Design Realization/Detailed Design - Medical Device Design: Innovation from Concept to Market - page 184

(a)

$28

$21

Oct 2008 2009 2010 Oct 2011

(b)

$2

$1
Oct 2008 2009 2010 Oct 2011

(c)

$1

$0.5

Oct 2008 2009 2010 Oct 2011

Figure 8.21
Typical variations in material costs $/kg: (a) titanium; (b) aluminum alloy; (c) cold rolled steel.
(Source www.metalprices.com )

l

How will the component/item be held?

l

Can every feature be made?

As with most things modern, some CAD packages come with DFM options built in (see
Figure 8.23 ). All of this has been built on the back of the work of Boothroyd and Dewhurst, 3
who were awarded the National Medal for Technology for their efforts (shown to save U.S.
industry billions of dollars). For more detail I refer you to Boothroyd et al . (2010).

3 Boothroyd and Dewhurst started their own DFMA company based on computerization of the DFM and DFA
process: http://www.dfma.com/