5. Major Developments in Technology

Question 1

What are microelectronics?

Answer 1

Miniture Electronics devices systems, facilitated by the development of the integrated circuit.

Question 2

;What are examples of 1950s Pre IC (Integrated circuits) and modern Practice?

Answer 2

E.g
Manufacturing
1950s : skilled manual machines
Now : CNC machines Jit systems
quality Control
1960s: manual and visual inspections
Now : Automated skcanning digital scanning

Question 3

What is the Internet of things (IoT)

Answer 3

Networking of mutiple microelectronic systems devices using Wif-fi and the internet

• RFID tags
• Jit Manufacturing

Question 4

What are the Key features of gulam?
(NEW MATERIALS)

Answer 4

• Layered timber and glue
• used to create various components
• easy to for parts
• sustainable
• good strength
• Applications - buildings bridges

Question 5

What are the Key features of Graphene? (Nanomaterial)
(NEW MATERIALS )

Answer 5

• Two dimensional
• can be rolled into very thin hollow tubes
• very good tensile strength, heat resistant and electrical conductivity
• Applications - Medical treatment , nanoelectric devices

Question 6

What are the key feautres of Electrohydraulic forming?
(NEW METHODS OF MANUFACTURE)

Answer 6

• Sheet metal is forced agasint a former by a shockwave from electrical spark in water tank
• Fast , good detail , one sided former

Applications- car parts , electrical components

Question 7

What are the key feautres of Advanced 3D printing(DMLS)?
(NEW METHODS OF MANUFACTURE)

Answer 7

• Laser fuses metal particles layer by layer
• Complex strong and lightweight parts can be made
• undercuts are possible
  Applications - one off prototypes

Question 8

What are the key feautres of ** Fibre injection moulding**?
(NEW METHODS OF MANUFACTURE)

Answer 8

• Injection moulding using pellets of glass or carbon fibre filled polymers such as nylon
• strong rigid and lightweight and economical to mould
  Applications - automative, sports equiptment

Question 9

What are the key feautres of ** Laser bean welding**?
(NEW METHODS OF MANUFACTURE)

Answer 9

• intense heat of a laser beam is used to join multiple pieces of metal
• FAster than MIG and TIG welding
• minimised distortions
• welds thin sheets
• No finishing needed.
  Applications ship building contructions

Question 10

What are the key feautres of ** Physical vapour deposition**?
(NEW METHODS OF MANUFACTURE)

Answer 10

• Base material is vapourised and deposits in thin layer
• Abrasion resistant
• durability
  uniform depostion
  Applications - food packaging, decorative products

Question 11

What are the key feautres of Standardised desing formats STL DXF?
(ADVANCEMENTS IN CAD AND CAM)

Answer 11

• connect CAD and CAM processes

Question 12

What are the key feautres of ** Extensible markup language (XML)**?
(ADVANCEMENTS IN CAD AND CAM)

Answer 12

• improved file compatibility for a growing range of different software packages