAIN PRODUCT CREATION PROCESS

2006 ◽  
Vol 05 (02) ◽  
pp. 167-177
Author(s):  
SHUXIN GU
Keyword(s):  
Product Quality ◽  
Design Process ◽  
Manufacturing Process ◽  
Best Practice ◽  
System Level ◽  
Product Launch ◽  
Manufacturing Cost ◽  
Tolerance Design ◽  
Creation Process ◽  
Product Creation

Tolerance design is one of the key activities in the product creation process. It not only directly effects product quality but also has significant impact on manufacturing process and product cost. The tolerance design should never be overlooked in the product creation process. Though the importance of the tolerance design is well understood in the engineering community, a well established process for the tolerance design in the product creation process is still lacking. The practice of the tolerance design in most automotive industries is not consistent, and it largely depends on individual experience. Best practice and valuable knowledge is not captured in a systematic manner, and most often the new design does not benefit from best-in-class design knowledge. Most engineers can only go back to the very previous design for reference due to the lack of knowledge base tools. Therefore, optimal tolerance design could be missed. In addition, most tolerance design at earlier product lifecycle only concentrates on product functionality itself. Some serious manufacturing issues could be overlooked at the beginning and are only uncovered until it is too late. In addition to the delay of the product launch, the cost of fixing these manufacturing problems is often very expensive. Moreover, lack of a tool or process to look at system level tolerance interactions causes designers to miss optimal tolerance for each individual part design. In this paper, a tolerance design process is proposed in order to optimize product tolerance for function, manufacturing cost, and quality. This process will capture the knowledge of product tolerance design and optimize this knowledge to re-apply to every new product design. Also, with the help of feature-based design and knowledge-based technology, manufacturing process, cost, product quality, etc. could be considered at the earliest stage of the design cycle. Therefore, the quality and cost of design will be better understood and controlled compared to an ad hoc tolerance design process.

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.

Preliminary Study on Effects of the Process Parameters on Mechanical Properties in Liquid Holographic Volumetric Additive Manufacturing Process

2019 ◽  
Author(s):  
Sagil James ◽  
Thilakraj Shivakumar
Keyword(s):  
Mechanical Properties ◽  
Additive Manufacturing ◽  
3D Printing ◽  
Manufacturing Process ◽  
Material Selection ◽  
Primary Source ◽  
Limited Range ◽  
Printing Technology ◽  
3D Printing Technology ◽  
Light Beams

Abstract The momentum of the additive manufacturing research is on a spurt. Additive manufacturing, also known as 3D printing process has been attracting the attention of the manufacturing community worldwide over the past decade. The 3D printing technology promises significant advances and applications in the area of automobiles, electronics, and medical devices and so on. However, this technology currently suffers from several limitations including large time consumption, need for support structures and limited range of material selection. This prevents its application in mass production. Holographic 3D printing, also referred to as (volumetric additive manufacturing) process is a very recent technique which uses multiple light beams intensified to form a build volume. A photosensitive liquid resin is solidified using the principle of constructive interference. The single light beam is not enough to produce the required intensity to cure the resin. While the combined interference could generate the required energy. The resulting part is printed in a fraction of seconds at once in contrast with the traditional 3D printing technology. This research studies the feasibility of a novel holographic volumetric additive manufacturing with an ultraviolet source of 365 nm as the primary source of energy. This propels the polymeric photochemical reaction between the monomer molecules. Also, experiments are conducted, incorporating various viscosity levels of the photopolymer material to suppress the oxygen dissolution. At the same time to observe the rate of curing of the photopolymer material. Finally, the mechanical properties of the build volume are analyzed.

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