TAILIEUCHUNG - Standard Handbook for Mechanical Engineers

The RP process begins when the object is drawn on the screen of a CAD workstation or personal computer to provide the digital data base. Then, in a post-design data processing step, computer software slices the object mathematically into a finite number of horizontal layers in generating an STL (Solid Transfer Language) file. The thickness of the “slices” can range from to in. ( to 13 mm) depending on the RP process selected. The STL file is then converted to a file that is compati- ble with the specific 3D “printer” or processor that will construct the model. The digitized data then guides a laser, X-Y table,. | Marks Standard Handbook for Mechanical Engineers Section 1 Mathematical Tables and Measuring Units BY GEORGE F. BAUMEISTER President EMC Process Co. Newport DE JOHN T. BAUMEISTER Manager Product Compliance Test Center Unisys Corp. MATHEMATICAL TABLES by George F. Baumeister Segments of Regular Binomial Compound Interest and Statistical Decimal MEASURING UNITS by John T. Baumeister . Customary System USCS .1-16 Metric The International System of Units SI .1-17 Systems of Units .1-24 Temperature .1-25 Terrestrial Gravity .1-25 Mohs Scale of Hardness .1-25 Time .1-25 Density and Relative Conversion and Equivalency Tables .1-27 MATHEMATICAL TABLES by George F. Baumeister References for mathematical TABLES Dwight Mathematical Tables of Elementary and Some Higher Mathematical Functions McGraw-Hill. Dwight Tables of Integrals and Other Mathematical Data Macmillan. Jahnke and Emde Tables of Functions B. G. Teubner Leipzig or Dover. Pierce-Foster A Short Table of Integrals Ginn. Mathematical Tables from Handbook of Chemistry and Physics Chemical Rubber Co. Handbook of Mathematical Functions NBS. 1-1 1-2 MATHEMATICAL TABLES Table Segments of Circles Given h c Given h height c chord. To find the diameter of the circle the length of arc or the area of the segment form the ratio h c and find from the table the value of diam c arc c then by a simple multiplication diam c X diam c arc c X arc c area h X c X area h X c The table gives also the angle subtended at the center and the ratio of h to D. h c Diam c .00 1 2 3 4 .05 6 7 8 9 .10 1 2 3 4 .15 6 7 8 9 .20 1 2 3 4 .25 6 7 8 9 .30 1 2 3 4 .35 6 7 8 9 .40 1

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