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DANotes: Design: Where to from here ?
www-mdp.eng.cam.ac.uk/web/library/enginfo/textbooks_dvd_only/DAN/design/whereto/whereto.htmlembodiment design: find suitable hardware within technical and economic constraints (which is just practicalisation). ... new products are truly the lifeblood of a company's long-term economic existence. -
DANotes: Welded joints: Bibliography
www-mdp.eng.cam.ac.uk/web/library/enginfo/textbooks_dvd_only/DAN/welds/bibliography.htmlThe following is essential background to practical welded joint design :-. Economic Design of Weldments, Technical Note No.8, AWRA (now the WTIA). -
DANotes: Design: Why do we design ?
www-mdp.eng.cam.ac.uk/web/library/enginfo/textbooks_dvd_only/DAN/design/why/why.htmlrequiring maintenance to restore its effectiveness, until. eventually it reaches the end of its economic life and is retired. ... The life stages sketch emphasises the importance of creativity and economics in design, and of the technical specifications -
DANotes: Finite elements: Frontispiece
www-mdp.eng.cam.ac.uk/web/library/enginfo/textbooks_dvd_only/DAN/finiteElements/frontispiece/frontispiece.htmlThe sketch only goes so far as to identify the causes and effects between related factors in this study in the field of Agricultural Economics. -
DANotes: Pressure vessels: Introduction
www-mdp.eng.cam.ac.uk/web/library/enginfo/textbooks_dvd_only/DAN/pressVessels/intro/intro.htmlw. must equal t. s. /η. However it is most unusual for the economics to justify increase of bar thickness locally in way of the joint - the whole bar must therefore -
DANotes: Brakes: Analysis of long shoes
www-mdp.eng.cam.ac.uk/web/library/enginfo/textbooks_dvd_only/DAN/brakes/longShoes/longShoes.htmlClearly in designing such brakes, the economics and reliability of more complex mechanisms must be considered. -
DANotes: Motors: Load and motor characteristics
www-mdp.eng.cam.ac.uk/web/library/enginfo/textbooks_dvd_only/DAN/motors/steady/steady.htmlBefore an economic motor can be selected to drive a load, the load's steady state torque-speed characteristic should be known - this may be generalised by :. ( 1a ) T = T. 0. ... So it makes economic sense to develop torque in a mechanical transformer -
DANotes: Spur gears: Failure and reliability
www-mdp.eng.cam.ac.uk/web/library/enginfo/textbooks_dvd_only/DAN/gears/failure/failure.htmlwidth. Proportions may be expressed as :-. ( 16 ) f = β m where, usually, 9 β 15 for economic gears -. These limits should not be regarded as inviolable, but costs should be expected -
DANotes: Spur Gears: Fatigue theory applications
www-mdp.eng.cam.ac.uk/web/library/enginfo/textbooks_dvd_only/DAN/gears/application/application.htmlBut the probability of the gears surviving 75 kW with an economic life is low. ... economics. To put lives in perspective, a life of 1000 khr represents more than a century of continuous running - all day, every day! -
DANotes: V-belt drives: Kinetics and fatigue
www-mdp.eng.cam.ac.uk/web/library/enginfo/textbooks_dvd_only/DAN/V-belts/kinetics/kinetics.htmlSo the design of a power transmission train in practice needs to be carefully balanced from an economic point of view. ... the table here) and economic belt replacement frequency, or with the usual commercial expectation of 26 kh.
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