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Τι (ποιος) είναι ultimate tensile stress - ορισμός

CAPACITY OF A MATERIAL OR STRUCTURE TO WITHSTAND LOADS TENDING TO ELONGATE; RESISTS TENSION (BEING PULLED APART); MEASURED BY THE MAXIMUM STRESS THAT A MATERIAL CAN WITHSTAND WHILE BEING STRETCHED OR PULLED BEFORE BREAKING

Ultimate strength; Ultimate tensile stress; Tensil strength; Hot strength; Tensile strength; Tensile load; Tensile strengths; Tensile loading

$Two vises apply tension to a specimen by pulling at it, stretching the specimen until it fractures. The maximum stress it withstands before fracturing is its ultimate tensile strength.$

Ultimate tensile strength

Ultimate tensile strength (UTS), often shortened to tensile strength (TS), ultimate strength, or F_\text{tu} within equations, is the maximum stress that a material can withstand while being stretched or pulled before breaking. In brittle materials the ultimate tensile strength is close to the yield point, whereas in ductile materials the ultimate tensile strength can be higher.

https://en.wikipedia.org/wiki/Ultimate_tensile_strength

tensile strength

¦ noun the resistance of a material to breaking under tension. Compare with compressive strength.

Compressive

$Isotropic tensile stress. Top left: Each face of a cube of homogeneous material is pulled by a force with magnitude ''F'', applied evenly over the entire face whose area is ''A''. The force across any section ''S'' of the cube must balance the forces applied below the section. In the three sections shown, the forces are ''F'' (top right), ''F''<math>\sqrt{2}</math> (bottom left), and ''F''<math>\sqrt{3}/2</math> (bottom right); and the area of ''S'' is ''A'', ''A''<math>\sqrt{2}</math> and ''A''<math>\sqrt{3}/2</math>, respectively. So the stress across ''S'' is ''F''/''A'' in all three cases.$
$The ratio <math>\sigma = F/A</math> may be only an average stress. The stress may be unevenly distributed over the cross section (''m''–''m''), especially near the attachment points (''n''–''n'').$

PHYSICAL QUANTITY THAT EXPRESSES INTERNAL FORCES IN A CONTINUOUS MATERIAL

Tensile stress; Physical stress; Normal stress; Tensible strength; Mechanical stress; Piola-Kirchhoff stress tensor; Piola–Kirchoff stress tensor; Stress, mechanical; Deviatorics tress; Compressive; Piola-Kirchhoff stress; Deviatoric; Extensional stress; Longitudinal stress; Stress (physics); Internal stresses; Internal stress; Octahedral shear stress; Piola–Kirchhoff stress tensor; N/m2; Stress path; Cauchy's tetrahedron; Cauchy tetrahedron; Piola-Kirchoff stress tensor

·adj Compressing, or having power or tendency to compress; as, a compressive force.

Βικιπαίδεια

Ultimate tensile strength

Ultimate tensile strength (also called UTS, tensile strength, TS, ultimate strength or $F_{\text{tu}}$ in notation) is the maximum stress that a material can withstand while being stretched or pulled before breaking. In brittle materials the ultimate tensile strength is close to the yield point, whereas in ductile materials the ultimate tensile strength can be higher.

The ultimate tensile strength is usually found by performing a tensile test and recording the engineering stress versus strain. The highest point of the stress–strain curve is the ultimate tensile strength and has units of stress. The equivalent point for the case of compression, instead of tension, is called the compressive strength.

Tensile strengths are rarely of any consequence in the design of ductile members, but they are important with brittle members. They are tabulated for common materials such as alloys, composite materials, ceramics, plastics, and wood.

https://en.wikipedia.org/wiki/Ultimate tensile strength