Title:
TENSILE-COMPRESSION TEST METHOD
Document Type and Number:
Japanese Patent JP3819616
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a tensile-compression test method in which a tensile- compression test keeping a plastic region constant can be performed easily and with high accuracy.
SOLUTION: An EPP computing part 13 computes a value (the value of 1/2 of a plastic region Epp) which corresponds to the strain amount of a point where a straight line passing the detection value of a stress σ and a strain ε and which has a gradient equal to the gradient of an elastic line obtained in advance is crossed with the straight line of a load σ = 0. When a level comparator 14 judges that the value exceeds a desired value set in an Epp target value setting part 15 always up to the later cycle from the first cycle of a tensile compression operation, the increase and the decrease of the desired value of an elongation in a desired-value output part 1 is reversed, and the tensile compression operation is reversed.
Inventors:
Hiroshi Uno
Application Number:
JP31580398A
Publication Date:
September 13, 2006
Filing Date:
November 06, 1998
Export Citation:
Assignee:
Saginomiya Co., Ltd.
International Classes:
G01N3/34; (IPC1-7): G01N3/34
Domestic Patent References:
| JP59060242A | ||||
| JP4204038A | ||||
| JP9138190A | ||||
| JP4026419B2 | ||||
| JP57091443A |
Attorney, Agent or Firm:
Yasuo Asami
Hideo Takahashi
Yoshitaka Takeyama
Hideo Takahashi
Yoshitaka Takeyama
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