20/05/21, Tuesday
🕤 Activities Timeline 🕐 |
Design for Material |
Group Activity Discussion |
Sharing Among Class |
Due to the Phase 2 (Heightened Alert) condition in Singapore, we had to revert back to Home-Based Learning (HBL) until the end of this term. So, we start again our lesson in MS Team.
------------------------------------- ➎ LESSON: DESIGN FOR MATERIAL ---------------------------------
🚩What is the material for design?
2 types - Conventional & Traditional
Finding a material with property attributes that meet or exceed the requirement of a product and at the same time does not possess manufacturing difficulties and is not exorbitant in price.
Changing a design so that a particular material can be used.
--------------------------------------------- ✍️Group Activity ✍️ --------------------------------------------
Due to the tightening of SMM recently, the brief tour of the “ Material Exploration” Wall at the Library is suspended, so we use GOOGLE instead.
🚩 The main task of this worksheet
Find 1 material
Discuss how this material can be replaced by other material in the existing product without any significant changes in the design.
Discuss how to enhance the functionality of the existing product through some changes in the design.
Design for Materials – Worksheet for Activity
Class: | 2A-04 | Group: | 3 |
Team Members | Chan Wan Sin Ong Sheng Esen Raul Mahendran Muhammad Zulhilmi Bin Suratman |
Name of material | Aluminium |
Chemical Name | Aluminium |
General Description | Aluminium is a light, conductive, corrosion-resistant metal with a strong affinity for oxygen. This combination of properties has made it a widely used material, with application in aerospace, architectural construction and marine industries, as well as many domestic uses. |
General Properties | - Good strength-to-weight ratio - Low cost - Versatile processing - Nonmagnetic - Achieves a high polish - Excellent corrosion resistance - Good machinability |
Opportunities | Uniform, glossy finishes can be achieved even when shaping and bending a sheet material for a cost-effective product. |
Discuss among the group how this material can be used as a direct replacement to a material in an existing product without any significant changes in the design. Product: 
Material Replacement: Aluminium 
The material can be used to replace the stainless-steel bowl of the ration cooker. Aluminium, being less dense compared to stainless steel can make the cooker lighter. It is also easier to work compared to stainless steel, aluminium can be bent into shape without breaking it a lot easier than you can stainless steel, which, as it is harder to form, can be more difficult to work with. Thus, can reduce production costs. |
Discuss among the group how this material can be used to enhance the functionality of an existing product through some changes in the design. The modification to the design would be coating stainless steel on the aluminium. As the aluminium conducts heat better than the stainless stain. Since aluminium is not food grade approved, coating the bowl with stainless steel solves that issue. Aluminium has almost double the thermal conductivity as compared to stainless steel 16.2w/mk. 30.0W/m.k vs 16.2W/m.k A great functionality of aluminium is its property of being lightweight. Comparing with stainless steel where it’s heavier, aluminium makes portability better. Users are more likely to carry a lightweight container compared to a heavier one. Hence, it improves the functionality of being portable. Besides lightweight, aluminium poses good machinability, as it is easier to work with. It is soft, easy to mould, reshaping and cut. In the process of producing the product, it can be easily bent and shaped without breaking compared to stainless steel. Aluminium has a much better thermal conductivity (conductor of heat) than stainless steel. One of the main reasons it is used for car radiators and air conditioning units. Also, aluminium has a high resistance to corrosion. Trade-off Based on Mat Web: Aluminium: Thermal Conductivity - 30.0 W/m-K Density - 3.96 g/cm3 Stainless Steel-316: Thermal Conductivity - 16.2W/m-K Density: 7.99 g/cm3 |
--------------------------------------------------💬Group Reflection💬---------------------------------------
We learnt that changing the materials or design of a product can help to improve or change its function.
No comments:
Post a Comment