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27 Cards in this Set
- Front
- Back
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which hardness testing method measures in units of DPH? a. Knoop b. Sonodur c. Rockwell Superficial d. Vickers |
d. Vickers |
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In which hardness testing method does an experienced operator test the material by scratching the surface? a. Shore scleroscope b. Rockwell Superficial c. Mohs scale d. File |
d. File |
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Which hardness testing method uses a 15N scale? a. Rockwell Superficial b. Shore scleroscope c. Sonodur d. File |
a. Rockwell Superficial |
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which hardness testing method is portable and does not require electricity, but is quite accurate? a. Vickers b. Knoop c. Shore scleroscope d. Rockwell Superficial |
c. Shore scleroscope |
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Which hardness testing method involves the use of ten minerals to scratch material samples? a. Brinell b. Shore scleroscope c. Mohs scale d. file |
c. Mohs scale |
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Which hardness testing method uses any one of nine different scales? a. Brinell b. Rockwell c. Vickers d. Rockwell Superficial |
b. Rockwell |
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which hardness testing method measures the hardness of the sample extremely close to the surface and employs either a ball or diamond-point perpetrator? a. Vickers b. Sonodur c. Rockwell Superficial d. Knoop |
c. Rockwell Superficial |
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Which Rockwell hardness scale is most commonly used for softer materials? a. 15N b. B c. C d. BHN |
b. B |
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Which hardness testing method employs either a ball or diamond-point perpetrator and load of 15 kg, 30 kg, or 45 kg? a. Brinell b. Rockwell c. Rockwell Superficial d. Shore scleroscope |
c. Rockwell Superficial |
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USE TABLE SHOWN IN BOOK which value represents the hardest material? a. 40 Rc b. 450 BHN c. 40-45N d. 80-15N |
b. 450 BHN |
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USE TABLE SHOWN IN BOOK Which value represents the material with the least hardness? a.577 DPH b. 410 BHN c. 50 Shore d. 79 Ra |
c. 50 Shore |
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USE TABLE SHOWN IN BOOK. which value represents the material with a hardness equivalent to 71 shore? a. 63 Rc b. 350 BHN c. 87-15N d. 59 Rd |
c. 87-15N |
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in which hardness testing method is the hardness value based on the diameter of an indenture? |
Brinell |
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Which hardness testing method produces an impression that looks like a diamond, where one axis of the diamond is seven times as long as the other? |
Knoop |
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what is the most widely used metal hardness testing method? |
Rockwell |
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in which hardness testing method is the value dependent on the height of a bounce? |
Shore scleroscope |
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in which two hardness testing methods is the depth of penetration measured, rather than the width of penetration? |
Rockwell and Rockwell Superficial |
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gypsum,calcite, quartz, and diamond are used in the ________ hardness testing method. |
Mohs scale |
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what is the quickest method for determining if a part has been harden, providing the test is run by a skilled operator? |
File |
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in which two hardness testing methods is the outer scale penetrated by minor load before the hardness is measured? |
Rockwell and Rockwell Superficial |
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which hardness testing method used a diamond-tipped magnetostrictive rod? |
Sonodur |
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in most hardness testing methods, the surface should be as horizontal and flat and smooth as possible.in which method is this the most critical? |
Brinell |
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in this hardness testing method, the hardness is dependent on the impression made by a square-based diamond perpetrator. |
Vickers |
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In which hardness testing method is a very small impression made by a diamond perpetrator, using a load as small as 25 grams? |
knoop |
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in which hardness testing method is the hardness measurement based on the resonant frequency of the sample? |
Sonodur |
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what hardness testing method uses a 10 mm diameter ball and a 3000 kg load? |
Brinell |
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55-15N what is 55 what is 15N |
the units (measures on a rockwell superficial test machine) 15 kg load (the load used to test) |
