MEC 113
Project
Screwdriver
A screwdriver is a hand tool which is considered to be used as a hand-operator to unloose a screw with slotted heads. The first characteristics for screwdriver that it is a shaped like a cross, and has a beveled tip. The second characteristic for screwdriver that it has a tip of a flat-blade tip. It is flat and tapered, and somewhat like a chisel. The materials that are made for the handle of a screwdriver are steel, wood, metal or plastic. In addition, the steel tips are generally plated with nickel or chromium.
Material Go/No Go Screening Relative Rating number Material Rating number Strength Durable (4)
Steel S 4*5=20 20
Wood S 4*3=12 12
Plastic S 4*2=8 8
The material I choose for the screwdriver is …show more content…
Titanium is a strong material for the bicycle and it is strong and steady to ride on a two wheel bicycle.
Kitchen Knife
A kitchen knife is a silverware that is used to prepare food. It could be used in the kitchen making great food for everyone. The materials that are made for the kitchen knife are Carbon steel, Stainless steel. High carbon stainless steel, Laminated, Titanium, Ceramic knives, Plastic.
Go/No Go Screening Relative Rating number Material Rating number
Material Strength Functionality Ease of Sharpening (5) Corrosion Resistance (4) Brittleness (3)
Carbon steel S S 5*4=20 4*3=12 3*5=15 47
Stainless steel S S 5*5=25 4*5=20 3*6=18 63
High carbon S S 5*2=10 4*4=16 3*4=12 38
Titanium S S 5*3=15 4*2=8 3*3=9 32
Ceramic Knives S S 5*2=10 4*1=4 3*2=6 20
Plastic S S 5*2=10 4*1=4 3*1=3 17
The material I choose for the kitchen knife is stainless steel. It is strong and it is functionality and easy to use. It is also great to use to cut the meat, tomatos, and also cut anything he is considered