The Mechanical Engineer's Pocket-book: A Reference Book of Rules, Tables, Data, and Formulæ, for the Use of Engineers, Mechanics, and StudentsJ. Wiley & sons, 1902 - 1113 σελίδες |
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Σελίδα 236
... load , no matter how small , and that with others a set which might be called permanent vanishes with lapse of time , and as it is impossible to get the point of first ... load after each increase of load , which 236 STRENGTH OF MATERIALS .
... load , no matter how small , and that with others a set which might be called permanent vanishes with lapse of time , and as it is impossible to get the point of first ... load after each increase of load , which 236 STRENGTH OF MATERIALS .
Σελίδα 237
... load after each increase of load , which is frequently inconvenient . The elastic limit , defined , however , as the point at which the extensions be- gin to increase at a higher ratio than the applied stresses , usually corresponds ...
... load after each increase of load , which is frequently inconvenient . The elastic limit , defined , however , as the point at which the extensions be- gin to increase at a higher ratio than the applied stresses , usually corresponds ...
Σελίδα 238
... loads . The coefficient of elasticity therefore is not con- stant during any portion of a test , but grows smaller as the load increases . The same is true in the case of timber . In wrought iron and steel , however , there is a well ...
... loads . The coefficient of elasticity therefore is not con- stant during any portion of a test , but grows smaller as the load increases . The same is true in the case of timber . In wrought iron and steel , however , there is a well ...
Σελίδα 239
... load of a bar . Thus , in some experi ments by Professor Styffe , the elastic limit of a puddled - steel bar was raised 16,000 lbs . by subjecting the bar to a load exceeding its primitive elastic limit . A bar has two limits of ...
... load of a bar . Thus , in some experi ments by Professor Styffe , the elastic limit of a puddled - steel bar was raised 16,000 lbs . by subjecting the bar to a load exceeding its primitive elastic limit . A bar has two limits of ...
Σελίδα 242
... load and the amount of extension at the elastic limit . The maximum load applied before rupture . The elongation of the piece , measured between gauge - marks placed a stated distance apart before the test ; and the reduction of area at ...
... load and the amount of extension at the elastic limit . The maximum load applied before rupture . The elongation of the piece , measured between gauge - marks placed a stated distance apart before the test ; and the reduction of area at ...
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Συχνά εμφανιζόμενοι όροι και φράσεις
alloy aluminum angle base beam bolt brass bricks carbon cast iron cent chord circle Circular Mils Circum circumference coefficient column compression compression member copper cubic cubic foot curve cylinder decimal Diam diameter Diff difference differential distance divide draw ductility elastic limit elongation Engineering equal equation factor of safety feet fibre Flange force formula frustum Gauge given half heat increase inertia length load logarithm manganese material maximum metal modulus moment of inertia multiply Neutral Axis perpendicular pipe plane plate pounds per square pressure proportional radius of gyration Recipro resistance rivets shearing side silicon sine solid specific gravity specimen square foot square inch standard steel strain strands stress subtract surface tangent temperature tensile strength tension tests thickness thread tons transverse triangle tubes velocity wrought iron zinc
Δημοφιλή αποσπάσματα
Σελίδα 688 - Notice the general condition of the boiler and its equipment and record such facts in relation thereto as bear upon the objects in view. If the object of the trial is to ascertain the maximum economy or capacity of the boiler as a steam generator, the boiler and all its appurtenances should be put in first-class condition.
Σελίδα 482 - CL are line pressure and sonic speed of the gas at £ -» — *, and y is the ratio of specific heat at constant pressure to specific heat at constant volume for the gas.
Σελίδα 396 - For the purposes of this specification, the yield point shall be determined by the careful observation of the drop of the beam or halt in the gauge of the testing machine.
Σελίδα xxxii - Multiply the numerators together for a new numerator, and the denominators together for a new denominator.
Σελίδα 414 - If any number of forces acting at a point can be represented in magnitude and direction by the sides of a POLYGON taken in order, they are in equilibrium.
Σελίδα 691 - The coal should be weighed and delivered to the firemen in equal portions, each sufficient for about one hour's run, and a fresh portion should not be delivered until the previous one has all been fired. The time required to consume each portion should be noted, the time being recorded at the instant of firing the first of each new portion.
Σελίδα 692 - In tests for purposes of scientific research, in which the determination of all the variables entering into the test is desired, certain observations should be made which are in general unnecessary for ordinary tests.
Σελίδα 66 - In any plane triangle, the sum of any two sides is to their difference as the tangent of half the sum of the opposite angles is to the tangent of half their difference.
Σελίδα 691 - ... moisture in the steam should be determined by the use of either a throttling or a separating steam calorimeter. The sampling nozzle should be placed in the vertical steam pipe rising from the boiler. It should be made of...
Σελίδα 6 - ... and to the remainder bring down the next period for a dividend. 3. Place the double of the root already found, on the left hand of the dividend for a divisor. 4. Seek how often the divisor is contained...