... uses formed nylon wipers. The FineLine metric series and precision plus metric series use formed Delrin wipers. The NEFF metric series uses formed rubber wipers. A brush style wiper is good for ... 3000 for inch series ball nuts and dN = 140,000 for metric series ball nuts. (d = nominal diameter of the screw and N = rpm). Contact Thomson if your application exceeds this rule of thumb or for ... Are torque limiters usually recommended for the prime mover? A: No, torque limiters are not typically required for most applications. Q: is there any documentation on how to reassemble ball...
Ngày tải lên: 13/12/2013, 01:16
... 000*Eϩ03 kilogram-force (kgf) newton (N) 9.806 650*Eϩ00 kilogram-force-metre newton-metre (N и m) 9.806 650*Eϩ00 kilogram-force-second 2 /metre (mass) kilogram (kg) 9.806 650*Eϩ00 kilogram-force/centimetre 2 pascal ... candela/metre 2 (cd/m 2 ) 3.426 259 Eϩ00 foot-pound-force joule (J) 1.355 818 Eϩ00 foot-pound-force/hour watt (W) 3.766 161 EϪ04 foot-pound-force/minute watt (W) 2.259 697 EϪ02 foot-pound-force/second watt (W) 1.355 ... will accelerate at 1 ft/s 2 when acted upon by a one pound force. It is therefore equal to 32.1740 pound-mass. The kilogram force is the force required to support the standard kilo- gram against...
Ngày tải lên: 09/03/2014, 00:20
RULES OF THUMB FOR MECHANICAL ENGINEERS docx
... Conduction 21 V 8 Rules of Thumb for Mechanical Engineers Weber Number Weber number is the ratio of inertial forces to surface ten- sion forces. v21p W=- 0 This parameter is ... the ratio of forces rather than the forces themselves. The model and the prototype are dynamically similar if (a) they are geometrically similar and (b) the ratio of pertinent forces are ... ratio of inertial force to weight: This number is useful in the design of spillways, weirs, chan- nel flows, and ship design. 24 Rules of Thumb for Mechanical Engineers Correlations...
Ngày tải lên: 27/06/2014, 06:20
Introduction to Statistics for Biomedical Engineers doc
... statistics course for biomedical engineers and have taught me how to be more effective in communicating the subject matter and making statistics come alive for them. I also thank J. Claypool for his ... transformations may often be used to make the data normal, and the statistics covered in this text may then be used to perform statistical analysis on the trans - formed data. These transformations ... hypotheses for which we collected the data in the first place. Figure 1.2 outlines the steps for performing statistical analysis of data. In the following chapters, we will describe methods for graphically...
Ngày tải lên: 27/06/2014, 10:20
Batteries in a Portable World: A Handbook on Rechargeable Batteries for Non-Engineers docx
... economically priced and perform well when used for the application intended. The personal charger offers moderate charge times. In comparison, the industrial charger is designed for employee use and ... a topping-charge before use rather than leaving the pack in the charger for days. Even at a seemingly correct trickle charge, nickel- based batteries produce a crystalline formation (also referred ... lowest energy density. For the purpose of analysis, we use the term ‘sealed lead acid’ to describe the lead acid batteries for portable use and ‘valve regulated lead acid’ for stationary applications....
Ngày tải lên: 27/06/2014, 14:20
Ada for Software Engineers doc
... detected. • Ada 95 extended support for hardware interfacing, as well as for programming in a mixed- language environment. Data types are defined for machine words, as well as for objects shared with libraries ... the document defining the language standard. The ARM has a reputation for being ponderous reading meant for “language lawyers.” Never- theless, I believe that—with a bit of guidance—software engineers ... and the direction of the information flow between the formal and actual parameters, rather than the mechanism used for passing parameters. There are three modes: in The formal parameter is considered...
Ngày tải lên: 29/06/2014, 08:20
Tài liệu Statistics for Environmental Engineers P2 doc
... capable of extracting useful information from tabulated figures. Putting these same numbers in appropriate graphical form completely changes the situation. The informed human mind can then operate ... appropriate action to improve performance. The second purpose is to have an accurate record of what has happened in the past, especially if the salient information is in such a form that it is easily communicated ... they are kept up-to-date and used for the first purpose, they can also be used for the second. On the other hand, if they are not kept up-to-date, they may be useful for the second purpose only. In...
Ngày tải lên: 20/01/2014, 01:20
Statistical Thermodynamics and Stochastic Kinetics: An Introduction for Engineers doc
... 312 1 Introduction 1.1 Prologue Engineers learn early on in their careers how to harness energy from nature, how to generate useful forms of energy, and how to transform between different energy forms. Engineers usually ... and (2) the entropy difference for any change is non-negative. Typically, the first law of thermodynamics for the energy of a system is cast into a balance equation of the form: change of energy in ... determine their probability. I assume no prior exposure to statistics, which is regretfully true for most engineers. I then discuss, in Chapter 3, the classical mechanical concepts required to define...
Ngày tải lên: 07/03/2014, 20:20
Electromagnetism for Electronic Engineers – Examples doc
... future. Every single day. For more information go to: www.eon-career.com Your energy shapes the future. Download free ebooks at bookboon.com Electromagnetism for Electronic Engineers – Examples ... Executive Education For more information, visit www.msm.nl or contact us at +31 43 38 70 808 or via admissions@msm.nl the globally networked management school For more information, visit www.msm.nl ... these estimates for C 1 and C 2 gives for the total capacitance 0.7 pF < C< 2.5 pF. Although this estimate is rather crude it is probably accurate enough for the purpose for which it is...
Ngày tải lên: 07/03/2014, 21:20
Applied Cell and Molecular Biology for Engineers docx
... necessary for engineers in a wide range of disciplines and for other nonbiologists by primary training to have a basic background in cell biology. Scientists increasingly work in teams comprised of engineers, ... anyone else for any inaccuracy, error or omission, regardless of cause, in the work or for any damages resulting therefrom. McGraw-Hill has no responsibility for the content of any infor- mation ... system. Applied Cell and Molecular Biology for Engineers Chapter 1 Biomolecules Walter X. Balcavage, Ph.D. OBJECTIVES ■ To understand the role of physical forces for chemical reactions ■ To introduce...
Ngày tải lên: 27/06/2014, 10:20
Statistics for Environmental Engineers - Part 1 docx
... not extend to copying for general distribution, for promotion, for creating new works, or for resale. Specific permission must be obtained in writing from CRC Press LLC for such copying. Direct ... Average Many standards for environmental quality have been written for an average of 30 consecutive days. The language is something like the following: “Average daily values for 30 consecutive days ... simple updating formula: By smoothing random fluctuations, the moving average sharpens the focus on recent performance levels. Figure 4.2 shows the MA7 and MA30 moving averages for some PCB data....
Ngày tải lên: 11/08/2014, 09:21
Statistics for Environmental Engineers - Part 3 doc
... subsampling for the composite for analysis. The compositing does some beneficial averaging. Hahn and Meeker (1991) give examples and many useful tables for deriving sample size requirements for confidence ... as soil moisture, soil temperature, wind velocity, and land use (tilled for crops vs. pasture, for example). 6. Do this for an experiment that you have done, or one that you would like to do. 22.4 ... completed before any worthwhile results are obtained. Start with a simple design that can be augmented as additional information becomes available. FIGURE 22.1 The experimental designs for fitting...
Ngày tải lên: 11/08/2014, 09:21
Standard Handbook for Mechanical Engineers 2010 Part 8 docx
... material and thickness. The ASME Code for Unfired Pres- sure Vessels, section VIII, gives sufficient detail for typical joint design and tabulates values for y and m for various gasketing materials. Copyright ... welded or seamless steel pipe used for conveying water for municipal and industrial applications. Pipelines for such purposes involve flow mains, transmission mains, force mains, water mains, or distribution ... suitably prepared for me- chanical couplers, with plain ends beveled for welding, with ends fitted with butt straps for field welding, or with bell-and-spigot joints with rubber gaskets for field joining....
Ngày tải lên: 11/08/2014, 20:21