[해결책] 기계재료학 (공업재료) 3판(Engineering Materials 1, Ashby 출판사 BH)
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작성일 20-03-04 08:43
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Download : [솔루션] 기계재료학 (공업재료) 3.pdf
Design to use proportionally smaller amounts of scarce materials, for example,
re-designed to make recycling easier, and new recycling processes developed,
r
More Economic Design
Substitution
2.2. Principal conservation measures (see Section 2.7):
CA
(b) The doubling time, tD, is calculated by setting Ct = t = 2C0, giving
CB
(아래는 solution 표지 부분과 2장의 일부 연습문제 부분입니다. 수식이 가미되어있으므로 텍스트상에서는 이렇게 출력될 수 밖에 없음을 이해해주시고 책 확인후 결정 해주세요^^)
Solutions to Examples
Substitution of the values given for r in the table into this equation gives the
but development time is again important.
and Design, 3rd edn
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100
r
An Introduction to Properties, Applications
Recycling
SOLUTIONS MANUAL
tD
of surface coatings to prevent metal loss by corrosion (e.g. in motor cars).
순서
certain specific uses, most elements are not easily replaced. Examples: tungsten
t
doubling times as 35, 23 and 18 years respectively.
Qt are the values at t = t . Equating and solving for t gives
by building large plant (economy of scale); using high-strength materials; use
기계, 공학, 과학, 연습문제, 솔루션, 재료
ln 2 ≈ 70
rB
t
in cutting tools and lighting (a fluorescent tube contains more tungsten, as
ln
many applications, substitutes are easily found at small penalty of cost. But in
1
(up to 25 years) may be needed to find a replacement.
Engineering Materials I
[해결책] 기계재료학 (공업재료) 3판(Engineering Materials 1, Ashby 출판사 BH)
t = 100
설명
Download : [솔루션] 기계재료학 (공업재료) 3.pdf( 35 )
The fraction of material recycled is obviously important. Products may be
(c) Using the equation of Answer (a) we find that aluminium overtakes steel
rA
= 100
100
레포트 > 공학,기술계열
Examples: aluminium for copper as a conductor; reinforced concrete for wood,
2 Solutions Manual: Engineering Materials I
where CA and CB are the current rates of consumption t = t0 and Pt and
and for commodity B Qt = CB exp
2.1. (a) For commodity A Pt = CA exp
in 201 years; polymers overtake steel in 55 years.
platinum as a catalyst in chemical processing; etc. A long development time
stone or cast-iron in construction; plastics for glass or metals as containers. For
−rA
a starter filament, than an incandescent bulb!); lead in lead-acid batteries;
rB
다.
