Week 4

Material selection

Aim is to select material for the blade and body to suit the need for a disposable safety razor blade.

Materials For Design Assignment - safety razor blade

• Serves as a recap on the COWS Matrix learnt in Materials For Design

• Identify qualities, objectives and obstructions of making a product which will help with other projects to come and our current one.

Using COWS matrix

C - Criteria

O - Options

W - Weightage

S - Score

This method help use to select material to seek the best match between the design requirements of a product or process and material attributes.

Purpose: disposable, sharp blade to be able to shave

What kind of attribute does the materials need to possess?

• durable

• corrosion resistance

• recyclable

Other attribute that can take into consideration

• ease of fabrication

• cost of material

References:

‌Alibaba. (n.d.). Price Pet Resin. [online] Available at: <https://www.alibaba.com/product-detail/Price-Pet-Resin-Price-Pet-Resin_62168258921.html?spm=a2700.7724857.normal_offer.d_image.6cea1905oaiUBr&s=p> [Accessed 13 May 2021].

Argus. (n.d.). Brass/Bronze Price. [online] Available at: <https://www.argusmedia.com/metals-platform/metal/non-ferrous-scrap-and-secondary-metals-brass-bronze> [Accessed 13 May 2021].

‌Cole-parmer. (n.d). Chemical Compatibility Database. [online] Available at: <https://www.coleparmer.com/Chemical-Resistance> [Accessed 13 May 2021].

‌Markets Insider. (n.d.). Aluminium. [online] <Available at: https://markets.businessinsider.com/commodities/aluminum-price> [Accessed 13 May 2021].

Matweb.com. (n.d.). Online Materials Information Resource - MatWeb. [online] Available at: <http://www.matweb.com/index.aspx> [Accessed 13 May 2021].

‌Melbourne Copper. (n.d.). Stainless Steel Scrap Price. [online] Available at: <https://melbournecopper.com.au/stainless-steel-scrap-price/#:~:text=Stainless%20Steel%20Scrap%20Price%20Per%20Kg.%20The%20stainless> [Accessed 13 May 2021].

Polymerdatabase. (n.d.). Polyethylene Terephthalate (PET). [online] Available at: <https://polymerdatabase.com/Commercial%20Polymers/PET.html> [Accessed 13 May 2021].

‌The Plastic Soup Trip. (n.d.). What can the Prices of Plastics Teach Us? [online] Available at: <https://www.plasticsouptrip.com/post/97791290765/the-price-of-plastic#:~:text=%24%200.50%20-%201.50%20per%20kilogram%20for%20virgin> [Accessed 13 May 2021].