Section A Timbers Flashcards

Question

What is veneering

Answer 1

The term used to describe gluing a thin sheet of timber on unattractive wood to make it more attractive

Answer 2

It is renewable, meaning it will not run out. It has a low cost for maintenance and operation Creates job opportunities They do not occupy a lot of space

Answer 3

Unreliable Cause lots of noise and disturbance Not the most aesthetically pleasing Negatively affects wildlife if not carefully designed We cannot generate it on demand

Answer 4

Metals without iron

Answer 5

Brass, copper and aluminian

Answer 6

Easy transportation and handling than raw materials Standard forms and sizes are much cheaper than special sizes and forms Processed in large quantities Designers would commonly do this

Answer 7

Business's reaction to unexpected changes Unable to bulk buy discounts if brought in small quantities Eg: If a heatwave causes a demand for ice cream, there would be a lack of stock and have to rely on suppliers

Answer 8

Textiles are made from fibres and classified as natural or manufactured. They are twisted into yarns before being made into woven, knitted or bonded fabrics.

Answer 9

Felted wool is a woven textile. Like wool felt, it originates as wool roving but roving is then spun in thread after being cleaned and carded. The thread is then woven into wool cloth, which is then washed into hot water and dried on high heat

Answer 10

A composite is a material made from two or more different materials that, when combined, are stronger than those individual materials by themselves

Answer 11

Chipboard, reinforced concrete, plywood

Answer 12

Low weight Great strength Corrosion resistant Chemical resistant Easy for installing and transportation Withstands high pressures and loads without breaking or deforming Doesn't rust or rot Resists chemicals and acids

Answer 13

Fibreglass is a common type of fiber reinforced plastic using glass fiber

Answer 14

High costs Difficult to install Can be damaged by hail Not as energy efficient as other roofs Discolouration

Answer 15

Levers use mechanical advantage to make lifting or applying pressure easier. All levers are made of a bar or pivot called a fulcrum. Levers have three main parts.

Answer 16

Effort = this is the amount of force applied by the user, also known as input Fulcrum = where the lever pivots Load = the weight required to be moved, also known as output

Answer 17

Amount of help given using a machine in comparison to doing something with human effort, created by levers

Answer 18

Load/Effort. Both measured in newtons This could also mean Output/Input

Answer 19

First order, second order and third order

Answer 20

It places the fulcrum between the load and effort. If the load is closer to the fulcrum, it is easier to lift. We can refer this to a seesaw, which places the fulcrum in the centre and allows equally weighted children to lift one another. The load and effort can represent each side of the seesaw.

Answer 21

Places the fulcrum at one end of the lever and the effort at the other with the load in the centre. The closer the two are, the easier it is to lift the load. Examples include wheelbarrows, nutcrackers and bottle openers.

Answer 22

Places the effort between the fulcrum and the load. If the effort and fulcrum are further apart, it makes it easier to lift the effort. Third order levers do not have the same advantages of a first order lever or second order level, so are used less commonly. Examples include tweezers or fishing rods.

Answer 23

Oscillation Rotary Linear Reciprocating

Answer 24

Linear motions move something in a straight line eg: a train moving down a track

Answer 25

Rotary motions allow something to move around an axis or pivot point eg: wheel

Answer 26

Reciprocating motions have a repeated up or down motion or back and forth motion eg: a pump or piston

Answer 27

Oscillating motions have a curved backwards or forwards movement that swings on an axis or pivot point eg: a clock pendulum or swing

Answer 28

Many textiles are used for the purpose of safety It is comfortable sportswear which is the key for an athlete They are restrictive fabrics which can inhibit performance in sport so non restrictive Stretchy textiles result in wide range of movement and better performance

Answer 29

Sticks to sweaty skin Sensitive for high temperatures Not sustainable Not as breathable as cotton

Answer 30

Corrugated board is used for packaging for products that need protection Two or more layers of a fluted board sandwiched between board sheets, recyclable and impact resistant

Answer 31

Folding boxboard is used for cereal boxes, cartons and food packaging It consists of a bleached pulp top layer, unbleached, can be scored without splitting the pulp middle layers, and a bleached pulp inside the layer

Answer 32

1. Use less packaging material. Instead use lightweight paper or carboard, less tape and glue and smaller box sizes. 2. Reduce the piece quantity. Instead, combine more than one item into a package or with similar weights 3. Reduce labelling costs. Instead print a single label for all products into a box and then add stickers

Answer 33

The interconnection via the internet of computing devices embedded in everyday objects, enabling them to send and receive data

Answer 34

Listen actively Respond in a timely manner Paraphrasing Sharing feedback Showing empathy

Answer 35

Create a testable hypothesis Analyse an assessment First, focus on the problem, not the product Ask open ended questions Track interviews Iterate our hypothesis as we go on

Answer 36

Pillar drills are free standing machine tools used by engineers that use high powered motors to rotate drill bits at varying speed. These bits are then used to accurately machine, drill or tap holes in a variety of materials such as metal and wood.

Answer 37

If we engineer something from lets say timber or metal, we use digital vernier callipers to measure 1/100th of 1mm. If we work with timber, tape measures can be used to measure a correct length of 1mm. This tolerance is acceptable due to being a natural material

Answer 38

A term used to refer to the process used to alter a metal's surface by adding, removing or reshaping. The aim is to improve the aesthetic side and protect the metal

Answer 39

Knock down fittings are standardized fittings commonly used in flat-pack furniture1. They allow customers to fit furniture together easily without the need for complex tools and equipment.

Answer 40

Plastic Block Fitting = A plastic block is rectangular with screw holes predrilled on two sides. Rigid Joints= Rigid joints are typically triangular with a 90 degree plate that butts against wooden panels

Answer 41

Computer Aided Design It refers to the use of computers in the design process of structure, objects and buildings

Answer 42

Ideas are drawn and developed quickly Designs are able to be viewed from all angles and a range of materials Time saving capabilities Easier for designing and testing a range of ideas Testing and consumer research can be done before costly production takes place

Answer 43

It is expensive to setup It needs a skilled workforce Computers can fail It can be difficult to keep up with constantly changing and improving technology

Answer 44

Batch production is when multiple quantities of the same product are produced, eg: swimwear and fashionwear.

Answer 45

Flexible production Low costs Better quality control Reduced production time Better resource utilisation

Answer 46

High initial setup costs Longer production times Inefficient use of resources Quality control changes Excess Inventory

Answer 47

Compressive force is the application of balanced inward (pushing) forces to different points on a material or structure that is with no net sum or torque directed so as to reduce its size in one or more directions. It is contrasted to tension

Answer 48

A unit assembled separately but designed to be incorporated with other units into a larger manufactured product.

Answer 49

Reduced training requirements Cost reductions Enhanced accuracy Shortened production time Quality improvement Flexibility improvement Inventory reduction Reduced labour costs

Answer 50

Increased complexity Expensive materials Lack of good communication Multiple steps in the process Longer lead times Increased dependency on suppliers

Answer 51

Deforestation is the removal of a forest or stand of trees from land which is then converted to non forest use

Answer 52

It destroys ecosystems vital to wildlife and humans Forests absorb excess carbon dioxide When trees are broken down, carbon dioxide is released into the atmosphere Deforestation threatens our environment, impacts human lives and kills millions of animals every year