Density
The mass of a material per unit volume. A low-density material would be light, while a high-density material would be heavy.
Tensile strength
The maximum amount of stress that a material can withstand before it breaks under tension.
Strength-to-weight ratio
The strength of a material relative to its weight. Materials with a high strength-to-weight ratio are lightweight but strong.
Hardness
The resistance of a material to scratching, indentation, or deformation.
Durability
The ability of a material to resist wear, tear, and degradation over time.
Thermal conductivity
The ability of a material to conduct heat.
Electrical conductivity
The ability of a material to conduct electricity.
Corrosion resistance
The ability of a material to resist corrosion or degradation due to exposure to environmental factors.
Stiffness
The resistance of a material to deformation under stress.
Elasticity
The ability of a material to deform and return to its original shape when a force is removed.
Plasticity
The ability of a material to deform permanently under stress.
Impact resistance
The ability of a material to resist damage due to impact or shock.
Malleability
The ability of a material to be shaped or formed by hammering, rolling, or pressing.
Ductility
The ability of a material to be stretched or pulled into a wire or other shape without breaking.
Machinability
The ease with which a material can be cut, shaped, or otherwise processed by machines or tools.
Design engineers…
Design engineers must carefully consider the available forms, costs, and properties of materials when developing and manufacturing their own products. This involves selecting materials that are appropriate for the intended use and will meet the desired performance requirements while also being cost-effective. For example, if a product needs to be lightweight and durable, a composite material like carbon fiber may be a good choice due to its high strength-to-weight ratio.
In addition…
In addition to performance and cost considerations, other factors may also influence material selection. For example, environmental considerations may lead to the use of materials that are recyclable or biodegradable. Social and cultural factors may also be taken into account, such as using materials that are locally sourced or have a particular aesthetic appeal.
The selection of …
materials is a critical aspect of the design engineering process, as it can have a significant impact on the performance, cost, and sustainability of a product. Design engineers must carefully evaluate the available options and make informed decisions based on a range of factors to ensure that their products meet the needs of their intended users while also being socially and environmentally responsible.
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1. Identifying requirements (1.1 What can be learnt by exploring contexts that design solutions are intended for?)4
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1. Identifying requirements (1.2 What can be learnt by undertaking stakeholder analysis? )8
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1. Identifying requirements (1.3 How can usability be considered when designing prototypes?)8
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2. Learning from existing products and practice (2.1 Why is it important to analyse and evaluate products? )6
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2. Learning from existing products and practice (2.2 Why is it important to understand technological developments in design engineering?)4
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2. Learning from existing products and practice (2.3 Why is it important to understand both past and present developments in design engineering?)4
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2. Learning from existing products and practice (2.4 What can be learnt by examining lifecycles of products?)4
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3. Implications of wider issues (3.1 what factors need to be considered while investigating design possibilities?00
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3. Implications of wider issues (3.2 what factors need to be considered when developing design solutions for manufacture ?)0
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3. Implications of wider issues (3.3 what factors need to be considered when manufacturing products ?)0
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3. Implications of wider issues (3.4 what factors need to be considered when distributing products to markets?)0
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3. Implications of wider issues (3.5 How can skills and knowledge from other subjects areas including mathematics and science inform decision?)0
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3. Implications of wider issues (3.6 what energy factors need to be considered when developing design solutions?)0
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5. Material and component considerations (5.1 What factors influence the selection of materials that are used in products?)5
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5. Material and component considerations (5.2 What materials and components should be selected when designing and manufacturing products and prototypes in Design Engineering?)6
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5. Material and component considerations (5.3 Why is it important to consider the properties/characteristics of materials when designing and manufacturing products?)18
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6. Technical understanding (6.1 What considerations need to be made about the structural integrity of a design solution?)4
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6. Technical understanding (6.2 How do mechanisms provide functionality to products and systems?)7
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6. Technical understanding (6.3 What forces need consideration to ensure structural and mechanical efficiency? )10
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6. Technical understanding (6.4 How can electronic systems offer functionality to design solutions?)4
