words used to describe how a material appears (physical/characteristic) or behaves when worked (working/mechanical)

to join two or more things to create something new

to change something to make it perform differently

how well something stays together and holds up without breaking

Enhancing the properties of textiles

Design and technology

In this unit pupils will develop technical principles knowledge with an explicit focus on exam technique.

To bind the reinforcement together and protect it

To allow the reinforcement to move freely

What is the main job of the matrix in a composite material?

To improve a fabric's strength and performance

What is the purpose of adding additives to textile fibres during production?

Which process uses heat and pressure to create a smoother material?

By adding special coatings or substances.

How can chemical treatments be used to enhance textiles?

It can maintain its shape under normal conditions without breaking.

It can resist environmental changes like temperature and moisture.

The cost-effectiveness of building a structure.

What does 'structural integrity' refer to in materials and structures?

One material bonded to at least one other

Extra rows of stitching to prevent tearing

Extra pieces of fabric to increase flexibility and reduce stress

Fastenings that reinforce high-stress areas, like corners

Thin strips of polymer/ metal sewn into channels to provide support

Match the following structural integrity techniques to its definition:

Materials are chosen based on their physical and working {{}}.

Which of the following is a working/ mechanical property of a material?

The ability of a material to resist breaking when a force is applied is called {{}}.

Match each material with its primary working/ mechanical property.

Physical properties/ characteristics relate to how a material looks and feels.

Working/mechanical properties describe material behaviour when exposed to force.

Hardness is a physical property/ characteristic.

Elasticity is a working/ mechanical property.

Which of the following statements is **incorrect**?

Put the following materials in order of increasing hardness (from least to most hard).