[請益] 硬度試驗的問題
(a)當使用一圓椎(頂角為90度)為壓痕器
在估測硬度時，
在什麼樣的情況下必須將圓錐尖端的半徑給考慮進去
是否是會有摩擦力產生的時候啊！但不知該怎麼描述！
(b)
Aluminum has a true stress-strain curve given by σ=180×(E^0.2)
If this cylindrical piece of aluminum is loaded in a tensile test to a true
strain of 0.1, unloaded and then reloaded, what would be its true yield
strength upon reloading?
是不是應該去算原來的降幅強度跟彈性模數？
但我不知道怎麼算，念起來著實有點痛苦。
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 118.167.193.122
→
10/03 01:30, , 1F
10/03 01:30, 1F
→
10/03 01:34, , 2F
10/03 01:34, 2F
→
10/03 01:39, , 3F
10/03 01:39, 3F
→
10/03 01:43, , 4F
10/03 01:43, 4F
→
10/03 01:57, , 5F
10/03 01:57, 5F
→
10/03 02:00, , 6F
10/03 02:00, 6F
→
10/03 02:34, , 7F
10/03 02:34, 7F
Mechanical 近期熱門文章
PTT職涯區 即時熱門文章
13
18