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Testing and Evaluation. Testing the Design. During the development of a new product, designers are constantly testing and evaluating their ideas to identify and suggest areas for improvement and refinement. They use a variety of techniques and methods to achieve this. Toile and Toile again!!!.

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Testing the Design.

  • During the development of a new product, designers are constantly testing and evaluating their ideas to identify and suggest areas for improvement and refinement.

  • They use a variety of techniques and methods to achieve this.


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Toile and Toile again!!!

  • Paper models

  • Patterns

  • Mock ups

  • Prototypes

    All are tested regularly against the requirements of the specification.


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Physical Tests

Such tests evaluate

Size

Strength

Weight

Etc


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What Tests?

  • Ergonomics.

  • Dermatological.

  • Colour fast – wash and wear.

  • Strength and durability.


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What Tests?

  • Ergonomics

  • Dermatological.

  • Weathering.

  • Strength and durability of fabric and construction.


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Matter of Opinion

Such tests question appropriateness of;

Ease of use

Ergonomics

Colour

Texture

Etc


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What Tests?

  • Whether the colours and patterns are co-ordinated or contrasting.

  • Whether the three different fabrics compliment each other in texture and weight.


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What Tests?

  • Whether the use of the same colour in three different fabrics work together.

  • Whether the components of the outfit are varied in intensity of detail.


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Prototypes

  • Models, mock ups and prototypes are often made in different sizes and materials to the final product.

  • Sometimes only specific parts of a product are modelled in order to test out specific parts of a design.

  • ICT is often used a great deal in the collection, to analyse and present information.


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Setting the Standards.

  • Materials and products need to be trialled in order to see how they perform against set standards.

  • These tests are usually factual and numerical, for example;

  • The garment stretched no more than 2 mm.

  • The colour faded 2% after 10 washes.


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Results

  • The results are recorded and compared against the set standards.

  • It is then possible to assess how efficient the materials and products are.

  • Testing and evaluation are carried out at every stage of the design process.


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Samples

  • Samples of textile products are made up and trialled before batch production, testing;

  • Pattern cutting – shape and style.

  • Design features – pockets, collars, cuffs…

  • Sizing and grading for different proportions.


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In addition…

  • Decisions about materials components and colour ranges.

  • Product costing and alterations that can reduce cost.

  • Best construction methods and organisation.

  • Wearing, washing and ironing and ergonomics.


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?

  • You have been asked to design a figure hugging evening dress.

  • You need in groups of five to consider the appropriateness of fabrics on both factual and opinion based matters.


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Fact ?

  • Washability.

  • Flammability.

  • Stain removal.

  • Stretch resistance.

  • Effects of bleach.

  • Effects of steam iron and dry heat.


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Fact ?

  • Is it breathable.

  • Does it have the right amount of give for movement.

  • How is the texture against the skin.

  • Are the colours and textures appropriate.