Week 4
Reflection
We chose the most feasible and suitable material with COWS Matrix. COWS is an acronym for criteria, options, weightage and score. We selected criterias based on the application of the material. Such examples are tensile strength, if the material is carcinogenic, flexibility, etc. The weightages shall then be given to the criteria based on its importance depending on the application of the material, this also plays a huge role in giving scores to find out which material is the most suitable. Scores will be usually given from 1-3 with 1 being the worst and 3 being the best. The most suitable material will be identified by having the highest score.
Group Assignment
Our group have been tasked to select materials for a single use (disposable) water bottle that does minimal environmental harm.
Step 1: List the material requirements for the design
The first requirement is corrosion resistant. This prevents the material from corroding and contaminating the water when it comes into contact with it. This prevents the material from corroding.
Another requirement for the material is that it has to be lightweight. As the water bottle would be carried around, having a light material is crucial. This allows people to bring it around with ease.
The third requirement is that it has to biodegradable. Since it is a single use water bottle, having a biodegradable material so that microorganisms, fungi, or bacteria, it will eventually break down to its basic components and blend back in with the earth. This prevents landfills from filling up.
Since the product is for a disposable water bottle which contains water that is used for human consumption, the water bottle has to be non-hazardous.
Step 2: Select and evaluate candidate materials
Based on the description above, the class of materials that are viable are polymers, and natural materials.
Step 3: Making of COWS matrix Once we have selected suitable criterias and weightages, we created a COWS matrix to assess on the materials based on the criteria by giving scores to come out with the most feasible material.
From the chart above, we have concluded that polylactic acid is the most feasible material to be made as a single use disposable water bottle as it has the highest score of 280 among the other possible materials.
Step 4: Deciding on the most economically friendly
Another importaant criteria to look onto is if it is affordable and easily accessible. Hence we also created a COWS matrix based on those criteria.
From the chart above, we have concluded that polyethylene is the most affordable and available material with a score of 300.
In conclusion, we have selected polyethylene as our most economical and feasible material.
We chose the most feasible and suitable material with COWS Matrix. COWS is an acronym for criteria, options, weightage and score. We selected criterias based on the application of the material. Such examples are tensile strength, if the material is carcinogenic, flexibility, etc. The weightages shall then be given to the criteria based on its importance depending on the application of the material, this also plays a huge role in giving scores to find out which material is the most suitable. Scores will be usually given from 1-3 with 1 being the worst and 3 being the best. The most suitable material will be identified by having the highest score.
Group Assignment
Our group have been tasked to select materials for a single use (disposable) water bottle that does minimal environmental harm.
Step 1: List the material requirements for the design
The first requirement is corrosion resistant. This prevents the material from corroding and contaminating the water when it comes into contact with it. This prevents the material from corroding.
Another requirement for the material is that it has to be lightweight. As the water bottle would be carried around, having a light material is crucial. This allows people to bring it around with ease.
The third requirement is that it has to biodegradable. Since it is a single use water bottle, having a biodegradable material so that microorganisms, fungi, or bacteria, it will eventually break down to its basic components and blend back in with the earth. This prevents landfills from filling up.
Since the product is for a disposable water bottle which contains water that is used for human consumption, the water bottle has to be non-hazardous.
Step 2: Select and evaluate candidate materials
Based on the description above, the class of materials that are viable are polymers, and natural materials.
Step 3: Making of COWS matrix Once we have selected suitable criterias and weightages, we created a COWS matrix to assess on the materials based on the criteria by giving scores to come out with the most feasible material.
From the chart above, we have concluded that polylactic acid is the most feasible material to be made as a single use disposable water bottle as it has the highest score of 280 among the other possible materials.
Step 4: Deciding on the most economically friendly
Another importaant criteria to look onto is if it is affordable and easily accessible. Hence we also created a COWS matrix based on those criteria.
From the chart above, we have concluded that polyethylene is the most affordable and available material with a score of 300.
In conclusion, we have selected polyethylene as our most economical and feasible material.
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