نام فایل : سختي برنيل فرمت : .doc تعداد صفحه/اسلاید : 5 حجم : 3 مگابایت brinell hardnessDr. J. A. Brinell invented the Brinell test in Sweden in 1900. The oldest of the hardness test methods in common use today, the Brinell test is frequently used to determine the hardness of forgings and castings that have a grain structure too course for Rockwell or Vickers testing. Therefore, Brinell tests are frequently done on large parts. By varying the ...