Intro

Question 1

Material selection criteria, deterioration and economics

Answer 1

In service condition

Question 2

Metals

Answer 2

Composed of one or more metallic element and often small amounts of non metallic elements

Question 3

Metal properties

Answer 3

Strong, stiff, ductile and resistant to fracture. Non elecrolized electrons

Question 5

Ceramics

Answer 5

Compounds composed of metallic and non metallic elements which are frequently oxides, nitrides or carbides

Question 7

Ceramic properties

Answer 7

Stiff, strong, hard, insulator and brittle

Question 9

Polymers

Answer 9

Molecular chain made up of carbon and hydrogen and other non metallic elements which

Question 10

Polymer properties

Answer 10

Typically low densities, diable, pliable, inert, soften at modest temps, low electric conductivity and non magnetic

Question 11

Composites

Answer 11

Composed of two or more individual materials which come from metals, ceramics and polymers

Question 13

Experiential attributes

Answer 13

Appraised meaning given to a material

Question 14

Tools that help select a material based on experiential qualities.

Answer 14

Technical properties- limitation: no perceived change unless altered stimuli exceeds some fresh hold- JND - just noticeable difference.

Explicit evaluation- consciously formed attitudes that are known to the individual- limitation: less reliable if people do not fully understand views. Can be evaluated uses semantic differential scales. Gathers responses where a material lies between two bipolar adjectives. Can also use flash profiling and nappy tests- participants presented with a number of samples and asked to rank them against some attribute.

Implicit evaluation- subsequent behaviours that result from subconscious processes. Implicit association test- series of timed activities where participants sort stimuli fear appear in the middle of a screen to target categories. Response time can be measured.