Tooling U Hardness Testing 221 Questions with Correct Answers (1)

Tooling U Hardness Testing 221 Questions with Correct Answers (1) Which of the following is the proper notation for a material with Rockwell B-scale hardness of 99? - Answer-HRB99 Which of the following statements about Shore hardness testing is true? Shore hardness testing uses: - Answer-A durometer with an indenter and dial indicator to measure a material's hardness. What is the correct notation for a Knoop hardness of 600 under a 0.75 kg testing force? - Answer-600HK0.75 Which of the following terms describes a material's ability to resist penetration? - Answer-Hardness Which of the following statements about ultrasonic microhardness testing is true? Ultrasonic microhardness testing measures: - Answer-The change in frequency of a vibrating Vickers indenter. Which of the following sentences is true about Brinell hardness testing? - Answer- Standard loads for Brinell tests include 500, 1500, and 3000 kilograms. Which of the following statements is true about microhardness testing? - Answer-Loads used in microhardness tests are usually less than 1 kilogram. Which hardness test uses a minor load of 3 kg and a major load of either 15, 30, or 45 kilograms? - Answer-Superficial Rockwell Which test uses a pyramid indenter with a square base and loads between 1 and 120 kilograms? - Answer-Vickers Which hardness test measures the rebound of a diamond-tipped hammer that is dropped from a fixed height? - Answer-Scleroscope What is the proper notation for a material with a Brinell hardness of 523? - Answer- HB523 Which hardness testing method determines a hardness value after delivering a minor and major static load? - Answer-Rockwell Which of the following sentences about hardness testing methods is true? - Answer- Rebound methods measure how high or fast a hammer rebounds after being dropped on the test material. Which portable hardness testing method measures the rebound of a ball hammer that is bounced off of the material with a spring mechanism? - Answer-Leeb Which of the following statements about hardness data conversion is true? - Answer- Reference charts offer approximate comparisons of different hardness scales. Which of the following sentences about the Rockwell hardness test is true? - Answer- The first static load usually causes elastic deformation, while the second causes plastic deformation. Which of the following statements about hardness testing accuracy is true? - Answer- Devices must be cleaned and calibrated before testing begins. Which of the following statements describes Knoop hardness testing? Knoop hardness testing is: - Answer-A test that uses a pyramid indenter with a diagonal that is 7 times the length of the shorter diagonal.