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24 Cards in this Set
- Front
- Back
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_______ Is the first stress in a material, usually less than the maximum attainable stress, at which an increase in strain occurs without an increase in stress |
Yield point |
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_______ Is the stress at which a material exhibits a specified deviation from proportionality with stress. |
Yield strength |
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_______ of steel bars shall be made only as required or permitted on design drawings, or in specifications, or as authorized by the Engineer. |
Splices |
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_______ Is the ratio of maximum load to nominal cross- sectional area, also called ultimate strength. |
Tensile strength |
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_______ Is one method for evaluating ductility, but it cannot be considered as a quantitative means of predicting service performance in all bending operations. |
Bend Test |
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_______ The manufacturer's identifying mark, bar size and grade shall be clearly embossed in each bar. |
Marking |
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_______ Such specimens are used for testing metallic materials in the form of plate, structural and bar-size shapes, and flat material having a nominal thickness of 3⁄16 in. (5 mm) or over. |
Plate-Type Specimen |
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________ This specimen is used for testing metallic materials in the form of sheet, plate, flat wire, strip, band, and hoop ranging in nominal thickness from 0.005 to 1 in. (0.13 to 25 mm). |
Sheet-Type Specimen |
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________ Is a permanent extension in the gauge length of test specimen, measured after rupture, expressed as percentage of the original gauge length |
Elongation |
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_______ Is a mechanical shaping process applied to metal products involving the reduction of cross-sectional area through the use of rotating rolls |
Hot rolling |
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Six grades of steel bars |
230 275 415 230W 275W 415W |
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Give atleast four (4) Steel and other metals testing |
TENSION TEST BEND TEST HARDNESS TEST CHARPY IMPACT TESTING |
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When a minimum average test result is specified: when is the time that the test result is accepted. |
(1) The test result equals or exceeds the specified minimum average (given in the specification), (2) The individual test value for not more than one specimen measures less than the specified minimum average, and (3) The individual test value for any specimen measures not less than two-thirds of the specified minimum average. |
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The steel bars shall be free from injurious defects |
Surface finish |
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It is the function of the gripping or holding device of the testing machine to transmit the load from the heads of the machine to the specimen under test |
Loading |
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Fit the ends of the fractured specimen together and measure the mean diameter or the width and thickness at the smallest cross section to the same accuracy as the original dimensions |
Reduction of Area |
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In this test a hardness value is obtained by determining the depth of penetration of a diamond point or a tungsten carbide ball into the specimen under certain arbitrarily fixed conditions. |
Rockwell Test |
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Machines should be checked to make certain they are in good order by means of standardized Rockwell test blocks. |
Test Blocks |
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A _________ is one in which a notched specimen is broken by a single blow of a freely swinging pendulum. |
Charpy impact machine |
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Elements other than carbon, phosphorus, or sulfur, that are added to effect changes in weld ability characteristics or mechanical/physical properties. |
Alloying elements |
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A semi-finished steel product, hot-rolled or forged continuously cast. |
Billet |
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A semi-finished steel product, hot-rolled or forged continuously cast. |
Billet |
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A steel bar rolled to finish above the recrystallization temperature and normally aircooled. |
As-rolled bar |
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A mass of metal cast into some convenient shape for storage or transportation to be re-melted later for casting or finished by rolling, forging, etc. |
Ingot |
