What Is Breaking Strength? What is a Deflectometer? Discussion Comments Byumbra21— On Sep 29, 2011 @KoiwiGal - I don't think you give people enough credit. The kind of mathematics they were doing thousands of years ago was certainly advanced enough to calculate torsional stiffness. ...
Figure6: Ultimate Strength and Yield strength can be determined from static stress-strain tests。 For example, the Ultimate Strength stress is the value that causes a failure for one cycle. The Yield Strength stress level divides the plastic and elastic region. 例如,极限强度应力是单个周期就引起失...
“Shear Strain” combines the measurements of object deformation along both its horizontal and linear axes. It is defined mathematically as shear stress divided by the modulus of shear stress. 4. Torsional strain “Torsional strain” refers to the circular force along both the horizontal and vertica...
Take note of the distinction between strength and toughness: while toughness measures the force needed for the complete failure of the material, strength is only a measure of the force it takes to reach plastic deformation. In some cases, such as very brittle material such as ceramics, strength...
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Oil casing is the lifeline to keep oil well running. Due to the different geological conditions, the downhole stress state is complex, and the combined effects of tension, compression, bending and torsional stress act on the pipe body, which puts forward higher requirements on the quality of ...
S-135:Minimum Yield Strength (psi) 135000 Among them, grades X, G and S belong to high strength drill pipe grades. The higher the steel grades, the higher the strength of the drill pipe (yield strength, tensile strength, torsional strength, anti-extrusion strength, etc.).Other...
Twine is a strong thread, light string or cord composed of two or more thinner strands twisted, and then twisted together (plied). The strands are plied in the opposite direction to that of their twist, which adds torsional strength to the cord and keeps it from unravelling. Rope A flexibl...
Twine is a strong thread, light string or cord composed of two or more thinner strands twisted, and then twisted together (plied). The strands are plied in the opposite direction to that of their twist, which adds torsional strength to the cord and keeps it from unravelling. Cord A slender...
When it comes to drilling, the operator must also consider deflection for torque and feeding. Torque is the strength of torsion and is also called the torsional moment. On the other hand, feed is the movement in the direction of moving the drill forward. ...