ブログの絞り込み

Posted By David Fry

 Sep 25, 2014

blog

Stress Control and Yielding Material

Since the first materials testing machines were used for tensile testing of metals, one option of performing the test has been to control the rate at which you apply load to the specimen, or apply stress.

Posted By David Fry

 Jun 10, 2014

blog

Backward Strain at Yield — Discontinuous Yielding/YPE Material

During a recent customer visit, a concern was raised about a turnaround point on the graph that they had not previously seen. Following a bit of investigation, the customer was producing galvanized steel of various grades, some of which was aged. The graph below shows a magnified view of the fairly aggressive upper yield point (UYS or ReH), which results in an almost immediate drop in stress.

Posted By David Fry

 Jan 31, 2014

blog

What is The Difference Between Proportional and Non-proportional Clamping Force?

While there are many varieties of gripping technologies (wedge, screw, hydraulic, pneumatic, etc.), they all can be classified as proportional or non-proportional according to the way in which the clamping force is exerted on the specimen.