Stress-strain curve

Solo disponible en BuenasTareas
  • Páginas : 9 (2017 palabras )
  • Descarga(s) : 13
  • Publicado : 29 de julio de 2010
Leer documento completo
Vista previa del texto
Engineering Stress-strain Curve

Página 1 de

Knowledge Article from www.Key-to-Steel.com
News Who is it for Guided Tour FAQ Contact Us Abstract: The engineering tension test is widely used to provide basic design information on the strength of materials and as an acceptance test for the specification of materials. In the tension test a specimen is subjected to a continually increasinguniaxial tensile force while simultaneous observations are made of the elongation of the specimen. The parameters, which are used to describe the stress -strain curve of a metal, are the tensile strength, yield strength or yield point, percent elongation, and reduction of area . The first two are strength parameters; the last two indicate ductility.

alwa

Engineering Stress-strain Curve
PrintableVersion

FREE and rece technic

Login Download CRT

Subscrib The Wor Compreh Databas

You want to master the world of nonferrous metals? Click here to discover Key to Metals

The engineering tension test is widely used to provide basic design information on images/the strength of materials and as an acceptance test for the specification of materials. In the tension test a specimen issubjected to a continually increasing uniaxial tensile force while simultaneous observations are made of the elongation of the specimen. An engineering stress-strain curve is constructed from the load elongation measurements (Fig. 1).

Find out leaders li Apple, Be ChevronT Dana, De General E Dynamics Metals, H Livermor Lloyds, M Shell, Sie SSAB, St Sulzer, T Toyota an the Datab months o

Andchec quality of your nee ISO 9001 first in th

Just click steel.com

Key to S Than 140

Key to S

Key to S rock

FullDatabase

Figure 1. The engineering stress-strain curve It is obtained by dividing the load by the original area of the cross section of the specimen. (1)

• • • • • •

chem stand applic mech heat prope tempe • fatigu • tables world

The strain used for theengineering stress-strain curve is the average linear strain, which is obtained by dividing the elongation of the gage length of the specimen, d, by its original length. (2)

in more t propertie alloys, or countries these dat impossibl

Moreover you comp Base collected alloys, st

http://www.key-to-steel.com/Articles/Art43.htm

31/10/2005

Engineering Stress-strain Curve

Página 2 de

Sinceboth the stress and the strain are obtained by dividing the load and elongation by constant factors, the load-elongation curve will have the same shape as the engineering stress-strain curve. The two curves are frequently used interchangeably. The shape and magnitude of the stress-strain curve of a metal will depend on its composition, heat treatment, prior history of plastic deformation, and thestrain rate, temperature, and state of stress imposed during the testing. The parameters, which are used to describe the stress-strain curve of a metal, are the tensile strength, yield strength or yield point, percent elongation, and reduction of area. The first two are strength parameters; the last two indicate ductility. The general shape of the engineering stress-strain curve (Fig. 1) requiresfurther explanation. In the elastic region stress is linearly proportional to strain. When the load exceeds a value corresponding to the yield strength, the specimen undergoes gross plastic deformation. It is permanently deformed if the load is released to zero. The stress to produce continued plastic deformation increases with increasing plastic strain, i.e., the metal strain-hardens. The volumeof the specimen remains constant during plastic deformation, A ·L = A 0·L0 and as the specimen elongates, it decreases uniformly along the gage length in crosssectional area.

applicatio Knowled unique Wide Web

High qua Task Forc by Germa CERT ...

Initially the strain hardening more than compensates for this decrease in area and the engineering stress (proportional to load P) continues...
tracking img