Activity 4 Case Study The Fracturing Of A Bracket
Activity 4
To solve the fracturing of the bracket we are going to change in dimensions make the bracket more compact and lighter which decrease the chance of fracture. And increasing the number of holes to 2 increases the stability of the cable and giving excess strength to the bracket. By using those dimensions below:
Length: 250mm
Width: 210mm
Height: 125mm
Thickness: 12mm
Thickness of base: 10mm
No. of mounting points: 4
No. of holding holes: 2
Diameter of the holes: 65mm each.
The proposed design uses high carbon steel instead of low carbon steel, this increase strength and rigidity of the compacted bracket design. The composition of high carbon steel contains 0.55% - 0.95% carbon, with 0.30% - 0.90% manganese, that
making it very strong compared to low carbon steel that contains 0.05% - 0.25 carbon and up to 0.4% manganese .
Existing products have at least 3 or more mounting points and 65mm diameter hole with a dimensional tolerance of +/- 2mm. and used low carbon steel or much weaker materials. They haven’t got resistance to corrosion or rust and shorter life cycle. Some of them made from many other materials as mentioned below:
Material Properties Used in
Aluminium Sliver coloured, low density metal, exhibits moderate strength, very resistant to corrosion, … Aluminium brackets, aerospace industry, automobiles, packaging, construction, etc.
Plastics Generally hard, resistance to heat, durability, weather resistance, ductility, … Plastic brackets, packaging, transportation, medical and health, electrical and electronic, sports and leisure..
Low carbon steel Has a relatively low tensile strength, 0.3 per cent carbon in it’s make, weld ability, … Cutting tools, bolts, screws, nuts, car bodies, grinders….
High carbon steel Very hard, wear resistance, quite brittle, contains over 0.8% carbon but less than 2.11% carbon in its composition, Hardness and toughness can be improved by heat treatment, High Carbon Steel is not as malleable and ductile as mild steel, its melting point is about 1300 °C, Railways, cutting tools, high strength wires, screwdrivers, punches….
Stainless steel Corrosion resistance, low maintenance, more durable than most metals, difficult to cut or file high tensile strength… Sink units, kitchenware, pipes, aircraft….
I am using High carbon steel because it’s the most suitable one for hardness, corrosion resistance and some other factors.
To solve the fracturing of the bracket we are going to change in dimensions make the bracket more compact and lighter which decrease the chance of fracture. And increasing the number of holes to 2 increases the stability of the cable and giving excess strength to the bracket. By using those dimensions below:
Length: 250mm
Width: 210mm
Height: 125mm
Thickness: 12mm
Thickness of base: 10mm
No. of mounting points: 4
No. of holding holes: 2
Diameter of the holes: 65mm each.
The proposed design uses high carbon steel instead of low carbon steel, this increase strength and rigidity of the compacted bracket design. The composition of high carbon steel contains 0.55% - 0.95% carbon, with 0.30% - 0.90% manganese, that
making it very strong compared to low carbon steel that contains 0.05% - 0.25 carbon and up to 0.4% manganese .
Existing products have at least 3 or more mounting points and 65mm diameter hole with a dimensional tolerance of +/- 2mm. and used low carbon steel or much weaker materials. They haven’t got resistance to corrosion or rust and shorter life cycle. Some of them made from many other materials as mentioned below:
Material Properties Used in
Aluminium Sliver coloured, low density metal, exhibits moderate strength, very resistant to corrosion, … Aluminium brackets, aerospace industry, automobiles, packaging, construction, etc.
Plastics Generally hard, resistance to heat, durability, weather resistance, ductility, … Plastic brackets, packaging, transportation, medical and health, electrical and electronic, sports and leisure..
Low carbon steel Has a relatively low tensile strength, 0.3 per cent carbon in it’s make, weld ability, … Cutting tools, bolts, screws, nuts, car bodies, grinders….
High carbon steel Very hard, wear resistance, quite brittle, contains over 0.8% carbon but less than 2.11% carbon in its composition, Hardness and toughness can be improved by heat treatment, High Carbon Steel is not as malleable and ductile as mild steel, its melting point is about 1300 °C, Railways, cutting tools, high strength wires, screwdrivers, punches….
Stainless steel Corrosion resistance, low maintenance, more durable than most metals, difficult to cut or file high tensile strength… Sink units, kitchenware, pipes, aircraft….
I am using High carbon steel because it’s the most suitable one for hardness, corrosion resistance and some other factors.