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27 Cards in this Set

  • Front
  • Back

which hardness testing method measures in units of DPH?




a. Knoop


b. Sonodur


c. Rockwell Superficial


d. Vickers



d. Vickers

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

Which hardness testing method uses a 15N scale?




a. Rockwell Superficial


b. Shore scleroscope


c. Sonodur


d. File

a. Rockwell Superficial

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

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

Which hardness testing method uses any one of nine different scales?




a. Brinell


b. Rockwell


c. Vickers


d. Rockwell Superficial

b. Rockwell

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

Which Rockwell hardness scale is most commonly used for softer materials?




a. 15N


b. B


c. C


d. BHN



b. B

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

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

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

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

in which hardness testing method is the hardness value based on the diameter of an indenture?

in which hardness testing method is the hardness value based on the diameter of an indenture?





Brinell

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?

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

what is the most widely used metal hardness testing method?

what is the most widely used metal hardness testing method?



Rockwell

in which hardness testing method is the value dependent on the height of a bounce?

in which hardness testing method is the value dependent on the height of a bounce?



Shore scleroscope

in which two hardness testing methods is the depth of penetration measured, rather than the width of penetration?

in which two hardness testing methods is the depth of penetration measured, rather than the width of penetration?



Rockwell and Rockwell Superficial

gypsum,calcite, quartz, and diamond are used in the ________ hardness testing method.

gypsum,calcite, quartz, and diamond are used in the ________ hardness testing method.



Mohs scale

what is the quickest method for determining if a part has been harden, providing the test is run by a skilled operator?

what is the quickest method for determining if a part has been harden, providing the test is run by a skilled operator?



File

in which two hardness testing methods is the outer scale penetrated by minor load before the hardness is measured?

in which two hardness testing methods is the outer scale penetrated by minor load before the hardness is measured?



Rockwell and Rockwell Superficial

which hardness testing method used a diamond-tipped magnetostrictive rod?

which hardness testing method used a diamond-tipped magnetostrictive rod?



Sonodur

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?

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

in this hardness testing method, the hardness is dependent on the impression made by a square-based diamond perpetrator.

in this hardness testing method, the hardness is dependent on the impression made by a square-based diamond perpetrator.



Vickers

In which hardness testing method is a very small impression made by a diamond perpetrator, using a load as small as 25 grams?

In which hardness testing method is a very small impression made by a diamond perpetrator, using a load as small as 25 grams?



knoop

in which hardness testing method is the hardness measurement based on the resonant frequency of the sample?

in which hardness testing method is the hardness measurement based on the resonant frequency of the sample?

Sonodur

what hardness testing method uses a 10 mm diameter ball and a 3000 kg load?

what hardness testing method uses a 10 mm diameter ball and a 3000 kg load?

Brinell

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)